OTTR 10-K Annual Report Dec. 31, 2012

OTTER TAIL CORP

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10-K 1 t75516_10k.htm FORM 10-K t75516_10k.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

x	Annual Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2012

o	Transition Report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the transition period from _______to_______

Commission File Number 0-53713

OTTER TAIL CORPORATION

(Exact name of registrant as specified in its charter)

MINNESOTA	27-0383995
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

215 SOUTH CASCADE STREET, BOX 496, FERGUS FALLS, MINNESOTA	56538-0496
(Address of principal executive offices)	(Zip Code)

Registrant’s telephone number, including area code: 866-410-8780

Securities registered pursuant to Section 12(b) of the Act:

	Title of each class	Name of each exchange on which registered
	COMMON SHARES, par value $5.00 per share	The NASDAQ Stock Market LLC

Securities registered pursuant to Section 12(g) of the Act:

CUMULATIVE PREFERRED SHARES, without par value

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. (Yes x No o )

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or

Section 15(d) of the Act. (Yes o No x )

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. (Yes x No o )

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). (Yes x No o )

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein and will not be contained, to the best of the registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. x

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

	Large Accelerated Filer x	Accelerated Filer o
	Non-Accelerated Filer o	Smaller Reporting Company o
	(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). (Yes o No x )

The aggregate market value of common stock held by non-affiliates, computed by reference to the last sales price on June 29, 2012 was $777,976,655.

Indicate the number of shares outstanding of each of the registrant’s classes of common stock, as of the latest practicable date: 36,169,488 Common Shares ($5 par value) as of February 15, 2013.

Documents Incorporated by Reference:

Proxy Statement for the 2013 Annual Meeting-Portions incorporated by reference into Part III

OTTER TAIL CORPORATION

FORM 10-K TABLE OF CONTENTS

	Description	Page Numbers
	Definitions	2
PART I
ITEM 1.	Business	4
ITEM 1A.	Risk Factors	29
ITEM 1B.	Unresolved Staff Comments	35
ITEM 2.	Properties	35
ITEM 3.	Legal Proceedings	36
ITEM 3A.	Executive Officers of the Registrant (as of February 27, 2013)	36
ITEM 4.	Mine Safety Disclosures	36

PART II
ITEM 5.	Market for Registrant’s Common Equity, Related Stockholder Matters And Issuer Purchases of Equity Securities	37
ITEM 6.	Selected Financial Data	38
ITEM 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	38
ITEM 7A.	Quantitative and Qualitative Disclosures About Market Risk	61
ITEM 8.	Financial Statements and Supplementary Data:
	Report of Independent Registered Public Accounting Firm	63
	Consolidated Balance Sheets	64
	Consolidated Statements of Income	66
	Consolidated Statements of Comprehensive Income	67
	Consolidated Statements of Common Shareholders’ Equity	68
	Consolidated Statements of Cash Flows	69
	Consolidated Statements of Capitalization	70
	Notes to Consolidated Financial Statements	71
	Supplementary Financial Information - Quarterly Information	120
ITEM 9.	Changes in and Disagreements with Accountants on Accounting and Financial Disclosure	121
ITEM 9A.	Controls and Procedures	121
ITEM 9B.	Other Information	121

PART III
ITEM 10.	Directors, Executive Officers and Corporate Governance	122
ITEM 11.	Executive Compensation	122
ITEM 12.	Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters	123
ITEM 13.	Certain Relationships and Related Transactions and Director Independence	123
ITEM 14.	Principal Accountant Fees and Services	123

PART IV
ITEM 15.	Exhibits and Financial Statement Schedules:	124

Signatures		132

Definitions

The following abbreviations or acronyms are used in the text. References in this report to “we”, “us” and “our” are to Otter Tail Corporation, collectively.

ADP	Advance Determination of Prudence
Aevenia	Aevenia, Inc.
AFUDC	Allowance for Funds Used During Construction
AQCS	Air Quality Control System
ARO	Accumulated Asset Retirement Obligation
ASC	Accounting Standards Codification
ASM	Ancillary Services Market
Aviva	Aviva Sports, Inc.
BACT	Best-Available Control Technology
BART	Best-Available Retrofit Technology
Bemidji Project	Bemidji-Grand Rapids 230 kV Project
Brookings Project	Brookings-Southeast Twin Cities 345 kV Project
BTD	BTD Manufacturing, Inc.
CAA	Clean Air Act
CAIR	Clean Air Interstate Rule
CapX2020	Capacity Expansion 2020
Cascade	Cascade Investment LLC
CCMC	Coyote Creek Mining Company, L.L.C.
CCRA	Conservation Cost Recovery Adjustment
CO 2	Carbon Dioxide
CON	Certificate of Need
CSAPR	Cross-State Air Pollution Rule
CWIP	Construction Work in Progress
DENR	Department of Environment and Natural Resources
DMI	DMI Industries, Inc.
DMS	DMS Health Technologies, Inc.
ECRR	Environmental Cost Recovery Rider
EEI	Edison Electric Institute Index
EPA	Environmental Protection Agency
ERCOT	Electric Reliability Council of Texas
ESSRP	Executive Survivor and Supplemental Retirement Plan
Fargo Project	Fargo-Monticello 345 kV Project
FASB	Financial Accounting Standards Board
FERC	Federal Energy Regulatory Commission
Foley	Foley Company
GAAP	Generally Accepted Accounting Principles
GHG	Greenhouse Gas
IPH	Idaho Pacific Holdings, Inc.
IRP	Integrated Resource Plan
JPMS	J.P. Morgan Securities
kV	kiloVolt
kW	kiloWatt
kwh	kilowatt-hour
LSA	Lignite Sales Agreement
MAPP	Mid-Continent Area Power Pool
MATS	Mercury and Air Toxics Standards
MDU	MDU Resources Group, Inc.
MEI	Moorhead Electric, Inc.
MISO	Midwest Independent Transmission System Operator
MNCIP	Minnesota Conservation Improvement Program
MNDOC	Minnesota Department of Commerce
MNOAG	Minnesota Office of Attorney General
MNRRA	Minnesota Renewable Resource Adjustment
MPCA	Minnesota Pollution Control Agency

MPUC	Minnesota Public Utilities Commission
MRO	Midwest Reliability Organization
MVP	Multi-Value Project
MW	Megawatt
NAEMA	North American Energy Marketers Association
NDDOH	North Dakota Department of Health
NDPSC	North Dakota Public Service Commission
NDRRA	North Dakota Renewable Resource Cost Recovery Rider Adjustment
NICF	Notice of Interest to Construct Facilities
NPCA	National Parks Conservation Association
Northern Pipe	Northern Pipe Products, Inc.
NO x	Nitrogen Oxide
NSPS	New Source Performance Standards
OTESCO	Otter Tail Energy Services Company
OTP	Otter Tail Power Company
PACE	Partnership in Assisting Community Expansion
PCOR	Plains CO 2 Reduction Partnership
PEM	Power and Energy Market
PM2.5	Particulate Matter Less Than 2.5 Microns
PS	Polystyrene
PSD	Prevention of Significant Deterioration
PTC	Production Tax Credit
PVC	Polyvinyl Chloride
RCRA	Resource Conservation and Recovery Act
SCR	Selective Catalytic Reduction
SDPUC	South Dakota Public Utilities Commission
SEC	Securities and Exchange Commission
SF6	Sulfur Hexaflouride
ShoreMaster	ShoreMaster, Inc.
SIP	State Implementation Plan
SO 2	Sulfur Dioxide
T.O. Plastics	T.O. Plastics, Inc.
Tariff	Energy and Operating Reserve Markets Tariff
TCR	Transmission Cost Recovery
Trinity	Trinity Industries, Inc.
VaR	Value at Risk
Varistar	Varistar Corporation
VIE	Variable Interest Entity
Vinyltech	Vinyltech Corporation
Wylie	E.W. Wylie Corporation

PART I

Item 1.

BUSINESS

(a) General Development of Business

Otter Tail Power Company was incorporated in 1907 under the laws of the State of Minnesota. In 2001, the name was changed to “Otter Tail Corporation” to more accurately represent the broader scope of electric and nonelectric operations and the name Otter Tail Power Company (OTP) was retained for use by the electric utility. On July 1, 2009, Otter Tail Corporation completed a holding company reorganization whereby OTP, which had previously been operated as a division of Otter Tail Corporation, became a wholly owned subsidiary of the new parent holding company named Otter Tail Corporation (the Company). The new parent holding company was incorporated in June 2009 under the laws of the State of Minnesota in connection with the holding company reorganization. The Company’s executive offices are located at 215 South Cascade Street, P.O. Box 496, Fergus Falls, Minnesota 56538-0496 and 4334 18 th Avenue SW, Suite 200, P.O. Box 9156, Fargo, North Dakota 58106-9156. The Company’s telephone number is (866) 410-8780.

The Company makes available free of charge at its internet website (www.ottertail.com) its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, Forms 3, 4 and 5 filed on behalf of directors and executive officers and any amendments to these reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as soon as reasonably practicable after such material is electronically filed with or furnished to the Securities and Exchange Commission (SEC). Information on the Company’s website is not deemed to be incorporated by reference into this Annual Report on Form 10-K.

Otter Tail Corporation and its subsidiaries conduct business primarily in the United States. The Company had approximately 2,286 full-time employees in its continuing operations at December 31, 2012.

In 2011 and 2012, the Company sold several businesses in execution of its announced strategy of realigning its business portfolio to reduce its risk profile and dedicate a greater portion of its resources toward electric utility operations. In 2011, the Company sold Idaho Pacific Holdings, Inc. (IPH), its Food Ingredient Processing business, and E.W. Wylie Corporation (Wylie), its trucking company, which was included in its former Wind Energy segment. In January 2012, the Company sold the assets of Aviva Sports, Inc. (Aviva), a recreational equipment manufacturer and a wholly owned subsidiary of ShoreMaster, Inc. (ShoreMaster), the Company’s waterfront equipment manufacturer. In February 2012, the Company sold DMS Health Technologies, Inc. (DMS), its former Health Services segment business. In November 2012, the Company completed the sale of the assets of DMI Industries, Inc. (DMI), its manufacturer of towers for wind turbines, and exited the wind tower manufacturing business. In December 2012, the Company entered into negotiations to sell the assets of ShoreMaster and completed the sale on February 8, 2013. The Company’s business structure now consists of the following segments: Electric, Manufacturing, Construction and Plastics.

All information in this report, including comparative financial information, has been revised to reflect the continuing operations of the Company’s business segments.

●

Electric includes the production, transmission, distribution and sale of electric energy in Minnesota, North Dakota and South Dakota by OTP. In addition, OTP is an active wholesale participant in the Midwest Independent Transmission System Operator (MISO) markets. OTP’s operations have been the Company’s primary business since 1907. Additionally, Electric also includes Otter Tail Energy Services Company (OTESCO), which provides technical and engineering services.

●

Manufacturing consists of businesses in the following manufacturing activities: contract machining, metal parts stamping and fabrication, and production of material and handling trays and horticultural containers. These businesses have manufacturing facilities in Illinois and Minnesota, and sell products primarily in the United States.

●

Construction consists of businesses involved in commercial and industrial electric contracting and construction of fiber optic and electric distribution systems, water, wastewater and HVAC systems primarily in the central United States.

●

Plastics consists of businesses producing polyvinyl chloride (PVC) pipe in the upper Midwest and Southwest regions of the United States.

The Company’s corporate operating costs include items such as corporate staff and overhead costs, the results of the Company’s captive insurance company and other items excluded from the measurement of operating segment performance. Corporate assets consist primarily of cash, prepaid expenses, investments and fixed assets. Corporate is not an operating segment. Rather, it is added to operating segment totals to reconcile to totals on the Company’s consolidated financial statements.

OTP and OTESCO are wholly owned subsidiaries of the Company. All of the Company’s other businesses are owned by its wholly owned subsidiary, Varistar Corporation (Varistar).

The Company’s current strategy is to continue to review its business portfolio to see where additional opportunities exist to improve its risk profile, improve credit metrics and generate additional sources of cash to support the growth opportunities in its electric utility. The Company has lowered its overall risk by investing in rate base growth opportunities in its Electric segment and divesting certain non-electric operating companies that no longer fit the Company’s portfolio criteria. This strategy is intended to create a more predictable earnings stream, improve the Company’s credit quality and preserve its ability to fund the dividend. The Company’s goal is to deliver annual growth in earnings per share between four to seven percent over the next several years. The growth is expected to come from the substantial increase in the Company’s regulated utility rate base and from planned increased earnings from existing capacity already in place at the Company’s manufacturing and infrastructure businesses. The Company will also evaluate opportunities to allocate capital to potential acquisitions in its Manufacturing segment. Over time, the Company expects the electric utility business will provide approximately 75% to 85% of its overall earnings. The Company expects its Manufacturing and Infrastructure businesses will provide 15% to 25% of its earnings, and will continue to be a fundamental part of its strategy.

In evaluating its portfolio of operating companies, the Company looks for the following characteristics:

●

a threshold level of net earnings and a return on invested capital in excess of the Company’s weighted average cost of capital,

●

a strategic differentiation from competitors and a sustainable cost advantage,

●

a stable or growing industry,

●

an ability to quickly adapt to changing economic cycles, and

●

a strong management team committed to operational excellence.

For a discussion of the Company’s results of operations, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” on pages 38 through 60 of this Annual Report on Form 10-K.

(b) Financial Information about Industry Segments

The Company is engaged in businesses classified into four segments: Electric, Manufacturing, Construction and Plastics. Financial information about the Company’s segments and geographic areas is included in note 2 of “Notes to Consolidated Financial Statements” on pages 80 through 83 of this Annual Report on Form 10-K.

ELECTRIC

General

Electric consists of two businesses: OTP and OTESCO. OTP, headquartered in Fergus Falls, Minnesota, provides electricity to more than 129,000 customers in a service area with outer boundaries that encompass a total expanse of 70,000 square miles of western Minnesota, eastern North Dakota, and northeastern South Dakota. OTESCO, headquartered in Fergus Falls, Minnesota, provides technical and engineering services primarily in North Dakota and Minnesota. The Company derived 41%, 41% and 48% of its consolidated operating revenues from the Electric segment for each of the three years ended December 31, 2012, 2011 and 2010, respectively.

The breakdown of retail electric revenues by state is as follows:

State	2012			2011
Minnesota		48.9	%		48.8	%
North Dakota		42.0			42.2
South Dakota		9.1			9.0
Total		100.0	%		100.0	%

The territory served by OTP is predominantly agricultural. The aggregate population of OTP’s retail electric service area is approximately 230,000. In this service area of 422 communities and adjacent rural areas and farms, approximately 125,646 people live in communities having a population of more than 1,000, according to the 2010 census. The only communities served which have a population in excess of 10,000 are Jamestown, North Dakota (15,427); Bemidji, Minnesota (13,431); and Fergus Falls, Minnesota (13,138). As of December 31, 2012, OTP served 129,786 customers. Although there are relatively few large customers, sales to commercial and industrial customers are significant.

The following table provides a breakdown of electric revenues by customer category. All other sources include gross wholesale sales from utility generation, net revenue from energy trading activity and sales to municipalities.

Customer Category	2012			2011
Commercial		36.0	%		36.2	%
Residential		32.6			32.9
Industrial		25.0			23.8
All Other Sources		6.4			7.1
Total		100.0	%		100.0	%

Wholesale electric energy kilowatt-hour (kwh) sales were 11.8% of total kwh sales for 2012 and 12.9% for 2011. Wholesale electric energy kwh sales decreased by 10.8% between the years while revenue per kwh sold decreased by 14.5%. Activity in the short-term energy market is subject to change based on a number of factors and it is difficult to predict the quantity of wholesale power sales or prices for wholesale power in the future.

Capacity and Demand

As of December 31, 2012 OTP’s owned net-plant dependable kilowatt (kW) capacity was:

Baseload Plants
Big Stone Plant	256,600		kW
Coyote Station		149,100
Hoot Lake Plant		141,600
Total Baseload Net Plant	547,300		kW
Combustion Turbine and Small Diesel Units	108,000		kW
Hydroelectric Facilities	2,800		kW
Owned Wind Facilities (rated at nameplate)
Luverne Wind Farm (33 turbines)	49,500		kW
Ashtabula Wind Center (32 turbines)		48,000
Langdon Wind Center (27 turbines)		40,500
Total Owned Wind Facilities	138,000		kW

The baseload net plant capacity for Big Stone Plant and Coyote Station constitutes OTP’s ownership percentages of 53.9% and 35%, respectively. OTP owns 100% of the Hoot Lake Plant. During 2012, OTP generated about 68.3% of its retail kwh sales and purchased the balance.

In addition to the owned facilities described above OTP had the following purchased power agreements in place on December 31, 2012:

Purchased Wind Power Agreements (rated at nameplate and greater than 2,000 kW)
Edgeley	21,000		kW
Langdon		19,500
Total Purchased Wind	40,500		kW
Other Purchased Power Agreements (in excess of 1 year and 500 kW)
Wisconsin Electric Power Company 1	50,000		kW
Great River Energy 2		50,000
Total Purchased Power	100,000		kW
1 Expires May 2013. 2 Increases to 100,000 kW from June 2013 through May 2017.

OTP has a direct control load management system which provides some flexibility to OTP to effect reductions of peak load. OTP also offers rates to customers which encourage off-peak usage.

OTP’s capacity requirement is based on MISO Module E requirements. OTP is required to have sufficient Planning Resource Credits to meet its monthly weather normalized forecast demand, plus a reserve obligation. OTP met its MISO obligation for all months in 2012. The MISO Resource Adequacy Construct is significantly changed for the 2013/2014 MISO Planning Year. These changes will be effective beginning June 1, 2013. OTP generating capacity combined with additional capacity under purchased power agreements (as described above) and load management control capabilities is expected to meet 2013 system demand and MISO reserve requirements.

Fuel Supply

Coal is the principal fuel burned at the Big Stone, Coyote and Hoot Lake generating plants. Coyote Station, a mine-mouth facility, burns North Dakota lignite coal. Hoot Lake and Big Stone plants burn western subbituminous coal.

The following table shows the sources of energy used to generate OTP’s net output of electricity for 2012 and 2011:

	2012					2011
Sources	Net Kilowatt Hours Generated (Thousands)		% of Total Kilowatt Hours Generated			Net Kilowatt Hours Generated (Thousands)		% of Total Kilowatt Hours Generated
Subbituminous Coal		2,094,293		61.2	%		2,125,170		56.7	%
Lignite Coal		782,358		22.9			1,062,153		28.3
Wind and Hydro		490,387		14.3			527,913		14.1
Natural Gas and Oil		55,637		1.6			33,367		0.9
Total		3,422,675		100.0	%		3,748,603		100.0	%

OTP has the following primary coal supply agreements:

Plant	Coal Supplier	Type of Coal	Expiration Date
Big Stone Plant	Peabody COALSALES, LLC	Wyoming subbituminous	December 31, 2016
Coyote Station	Dakota Westmoreland Corporation	North Dakota lignite	May 4, 2016
Coyote Station	Coyote Creek Mining Company, L.L.C.	North Dakota lignite	December 31, 2040
Hoot Lake Plant	Cloud Peak Energy Resources LLC	Montana subbituminous	December 31, 2014

OTP has about 42% of its coal needs for Big Stone under contract through December 2016.

The contract with Dakota Westmoreland Corporation expires on May 4, 2016. In October 2012, the Coyote Station owners, including OTP, entered into a lignite sales agreement (LSA) with Coyote Creek Mining Company, L.L.C. (CCMC), a subsidiary of The North American Coal Corporation, for the purchase of coal to meet the coal supply requirements of Coyote Station for the period beginning in May 2016 and ending in December 2040. The price per ton to be paid by the Coyote Station owners under the LSA will reflect the cost of production, along with an agreed profit and capital charge. The LSA provides for the Coyote Station owners to purchase the membership interests in CCMC in the event of certain early termination events and also at the end of the term of the LSA.

OTP has about 78% of its coal needs for Hoot Lake Plant under contract through December 2014.

It is OTP’s practice to maintain a minimum 30-day inventory (at full output) of coal at the Big Stone Plant and a 20-day inventory at the Coyote Station and Hoot Lake Plant.

Railroad transportation services to the Big Stone Plant and Hoot Lake Plant are provided under a common carrier rate by the BNSF Railway. The common carrier rate is subject to a mileage-based methodology to assess a fuel surcharge. The basis for the fuel surcharge is the U.S. average price of retail on-highway diesel fuel. No coal transportation agreement is needed for the Coyote Station due to its location next to a coal mine.

The average cost of fuel consumed (including handling charges to the plant sites) per million British Thermal Units for each of the three years 2012, 2011, and 2010 was $2.108, $1.922, and $1.813, respectively.

General Regulation

OTP is subject to regulation of rates and other matters in each of the three states in which it operates and by the federal government for certain interstate operations.

A breakdown of electric rate regulation by each jurisdiction is as follows:

		2012						2011
Rates	Regulation	% of Electric Revenues			% of kwh Sales			% of Electric Revenues			% of kwh Sales
MN Retail Sales	MN Public Utilities Commission		45.2	%		43.4	%		45.1	%		42.2	%
ND Retail Sales	ND Public Service Commission		38.8			36.4			39.1			36.5
SD Retail Sales	SD Public Utilities Commission		8.4			8.5			8.3			8.4
Transmission & Wholesale	Federal Energy Regulatory Commission		7.6			11.7			7.5			12.9
Total			100.0	%		100.0	%		100.0	%		100.0	%

OTP operates under approved retail electric tariffs in all three states it serves. OTP has an obligation to serve any customer requesting service within its assigned service territory. The pattern of electric usage can vary dramatically during a 24-hour period and from season to season. OTP’s tariffs are designed to cover the costs of providing electric service. To the extent that peak usage can be reduced or shifted to periods of lower usage, the cost to serve all customers is reduced. In order to shift usage from peak times, OTP has approved tariffs in all three states for residential demand control, general service time of use and time of day, real-time pricing, and controlled and interruptible service. Each of these specialized rates is designed to improve efficient use of OTP resources, while giving customers more control over their electric bill. OTP also has approved tariffs in its three service territories which allow qualifying customers to release and sell energy back to OTP when wholesale energy prices make such transactions desirable.

With a few minor exceptions, OTP’s electric retail rate schedules provide for adjustments in rates based on the cost of fuel delivered to OTP’s generating plants, as well as for adjustments based on the cost of electric energy purchased by OTP. OTP also credits certain margins from wholesale sales to the fuel and purchased power adjustment. The adjustments for fuel and purchased power costs are presently based on a two month moving average in Minnesota and by the Federal Energy Regulatory Commission (FERC), a three month moving average in South Dakota and a four month moving average in North Dakota. These adjustments are applied to the next billing period after becoming applicable. These adjustments also include an over or under recovery mechanism, which is calculated on an annual basis in Minnesota and on a monthly basis in North Dakota and South Dakota.

The following summarizes the material regulations of each jurisdiction applicable to OTP’s electric operations, as well as any specific electric rate proceedings during the last three years with the Minnesota Public Utilities Commission (MPUC), the North Dakota Public Service Commission (NDPSC), the South Dakota Public Utilities Commission (SDPUC) and the FERC. The Company’s manufacturing and infrastructure businesses are not subject to direct regulation by any of these agencies.

Minnesota

Under the Minnesota Public Utilities Act, OTP is subject to the jurisdiction of the MPUC with respect to rates, issuance of securities, depreciation rates, public utility services, construction of major utility facilities, establishment of exclusive assigned service areas, contracts and arrangements with subsidiaries and other affiliated interests, and other matters. The MPUC has the authority to assess the need for large energy facilities and to issue or deny certificates of need, after public hearings, within one year of an application to construct such a facility.

Pursuant to the Minnesota Power Plant Siting Act, the MPUC has authority to select or designate sites in Minnesota for new electric power generating plants (50,000 kW or more) and routes for transmission lines (100 kilovolt (kV) or more) in an orderly manner compatible with environmental preservation and the efficient use of resources, and to certify such sites and routes as to environmental compatibility after an environmental impact study has been conducted by the Minnesota Department of Commerce (MNDOC) and the Office of Administrative Hearings has conducted contested case hearings.

The Minnesota Division of Energy Resources, part of the MNDOC, is responsible for investigating all matters subject to the jurisdiction of the MNDOC or the MPUC, and for the enforcement of MPUC orders. Among other things, the MNDOC is authorized to collect and analyze data on energy including the consumption of energy, develop recommendations as to energy policies for the governor and the legislature of Minnesota and evaluate policies governing the establishment of rates and prices for energy as related to energy conservation. The MNDOC also has the power, in the event of energy shortage or for a long-term basis, to prepare and adopt regulations to conserve and allocate energy.

2010 General Rate Case Filing —OTP filed a general rate case on April 2, 2010 requesting an 8.01% base rate increase as well as a 3.8% interim rate increase. On May 27, 2010, the MPUC issued an order accepting the filing, suspending rates, and approving the interim rate increase, as requested, to be effective with customer usage on and after June 1, 2010. The MPUC held a hearing to decide on the issues in the rate case on March 25, 2011 and issued a written order on April 25, 2011. The MPUC authorized a revenue increase of approximately $5.0 million, or 3.76% in base rate revenues, excluding the effect of moving recovery of wind investments to base rates. The MPUC’s written order included: (1) recovery of Big Stone II costs over five years, (2) moving recovery of wind farm assets from rider recovery to base rate recovery, (3) transfer of a portion of Minnesota Conservation Improvement Program (MNCIP) costs from rider recovery to base rate recovery, (4) transfer of the investment in two transmission lines from rider recovery to base rate recovery, and (5) changing the mechanism for providing customers with a credit for margins earned on asset-based wholesale sales of electricity from a credit to base rates to a credit to the Minnesota Fuel Clause Adjustment. Final rates went into effect October 1, 2011. The overall increase to customers was approximately 1.6% compared to the authorized interim rate increase of 3.8%, which resulted in an interim rate refund to Minnesota retail electric customers of approximately $3.9 million in the fourth quarter of 2011. Pursuant to the order, OTP’s allowed rate of return on rate base increased from 8.33% to 8.61% and its allowed rate of return on equity increased from 10.43% to 10.74%. OTP’s authorized rates of return are based on a capital structure of 48.28% long term debt and 51.72% common equity.

Conservation Improvement Programs —Under Minnesota law, every regulated public utility that furnishes electric service must make annual investments and expenditures in energy conservation improvements, or make a contribution to the state’s energy and conservation account, in an amount equal to at least 1.5% of its gross operating revenues from service provided in Minnesota. The Next Generation Energy Act of 2007, passed by the Minnesota legislature in May 2007, transitions from a conservation spending goal to a conservation energy savings goal.

The MNDOC may require a utility to make investments and expenditures in energy conservation improvements whenever it finds that the improvement will result in energy savings at a total cost to the utility less than the cost to the utility to produce or purchase an equivalent amount of a new supply of energy. Such MNDOC orders can be appealed to the MPUC. Investments made pursuant to such orders generally are recoverable costs in rate cases, even though ownership of the improvement may belong to the property owner rather than the utility. OTP recovers conservation related costs not included in base rates under the MNCIP through the use of an annual recovery mechanism approved by the MPUC.

A written order was issued by the MPUC on January 11, 2012 approving the recovery of $3.5 million in 2010 MNCIP financial incentives. Beginning in January 2012, OTP’s MNCIP Conservation Cost Recovery Adjustment (CCRA) increased from 3.0% to 3.8% for all Minnesota retail electric customers.

OTP recognized $2.2 million in MNCIP financial incentives in 2011 relating to 2011 program results. On March 30, 2012 OTP submitted its annual 2011 financial incentive filing request for $2.6 million and recognized an additional $0.4 million of incentive related to 2011 in 2012. In December 2012, the MPUC approved the recovery of $2.6 million in financial incentives for 2011 and also ordered a change in the MNCIP cost recovery methodology used by OTP from a percentage of a customer’s bill to an amount per kwh consumed. The written order was issued on December 10, 2012. On January 1, 2013 OTP’s MNCIP surcharge decreased from 3.8% of a customer’s bill to $0.00142 per kwh, which equates to approximately 1.9% of a customer’s bill. The per-kwh cost allocation method is the principle method approved by the MPUC for other electric utilities in Minnesota. OTP recognized $2.6 million of MNCIP financial incentives in 2012 relating to 2012 program results.

OTP had a regulatory asset of $6.1 million for allowable costs and financial incentives eligible for recovery through the MNCIP rider that had not been billed to Minnesota customers as of December 31, 2012.

Integrated Resource Plan (IRP) —Minnesota law requires utilities to submit to the MPUC for approval a 15-year advance IRP. The MPUC’s findings of fact and conclusions regarding resource plans shall be considered prima facie evidence, subject to rebuttal, in Certificate of Need (CON) hearings, rate reviews and other proceedings. Typically, the filings are submitted every two years.

On June 25, 2010 OTP filed its 2011-2025 IRP with the MPUC. The MNDOC requested and was granted an extension of the initial comment period to March 1, 2011. Presentations of the 2011-2025 IRP were made to both the NDPSC and SDPUC. Approximately 60% of the 2011-2025 IRP is comprised of improvements at existing resources and wholesale energy purchases similar to existing levels. The remaining 40% of the plan is comprised of the following components: 64% natural gas simple cycle combustion turbines, 21% conservation and demand response, and 15% wind generation. Capacity additions proposed in the 2011-2025 IRP are as follows:

Resource	Proposed
Natural gas	213 MW
Demand Response/Conservation	70 MW
Wind	50 MW

On December 20, 2011 and February 9, 2012, respectively, the MPUC approved and issued a written order approving OTP’s 2011-2025 IRP, subject to the following conditions, among others:

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Preparation and submission of a base-load diversification study specifically focused on evaluating retirement and repower options for Hoot Lake Plant to be filed no later than November 8, 2012. This study should evaluate the costs and OTP’s plans related to the Environmental Protection Agency’s (EPA) rules and how they might impact OTP operations. It also should include implications to transmission system reliability of any changes to Hoot Lake Plant.

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Future OTP IRPs should include carbon dioxide (CO 2 ) costs at the mid-point of the commission-approved range in the base case and also should include market costs for sulfur dioxide (SO 2 ) allowances. Future OTP IRPs should use the most current MISO long-term wind capacity credit or an average of its historical wind capacity credits.

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OTP should increase its wind additions to 100 megawatts (MW) from the 50 MW of additional wind included in its five-year preferred plan, assuming the prices are reasonable.

For resource planning purposes, the MPUC approved OTP’s 1.2% energy savings target and encouraged OTP to expand its demand-response and energy-efficiency portfolio. OTP’s next IRP filing is due no later than December 1, 2013.

In a January 31, 2013 hearing, the MPUC approved OTP’s recommendation that Hoot Lake Plant add pollution-control equipment at a cost of approximately $10.0 million to comply with EPA mercury and air toxics standards by 2015 and discontinue burning coal in 2020.

Renewable Energy Standards, Conservation, Renewable Resource Riders —The Minnesota legislature has enacted a statute that favors conservation over the addition of new resources. In addition, it requires the use of renewable resources where new supplies are needed, unless the utility proves that a renewable energy facility is not in the public interest. An existing environmental externality law requires the MPUC, to the extent practicable, to quantify the environmental costs associated with each method of electricity generation, and to use such monetized values in evaluating generation resources. The MPUC must disallow any nonrenewable rate base additions (whether within or outside of the state) or any related rate recovery, and may not approve any nonrenewable energy facility in an integrated resource plan, unless the utility proves that a renewable energy facility is not in the public interest. The state has prioritized the acceptability of new generation with wind and solar ranked first and coal and nuclear ranked fifth, the lowest ranking. The MPUC’s current estimate of the range of costs of future CO 2 regulation to be used in modeling analyses for resource plans is $9 to $34/ton of CO 2 commencing in 2012. The MPUC is required to annually update these estimates.

Minnesota has a renewable energy standard which requires OTP to generate or procure sufficient renewable generation such that the following percentages of total retail electric sales to Minnesota customers come from qualifying renewable sources: 12% by 2012; 17% by 2016; 20% by 2020 and 25% by 2025. Under certain circumstances and after consideration of costs and reliability issues, the MPUC may modify or delay implementation of the standards. OTP has acquired renewable resources and expects to acquire additional renewable resources in order to maintain compliance with the Minnesota renewable energy standard. OTP’s compliance with the Minnesota renewable energy standard will be measured through the Midwest Renewable Energy Tracking System.

Under the Next Generation Energy Act of 2007, an automatic adjustment mechanism was established to allow Minnesota electric utilities to recover investments and costs incurred to satisfy the requirements of the renewable energy standard. The MPUC is authorized to approve a rate schedule rider to enable utilities to recover the costs of qualifying renewable energy projects that supply renewable energy to Minnesota customers. Cost recovery for qualifying renewable energy projects can be authorized outside of a rate case proceeding, provided that such renewable projects have received previous MPUC approval. Renewable resource costs eligible for recovery may include return on investment, depreciation, operation and maintenance costs, taxes, renewable energy delivery costs and other related expenses.

The MPUC issued an order on January 12, 2010 finding OTP’s Luverne Wind Farm project eligible for cost recovery through the Minnesota Renewable Resource Adjustment (MNRRA). The 2010 annual MNRRA cost recovery filing was made on December 31, 2009 with a requested effective date of April 1, 2010. The MPUC approved OTP’s petition for a 2010 MNRRA in the third quarter of 2010 with implementation effective September 1, 2010. The 2010 MNRRA was in place from September 1, 2010 through September 30, 2011 with a recovery of $17.0 million.

The recovery of MNRRA costs was moved to base rates as of October 1, 2011 under the MPUC’s April 25, 2011 general rate case order with the exception of the remaining balance of the MNRRA regulatory asset. OTP had a regulatory asset of $0.9 million for amounts eligible for recovery through the MNRRA rider that had not been billed to Minnesota customers as of December 31, 2012. A request for an updated rate to be effective October 1, 2012 was initially filed on June 28, 2012, followed by a revised filing on July 25, 2012. The filing, which is still under review included a request to extend the period of the new rate for 18 months, which would reduce the current balance of unrecovered costs to zero. However, it is now estimated the remaining unrecovered costs will be collected by the end of May 2013, so OTP is planning to make a supplemental filing to request that the current rate be retained until the remaining balance is recovered and that the MNRRA then be suspended.

Transmission Cost Recovery (TCR) Rider —In addition to the MNRRA rider, the Minnesota Public Utilities Act provides a similar mechanism for automatic adjustment outside of a general rate proceeding to recover the costs of new transmission facilities that have been previously approved by the MPUC in a CON proceeding, certified by the MPUC as a Minnesota priority transmission project, made to transmit the electricity generated from renewable generation sources ultimately used to provide service to the utility’s retail customers, or exempt from the requirement to obtain a Minnesota CON. Such TCR riders allow a return on investment at the level approved in a utility’s last general rate case. Additionally, following approval of the rate schedule, the MPUC may approve annual rate adjustments filed pursuant to the rate schedule. OTP’s initial request for approval of a TCR rider was granted by the MPUC on January 7, 2010, and became effective February 1, 2010.

OTP requested recovery of its transmission investments being recovered through its Minnesota TCR rider rate as part of its general rate case filed on April 2, 2010. In its April 25, 2011 general rate case order, the MPUC approved the transfer of transmission costs currently being recovered through OTP’s Minnesota TCR rider to recovery in base rates. Final rates went into effect on October 1, 2011. OTP will continue to utilize the rider cost recovery mechanism until the remaining balance of the current transmission projects has been collected as well as to recover costs associated with approved regional projects. OTP filed a request for an update to its Minnesota TCR rider on October 5, 2010. The update to OTP’s Minnesota TCR rider, approved by the MPUC on March 26, 2012, went into effect April 1, 2012.

In this TCR rider update, the MNPUC addressed how to handle utility investments in transmission facilities that qualify for regional cost allocation under the MISO tariff. MISO regional cost allocation allows OTP to recover some of the costs of its transmission investment from the other MISO utilities. On March 26, 2012 the MPUC approved an all-in method for MISO regional cost allocations in which OTP’s retail customers would be responsible for the entire investment OTP made with an offsetting credit for revenues received from other MISO utilities under the MISO tariff.

On May 24, 2012 OTP filed a petition with the MPUC to seek a determination of eligibility for the inclusion of 12 additional transmission related projects in subsequent Minnesota TCR rider filings. On August 22, 2012 the MNDOC filed comments and on August 24, 2012 the Minnesota Office of the Attorney General (MNOAG) filed comments. OTP filed reply comments on September 25, 2012 and supplemental comments on January 8, 2013 describing an agreement reached between OTP, the MNDOC and the MNOAG, to find eligible 3 of the 12 projects. MPUC approval of that agreement is pending. If approval is obtained to include additional projects in the rider, investment in the approved projects will be included in the next annual Minnesota TCR rider rate update filings, and recovery of the investment will begin through the TCR rider rates if subsequently approved by the MPUC. Updated costs associated with existing projects within the Minnesota TCR rider will also be included in the next annual rider rate update filing. OTP had a regulatory liability of $0.5 million as of December 31, 2012 for amounts billed to Minnesota customers that are subject to refund through the Minnesota TCR rider.

Big Stone II Project —OTP and a coalition of six other electric providers filed an application for a CON for the Minnesota portion of the Big Stone II transmission line project on October 3, 2005 and filed an application for a Route Permit for the Minnesota portion of the Big Stone II transmission line project with the MPUC on December 9, 2005. On January 15, 2009, the MPUC approved a motion to grant the CON and Route Permit for the Minnesota portion of the Big Stone II transmission line.

The MPUC granted the CON subject to a number of additional conditions, including but not limited to: (1) fulfilling various requirements relating to renewable energy goals, energy efficiency, community-based energy development projects and emissions reduction; (2) that the generation plant be built as a “carbon capture retrofit ready” facility; (3) that the applicants report to the MPUC on the feasibility of building the plant using ultra-supercritical technology; and (4) that the applicants achieve specific limits on construction costs at $3,000/kW and CO 2 costs at $26/ton.

The CON and Route Permit, required by state law, would have allowed the Big Stone II utilities to construct and upgrade 112 miles of electric transmission lines in western Minnesota for delivery of power from the Big Stone site and from numerous other planned generation projects, most of which are wind energy.

Following OTP’s September 11, 2009 withdrawal from the Big Stone II project and the remaining Big Stone II participants’ November 2, 2009 cancellation of the project, the suitability of the route permits and easements obtained by OTP as a MISO transmission owner for other interconnection customers backfilling through the MISO interconnection process into the Big Stone area continues to be evaluated.

On December 14, 2009 OTP filed a request with the MPUC for deferred regulatory accounting treatment for the costs incurred related to the cancelled Big Stone II plant. OTP requested recovery of the Minnesota portion of its Big Stone II development costs over a five-year period as part of its general rate case filed in Minnesota on April 2, 2010. In a written order issued on April 25, 2011, the MPUC authorized recovery of the Minnesota portion of Big Stone II generation development costs from Minnesota ratepayers over a 60-month recovery period which began on October 1, 2011. The amount of Big Stone II generation costs incurred by OTP that were deemed recoverable from Minnesota ratepayers was $3.2 million (which excludes $3.2 million of project transmission-related costs). As of December 31, 2012, OTP had a regulatory asset of $2.1 million of Big Stone II generation costs to be recovered.

On December 30, 2010 OTP filed a request for an extension of the Minnesota Route Permit for the Big Stone transmission facilities. The request asked to extend the deadline for filing a CON for these transmission facilities until March 17, 2013. The April 25, 2011 MPUC order instructed OTP to transfer the $3.2 million Minnesota share of Big Stone II transmission costs to Construction Work in Progress (CWIP) and to create a tracker account through which any over or under recoveries could be accumulated for refund or recovery determination in future rate cases as a regulatory liability or asset. If determined eligible for recovery under the FERC-approved MISO regional transmission tariff, the Minnesota portion of Big Stone II transmission costs and accumulated Allowance for Funds Used During Construction (AFUDC) will receive rate base treatment and recovery through the FERC-approved MISO regional transmission rates. Any amounts over or under collected through MISO rates will be reflected in the tracker account.

Big Stone Air Quality Control System (AQCS) Request for Advance Determination of Prudence (ADP) —Minnesota law authorizes a public utility to petition the MPUC for an ADP for a project undertaken to comply with federal or state air quality standards of states in which the utility’s electric generation facilities are located, if the project has an expected jurisdictional cost to Minnesota ratepayers of at least $10 million. ADPs can help lower the cost of financing by providing additional regulatory certainty, which ultimately reduces customer costs. On January 14, 2011 OTP filed a petition asking the MPUC for an ADP for the design, construction and operation of the Best-Available Retrofit Technology (BART) compliant air quality control system at Big Stone Plant attributable to serving OTP’s Minnesota customers, and on December 20, 2011 the MPUC granted OTP’s petition. The MPUC’s written order was issued on January 23, 2012.

Capacity Expansion 2020 (CapX2020) —CapX2020 is a joint initiative of eleven investor-owned, cooperative, and municipal utilities in Minnesota and the surrounding region to upgrade and expand the electric transmission grid to ensure continued reliable and affordable service. The CapX2020 companies identified four major transmission projects for the region: (1) the Fargo–Monticello 345 kV Project (the Fargo Project), (2) the Brookings–Southeast Twin Cities 345 kV Project (the Brookings Project), (3) the Bemidji – Grand Rapids 230 kV Project (the Bemidji Project), and (4) the Twin Cities–LaCrosse 345 kV Project. OTP is an investor in the Fargo Project, the Brookings Project and the Bemidji Project.

The Fargo Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of the Fargo Project. The Monticello to St. Cloud portion of the Fargo Project was placed into service on December 21, 2011. Construction is underway for the remaining portions of the project with completion scheduled for the first quarter of 2015. OTP’s share of the costs for the St. Cloud to Fargo portion of the Fargo Project is expected to be $84.2 million.

The Brookings Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of the Brookings Project. The MISO granted unconditional approval of the Brookings Project as a Multi-Value Project (MVP) under the MISO Open Access Transmission, Energy and Operating Reserves Market Tariff (Tariff) in December 2011. This project will be placed in service in segments with the earliest segment being placed in service in the summer of 2013 and the last segment placed in service during the first quarter of 2015. OTP’s share of the costs for the Brookings Project is expected to be $26.0 million.

The Bemidji Project —The Bemidji-Grand Rapids transmission line was fully energized and put in service on September 17, 2012.

Recovery of OTP’s CapX2020 transmission investments will be through the MISO Tariff and the Minnesota, North Dakota and South Dakota TCR riders.

Capital Structure Petition —Minnesota law requires an annual filing of a capital structure petition with the MPUC. In this filing the MPUC reviews and approves the capital structure for OTP. Once the petition is approved, OTP may issue securities without further petition or approval, provided the issuance is consistent with the purposes and amounts set forth in the approved capital structure petition. OTP’s current capital structure petition is in effect until the MPUC issues a new capital structure order for 2013. OTP is required to file its 2013 capital structure petition by May 14, 2013.

North Dakota

OTP is subject to the jurisdiction of the NDPSC with respect to rates, services, certain issuances of securities and other matters. The NDPSC periodically performs audits of gas and electric utilities over which it has rate setting jurisdiction to determine the reasonableness of overall rate levels. In the past, these audits have occasionally resulted in settlement agreements adjusting rate levels for OTP. The North Dakota Energy Conversion and Transmission Facility Siting Act grants the NDPSC the authority to approve sites in North Dakota for large electric generating facilities and high voltage transmission lines. This Act is similar to the Minnesota Power Plant Siting Act described above and applies to proposed new electric power generating plants exceeding 60,000 kW and proposed new transmission lines with a design in excess of 115 kV. OTP is required to submit a ten-year plan to the NDPSC annually.

The NDPSC reserves the right to review the issuance of stocks, bonds, notes and other evidence of indebtedness of a public utility. However, the issuance by a public utility of securities registered with the SEC is expressly exempted from review by the NDPSC under North Dakota state law.

General Rate Case —On November 3, 2008 OTP filed a general rate case in North Dakota requesting an overall revenue increase of approximately $6.1 million, or 5.1%, and an interim rate increase of approximately 4.1%, or $4.8 million annualized, that went into effect on January 2, 2009. In an order issued by the NDPSC on November 25, 2009, OTP was granted an increase in North Dakota retail electric rates of $3.6 million, or approximately 3.0%, which went into effect in December 2009. The NDPSC order authorizing an interim rate increase required OTP to refund North Dakota customers the difference between final and interim rates, with interest. OTP established a refund reserve for revenues collected under interim rates that exceeded the final rate increase. The refund reserve balance of $0.9 million as of December 31, 2009 was refunded to North Dakota customers in January 2010. OTP deferred recognition of $0.5 million in rate case-related filing and administrative costs that are subject to amortization and recovery over a three year period beginning in January 2010. As required by the NDPSC order in the OTP 2008 rate case, OTP submitted a filing for a request to remove the recovery of the costs associated with economic development in base rates in North Dakota. OTP proposed and the NDPSC approved an Economic Development Cost Removal Rider, under which all North Dakota customers will receive a credit of $0.00025 per kwh. The monthly credit was effective with bills rendered on and after January 1, 2011.

Renewable Resource Cost Recovery Rider — On May 21, 2008 the NDPSC approved OTP’s request for a North Dakota Renewable Resource Cost Recovery Rider Adjustment (NDRRA) to enable OTP to recover the North Dakota share of its investments in renewable energy facilities it owns in North Dakota. This rider allows OTP to recover costs associated with new renewable energy projects as they are completed. OTP included investment costs and expenses related to its 32 wind turbines at the Ashtabula Wind Energy Center that became commercially operational in November 2008 in its 2009 annual request to the NDPSC to increase the amount of the NDRRA. An NDRRA of $0.0051 per kwh was approved by the NDPSC on January 14, 2009 and went into effect beginning with billing statements sent on February 1, 2009. Terms of the approved settlement provide for the recovery of accrued costs and returns on investments in renewable energy facilities under the NDRRA over a period of 48 months beginning in January 2010.

In a proceeding that was combined with OTP’s general rate case, the NDPSC reviewed whether to move the costs of the projects being recovered through the NDRRA into base rate cost recovery and whether to make changes to the rider. A settlement of the general rate case and the NDRRA reduced the NDRRA to $0.00369 for the period from December 1, 2009 until the effective date for the next annual NDRRA filing, requested to be April 1, 2010. Because the 2008 annual NDRRA filing was combined with the general rate case proceedings (concluded in November 2009), the 2009 annual filing to establish the 2010 NDRRA (which includes cost recovery for OTP’s investment in its Luverne Wind Farm project) was delayed until December 31, 2009, with a requested effective date of April 1, 2010. Approval for implementation of an updated NDRRA was received in the third quarter of 2010 with implementation effective September 1, 2010.

The 2010 NDRRA was in place for the period of September 1, 2010 through March 31, 2012 with a recovery of $15.6 million. On December 29, 2011 OTP submitted its annual update to the renewable rider with an April 1, 2012 effective date, which was approved by the NDPSC on March 21, 2012. The 2011 NDRRA has an expected recovery of $10.1 million over the period April 1, 2012 through March 31, 2013. OTP has a regulatory asset of $1.6 million for amounts eligible for recovery through the NDRRA rider that have not been billed to North Dakota customers as of December 31, 2012.

Transmission Cost Recovery Rider — North Dakota law provides a mechanism for automatic adjustment outside of a general rate proceeding to recover jurisdictional capital and operating costs incurred by a public utility for new or modified electric transmission facilities. OTP filed a request for an initial North Dakota TCR rider with the NDPSC on April 29, 2011, which was approved by the NDPSC on April 25, 2012, to go into effect May 1, 2012. On August 31, 2012 OTP filed its annual update to the North Dakota TCR rider rate to reflect updated cost information associated with projects currently in the rider, as well as proposing to include costs associated with ten additional projects for recovery within the rider, which the NDPSC approved on December 12, 2012 to go into effect January 1, 2013. OTP has a regulatory asset of $0.1 million for amounts eligible for recovery through the North Dakota TCR rider that have not been billed to North Dakota customers as of December 31, 2012.

Big Stone II Project —A filing in North Dakota for an ADP of Big Stone II was made by OTP in November 2006. On August 27, 2008, the NDPSC determined that OTP’s participation in Big Stone II was prudent in a range of 121.8 to 130 MW. On January 20, 2010, OTP filed a request with the NDPSC for a determination that continuing with the Big Stone II project would not have been prudent. North Dakota’s ADP statute allows a utility to recover costs, and a reasonable return on the costs pending recovery, for a project previously deemed prudent and for which the NDPSC later makes a determination that continuing with the project was no longer prudent.

On December 14, 2009 OTP filed a request with the NDPSC for deferred regulatory accounting treatment for its costs incurred related to the cancelled Big Stone II project. In an order issued June 25, 2010, the NDPSC authorized recovery of Big Stone II development costs from North Dakota ratepayers, pursuant to a final settlement agreement filed June 23, 2010, between the NDPSC advocacy staff, OTP and the North Dakota Large Industrial Energy Group, which had intervened. The terms of the settlement agreement indicate that OTP’s discontinuation of participation in the project was prudent and OTP should be authorized to recover the portion of costs it incurred related to the Big Stone II generation project. The total amount of Big Stone II generation costs incurred by OTP (which excludes $2.6 million of project transmission-related costs) was determined to be $10.1 million, of which $4.1 million represents North Dakota’s jurisdictional share. The North Dakota portion of Big Stone II generation costs is being recovered over a 36 month period which began August 1, 2010. As of December 31, 2012, OTP had a regulatory asset of $0.9 million of Big Stone II generation costs to be recovered.

The North Dakota’s jurisdictional share of Big Stone II costs incurred by OTP related to transmission is $1.1 million. OTP transferred the North Dakota share of Big Stone II transmission costs to CWIP, with such costs subject to AFUDC continuing from September 2009. If construction of all or a portion of the transmission facilities commences within three years of the NDPSC order approving the settlement agreement, the North Dakota portion of Big Stone II transmission costs and accumulated AFUDC shall be included in the rate base investment for these future transmission facilities. If construction is not commenced on any of the transmission facilities within three years of the NDPSC order approving the settlement agreement, OTP may petition the NDPSC to either continue accounting for these costs as CWIP or to commence recovery of such costs.

Big Stone Plant AQCS Request for ADP —An application for an ADP filed by OTP with the NDPSC on May 20, 2011 was approved on May 9, 2012.

CapX2020 Request for Advance Determination of Prudence —On October 5, 2009 OTP filed an application for an ADP with the NDPSC for its proposed participation in three of the four Group 1 projects: the Fargo Project, the Brookings Project and the Bemidji Project. An administrative law judge conducted an evidentiary hearing on the application in May 2010. On October 6, 2010 the NDPSC adopted an order approving a settlement between OTP and intervener NDPSC advocacy staff, and issued an ADP to OTP for participation in the three Group 1 projects. The order is subject to a number of terms and conditions in addition to the settlement agreement, including the provision of additional information on the eventual resolution of cost allocation issues relevant to the Brookings Project and its associated impact on North Dakota. On April 29, 2011, OTP filed its compliance filing with the NDPSC, seeking a determination of continued prudence for OTP’s investment in the Brookings Project. The NDPSC approved the request for an ADP for the Brookings Project on November 10, 2011 conditioned on the MISO MVP cost allocation remaining materially unchanged . The MISO granted unconditional approval of the Brookings Project as an MVP under the MISO Tariff in December 2011.

CapX2020 - Fargo Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of the Fargo Project. Completion of all phases of the Fargo Project is scheduled for the first quarter of 2015. OTP’s share of the costs of the Fargo Project is expected to be $84.2 million.

South Dakota

Under the South Dakota Public Utilities Act, OTP is subject to the jurisdiction of the SDPUC with respect to rates, public utility services, establishment of assigned service areas and other matters. Under the South Dakota Energy Facility Permit Act, the SDPUC has the authority to approve sites in South Dakota for large energy conversion facilities (100,000 kW or more) and transmission lines with a design of 115 kV or more.

2010 General Rate Case Filing —On August 20, 2010 OTP filed a general rate case with the SDPUC requesting an overall revenue increase of approximately $2.8 million, or just under 10.0%, which includes, among other things, recovery of investments and expenses related to renewable resources. On September 28, 2010 the SDPUC suspended OTP’s proposed rates for a period of 180 days to allow time to review OTP’s proposal. On January 19, 2011 OTP submitted a proposal to use current rate design to implement an interim rate in South Dakota to be effective on and after February 17, 2011. On January 26, 2011 OTP submitted an amended proposal to use a lower interim rate increase than originally proposed. At its February 1, 2011 meeting, the SDPUC approved OTP’s request to implement interim rates using current rate design and the lower interim increase to be effective on and after February 17, 2011. On April 21, 2011, the SDPUC issued its written order approving an overall final revenue increase of approximately $643,000 (2.32%) and an overall rate of return on rate base of 8.50% for the interim rates and final rates. Final rates were effective with bills rendered on and after June 1, 2011.

Transmission Cost Recovery Rider —South Dakota law provides a mechanism for automatic adjustment outside of a general rate proceeding to recover jurisdictional capital and operating costs incurred by a public utility for new or modified electric transmission facilities. OTP submitted a request for an initial South Dakota TCR rider to the SDPUC on November 5, 2010. The South Dakota TCR was approved by the SDPUC and implemented on December 1, 2011. OTP billed $570,000 to South Dakota customers under the TCR rider from December 1, 2011 through December 31, 2012 and had a regulatory asset of $2,000 for amounts eligible for recovery through the South Dakota TCR rider that had not been billed to South Dakota customers as of December 31, 2012. On September 4, 2012, OTP filed its annual update to the South Dakota TCR rider rate. The request is currently under review by the SDPUC.

Big Stone II Project —On December 14, 2009 OTP filed a request with the SDPUC for deferred regulatory accounting treatment for its costs incurred related to the cancelled Big Stone II plant. The SDPUC approved OTP’s request for deferred accounting treatment on February 11, 2010. OTP requested recovery of the South Dakota portion of its Big Stone II development costs over a five-year period as part of its general rate case filed in South Dakota on August 20, 2010. In the first quarter of 2011, the SDPUC approved recovery of the South Dakota portion of Big Stone II generation development costs totaling approximately $1.0 million from South Dakota ratepayers over a ten-year period beginning in February 2011 with the implementation of interim rates. OTP will be allowed to earn a return on the amount subject to recovery over the ten-year recovery period. OTP transferred the South Dakota portion of the remaining Big Stone II transmission costs to CWIP, with such costs subject to AFUDC and recovery in future FERC-approved MISO rates or retail rates. On July 31, 2012 the SDPUC approved the transfer of the Big Stone II transmission route permits from the original Big Stone II transmission owners to OTP.

Big Stone Plant AQCS —On March 30, 2012 OTP requested approval from the SDPUC for an Environmental Cost Recovery Rider (ECRR) to recover costs associated with the Big Stone Plant AQCS, with a proposed effective date of October 1, 2012. This rider is designed to recover the revenue requirements plus carrying charges of the Big Stone AQCS project while under construction as well as after completion of the project until placed into base rates through the filing of a rate case. For the initial period of October 1, 2012 through September 30, 2013, OTP is requesting revenue requirement recovery on expenditures incurred for the Big Stone Plant AQCS. The request is currently under review by the SDPUC.

CapX2020 Brookings–Southeast Twin Cities 345 kV Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of this project. The MISO granted unconditional approval of the Brookings Project as an MVP under the MISO Tariff in December 2011. This project will be placed in service in segments with the earliest segment being placed in service in the summer of 2013 and the last segment placed in service during the first quarter of 2015. OTP’s share of the costs of the Brookings Project is expected to be $26.0 million.

Energy Efficiency Plan —The SDPUC has encouraged all investor-owned utilities in South Dakota to be part of an Energy Efficiency Partnership to significantly reduce energy use

On June 16, 2010 OTP filed a request with the SDPUC for approval of updates to its 2010 South Dakota Energy Efficiency Plan and approval for the continuation of the program in 2011. OTP requested increases in energy and demand savings goals and increases in related financial incentives for both 2010 and the requested 2011 program. In an order issued on July 27, 2010 the SDPUC approved OTP’s request for updated energy, demand and participation goals for continuation of the program into 2011.

On April 29, 2011 OTP filed a request with the SDPUC for approval of a 2010 financial incentive of $73,415 and a surcharge adjustment of $0.00063 on South Dakota customers’ bills. On May 25, 2011 OTP filed a request with the SDPUC for approval of updates to its 2012-2013 South Dakota Energy Efficiency Plan. The SDPUC approved the 2012-2013 plan with a maximum available incentive payment limited to 30% of the budget amount provided in the plan, or $84,000.

FERC

Wholesale power sales and transmission rates are subject to the jurisdiction of the FERC under the Federal Power Act of 1935, as amended. The FERC is an independent agency, which has jurisdiction over rates for wholesale electricity sales, transmission and sale of electric energy in interstate commerce, interconnection of facilities, and accounting policies and practices. Filed rates are effective after a one day suspension period, subject to ultimate approval by the FERC.

Effective January 1, 2010 the FERC authorized OTP’s implementation of a forward looking formula transmission rate under the MISO Tariff. OTP was also authorized by the FERC to recover in its formula rate (1) 100% of prudently incurred CWIP in rate base and (2) 100% of prudently incurred costs of transmission facilities that are cancelled or abandoned for reasons beyond OTP’s control (Abandoned Plant Recovery) specifically for three regional transmission CapX2020 projects that OTP is investing in: the Fargo Project, the Bemidji Project and the Brookings Project.

On December 16, 2010 the FERC approved the cost allocation for a new classification of projects in MISO called MVPs. MVPs are designed to enable the region to comply with energy policy mandates and to address reliability and economic issues affecting multiple transmission zones within the MISO region. The cost allocation is designed to ensure that the costs of transmission projects with regional benefits are properly assigned to those who benefit. On October 20, 2011 the FERC reaffirmed the MVP cost allocation on rehearing. The MVP cost allocation is currently being challenged in the Seventh Circuit of the United States Court of Appeals.

On November 3, 2011 OTP filed with the FERC to request transmission incentive rate treatment for two MVPs. The two MVPs, which were granted approval by MISO on December 8, 2011, are the Big Stone South–Brookings Project and the Ellendale–Big Stone South Project. On December 30, 2011, the FERC approved OTP’s request. The approved incentive rate treatment provides for the inclusion in rate base of in-process construction costs during development and construction of the projects and, in the event that either of the projects is abandoned for reasons outside of OTP’s control, will allow OTP to petition the FERC for recovery of any abandonment plant costs on the basis that the costs were prudently incurred. Effective on January 1, 2012 the FERC authorized OTP to recover 100% CWIP and Abandoned Plant Recovery on the Big Stone South–Brookings Project and the Ellendale–Big Stone South Project. OTP’s total expected capital investment in these two projects in the years 2012 through 2016 is approximately $117.7 million.

The Big Stone South – Brookings Project —OTP is jointly developing this project with Xcel Energy. A Notice of Intent to Construct Facilities (NICF) was filed with the SDPUC on February 29, 2012. A portion of this line is anticipated to use previously obtained Big Stone II transmission route permits and easements and is expected to be in service in 2017. On July 31, 2012 the SDPUC approved the transfer of the Big Stone II transmission route permits to OTP. In December 2012 a request was filed with the SDPUC for recertification of a portion of the line route that was approved as part of the Big Stone II transmission development. OTP and Xcel Energy expect to make a joint route permit filing in the second quarter of 2013 for the remaining portion of the project.

The Ellendale – Big Stone South Project —OTP is jointly developing this project with Montana-Dakota Utilities Co., a Division of MDU Resources Group, Inc. (MDU). OTP and MDU jointly filed an NICF with the SDPUC in March 2012. This project will require regulatory approval from both the SDPUC and the NDPSC. Route permits are expected to be filed with the respective commissions in the third quarter of 2013.

CapX2020 Brookings Project —In June 2011 the MISO board of directors granted conditional approval of the MVP cost allocation designation under the MISO Tariff for the Brookings Project, and the project was granted unconditional approval in December 2011 as an MVP.

NAEMA

OTP is a member of the North American Energy Marketers Association (NAEMA) which is an independent, non-profit trade association representing entities involved in the marketing of energy or in providing services to the energy industry. NAEMA has over 130 members with operations in 48 states and Canada. NAEMA was formed as a successor organization of the Power and Energy Market (PEM) of the Mid-Continent Area Power Pool (MAPP) in recognition that PEM had outgrown the MAPP region. Power pool sales are conducted continuously through NAEMA in accordance with schedules filed by NAEMA with the FERC.

MRO

OTP is a member of the Midwest Reliability Organization (MRO). The MRO is a non-profit organization dedicated to ensuring the reliability and security of the bulk power system in the north central region of North America, including parts of both the United States and Canada. MRO began operations in 2005 and is one of eight regional entities in North America operating under authority from regulators in the United States and Canada through a delegation agreement with the North American Electric Reliability Corporation. The MRO is responsible for: (1) developing and implementing reliability standards, (2) enforcing compliance with those standards, (3) providing seasonal and long-term assessments of the bulk power system’s ability to meet demand for electricity, and (4) providing an appeals and dispute resolution process.

The MRO region covers roughly one million square miles spanning the provinces of Saskatchewan and Manitoba, the states of North Dakota, Minnesota, Nebraska and the majority of the territory in the states of South Dakota, Iowa and Wisconsin. The region includes more than 100 organizations that are involved in the production and delivery of power to more than 20 million people. These organizations include municipal utilities, cooperatives, investor-owned utilities, a federal power marketing agency, Canadian Crown Corporations, independent power producers and others who have interests in the reliability of the bulk power system. MRO assumed the reliability functions of the MAPP and Mid-America Interconnected Network, both former voluntary regional reliability councils.

MISO

OTP is a member of the MISO. As the transmission provider and security coordinator for the region, the MISO seeks to optimize the efficiency of the interconnected system, provide regional solutions to regional planning needs and minimize risk to reliability through its security coordination, long-term regional planning, market monitoring, scheduling and tariff administration functions. The MISO covers a broad region containing all or parts of 12 states and the Canadian province of Manitoba. The MISO has operational control of OTP’s transmission facilities above 100 kV, but OTP continues to own and maintain its transmission assets.

The MISO Energy Markets commenced operation on April 1, 2005. Through its Energy Markets, MISO seeks to develop options for energy supply, increase utilization of transmission assets, optimize the use of energy resources across a wider region and provide greater visibility of data. MISO aims to facilitate a more cost-effective and efficient use of the wholesale bulk electric system.

The MISO Ancillary Services Market (ASM) commenced on January 6, 2009. The market facilitates the provision of Regulation, Spinning Reserve and Supplemental Reserves. The ASM integrates the procurement and use of regulation and contingency reserves with the existing Energy Market. OTP has actively participated in the market since its commencement.

In December 2008 pursuant to the provisions of the MISO Transmission Owners Agreement, OTP sent MISO a letter of intent to withdraw from MISO on or after December 31, 2009. This procedural step was taken to allow OTP the earliest available opportunity to withdraw from MISO if its concerns about the unintended consequences produced by the MISO Tariff, which imposed a disproportionate allocation of charges to its customers, attributable to the allocation of costs for transmission network upgrades, cannot be equitably resolved. Withdrawal from MISO would require OTP to either secure replacement of and/or self-provide the services currently provided by MISO. OTP’s notice remains in effect.

Other

OTP is subject to various federal and state laws, including the Federal Public Utility Regulatory Policies Act and the Energy Policy Act of 1992, which are intended to promote the conservation of energy and the development and use of alternative energy sources, and the Comprehensive Energy Policy Act of 2005.

Competition, Deregulation and Legislation

Electric sales are subject to competition in some areas from municipally owned systems, rural electric cooperatives and, in certain respects, from on-site generators and cogenerators. Electricity also competes with other forms of energy. The degree of competition may vary from time to time depending on relative costs and supplies of other forms of energy.

The Company believes OTP is well positioned to be successful in a competitive environment. A comparison of OTP’s electric retail rates to the rates of other investor-owned utilities, cooperatives and municipals in the states OTP serves indicates OTP’s rates are competitive.

Legislative and regulatory activity could affect operations in the future. OTP cannot predict the timing or substance of any future legislation or regulation. The Company does not expect retail competition to come to the states of Minnesota, North Dakota or South Dakota in the foreseeable future. There has been no legislative action regarding electric retail choice in any of the states where OTP operates. The Minnesota legislature has in the past considered legislation that, if passed, would have limited the Company’s ability to maintain and grow its nonelectric businesses.

OTP is unable to predict the impact on its operations resulting from future regulatory activities, from future legislation or from future taxes that may be imposed on the source or use of energy.

Environmental Regulation

Impact of Environmental Laws —OTP’s existing generating plants are subject to stringent federal and state standards and regulations regarding, among other things, air, water and solid waste pollution. In the five years ended December 31, 2012 OTP invested approximately $23.5 million in environmental control facilities. The 2013 and 2014 construction budgets include approximately $89.5 million and $99.5 million, respectively, for environmental equipment for existing facilities.

Air Quality - Criteria Pollutants —Pursuant to the Federal Clean Air Act (the CAA), the EPA has promulgated national primary and secondary standards for certain air pollutants.

The primary fuels burned by OTP’s steam generating plants are North Dakota lignite coal and western subbituminous coal. Electrostatic precipitators have been installed at the principal units at the Hoot Lake Plant. Hoot Lake Plant Unit 1, which is the smallest of the three coal-fired units at Hoot Lake Plant, was retired as of December 31, 2005. As a result, OTP believes the units at the Hoot Lake Plant currently meet all presently applicable federal and state air quality and emission standards.

The South Dakota Department of Environment and Natural Resources issued a Title V Operating Permit to the Big Stone site on June 9, 2009 allowing for operation of Big Stone Plant. The Big Stone Plant continues to operate under Title V permit provisions. The Big Stone Plant is currently operating within all presently applicable federal and state air quality and emission standards.

The Coyote Station is equipped with SO 2 removal equipment. The removal equipment—referred to as a dry scrubber—consists of a spray dryer, followed by a fabric filter, and is designed to desulfurize hot gases from the stack. The fabric filter collects spray dryer residue along with the fly ash. The Coyote Station is currently operating within all presently applicable federal and state air quality and emission standards.

The CAA, in addressing acid deposition, imposed requirements on power plants in an effort to reduce national emissions of SO 2 and nitrogen oxides (NO x ).

The national SO 2 emission reduction goals are achieved through a market based system under which power plants are allocated “emissions allowances” that require plants to either reduce their SO 2 emissions or acquire allowances from others to achieve compliance. Each allowance is an authorization to emit one ton of SO 2 . SO 2 emission requirements are currently being met by all of OTP’s generating facilities without the need to acquire other allowances for compliance with the acid deposition provisions of the CAA.

The national NO x emission reduction goals are achieved by imposing mandatory emissions standards on individual sources. All of OTP’s generating facilities met the NO x standards during 2012.

The EPA Administrator signed the Clean Air Interstate Rule (CAIR) on March 10, 2005. The EPA has concluded that SO 2 and NO x are the chief emissions contributing to interstate transport of particulate matter less than 2.5 microns (PM2.5). The EPA also concluded that NO x emissions are the chief emissions contributing to ozone nonattainment.

Twenty-three states and the District of Columbia were found to contribute to ambient air quality PM2.5 nonattainment in downwind states. On that basis, the EPA proposed to cap SO 2 and NO x emissions in the designated states. Minnesota was included among the twenty-three states subject to emissions caps; North Dakota and South Dakota were not included. Twenty-five states were found to contribute to downwind 8-hour ozone nonattainment. None of the states in OTP’s service territory were slated for NO x reduction for 8-hour ozone nonattainment purposes. On July 11, 2008, the U.S. Court of Appeals for the D.C. Circuit vacated CAIR and the CAIR federal implementation plan in its entirety.

On December 23, 2008, the court reconsidered and remanded the case for the EPA to conduct further proceedings consistent with the court’s prior opinion. On January 16, 2009, the EPA proposed a rule that would stay the effectiveness of CAIR and the CAIR federal implementation plan for sources in Minnesota while the EPA conducts notice-and-comment rulemaking on remand from the D.C. Circuit’s decisions in the litigation on CAIR. Remanding the issue to the EPA for further consideration, the court held that the EPA had not adequately addressed errors alleged by Minnesota Power in the EPA’s analysis supporting inclusion of Minnesota. Neither the EPA nor any other party sought rehearing of this part of the court’s CAIR decision. Public Notice of the final rule staying the implementation of CAIR in Minnesota appeared in the November 3, 2009 Federal Register.

On July 6, 2010, the EPA proposed the Transport Rule that essentially would replace the CAIR, but which was proposed to include Minnesota sources due to a finding that Minnesota’s emissions contribute to PM2.5 nonattainment in downwind states. However, its impact on Hoot Lake Plant and OTP’s Solway combustion turbine under the initial proposal would have been less than what had been contemplated under CAIR. The EPA released the final Transport Rule, renamed as the Cross-State Air Pollution Rule (CSAPR), on July 8, 2011. The final rule made several changes as compared to the proposed rule, including a substantial change in the allowance allocation methodology. A number of states and industry representatives challenged the rule, and on December 30, 2011, the U.S. Court of Appeals for the D.C. Circuit granted motions to stay CSAPR pending the court’s resolution of the petitions for review. The Court issued an order on August 21, 2012 to vacate CSAPR. The order requires EPA to continue administering CAIR pending the promulgation of a valid replacement rule. Since CAIR is currently stayed for Minnesota, and does not apply to North or South Dakota, there is no impact to OTP at this time.

Air Quality – Hazardous Air Pollutants —On December 16, 2011 the EPA signed a final rule to reduce mercury and other air toxics emissions from power plants known as the Mercury and Air Toxics Standards (MATS) rule. The final rule became effective on April 16, 2012, and plants will have until April 16, 2015 to comply. However, the EPA is encouraging state permitting authorities to broadly grant a one-year compliance extension to plants that need additional time to install controls. The EPA is also providing a pathway for reliability critical units to obtain an additional year to achieve compliance; however, the EPA has indicated that it believes there will be few, if any situations, in which this pathway is needed. Based on OTP’s review of the final rule, it appears that OTP’s affected units would meet the requirements by installing the AQCS system at Big Stone, by adding fabric filters or upgrading the electrostatic precipitators on Hoot Lake Units 2 and 3, by installing mercury control technology such as activated carbon injection on all units, and by possibly installing dry sorbent injection at Hoot Lake Plant. Emissions monitoring equipment and/or stack testing will also be needed to verify compliance with the standards. Mercury emissions monitoring equipment was previously installed at Big Stone Plant and Coyote Station, but the equipment will need to be re-evaluated for operability under the final rule.

Air Quality – EPA New Source Review Enforcement Initiative —In 1998 the EPA announced its New Source Review Enforcement Initiative targeting coal-fired utilities, petroleum refineries, pulp and paper mills and other industries for alleged violations of the EPA’s New Source Review rules. These rules require owners or operators that construct new major sources or make major modifications to existing sources to obtain permits and install air pollution control equipment at affected facilities. The EPA is attempting to determine if emission sources violated certain provisions of the CAA by making major modifications to their facilities without installing state-of-the-art pollution controls. On January 2, 2001 OTP received a request from the EPA, pursuant to Section 114(a) of the CAA, to provide certain information relative to past operation and capital construction projects at the Big Stone Plant. OTP responded to that request. In March 2003 the EPA conducted a review of the plant’s outage records as a follow-up to their January 2001 data request. A copy of the designated documents was provided to the EPA on March 21, 2003.

On January 8, 2009, OTP received another request from EPA Regions 5 and 8, pursuant to Section 114(a) of the CAA, to provide certain information relative to past operation and capital construction projects at the Big Stone Plant, Coyote Station and Hoot Lake Plant. OTP filed timely responses to the EPA’s requests on February 23, 2009 and March 31, 2009. In July 2009, EPA Region 5 issued a follow-up information request with respect to certain maintenance and repair work at the Hoot Lake Plant. OTP responded to the request. The EPA has not set forth any additional follow-up requests at this time. OTP cannot determine what, if any, actions will be taken by the EPA.

On September 22, 2008, the Sierra Club notified OTP and the two other Big Stone Plant co-owners of its intent to sue alleging violations of the Prevention of Significant Deterioration (PSD) and New Source Performance Standards (NSPS) requirements of the CAA with respect to two past plant activities. The Sierra Club stated that unless the matter was otherwise fully resolved, it intended to file suit in the applicable district courts any time 60 days after the September 22, 2008 letter. As of the date of this report the Sierra Club has not filed suit in the applicable district courts as contemplated in the September 22, 2008 notification. OTP believes that the Big Stone Plant is in material compliance with all applicable requirements of the CAA.

Air Quality – Regional Haze Program —The EPA promulgated the Regional Haze Rule in 1999, and on June 15, 2005 the EPA provided final guidelines for conducting BART determinations under the rule. The Regional Haze Rule requires emissions reductions from BART-eligible sources that are deemed to contribute to visibility impairment in Class I air quality areas. Big Stone Plant is BART eligible, and the South Dakota Department of Environment and Natural Resources (DENR) determined that the plant is subject to emission reduction requirements based on the modeled contribution of the plant emissions to visibility impairment in downwind Class I air quality areas. On November 2, 2009 OTP submitted to DENR its analysis of what control technology should be considered BART for NO X , SO 2 , and particulate matter for the Big Stone Plant.

On January 15, 2010 the DENR provided OTP with a copy of South Dakota’s draft proposed Regional Haze State Implementation Plan (SIP). South Dakota’s draft proposed Regional Haze SIP recommended the SO 2 and particulate matter emission control technology and emission rates that generally followed OTP’s BART analysis. The DENR recommended Selective Catalytic Reduction (SCR) technology for NO x emission reduction in addition to the OTP-recommended separated over-fire air.

South Dakota developed and submitted its implementation plan and associated implementation rules to the EPA on January 21, 2011. The DENR and the EPA agreed on non-substantive rule revisions, which were adopted by the Board of Minerals and Environment and became effective on September 19, 2011. South Dakota submitted a revised implementation plan and associated implementation rules to the EPA on September 19, 2011. EPA signed the final rule approving the South Dakota Regional Haze SIP and the Big Stone BART determination on March 29, 2012, and the final approval became effective on May 29, 2012. Under the South Dakota implementation plan, and its implementing rules, the Big Stone Plant must install and operate a new BART compliant air quality control system to reduce emissions as expeditiously as practicable, but no later than five years after the EPA’s approval. Although studies and evaluations are continuing, the current project cost is estimated to be approximately $490 million (OTP’s share would be $265 million).

On January 14, 2011 OTP filed a petition asking the MPUC for an ADP for the design, construction and operation of the BART compliant air quality control system at Big Stone Plant attributable to serving OTP’s Minnesota customers and on December 20, 2011 the MPUC granted the petition. The MPUC issued its written order granting the ADP on January 23, 2012.

OTP filed an application for an ADP with the NDPSC on May 20, 2011. The NDPSC hired a consulting firm to evaluate the ADP request. Evidentiary hearings were held on November 29, 2011. There was no opposition in this proceeding. OTP and NDPSC advocacy staff entered into a settlement agreement that was filed with the NDPSC on January 9, 2012. The NDPSC held a special meeting on May 9, 2012 at which time the order was approved by all Commissioners. The order contains conditions for reporting and made no determination of the prudence of the technology for NO x control.

On March 30, 2012 OTP requested approval from the SDPUC for an ECRR to recover costs associated with the Big Stone Plant air quality control system. OTP is currently awaiting SDPUC action. This rider is designed to recover the revenue requirements plus carrying charges of the project while under construction as well as after completion of the project until placed into base rates through the filing of a rate case.

Big Stone Plant is currently operating within all presently applicable federal and state air quality and emission standards.

The North Dakota Regional Haze SIP requires that Coyote Station reduce its NO x emissions. On March 14, 2011 the North Dakota Department of Health (NDDOH) issued a construction permit to Coyote Station requiring installation of control equipment to limit its NO x emissions to 0.5 pounds per million Btu as calculated on a 30-day rolling average basis beginning on July 1, 2018. The current estimate of the total cost of the project is $6 million ($2.1 million for OTP’s share). On March 1, 2012 EPA signed a final rule for partial approval of the North Dakota SIP that included the NO x emission rate permit conditions for Coyote Station as proposed by the NDDOH. The rule became effective on May 7, 2012.

In June 2012 the Sierra Club and National Parks Conservation Association (NPCA) filed an appeal of EPA’s approval of the North Dakota Regional Haze SIP to the U.S. Eighth Circuit Court of Appeals. The petition for review was silent on the specific issues that the groups intended to challenge. On the same day Sierra Club/NPCA also separately filed a petition for reconsideration with the EPA. In the petition for reconsideration filed with EPA, Sierra Club/NPCA did not take issue with the Coyote Station NO x limit. However, in the Eighth Circuit appeal, Sierra Club/NPCA filed a brief on October 5, 2012 that included a challenge to EPA’s determinations relative to Coyote Station. The groups are requesting the Eighth Circuit to reverse and remand EPA’s SIP approval. An amicus brief was submitted to the Eighth Circuit on behalf of the Coyote Station on December 18, 2012.

Air Quality – Greenhouse Gas (GHG) Regulation —Combustion of fossil fuels for the generation of electricity is a major stationary source of CO 2 emissions in the United States and globally. OTP is an owner or part-owner of three baseload, coal-fired electricity generating plants and three fuel-oil or natural gas-fired combustion turbine peaking plants with a combined net dependable capacity of 652 MW. In 2012 these plants emitted approximately 3.5 million tons of CO 2.

OTP monitors and evaluates the possible adoption of national, regional, or state climate change and GHG legislation or regulations that would affect electric utilities. Congress previously considered but has not adopted GHG legislation which would require a reduction in GHG emissions, and there is no legislation under active consideration at this time. The likelihood of any federal mandatory CO 2 emissions reduction program being adopted by Congress in the near future, and the specific requirements of any such program, is uncertain.

In April 2007, however, the U.S. Supreme Court issued a decision that determined that the EPA has authority to regulate CO 2 and other GHGs from automobiles as “air pollutants” under the CAA. The Supreme Court sent the case back to the EPA to conduct a rulemaking to determine whether GHG emissions contribute to climate change “which may reasonably be anticipated to endanger public health or welfare.” While this case addressed a provision of the CAA related to emissions from motor vehicles, a parallel provision of the CAA applies to stationary sources such as electric generators. The first step in the EPA rulemaking process was the publication of an endangerment finding in the December 15, 2009 Federal Register where the EPA found that CO 2 and five other GHGs – methane, NO x , hydrofluorocarbons, perfluorocarbons and sulfur hexafluoride – threaten public health and the environment.

The EPA’s final findings respond to the 2007 U.S. Supreme Court decision that GHGs fit within the CAA’s definition of air pollutants. The findings do not in and of themselves impose any emission reduction requirements but rather allowed the EPA to finalize the GHG standards for new light-duty vehicles as part of the joint rulemaking with the Department of Transportation. These standards apply to motor vehicles as of January 2011, which makes GHGs “subject to regulation” under the CAA.

On June 6, 2010 the EPA published a final “tailoring rule” that phases in application of its PSD program to GHG emission sources, including power plants. This program applies to existing sources if there is a physical change or change in the method of operation of the facility that results in a significant net emissions increase. As a result, PSD does not apply on a set timeline as is the case with other regulatory programs, but is triggered depending on what activities take place at a major source. If triggered, the owner or operator of an affected facility must undergo a review which requires the identification and implementation of best-available control technology (BACT) for the regulated air pollutants for which there is a significant net emissions increase, and an analysis of the ambient air quality impacts of the facility.

As of July 2011, sources emitting more than 100,000 tons per year of “CO 2 e”, a measure that converts emissions of each GHG into its carbon dioxide equivalent, are considered “major sources” subject to PSD requirements if they propose to make modifications resulting in a net GHG emissions increase of 75,000 tons per year or more of CO 2 e. OTP does not anticipate making modifications at any of its facilities that would trigger PSD requirements. The South Dakota DENR reviewed OTP’s projected emissions, including GHG emissions, as a result of the Big Stone AQCS Project and the DENR agreed that the emissions did not trigger the need for a PSD permit. Consequently, the DENR issued an Air Quality Construction Permit for the Big Stone AQCS Project on January 6, 2012.

The EPA is developing NSPS for GHGs from electric generating units. The EPA proposed a rule on April 13, 2012 that would require certain new fossil fuel generating plants to meet a CO 2 output based standard. Unlike traditional NSPS rules, the proposed GHG NSPS would not apply to modifications at existing units. It is expected that EPA will issue a final rule in the first half of 2013.

After EPA develops the NSPS, it is anticipated that the EPA will work towards issuing emission guidelines for existing sources under CAA Section 111(d) (111(d) Standard). A 111(d) Standard, unlike the NSPS, applies to an existing source. States are given a period of time to develop plans to implement a 111(d) Standard, and if a state does not develop such a plan, the EPA will prescribe a plan for that state. A “standard of performance” is defined as:

…a standard for emissions of air pollutants which reflects the degree of emission limitation achievable through the application of the best system of emission reduction which (taking into account the cost of achieving such reduction and any non air quality health and environmental impact and energy requirements) the [EPA] Administrator determines has been adequately demonstrated.

Both NSPS and 111(d) Standards involve development of “standards of performance,” but the 111(d) Standard also requires the EPA to consider, “among other factors, remaining useful lives of the sources in the category of sources to which such standard applies.” In general, the standards ultimately developed are more stringent for new sources than for existing sources because existing source standards need to consider the issues involved in retrofitting plants considering what can be achieved under their existing design. The standards also need to be capable of attainment across the category of sources regulated by the standard.

While the potential impact of a 111(d) Standard on OTP’s facilities is not yet known, standards of performance for GHGs, especially for existing sources, are anticipated to focus on efficiency improvements rather than add-on controls. The cost of efficiency improvements that achieve generation of the same amount of power with less fuel used could be offset in whole or in part by reduced fuel costs.

Several states and regional organizations are also developing, or already have developed, state-specific or regional legislative initiatives to reduce GHG emissions through mandatory programs. In 2007, the state of Minnesota passed legislation regarding renewable energy portfolio standards that will require retail electricity providers to obtain 25% of the electricity sold to Minnesota customers from renewable sources by the year 2025. The Minnesota legislature set a January 1, 2008 deadline for the MPUC to establish an estimate of the likely range of costs of future CO 2 regulation on electricity generation. The legislation also set state targets for reducing fossil fuel use, included goals for reducing the state’s output of GHGs, and restricted importing electricity that would contribute to statewide power sector CO 2 emission. The MPUC, in its order dated December 21, 2007, established an estimate of future CO 2 regulation costs at between $4/ton and $30/ton emitted in 2012 and after. However, annual updates of the range are required, and for 2012 and 2013 the range was revised to $9-$34/ton, and the start date to begin using CO 2 costs in resource planning decisions was moved from 2012 to 2017.

The states of North Dakota and South Dakota currently have no proposed or pending legislation related to the regulation of GHG emissions, but North Dakota and South Dakota have 10% renewable energy objectives.

While the eventual outcome of proposed and pending climate change legislation and GHG regulation is unknown, OTP is taking steps to reduce its carbon footprint and mitigate levels of CO 2 emitted in the process of generating electricity for its customers through the following initiatives:

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Supply efficiency and reliability: Between 1990 and 2012, OTP decreased its CO 2 intensity (lbs. of CO 2 /megawatt-hour generated) by nearly 25%.

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Conservation: Since 1992 OTP has helped our customers conserve over 500 MW of demand and nearly 2.5 million cumulative megawatt-hours of electricity. That is roughly equivalent to the amount of electricity that 189,000 average homes would have used in a year. OTP continues to educate customers about energy efficiency and demand-side management and to work with regulators to develop new programs. OTP’s 2011-2025 IRP calls for an additional 70 MW of conservation impacts by 2025.

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Renewable energy: Since 2002, OTP’s customers have been able to purchase 100% of their electricity from wind generation through OTP’s TailWinds program. 40.5 MW of purchased power agreement wind projects and 138 MW of owned wind resources have been on line since December 2009 for serving OTP’s customers.

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Other: OTP will continue to participate as a member of the EPA’s SF6 (sulfur hexafluoride) Emission Reduction Partnership for Electric Power Systems program. The partnership proactively is targeting a reduction in emissions of SF6, a potent GHG. SF6 has a global-warming potential 23,900 times that of CO 2 . Methane has a global-warming potential over 20 times that of CO 2 . OTP participates in carbon sequestration research through the Plains CO 2 Reduction Partnership (PCOR) through the University of North Dakota’s Energy and Environmental Research Center. The PCOR Partnership is a collaborative effort of approximately 100 public and private sector stakeholders working toward a better understanding of the technical and economic feasibility of capturing and storing anthropogenic CO 2 emissions from stationary sources in the central interior of North America.

In late 2009, two federal circuit courts of appeal reversed dismissals of GHG suits and remanded them to district court for trial. OTP is not a party to any of these suits, and does not have an indication that it will be the subject of such a lawsuit. The circuit court opinions, however, open utility companies and other GHG emitters to these actions, which had previously been dismissed by the district courts as nonjustifiable based on the political question doctrine. In 2010, the U.S. Supreme Court took review of one of these cases, while declining review of another. On June 20, 2011, the Supreme Court ruled unanimously that states cannot invoke federal law to force utilities to cut GHG emissions, which was in agreement with the position of utilities and the EPA.

While the future financial impact of any proposed or pending climate change legislation, litigation, or regulation of GHG emissions is unknown at this time, any capital and operating costs incurred for additional pollution control equipment or CO 2 emission reduction measures, such as the cost of sequestration or purchasing allowances, or offset credits, or the imposition of a carbon tax or cap and trade program at the state or federal level could materially adversely affect the Company’s future results of operations, cash flows, and possibly financial condition, unless such costs could be recovered through regulated rates and/or future market prices for energy.

Water Quality —The Federal Water Pollution Control Act Amendments of 1972, and amendments thereto, provide for, among other things, the imposition of effluent limitations to regulate discharges of pollutants, including thermal discharges, into the waters of the United States, and the EPA has established effluent guidelines for the steam electric power generating industry. Discharges must also comply with state water quality standards.

On February 16, 2004 the EPA Administrator signed the final Phase II rule implementing Section 316(b) of the Clean Water Act establishing standards for cooling water intake structures for certain existing facilities. A proposed 316(b) rule was issued on April 20, 2011 to replace the 2004 Phase II rule for existing facilities following its remand by the U.S. Court of Appeals in 2007. Unlike the 2004 Phase II rule, the proposed rule has the potential to affect both Hoot Lake Plant and Coyote Station with the greatest potential effect on Hoot Lake Plant. The final rule is due to be issued in June 2013. OTP is uncertain of the impact on the potentially affected facilities until the EPA releases the final rule.

OTP has all federal and state water permits presently necessary for the operation of the Coyote Station, the Big Stone Plant and the Hoot Lake Plant. OTP owns five small dams on the Otter Tail River, which are subject to FERC licensing requirements. A license for all five dams was issued on December 5, 1991. Total nameplate rating (manufacturer’s expected output) of the five dams is 3,450 kW.

Solid Waste —Permits for disposal of ash and other solid wastes have been issued for the Coyote Station, the Big Stone Plant and the Hoot Lake Plant.

On June 21, 2010 the EPA published a proposed rule that outlines two possible options to regulate disposal of coal ash generated from the combustion of coal by electric utilities under the Resource Conservation and Recovery Act (RCRA). In one option, the EPA would propose to list coal ash destined for disposal in landfills or surface impoundments as “special wastes” subject to regulation under Subtitle C of RCRA. Subtitle C regulations set forth the EPA’s hazardous waste regulatory program, which regulates the generation, handling, transport and disposal of wastes.

The proposal would create a new category of special waste under Subtitle C, so that coal ash would not be classified as hazardous waste, but would be subject to many of the regulatory requirements applicable to hazardous waste. This option would subject coal ash to technical and permitting requirements from the point of generation to final disposal. The EPA is considering whether to impose disposal facility requirements such as liners, groundwater monitoring, fugitive dust controls, financial assurance, corrective action, closure of units, and post-closure care. This option also includes potential requirements for dam safety and stability for surface impoundments, land disposal restrictions, treatment standards for coal ash, and a prohibition on the disposal of treated coal ash below the natural water table. Beneficial re-uses of coal ash would not be subject to these requirements.

Under the second proposed regulatory option, the EPA would regulate the disposal of coal ash under Subtitle D of RCRA, the regulatory program for non-hazardous solid wastes. In this option, the EPA is considering issuing national minimum criteria to ensure the safe disposal of coal ash, which would subject disposal units to location standards, composite liner requirements, groundwater monitoring and corrective action standards for releases, closure and post-closure care requirements, and requirements to address the stability of surface impoundments. Within this option, the EPA is also considering not requiring existing surface impoundments to close or install composite liners and allowing them to continue to operate for their useful life.

This option would not regulate the generation, storage, or treatment of coal ash prior to disposal, and no federal permits would be required. EPA’s proposal also states that the EPA is considering whether to list coal ash as a hazardous substance under the Comprehensive Environmental Response, Compensation, and Liability Act, and includes proposals for alternative methods to adjust the statutory reportable quantity for coal ash. The EPA has not decided which regulatory approach it will take with respect to the management and disposal of coal ash.

While additional requirements may be imposed as part of the EPA’s pending rule that could increase the capital and operating costs of OTP’s facilities, identification of specific costs would be contingent on the requirements of the final rule. The most costly option in the EPA proposal is the option that would regulate all coal ash destined for disposal as special waste. For example, under this option, OTP estimates an annual cost of approximately $5.75 million at its Big Stone Plant. If the EPA chooses the other option, it would impose less cost than this estimate. It is also possible that the new regulations would not require change in the current operation and cost of OTP’s coal ash disposal sites.

At the request of the Minnesota Pollution Control Agency (MPCA), OTP has an ongoing investigation at its former, closed Hoot Lake Plant ash disposal sites. The MPCA continues to monitor site activities under their Voluntary Investigation and Cleanup Program. OTP provided a revised focus feasibility study for remediation alternatives to the MPCA in October 2004. OTP and the MPCA have reached an agreement identifying the remediation technology and OTP completed the projects in 2006. The effectiveness of the remediation is under ongoing evaluation.

The EPA has promulgated various solid and hazardous waste regulations and guidelines pursuant to, among other laws, the Resource Conservation and Recovery Act of 1976, the Solid Waste Disposal Act Amendments of 1980 and the Hazardous and Solid Waste Amendments of 1984, which provide for, among other things, the comprehensive control of various solid and hazardous wastes from generation to final disposal. The states of Minnesota, North Dakota and South Dakota have also adopted rules and regulations pertaining to solid and hazardous waste. To date, OTP has incurred no significant costs as a result of these laws. The future total impact on OTP of the various solid and hazardous waste statutes and regulations enacted by the federal government or the states of Minnesota, North Dakota and South Dakota is not certain at this time.

In 1980, the United States enacted the Comprehensive Environmental Response, Compensation and Liability Act, commonly known as the Federal Superfund law, which was reauthorized and amended in 1986. In 1983, Minnesota adopted the Minnesota Environmental Response and Liability Act, commonly known as the Minnesota Superfund law. In 1988, South Dakota enacted the Regulated Substance Discharges Act, commonly known as the South Dakota Superfund law. In 1989, North Dakota enacted the Environmental Emergency Cost Recovery Act. Among other requirements, the federal and state acts establish environmental response funds to pay for remedial actions associated with the release or threatened release of certain regulated substances into the environment. These federal and state Superfund laws also establish liability for cleanup costs and damage to the environment resulting from such release or threatened release of regulated substances. The Minnesota Superfund law also creates liability for personal injury and economic loss under certain circumstances. OTP has not incurred any significant costs to date related to these laws. OTP is not presently named as a potentially responsible party under the federal or state Superfund laws.

Capital Expenditures

OTP is continually expanding, replacing and improving its electric facilities. During 2012, approximately $102 million in cash was invested for additions and replacements to its electric utility properties. During the five years ended December 31, 2012 gross electric property additions, including construction work in progress, were approximately $495 million and gross retirements were approximately $58 million. OTP estimates that during the five-year period 2013-2017 it will invest approximately $811 million for electric construction, which includes $247 million for OTP’s share of a new Big Stone Plant AQCS and $348 million for transmission projects including $253 million for MVPs and $45 million for CapX2020 transmission projects, excluding $20 million for the Brookings to Southeast Twin Cities CapX2020 MVP project, included in the $253 million above. The remainder of the 2013-2017 anticipated capital expenditures is for asset replacements, additions and improvements across OTP’s generation, transmission, distribution and general plant.

Franchises

At December 31, 2012 OTP had franchises to operate as an electric utility in all but one incorporated municipality that it serves. All franchises are nonexclusive and generally were obtained for 20-year terms, with varying expiration dates. No franchises are required to serve unincorporated communities in any of the three states that OTP serves. OTP believes that its franchises will be renewed prior to expiration.

Employees

At December 31, 2012 OTP had 663 equivalent full-time employees. A total of 393 OTP employees are represented by local unions of the International Brotherhood of Electrical Workers under two separate contracts expiring in the fall of 2013 and 2014. OTP has not experienced any strike, work stoppage or strike vote, and considers its present relations with employees to be good.

MANUFACTURING

General

Manufacturing consists of businesses engaged in the following activities: contract machining, metal parts stamping and fabrication, and production of material handling trays and horticultural containers.

The Company derived 24%, 23% and 20% of its consolidated operating revenues from the Manufacturing segment for each of the three years ended December 31, 2012, 2011 and 2010, respectively. Following is a brief description of each of these businesses:

BTD Manufacturing, Inc. (BTD) , with headquarters located in Detroit Lakes, Minnesota, is a metal stamping and tool and die manufacturer that provides its services mainly to customers in the Midwest. BTD stamps, fabricates, welds and laser cuts metal components according to manufacturers’ specifications primarily for the recreational vehicle, agricultural, lawn and garden, industrial equipment, health and fitness and enclosure industries in its facilities in Detroit Lakes, Otsego and Lakeville, Minnesota. BTD’s location in Washington, Illinois manufactures and fabricates parts for off-road equipment, mining machinery, oil fields and offshore oil rigs, wind industry components, broadcast antennae and farm equipment, and serves several major equipment manufacturers in the Peoria, Illinois area and nationwide, including Caterpillar, Komatsu and Gardner Denver.

T. O. Plastics, Inc. (T.O. Plastics) , located in Otsego and Clearwater, Minnesota, manufactures and sells thermoformed products for the horticulture industry throughout the United States. In addition, T.O. Plastics produces products such as clamshell packing, blister packs, returnable pallets and handling trays for shipping and storing odd-shaped or difficult-to-handle parts for other industries.

Competition

The various markets in which the Manufacturing segment entities compete are characterized by intense competition from both foreign and domestic manufacturers. These markets have many established manufacturers with broader product lines, greater distribution capabilities, greater capital resources, excess capacity, labor advantages and larger marketing, research and development staffs and facilities than the Company’s manufacturing entities.

The Company believes the principal competitive factors in its Manufacturing segment are product performance, quality, price, technical innovation, cost effectiveness, customer service and breadth of product line. The Company’s manufacturing entities intend to continue to compete on the basis of high-performance products, innovative production technologies, cost-effective manufacturing techniques, close customer relations and support, and increasing product offerings.

Raw Materials Supply

The companies in the Manufacturing segment use raw materials in the products they manufacture, including steel, aluminum and Polystyrene (PS) and other plastics resins. Both pricing increases and availability of these raw materials are concerns of companies in the Manufacturing segment. The companies in the Manufacturing segment attempt to pass increases in the costs of these raw materials on to their customers. Increases in the costs of raw materials that cannot be passed on to customers could have a negative effect on profit margins in the Manufacturing segment.

Backlog

The Manufacturing segment has backlog in place to support 2013 revenues of approximately $124 million compared with $115 million one year ago.

Capital Expenditures

Capital expenditures in the Manufacturing segment typically include additional investments in new manufacturing equipment or expenditures to replace worn-out manufacturing equipment. Capital expenditures may also be made for the purchase of land and buildings for plant expansion and for investments in management information systems. During 2012, cash expenditures for capital additions in the Manufacturing segment were approximately $9 million. Total capital expenditures for the Manufacturing segment during the five-year period 2013-2017 are estimated to be approximately $73 million.

Employees

At December 31, 2012 the Manufacturing segment had 980 full-time employees. There are 829 full-time employees at BTD and 151 full-time employees at T.O. Plastics.

CONSTRUCTION

General

The Company derived 17%, 22% and 19% of its consolidated operating revenues from the Construction segment for each of the years ended December 31, 2012, 2011 and 2010, respectively. Following is a brief description of the businesses included in this segment:

Foley Company (Foley) , headquartered in Kansas City, Missouri, provides mechanical and prime contracting services for water and wastewater treatment plants, power generation plants, hospital and pharmaceutical facilities, and other industrial and manufacturing projects across a multi-state service area in the United States.

Aevenia, Inc. (Aevenia) , located in Moorhead, Minnesota, has divisions that provide a full spectrum of electrical design and construction services for the industrial, commercial and municipal business markets, including government, institutional, utility communications and electric distribution.

Competition

Each of the construction companies is subject to competition, as well as the effects of general economic conditions in their respective disciplines and geographic locations. The construction companies must compete with other construction companies primarily in the Upper Midwest and the Central regions of the United States, including companies with greater financial resources, when bidding on new projects. The Company believes the principal competitive factors in the Construction segment are price, quality of work and customer service.

Backlog

The construction companies have backlog in place of $151 million for 2013 compared with $106 million one year ago.

Capital Expenditures

Capital expenditures in this segment typically include investments in additional construction equipment. During 2012, cash expenditures for capital additions in the Construction segment were approximately $2 million. Capital expenditures during the five-year period 2013-2017 are estimated to be approximately $12 million for the Construction segment.

Employees

At December 31, 2012 there were 446 full-time employees in the Construction segment. Foley has 203 employees represented by various unions, including Carpenters and Millwrights, Sheet Metal Workers, Laborers, Operators, Operating Engineers, Pipe Fitters, Steamfitters, Plumbers and Teamsters. Foley has several labor contracts with various expiration dates in 2013 – 111 employees, and 2014 – 90 employees, and one contract covering two employees that expires on May 31, 2017. Foley has not experienced any strike, work stoppage or strike vote, and considers its present relations with employees to be good.

PLASTICS

General

Plastics consists of businesses producing PVC pipe in the Upper Midwest and Southwest regions of the United States. The Company derived 18%, 15% and 14% of its consolidated operating revenues from the Plastics segment for each of the three years ended December 31, 2012, 2011 and 2010, respectively. Following is a brief description of these businesses:

Northern Pipe Products, Inc. (Northern Pipe) , located in Fargo, North Dakota, manufactures and sells PVC pipe for municipal water, rural water, wastewater, storm drainage systems and other uses in the northern, midwestern and western regions of the United States as well as central and western Canada. Production facilities are located in Fargo, North Dakota.

Vinyltech Corporation (Vinyltech) , located in Phoenix, Arizona, manufactures and sells PVC pipe for municipal water, wastewater, water reclamation systems and other uses in the western, southwestern and south-central regions of the United States.

Together these companies have the current capacity to produce approximately 300 million pounds of PVC pipe annually.

Customers

PVC pipe products are marketed through a combination of independent sales representatives, company salespersons and customer service representatives. Customers for the PVC pipe products consist primarily of wholesalers and distributors throughout the upper midwest, southwest and western United States.

Competition

The plastic pipe industry is fragmented and competitive, due to the number of producers, the small number of raw material suppliers and the fungible nature of the product. Due to shipping costs, competition is usually regional, instead of national, in scope. The principal areas of competition are a combination of price, service, warranty, and product performance. Northern Pipe and Vinyltech compete not only against other plastic pipe manufacturers, but also ductile iron, steel, concrete and clay pipe producers. Pricing pressure will continue to affect operating margins in the future.

Northern Pipe and Vinyltech intend to continue to compete on the basis of their high quality products, cost-effective production techniques and close customer relations and support.

Manufacturing and Resin Supply

PVC pipe is manufactured through a process known as extrusion. During the production process, PVC compound (a dry powder-like substance) is introduced into an extrusion machine, where it is heated to a molten state and then forced through a sizing apparatus to produce the pipe. The newly extruded pipe is then pulled through a series of water cooling tanks, marked to identify the type of pipe and cut to finished lengths. Warehouse and outdoor storage facilities are used to store the finished product. Inventory is shipped from storage to distributors and customers mainly by common carrier.

The PVC resins are acquired in bulk and shipped to point of use by rail car. There are a limited number of third party vendors that supply the PVC resin used by Northern Pipe and Vinyltech. Two vendors provided approximately 90% and 97% of total resin purchases in 2012 and 2011, respectively. The supply of PVC resin may also be limited primarily due to manufacturing capacity and the limited availability of raw material components. A majority of U.S. resin production plants are located in the Gulf Coast region, which is subject to risk of damage to the plants and potential shutdown of resin production because of exposure to hurricanes that occur in that part of the United States. The loss of a key vendor, or any interruption or delay in the supply of PVC resin, could disrupt the ability of the Plastics segment to manufacture products, cause customers to cancel orders or require incurrence of additional expenses to obtain PVC resin from alternative sources, if such sources were available. Both Northern Pipe and Vinyltech believe they have good relationships with their key raw material vendors.

Due to the commodity nature of PVC resin and PVC pipe and the dynamic supply and demand factors worldwide, historically the markets for both PVC resin and PVC pipe have been very cyclical with significant fluctuations in prices and gross margins.

Capital Expenditures

Capital expenditures in the Plastics segment typically include investments in extrusion machines, land and buildings and management information systems. During 2012, cash expenditures for capital additions in the Plastics segment were approximately $3 million. Total capital expenditures for the five-year period 2013-2017 are estimated to be approximately $10 million to replace existing equipment.

Employees

At December 31, 2012 the Plastics segment had 142 full-time employees. Northern Pipe had 91 full-time employees and Vinyltech had 51 full-time employees as of December 31, 2012.

Item 1A. RISK FACTORS

RISK FACTORS AND CAUTIONARY STATEMENTS

Our businesses are subject to various risks and uncertainties. Any of the risks described below or elsewhere in this Annual Report on Form 10-K or in our other SEC filings could materially adversely affect our business, financial condition and results of operations.

GENERAL

Federal and state environmental regulation could require us to incur substantial capital expenditures and increased operating costs.

We are subject to federal, state and local environmental laws and regulations relating to air quality, water quality, waste management, natural resources and health safety. These laws and regulations regulate the modification and operation of existing facilities, the construction and operation of new facilities and the proper storage, handling, cleanup and disposal of hazardous waste and toxic substances. Compliance with these legal requirements requires us to commit significant resources and funds toward environmental monitoring, installation and operation of pollution control equipment, payment of emission fees and securing environmental permits. Obtaining environmental permits can entail significant expense and cause substantial construction delays. Failure to comply with environmental laws and regulations, even if caused by factors beyond our control, may result in civil or criminal liabilities, penalties and fines.

Existing environmental laws or regulations may be revised and new laws or regulations may be adopted or become applicable to us. Revised or additional regulations, which result in increased compliance costs or additional operating restrictions, particularly if those costs are not fully recoverable from customers, could have a material effect on our results of operations.

Volatile financial markets and changes in our debt ratings could restrict our ability to access capital and increase borrowing costs and pension plan and postretirement health care expenses.

We rely on access to both short- and long-term capital markets as a source of liquidity for capital requirements not satisfied by cash flows from operations. If we are unable to access capital at competitive rates, our ability to implement our business plans may be adversely affected. Market disruptions or a downgrade of our credit ratings may increase the cost of borrowing or adversely affect our ability to access one or more financial markets.

Disruptions, uncertainty or volatility in the financial markets can also adversely impact our results of operations, the ability of customers to finance purchases of goods and services, and our financial condition, as well as exert downward pressure on stock prices and/or limit our ability to sustain our current common stock dividend level.

Changes in the U.S. capital markets could also have significant effects on our pension plan. Our pension income or expense is affected by factors including the market performance of the assets in the master pension trust maintained for the pension plan for some of our employees, the weighted average asset allocation and long-term rate of return of our pension plan assets, the discount rate used to determine the service and interest cost components of our net periodic pension cost and assumed rates of increase in our employees’ future compensation. If our pension plan assets do not achieve positive rates of return, or if our estimates and assumed rates are not accurate, our earnings may decrease because net periodic pension costs would rise and we could be required to provide additional funds to cover our obligations to employees under the pension plan.

We made a $10.0 million discretionary contribution to our defined benefit pension plan in January 2013. We could be required to contribute additional capital to the pension plan in the future if the market value of pension plan assets significantly declines, plan assets do not earn in line with our long-term rate of return assumptions or relief under the Pension Protection Act is no longer granted.

Any significant impairment of our goodwill would cause a decrease in our asset values and a reduction in our net operating income.

We had approximately $39.0 million of goodwill recorded on our consolidated balance sheet as of December 31, 2012. We have recorded goodwill for businesses in each of our business segments except Electric. If we make changes in our business strategy or if market or other conditions adversely affect operations in any of these businesses, we may be forced to record an impairment charge, which would lead to decreased assets and a reduction in net operating performance. Goodwill is tested for impairment annually or whenever events or changes in circumstances indicate impairment may have occurred. If the testing performed indicates that impairment has occurred, we are required to record an impairment charge for the difference between the carrying amount of the goodwill and the implied fair value of the goodwill in the period the determination is made. The testing of goodwill for impairment requires us to make significant estimates about our future performance and cash flows, as well as other assumptions. These estimates can be affected by numerous factors, including changes in economic, industry or market conditions, changes in business operations, future business operating performance, changes in competition or changes in technologies. Any changes in key assumptions, or actual performance compared with key assumptions, about our business and its future prospects or other assumptions could affect the fair value of one or more business segments, which may result in an impairment charge.

A sustained decline in our common stock price below book value or declines in projected operating cash flows at any of our operating companies may result in goodwill impairments that could adversely affect our results of operations and financial position, as well as financing agreement covenants.

We currently have $7.3 million of goodwill and a $1.1 million indefinite-lived trade name recorded on our consolidated balance sheet related to the acquisition of Foley in 2003. Foley generated a large operating loss in 2012 due to significant cost overruns on certain construction projects. If operating margins do not meet our projections, the reductions in anticipated cash flows from Foley may indicate that its fair value is less than its book value, resulting in an impairment of some or all of the goodwill and indefinite-lived trade name associated with Foley along with a corresponding charge against earnings.

The inability of our subsidiaries to provide sufficient earnings and cash flows to allow us to meet our financial obligations and debt covenants and pay dividends to our shareholders could have an adverse effect on the Company.

Otter Tail Corporation is a holding company with no significant operations of its own. The primary source of funds for payment of our financial obligations and dividends to our shareholders is from cash provided by our subsidiary companies. Our ability to meet our financial obligations and pay dividends on our common stock principally depends on the actual and projected earnings, cash flows, capital requirements and general financial position of our subsidiary companies, as well as regulatory factors, financial covenants, general business conditions and other matters.

Under our $150 million revolving credit agreement we may not permit the ratio of our Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00. OTP may not permit the ratio of its Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00 under its $170 million revolving credit agreement. Both credit agreements contain restrictions on the payment of cash dividends upon a default or event of default. As of December 31, 2012 we were in compliance with the debt covenants.

Under the Federal Power Act, a public utility may not pay dividends from any funds properly included in a capital account. What constitutes “funds properly included in a capital account” is undefined in the Federal Power Act or the related regulations; however, FERC has consistently interpreted the provision to allow dividends to be paid as long as (1) the source of the dividends is clearly disclosed, (2) the dividend is not excessive and (3) there is no self-dealing on the part of corporate officials. The MPUC indirectly limits the amount of dividends OTP can pay to us by requiring an equity-to-total-capitalization ratio between 46.3% and 56.7%. OTP’s equity-to-total-capitalization ratio was 52.0% as of December 31, 2012.

While these restrictions are not expected to affect our ability to pay dividends at the current level in the foreseeable future, there is no assurance that adverse financial results would not reduce or eliminate our ability to pay dividends. Our dividend payout ratio has exceeded our (losses) earnings in each of the last five years.

Economic conditions could negatively impact our businesses.

Our businesses are affected by local, national and worldwide economic conditions. Tightening of credit in financial markets could adversely affect the ability of customers to finance purchases of our goods and services, resulting in decreased orders, cancelled or deferred orders, slower payment cycles, and increased bad debt and customer bankruptcies. Our businesses may also be adversely affected by decreases in the general level of economic activity, such as decreases in business and consumer spending. A decline in the level of economic activity and uncertainty regarding energy and commodity prices could adversely affect our results of operations and our future growth.

If we are unable to achieve the organic growth we expect, our financial performance may be adversely affected.

We expect much of our growth in the next few years will come from major capital investment at existing companies. To achieve the organic growth we expect, we will have to have access to the capital markets, be successful with capital expansion programs related to organic growth, develop new products and services, expand our markets and increase efficiencies in our businesses. Competitive and economic factors could adversely affect our ability to do this. If we are unable to achieve and sustain consistent organic growth, we will be less likely to meet our revenue growth targets, which, together with any resulting impact on our net income growth, may adversely affect the market price of our common shares.

Our plans to grow and realign our business mix through capital projects, acquisitions and dispositions may not be successful, which could result in poor financial performance.

As part of our business strategy, we intend to increase capital expenditures in our existing businesses and to continually assess our mix of businesses and potential strategic acquisitions or dispositions. There are risks associated with capital expenditures including not being granted timely or full recovery of rate base additions in our regulated utility business and the inability to recover the cost of capital additions due to an economic downturn, lack of markets for new products, competition from producers of lower cost or alternative products, product defects or loss of customers. We may not be able to identify appropriate acquisition candidates or successfully negotiate, finance or integrate acquisitions. Future acquisitions could involve numerous risks including: difficulties in integrating the operations, services, products and personnel of the acquired business; and the potential loss of key employees, customers and suppliers of the acquired business. If we are unable to successfully manage these risks, we could face reductions in net income in future periods.

We may, from time to time, sell assets to provide capital to fund investments in our electric utility business or for other corporate purposes, which could result in the recognition of a loss on the sale of any assets sold and other potential liabilities. The sale of any of our businesses also exposes us to additional risks associated with indemnification obligations under the applicable sales agreements and any related disputes.

As part of our business strategy, we continually assess our business portfolio to determine if our operating companies continue to meet our portfolio criteria. A loss on the sale of a business would be recognized if a company is sold for less than its book value.

In certain transactions we retain obligations that have arisen, or subsequently arise, out of our conduct of the business prior to the sale. These obligations are sometimes direct or, in other cases, take the form of an indemnification obligation to the buyer. These obligations include such things as warranty, environmental, and in the case of ShoreMaster, the collection of certain receivables. Unforeseen costs related to these obligations could result in future losses related to the business sold.

Our plans to grow and operate our manufacturing and infrastructure businesses could be limited by state law.

Our plans to grow and operate our manufacturing and infrastructure businesses could be adversely affected by legislation in one or more states that may attempt to limit the amount or level of diversification permitted in a holding company structure that includes a regulated utility company or affiliated nonelectric companies.

Significant warranty claims and remediation costs in excess of amounts normally reserved for such items could adversely affect our results of operations and financial condition.

Depending on the specific product or service, we provide certain warranty terms against manufacturing defects and certain materials. We reserve for warranty claims based on industry experience and estimates made by management. For some of our products we have limited history on which to base our warranty estimate. Our assumptions could be materially different from any actual claim and could exceed reserve balances.

Expenses associated with remediation activities of DMI, our former wind tower manufacturer, could be substantial. The potential exists for multiple claims based on one defect repeated throughout the production process or for claims where the cost to repair or replace the defective part is highly disproportionate to the original cost of the part. If we are required to cover remediation expenses in addition to our regular warranty coverage, we could be required to accrue additional expenses and experience additional unplanned cash expenditures which could adversely affect our consolidated results of operations and financial condition.

We are subject to risks associated with energy markets.

Our businesses are subject to the risks associated with energy markets, including market supply and increasing energy prices. If we are faced with shortages in market supply, we may be unable to fulfill our contractual obligations to our retail, wholesale and other customers at previously anticipated costs. This could force us to obtain alternative energy or fuel supplies at higher costs or suffer increased liability for unfulfilled contractual obligations. Any significantly higher than expected energy or fuel costs would negatively affect our financial performance.

We are subject to risks and uncertainties related to the timing of recovery of deferred tax assets which could have a negative impact on our net income in future periods.

If taxable income is not generated in future periods in certain tax jurisdictions the recovery of deferred taxes related to accumulated tax benefits may be delayed and we may be required to record a reserve related to the uncertainty of the timing of recovery of deferred tax assets related to accumulated taxable losses in those tax jurisdictions. This would have a negative impact on the Company’s net income in the period the reserve is recorded.

We rely on our information systems to conduct our business, and failure to protect these systems against security breaches could adversely affect our business and results of operations. Additionally, if these systems fail or become unavailable for any significant period of time, our business could be harmed.

The efficient operation of our business is dependent on computer hardware and software systems. Information systems are vulnerable to security breach by computer hackers and cyber terrorists. We rely on industry accepted security measures and technology to securely maintain confidential and proprietary information maintained on our information systems. However, these measures and technology may not adequately prevent security breaches. In addition, the unavailability of the information systems or failure of these systems to perform as anticipated for any reason could disrupt our business and could result in decreased performance and increased overhead costs, causing our business and results of operations to suffer. Any significant interruption or failure of our information systems or any significant breach of security could adversely affect our business and results of operations.

ELECTRIC

We may experience fluctuations in revenues and expenses related to our electric operations, which may cause our financial results to fluctuate and could impair our ability to make distributions to shareholders or scheduled payments on our debt obligations, or to meet covenants under our borrowing agreements.

A number of factors, many of which are beyond our control, may contribute to fluctuations in our revenues and expenses from electric operations, causing our net income to fluctuate from period to period. These risks include fluctuations in the volume and price of sales of electricity to customers or other utilities, which may be affected by factors such as mergers and acquisitions of other utilities, geographic location of other utilities, transmission costs (including increased costs related to operations of regional transmission organizations), changes in the manner in which wholesale power is sold and purchased, unplanned interruptions at OTP’s generating plants, the effects of regulation and legislation, demographic changes in OTP’s customer base and changes in OTP’s customer demand or load growth. Electric wholesale margins have been significantly and adversely affected by increased efficiencies in the MISO market. Electric wholesale trading margins could also be adversely affected by losses due to trading activities. Other risks include weather conditions or changes in weather patterns (including severe weather that could result in damage to OTP’s assets), fuel and purchased power costs and the rate of economic growth or decline in OTP’s service areas. A decrease in revenues or an increase in expenses related to our electric operations may reduce the amount of funds available for our existing and future businesses, which could result in increased financing requirements, impair our ability to make expected distributions to shareholders or impair our ability to make scheduled payments on our debt obligations, or to meet covenants under our borrowing agreements.

Actions by the regulators of our electric operations could result in rate reductions, lower revenues and earnings or delays in recovering capital expenditures.

We are subject to federal and state legislation, government regulations and regulatory actions that may have a negative impact on our business and results of operations. The electric rates that OTP is allowed to charge for its electric services are one of the most important items influencing our financial position, results of operations and liquidity. The rates that OTP charges its electric customers are subject to review and determination by state public utility commissions in Minnesota, North Dakota and South Dakota. OTP is also regulated by the FERC. An adverse decision by one or more regulatory commissions concerning the level or method of determining electric utility rates, the authorized returns on equity, implementation of enforceable federal reliability standards or other regulatory matters, permitted business activities (such as ownership or operation of nonelectric businesses) or any prolonged delay in rendering a decision in a rate or other proceeding (including with respect to the recovery of capital expenditures in rates) could result in lower revenues and net income.

Depending on the outcome of the challenges at the 7 th Circuit U.S. Court of Appeals, OTP could be required to absorb a disproportionate share of costs for transmission investments if the MISO MVP cost allocation changes. These costs may not be recoverable through a transmission tariff and could result in reduced returns on invested capital and/or increased rates to OTP’s retail electric customers.

OTP’s electric generating facilities are subject to operational risks that could result in unscheduled plant outages, unanticipated operation and maintenance expenses and increased power purchase costs.

Operation of electric generating facilities involves risks which can adversely affect energy output and efficiency levels. Most of OTP’s generating capacity is coal-fired. OTP relies on a limited number of suppliers of coal, making it vulnerable to increased prices for fuel as existing contracts expire or in the event of unanticipated interruptions in fuel supply. OTP is a captive rail shipper of the BNSF Railway for shipments of coal to its Big Stone and Hoot Lake plants, making it vulnerable to increased prices for coal transportation from a sole supplier. Higher fuel prices result in higher electric rates for OTP’s retail customers through fuel clause adjustments and could make it less competitive in wholesale electric markets. Operational risks also include facility shutdowns due to breakdown or failure of equipment or processes, labor disputes, operator error and catastrophic events such as fires, explosions, floods, intentional acts of destruction or other similar occurrences affecting OTP’s electric generating facilities. The loss of a major generating facility would require OTP to find other sources of supply, if available, and expose it to higher purchased power costs.

Changes to regulation of generating plant emissions, including but not limited to CO 2 emissions, could affect our operating costs and the costs of supplying electricity to our customers.

Existing or new laws or regulations passed or issued by federal or state authorities addressing climate change or reductions of greenhouse gas emissions, such as mandated levels of renewable generation, mandatory reductions in CO 2 emission levels, taxes on CO 2 emissions or cap and trade regimes, could require us to incur significant new costs, which could negatively impact our net income, financial position and operating cash flows if such costs cannot be recovered through rates granted by ratemaking authorities in the states where OTP provides service or through increased market prices for electricity. Debate continues in Congress on the direction and scope of U.S. policy on climate change and regulation of GHGs. Congress has considered but has not adopted GHG legislation which would require a reduction in GHG emissions and there is no legislation under active consideration at this time. The likelihood of any federal mandatory CO 2 emissions reduction program being adopted by Congress in the near future, and the specific requirements of any such program, are uncertain. The EPA has begun to regulate GHG emissions under its “endangerment” finding. The EPA has adopted its first GHG emission control rules for motor vehicles and new source review of stationary sources of GHGs, which became applicable to motor vehicles and stationary sources, respectively, on January 2, 2011. The EPA is developing standards for GHGs from electric generating units and proposed a rule on April 13, 2012 that would require certain new fossil fuel generating plants to meet a CO 2 output based standard. Unlike traditional NSPS rules, the proposed GHG NSPS would not apply to modifications at existing units. It is expected that EPA will issue a final rule in the first half of 2013. Specific requirements of regulation under the CAA’s various programs, and thus their impact on OTP, are uncertain at this time.

MANUFACTURING

Competition from foreign and domestic manufacturers, the price and availability of raw materials and general economic conditions could affect the revenues and earnings of our manufacturing businesses.

Our manufacturing businesses are subject to intense risks associated with competition from foreign and domestic manufacturers, many of whom have broader product lines, greater distribution capabilities, greater capital resources, larger marketing, research and development staffs and facilities and other capabilities that may place downward pressure on margins and profitability. The companies in our Manufacturing segment use a variety of raw materials in the products they manufacture, including steel, aluminum and Polystyrene (PS) and other plastics resins. Costs for these items have increased significantly and may continue to increase. If our manufacturing businesses are not able to pass on cost increases to their customers, it could have a negative effect on profit margins in our Manufacturing segment.

Each of our manufacturing companies has significant customers and concentrated sales to such customers. If our relationships with significant customers should change materially, it would be difficult to immediately and profitably replace lost sales.

CONSTRUCTION

A significant failure or an inability to properly bid or perform on projects or contracts by our construction businesses could lead to adverse financial results and could lead to the possibility of delay or liquidated damages.

The profitability and success of our construction companies require us to identify, estimate and timely bid on profitable projects or contracts. The quantity and quality of projects up for bid at any time is uncertain. Additionally, once a project or contract is awarded, we must be able to perform within cost estimates that were set when the bid was submitted and accepted. A significant failure or an inability to properly bid or perform on projects or contracts could lead to adverse financial results and could lead to the possibility of delay or liquidated damages.

We enter into construction contracts which could expose us to unforeseen costs and costs not within our control, which may not be recoverable and could adversely affect our results of operations and financial condition.

Our construction companies frequently provide services pursuant to fixed-price contracts. Revenues recognized on jobs in progress under fixed-price contracts were $309 million at December 31, 2012 and $343 million at December 31, 2011. Under those contracts, we agree to perform the contract for a fixed price and, as a result, can improve our expected profit by superior contract performance, productivity, worker safety and other factors resulting in cost savings. However, we could incur cost overruns above the approved contract price, which may not be recoverable.

Fixed-price contract prices are established based largely on estimates and assumptions relating to project scope and specifications, personnel and material needs. These estimates and assumptions may prove inaccurate or conditions may change due to factors out of our control, resulting in cost overruns, which we may be required to absorb and that could have a material adverse effect on our business, financial condition and results of our operations. In addition, our profits from these contracts could decrease and we could experience losses if we incur difficulties in performing the contracts or are unable to secure fixed-pricing commitments from our suppliers and subcontractors at the time we enter into fixed-price contracts with our customers.

PLASTICS

Our plastics operations are highly dependent on a limited number of vendors for PVC resin and a limited supply of PVC resin. The loss of a key vendor, or any interruption or delay in the supply of PVC resin, could result in reduced sales or increased costs for our plastics business.

We rely on a limited number of vendors to supply the PVC resin used in our plastics business. Two vendors accounted for approximately 90% of our total purchases of PVC resin in 2012 and approximately 97% of our total purchases of PVC resin in 2011. In addition, the supply of PVC resin may be limited primarily due to manufacturing capacity and the limited availability of raw material components. A majority of U.S. resin production plants are located in the Gulf Coast region, which may increase the risk of a shortage of resin in the event of a hurricane or other natural disaster in that region. The loss of a key vendor or any interruption or delay in the availability or supply of PVC resin could disrupt our ability to deliver our plastic products, cause customers to cancel orders or require us to incur additional expenses to obtain PVC resin from alternative sources, if such sources are available.

We compete against a large number of other manufacturers of PVC pipe and manufacturers of alternative products. Customers may not distinguish our products from those of our competitors.

The plastic pipe industry is fragmented and competitive due to the number of producers and the fungible nature of the product. We compete not only against other PVC pipe manufacturers, but also against ductile iron, steel, concrete and clay pipe manufacturers. Due to shipping costs, competition is usually regional instead of national in scope, and the principal areas of competition are a combination of price, service, warranty, and product performance. Our inability to compete effectively in each of these areas and to distinguish our plastic pipe products from competing products may adversely affect the financial performance of our plastics business.

Reductions in PVC resin prices can negatively affect our plastics business.

The PVC pipe industry is highly sensitive to commodity raw material pricing volatility. Historically, when resin prices are rising or stable, margins and sales volume have been higher and when resin prices are falling, sales volumes and margins have been lower. Reductions in PVC resin prices could negatively affect PVC pipe prices, profit margins on PVC pipe sales and the value of our finished goods inventory.

Item 1B. UNRESOLVED STAFF COMMENTS

None.

Item 2. PROPERTIES

The Coyote Station, which commenced operation in 1981, is a 414,000 kW (nameplate rating) mine-mouth plant located in the lignite coal fields near Beulah, North Dakota and is jointly owned by OTP, Northern Municipal Power Agency, Montana-Dakota Utilities Co. and Northwestern Public Service Company. OTP is the operating agent of the Coyote Station and owns 35% of the plant.

OTP, jointly with Northwestern Public Service Company and Montana-Dakota Utilities Co., owns the 414,000 kW (nameplate rating) Big Stone Plant in northeastern South Dakota which commenced operation in 1975. OTP is the operating agent of Big Stone Plant and owns 53.9% of the plant.

Located near Fergus Falls, Minnesota, the Hoot Lake Plant is comprised of three separate generating units. The oldest Hoot Lake Plant generating unit, constructed in 1948 (7,500 kW nameplate rating), was retired on December 31, 2005. A second unit was added in 1959 (53,500 kW nameplate rating) and a third unit was added in 1964 (75,000 kW nameplate rating) and modified in 1988 to provide cycling capability, allowing this unit to be more efficiently brought online from a standby mode. The two generating units in operation have a combined nameplate rating of 128,500 kW.

OTP owns 27 wind turbines at the Langdon, North Dakota Wind Energy Center with a nameplate rating of 40,500 kW, 32 wind turbines at the Ashtabula Wind Energy Center located in Barnes County, North Dakota with a nameplate rating of 48,000 kW and 33 wind turbines at the Luverne Wind Farm located in Steele County, North Dakota with a nameplate rating of 49,500 kW.

As of December 31, 2012 OTP’s transmission facilities, which are interconnected with lines of other public utilities, consisted of 76 miles of 345 kV lines; 487 miles of 230 kV lines; 862 miles of 115 kV lines; and 3,977 miles of lower voltage lines, principally 41.6 kV. OTP owns the uprated portion of 48 miles of the 345 kV lines, with Minnkota Power Cooperative retaining title to the original 230 kV construction. OTP owns an undivided interest in the remaining 345 kV line miles.

In addition to the properties mentioned above, all of which are utilized by the Electric segment, the Company owns and has investments in offices and service buildings utilized by each of its manufacturing and infrastructure business segments. The Company’s subsidiaries own construction equipment, tools and facilities and equipment used in: the manufacture of PVC pipe, thermoformed products, heavy metal fabricated products, metal parts stamping, fabricating and contract machining.

Management of the Company believes the facilities and equipment described above are adequate for the Company’s present businesses.

Item 3. LEGAL PROCEEDINGS

The Company is the subject of various pending or threatened legal actions and proceedings in the ordinary course of its business. Such matters are subject to many uncertainties and to outcomes that are not predictable with assurance. The Company records a liability in its consolidated financial statements for costs related to claims, including future legal costs, settlements and judgments, where it has assessed that a loss is probable and an amount can be reasonably estimated. The Company believes the final resolution of currently pending or threatened legal actions and proceedings, either individually or in the aggregate, will not have a material adverse effect on the Company’s consolidated financial position, results of operations or cash flows.

Item 3A. EXECUTIVE OFFICERS OF THE REGISTRANT (AS OF FEBRUARY 27, 2013)

Set forth below is a summary of the principal occupations and business experience during the past five years of the executive officers as defined by rules of the SEC. Each of the executive officers has been employed by the Company for more than five years in an executive or management position either with the Company or its wholly owned subsidiary, Otter Tail Power Company, or has served as a director on the Company’s Board of Directors.

NAME AND AGE	DATES ELECTED TO OFFICE	PRESENT POSITION AND BUSINESS EXPERIENCE
Edward J. McIntyre (62)	9/8/11	Present:	President and Chief Executive Officer
George A. Koeck (60)	4/10/00	Present:	Senior Vice President, General Counsel and Corporate Secretary
Kevin G. Moug (53)	4/9/01	Present:	Chief Financial Officer and Senior Vice President
Charles S. MacFarlane (48)	5/1/03	Present:	Senior Vice President, Electric Platform
Shane N. Waslaski (37)	4/11/11	Present:	Senior Vice President, Manufacturing and Infrastructure Platform

On September 8, 2011, on the resignation of John Erickson as President and Chief Executive Officer, the Company’s Board of Directors appointed current director Edward J. (Jim) McIntyre to serve as interim President and Chief Executive Officer. On January 3, 2012, the Company’s Board of Directors appointed Mr. McIntyre to serve as permanent President and Chief Executive Officer of the Company. Mr. McIntyre, 62, is retired Vice President and former Chief Financial Officer of Xcel Energy, Inc. He has been a member of the Board of Directors since 2006.

Mr. Waslaski has worked as a Vice President within the Company’s Manufacturing and Infrastructure platform since 2007 and became an executive officer of the Company on April 11, 2011.

The term of office for each of the executive officers is one year and any executive officer elected may be removed by the vote of the Board of Directors at any time during the term. There are no family relationships between any of the executive officers or directors.

Item 4.

MINE SAFETY DISCLOSURES

Not Applicable.

PART II

Item 5.

MARKET FOR THE REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

The Company’s common stock is traded on the NASDAQ Global Select Market under the NASDAQ symbol “OTTR”. The information required by this Item can be found on Page 38 of this Annual Report on Form 10-K under the heading “Selected Financial Data,” on Page 100 under the heading “Retained Earnings and Dividend Restriction” and on Page 120 under the heading “Supplementary Financial Information.” The Company does not have a publicly announced stock repurchase program. In addition, the Company did not repurchase any equity securities during the three months ended December 31, 2012.

PERFORMANCE GRAPH

COMPARISON OF FIVE-YEAR CUMULATIVE TOTAL RETURN

This graph compares the cumulative total shareholder return on the Company’s common shares for the last five fiscal years with the cumulative return of The NASDAQ Stock Market Index and the Edison Electric Institute Index (EEI) over the same period (assuming the investment of $100 in each vehicle on December 31, 2007, and reinvestment of all dividends).

	2007	2008	2009	2010	2011	2012
OTC	$100.00	$ 70.07	$ 78.76	$ 75.73	$ 78.26	$ 93.54
EEI	$100.00	$ 74.10	$ 82.03	$ 87.80	$105.35	$107.55
NASDAQ	$100.00	$ 61.67	$ 87.93	$104.13	$104.69	$123.85

Item 6.

SELECTED FINANCIAL DATA

(thousands, except number of shareholders and per-share data)	2012			2011			2010			2009			2008
Revenues
Electric	$	350,765		$	342,727		$	344,379		$	314,666		$	340,075
Manufacturing		208,965			189,459			143,072			119,255			156,699
Construction		149,092			184,657			134,222			103,831			157,053
Plastics		150,517			123,669			96,945			80,208			116,452
Corporate Revenues and Intersegment Eliminations		(100	)		(343	)		(721	)		(275	)		(440	)
Total Operating Revenues	$	859,239		$	840,169		$	717,897		$	617,685		$	769,839
Net Income from Continuing Operations	$	38,968		$	34,910		$	26,280		$	22,131		$	30,700
Net (Loss) Income from Discontinued Operations		(44,241	)		(48,153	)		(27,624	)		3,900			4,425
Net (Loss) Income	$	(5,273	)	$	(13,243	)	$	(1,344	)	$	26,031		$	35,125
Operating Cash Flow from Continuing Operations	$	168,986		$	93,678		$	105,934		$	125,646		$	92,767
Operating Cash Flow - Continuing and Discontinued Operations		233,547			104,383			105,017			162,750			111,321
Capital Expenditures - Continuing Operations		115,762			67,360			58,264			160,501			217,604
Total Assets		1,602,337			1,700,522			1,770,555			1,754,678			1,692,587
Long-Term Debt		421,680			471,915			430,807			431,083			333,940
Basic Earnings Per Share - Continuing Operations (1)		1.06			0.95			0.71			0.60			0.95
Basic (Loss) Earnings Per Share - Total (1)		(0.17	)		(0.40	)		(0.06	)		0.71			1.09
Diluted Earnings Per Share - Continuing Operations (1)		1.05			0.95			0.71			0.60			0.95
Diluted (Loss) Earnings Per Share - Total (1)		(0.17	)		(0.40	)		(0.06	)		0.71			1.09
Return on Average Common Equity		(1.1	)%		(2.3	)%		(0.3	)%		3.8	%		6.0	%
Dividends Declared Per Common Share		1.19			1.19			1.19			1.19			1.19
Dividend Payout Ratio		—			—			—			168	%		109	%
Common Shares Outstanding - Year End		36,168			36,102			36,003			35,812			35,385
Number of Common Shareholders (2)		14,584			14,687			14,848			14,923			14,627

(1) Based on average number of shares outstanding.

(2) Holders of record at year end.

Item 7.

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

OVERVIEW

Otter Tail Corporation and its subsidiaries form a diverse group of businesses with operations classified into four segments: Electric, Manufacturing, Construction and Plastics. Our primary financial goals are to maximize earnings and cash flows and to allocate capital profitably toward growth opportunities that will increase shareholder value. Meeting these objectives enables us to preserve and enhance our financial capability by maintaining desired capitalization ratios and a strong interest coverage position and preserving investment grade credit ratings on outstanding securities, which, in the form of lower interest rates, benefits both our customers and shareholders.

Our strategy is to continue to grow our largest business, the regulated electric utility, which will lower our overall risk, create a more predictable earnings stream, improve our credit quality and preserve our ability to fund the dividend. Over time, we expect the electric utility business will provide approximately 75% to 85% of our overall earnings. We expect our manufacturing and infrastructure businesses will provide 15% to 25% of our earnings, and will continue to be a fundamental part of our strategy.

Reliable utility performance along with rate base investment opportunities over the next five years will provide us with a strong base of revenues, earnings and cash flows. We also look to our manufacturing and infrastructure companies to provide organic growth as well. Organic, internal growth comes from new products and services, market expansion and increased efficiencies. We expect much of our growth in these businesses in the next few years will come from utilizing expanded plant capacity from capital investments made in previous years. We will also evaluate opportunities to allocate capital to potential acquisitions in our Manufacturing segment. We are a committed long-term owner and therefore we do not acquire companies in pursuit of short-term gains. However, we will divest operating companies that no longer fit into our strategy and risk profile over the long term.

We have worked to realign our portfolio of businesses and refocus our capital investment in the electric utility. In 2011 and 2012 we sold several businesses in execution of our announced strategy. In 2011 we sold Idaho Pacific Holdings, Inc. (IPH), our Food Ingredient Processing segment business, and E.W. Wylie Corporation (Wylie), our trucking company which was included in our Wind Energy segment. In January 2012 we sold the assets of Aviva Sports, Inc. (Aviva), a recreational equipment manufacturer and wholly owned subsidiary of ShoreMaster, Inc. (ShoreMaster), our waterfront equipment manufacturer. In February 2012 we sold DMS Health Technologies, Inc. (DMS), our Health Services segment business. In November 2012 we completed the sale of the assets of DMI Industries, Inc. (DMI), our manufacturer of towers for wind turbines and exited the wind tower manufacturing business. In December 2012 we entered into negotiations to sell substantially all of the assets of ShoreMaster and completed the sale on February 8, 2013. As a result of these 2011, 2012 and 2013 transactions, our business structure no longer includes Wind Energy, Health Services or Food Ingredient Processing segments, and now includes the remaining four segments listed above.

In evaluating our portfolio of operating companies, we look for the following characteristics:

●

a threshold level of net earnings and a return on invested capital in excess of our weighted average cost of capital,

●

a strategic differentiation from competitors and a sustainable cost advantage,

●

a stable or growing industry,

●

an ability to quickly adapt to changing economic cycles, and

●

a strong management team committed to operational excellence.

Major growth strategies and initiatives in our future include:

●

Planned capital budget expenditures of up to $906 million for the years 2013 through 2017, of which $811 million are for capital projects at Otter Tail Power Company (OTP), including $247 million for OTP’s share of a new air quality control system at Big Stone Plant and $348 million for anticipated expansion of transmission capacity including $253 million for MVPs and $45 million for CapX2020 transmission projects, excluding $20 million for the Brookings to Southeast Twin Cities CapX2020 MVP project, included in the $253 million above. The remainder of the 2013-2017 anticipated capital expenditures is for asset replacements, additions and improvements across OTP’s generation, transmission, distribution and general plant. See “Capital Requirements” section for further discussion.

●

Utilization of existing and potentially expanded plant capacity from capital investments made in our manufacturing and infrastructure businesses.

●

Continued investigation and evaluation of organic growth opportunities and evaluation of opportunities to allocate capital to potential acquisitions in our Manufacturing segment.

In 2012:

●

Our net cash from continuing and discontinued operations was $233.5 million.

●

Our Plastics segment net income increased 142.9% to $14.1 million.

●

Our Manufacturing segment net income increased 29.7% to $10.7 million.

●

Our Electric segment net income of $38.3 million decreased slightly from $38.9 million in 2011.

●

Our Construction segment recorded a net loss of $7.7 million compared with a net loss of $2.2 million in 2011. Net income from Aevenia, Inc. (Aevenia), our electrical design and construction services company, increased $2.2 million while Foley Company (Foley), our mechanical and prime contractor on industrial projects, recorded a net loss increase of $7.7 million as a result cost overruns on several large jobs.

The following table summarizes our consolidated results of operations for the years ended December 31:

(in thousands)	2012			2011
Operating Revenues:
Electric	$	350,679		$	342,633
Manufacturing and Infrastructure		508,560			497,536
Total Operating Revenues	$	859,239		$	840,169
Net Income (Loss) From Continuing Operations:
Electric	$	38,341		$	38,886
Manufacturing and Infrastructure		17,100			11,836
Corporate		(16,473	)		(15,812	)
Total Net Income From Continuing Operations:	$	38,968		$	34,910

Revenue increases in our Plastics, Manufacturing and Electric segments were partially offset by a decrease in revenues from our Construction segment, resulting in a 2.3% increase in consolidated revenues in 2012 compared with 2011. Revenues from our Plastics segment increased $26.8 million as a result of a combination of increased sales volume and higher prices per pound of polyvinyl chloride (PVC) pipe sold. Revenues from our Manufacturing segment increased $19.5 million as a result of higher sales volume due to improved customer demand for the products and services provided by our manufacturing companies. Revenues from our Electric segment increased $8.0 million as a result of: (1) a $4.3 million increase in retail revenue, reflecting increases in transmission cost recovery revenues and revenues from Minnesota customers following implementation of new rates in October 2011, and (2) a $3.6 million increase in Midwest Independent Transmission System Operator (MISO) Schedule 26 transmission tariff revenues, driven in part by returns on, and recovery of, CapX2020 investment costs and operating expenses. Revenues from our Construction segment decreased $35.6 million as Foley’s job volume and revenues recognized on a percentage-of-completion basis declined.

The following table sets forth actual 2012 consolidated diluted earnings per share results against the last forecast we provided for 2012 on a GAAP basis, and also shows the effect on a non-GAAP basis of the early retirement of our $50 million, 8.89% Senior Unsecured Note due 2017 (the Cascade Note).

2012 Earnings Per Share Guidance Range November 5, 2012			2012 GAAP Earnings Per Share	2012 Non- GAAP Items	2012 Non-GAAP Earnings Per Share
	Low	High	2012 GAAP Earnings Per Share	2012 Non- GAAP Items	2012 Non-GAAP Earnings Per Share
Electric	$1.01	$1.06	$1.06	--	$1.06
Manufacturing (without ShoreMaster)	$0.26	$0.30	$0.29	--	$0.29
Net Loss from ShoreMaster	($0.08)	($0.07)	--	--	--
Construction	($0.23)	($0.18)	($0.21)	--	($0.21)
Plastics	$0.32	$0.37	$0.39	--	$0.39
Corporate – Recurring Costs	($0.22)	($0.17)	($0.26)	$0.04	($0.22)
Subtotal	$1.06	$1.31	$1.27	$0.04	$1.31
Corporate – Premium Paid on Debt Extinguishment	($0.22)	($0.22)	($0.22)	$0.22	--
Total – Continuing Operations	$0.84	$1.09	$1.05	$0.26	$1.31
Discontinued Operations:
Net Losses from Discontinued Operations	($1.00)	($0.95)	($1.22)	--	($1.22)
Premium Paid on Debt Extinguishment in Connection with DMI Disposition 1	--	--	--	($0.22)	($0.22)
2012 Interest Expense on Debt Extinguished in Connection with DMI Disposition 1	--	--	--	($0.04)	($0.04)
Total – Discontinued Operations	($1.00)	($0.95)	($1.22)	($0.26)	($1.48)
Total	($0.16)	$0.14	($0.17)	--	($0.17)
1 We retired early the Cascade Note from proceeds generated in connection with the divestiture of DMI. Generally Accepted Accounting Principles require that in order for debt retirement premiums and related interest expense to be reported as discontinued operations, a company must be required by the lender to repay the related debt as a result of the disposition. Although we were not legally obligated to repay the aforementioned note, we believe it is appropriate to associate the 2012 debt prepayment premium and interest expense with our discontinued operations to provide a better indication of future earnings.

Following is a more detailed analysis of our operating results by business segment for the three years ended December 31, 2012, 2011 and 2010, followed by a discussion of our financial position at the end of 2012 and our outlook for 2013.

RESULTS OF OPERATIONS

This discussion and analysis should be read in conjunction with our consolidated financial statements and related notes. See note 2 to our consolidated financial statements for a complete description of our lines of business, locations of operations and principal products and services.

Intersegment Eliminations —Amounts presented in the following segment tables for 2012, 2011 and 2010 operating revenues, cost of goods sold and other nonelectric operating expenses will not agree with amounts presented in the consolidated statements of income due to the elimination of intersegment transactions. The amounts of intersegment eliminations by income statement line item are listed below:

Intersegment Eliminations (in thousands)	2012		2011		2010
Operating Revenues:
Electric	$	86	$	94	$	115
Nonelectric		14		249		606
Cost of Goods Sold		68		122		(57	)
Other Nonelectric Expenses		32		221		778

ELECTRIC

The following table summarizes the results of operations for our Electric segment for the years ended December 31:

(in thousands)	2012		% change			2011		% change			2010
Retail Sales Revenues	$	308,530		1		$	304,181		--		$	305,146
Wholesale Revenues – Company Generation		12,951		(11	)		14,518		(28	)		20,053
Net Revenue – Energy Trading Activity		1,426		(39	)		2,319		(26	)		3,144
Other Revenues		27,858		28			21,709		35			16,036
Total Operating Revenues	$	350,765		2		$	342,727		--		$	344,379
Production Fuel		66,284		(4	)		69,017		(6	)		73,102
Purchased Power – System Use		49,184		13			43,451		(3	)		44,788
Other Operation and Maintenance Expenses		121,069		4			115,863		3			112,174
Asset Impairment		432		(8	)		470		--			--
Depreciation and Amortization		42,051		4			40,283		--			40,241
Property Taxes		10,720		5			10,190		9			9,364
Operating Income	$	61,025		(4	)	$	63,453		(2	)	$	64,710

Electric kilowatt-hours (kwh) Sales (in thousands)	2012		% change			2011		% change			2010
Retail kwh Sales		4,240,789		(1	)		4,291,637		1			4,262,748
Wholesale kwh Sales – Company Generation		476,637		(7	)		510,978		(18	)		624,153
Wholesale kwh Sales – Purchased Power Resold		88,637		(28	)		122,430		(64	)		336,875

2012 compared with 2011

Retail sales revenues increased by $4.3 million as a result of:

●

a $2.6 million increase in transmission cost recovery revenues as a result of increased investment in transmission assets,

●

a $1.8 million interim rate refund recorded in 2011 related to amounts collected under interim rates in Minnesota in 2010,

●

a $1.5 million increase in revenue mainly related to rate design changes implemented in Minnesota in October 2011 on finalization of OTP’s 2010 general rate case, and

●

a $0.9 million increase in retail revenue related to the recovery of increased fuel and purchased power costs,

offset by:

●

a $2.3 million decrease in revenues related to a 1.2% reduction in retail kwh sales between the periods due to an 11% reduction in heating-degree days resulting from significantly milder weather in the first half of 2012 compared to the first half of 2011, partially offset by a 19.6% increase in cooling-degree days in the summer of 2012 compared with the same period in 2011, and

●

a $0.2 million reduction in accrued conservation program cost recovery revenues and incentives.

Wholesale electric revenues from company-owned generation decreased $1.6 million due to a 6.7% decline in wholesale kwh sales in combination with a 4.4% decrease in the average price per wholesale kwh sold. This was related to an 8.7% reduction in kwh generation mainly as a result of two major shutdowns of OTP’s lowest-cost baseload resource, Coyote Station, in 2012. The first occurred in the second quarter of 2012 for seven weeks of scheduled maintenance, and the second occurred on November 27, 2012, when an electrical fault caused major damage to the station’s generator, which needed to be moved offsite for repairs estimated to take 10 to 12 weeks. Lower demand in wholesale markets and low natural gas prices for alternative generation also contributed to the reduction in wholesale electric sales.

Net revenue from energy trading activities, including net mark-to-market gains on forward energy contracts, decreased $0.9 million mainly as a result of a decrease in mark-to-market gains on open energy contracts, along with a reduction in trading activity.

Other electric operating revenues increased $6.1 million as a result of:

●

a $3.6 million increase in MISO Schedule 26 transmission tariff revenues, driven in part by returns on, and recovery of, CapX2020 investment costs and operating expenses,

●

a $1.5 million increase in revenues earned under agreements for shared use of transmission facilities with other regional transmission providers,

●

$0.9 million in MISO Schedule 26A revenue, new in 2012, mainly related to investments in MISO designated MVPs,

●

$0.8 million in revenue earned under a contract to upgrade a distribution system for another regional electric service provider, and

●

a $0.7 million increase in MISO Schedule 1 transmission tariff revenues due to 2011 and 2012 changes in the calculation methodology used to determine Schedule 1 revenues,

offset by:

●

a $1.3 million reduction in revenue related to payments received in 2011 from a transmission cooperative to Otter Tail Energy Services Company (OTESCO) for access rights to construct a high voltage transmission line through a wind farm site where OTESCO owned development rights, and for assistance in obtaining easements from landowners.

The $2.7 million decrease in production fuel costs resulted from a 9.0% decrease in kwhs generated from OTP’s steam-powered and combustion turbine generators, partially offset by a 5.5% increase in the cost of fuel per kwh generated. The decrease in kwh generation was due to the two major maintenance shutdowns of Coyote Station in 2012. The cost of purchased power for retail sales increased $5.7 million as a result of a 28.2% increase in kwhs purchased for system use, partially offset by an 11.7% decrease in the cost per kwh purchased. The increase in kwh purchases was driven by the need to buy replacement power after Coyote Station went off-line in November 2012.

Electric operating and maintenance expenses increased $5.2 million due to the following:

●

a $3.4 million increase in MISO transmission service charges, mainly MISO Schedule 26 charges related to increased investment in transmission facilities by MISO member companies,

●

a $2.2 million increase in labor and benefit expenses mainly due to increases in pension and retiree health benefit costs resulting from a reduction in the discount rate applied to projected benefit obligations,

●

a $1.1 million increase in maintenance expenses at Coyote Station related to its second quarter 2012 seven-week scheduled major maintenance shutdown,

●

a $0.4 million increase in wind farm maintenance service costs, and

●

a $0.3 million increase in maintenance costs at Big Stone Plant,

offset by:

●

a $1.7 million reduction in material and supply costs related to costs incurred in conjunction with a major overhaul of Big Stone Plant in the fourth quarter of 2011, and

●

a $0.4 million reduction in incurred conservation program costs, commensurate with a reduction in accrued revenues related to the future recovery of those costs.

OTESCO recorded asset impairment charges of $0.4 million in the first quarter of 2012 and $0.5 million in the fourth quarter of 2011 related to its wind farm development rights at its Sheridan Ridge and Stutsman County sites in North Dakota, based on market indicators of the value of those assets.

The $1.8 million increase in depreciation expense is related to 2011 property additions, mainly transmission assets.

Property taxes increased $0.5 million due to higher taxes on electric distribution property and increased investments in transmission property.

2011 compared with 2010

Retail sales revenues decreased by $1.0 million as a result of:

●

a $3.1 million reduction in fuel cost recovery revenues related to lower fuel and purchased power costs,

●

a $0.8 million decrease in accrued and recovered conservation improvement program revenues and incentives, and

●

a $0.6 million reduction in Minnesota retail revenues related to an increase in rates that was more than offset by a refund of excess amounts collected under interim rates in effect from June 2010 through September 2011.

These decreases in retail revenue were mostly offset by:

●

a $2.0 million increase in revenue related to a 0.7% increase in kwh sales,

●

a $0.8 million increase in revenues related to the recovery of the North Dakota portion of Big Stone II plant abandonment costs, and

●

a $0.7 million increase in renewable resource and transmission cost recovery revenues related to an increase in transmission costs eligible for recovery under Minnesota and North Dakota transmission cost recovery riders.

Wholesale electric revenues from company-owned generation decreased $5.5 million due to an 18.1% decline in wholesale kwh sales combined with an 11.6% decrease in the average price per wholesale kwh sold. This was the result of an 8.2% reduction in kwh generation at OTP’s generating units related to a scheduled major maintenance shutdown at Big Stone Plant, lower demand in wholesale markets and low natural gas prices. Net gains from energy trading activities, including net mark-to-market gains on forward energy contracts, decreased $0.8 million mainly as a result of a decrease in mark-to-market gains on open energy contracts, in part due to a reduction in trading activity.

Other electric operating revenues increased $5.7 million as a result of: (1) a $3.5 million increase in transmission tariff revenues as a result of increased use of company-owned transmission assets by others, (2) $1.1 million payment received by OTESCO in the first quarter of 2011 for the sale of access rights through an OTESCO wind farm development site, and (3) a $1.1 million refund in 2010 of revenues collected from OTP’s Big Stone II project partners in years prior to 2010.

The $4.1 million decrease in fuel costs reflects a 10.7% decrease in kwhs generated from OTP’s steam-powered and combustion turbine generators, partially offset by a 5.7% increase in the cost of fuel per kwh generated. The decrease in kwh generation was due to a scheduled major maintenance shutdown of Big Stone Plant in fall 2011. The cost of purchased power for retail sales decreased $1.3 million as a result of a 13.7% decrease in the cost per kwh purchased, despite a 12.4% increase in kwhs purchased for system use.

Electric operating and maintenance expenses increased $3.7 million due to the following:

●

a $1.7 million increase in transmission tariff charges related to the increase in kwhs purchased from other generators to serve retail customers,

●

a $1.0 million increase in labor costs related to increased health benefit costs,

●

a $1.0 million increase in generation plant maintenance costs related to the Big Stone Plant overhaul in fall 2011 and increased maintenance costs at the Langdon wind farm and Coyote Station,

●

a $0.9 million increase in expense related to the amortization of the North Dakota portion of Big Stone II plant abandonment costs, which OTP began recovering in August 2010,

●

a $0.8 million increase in Minnesota Conservation Improvement Program (MNCIP) costs related to mandated increases in conservation expenditures in Minnesota, and

●

a $0.7 million increase in transportation costs related to increases in gasoline and diesel fuel prices.

These increases in expenses were partially offset by an increase of $2.4 million in administrative and general expenses charged to capital projects in 2011, which decreases expenses charged to operations.

OTESCO recorded a $0.5 million asset impairment charge in the fourth quarter of 2011 related to its wind farm development rights at its Sheridan Ridge and Stutsman County sites in North Dakota, based on market indicators of the value of those assets.

Property taxes increased $0.8 million due to valuation increases and increases in local property tax rates on Minnesota property.

MANUFACTURING

The following table summarizes the results of operations for our Manufacturing segment for the years ended December 31:

(in thousands)	2012		% change		2011		% change		2010
Operating Revenues	$	208,965		10	$	189,459		32	$	143,072
Cost of Goods Sold		157,437		9		144,987		37		106,114
Other Operating Expenses		18,233		10		16,524		15		14,343
Depreciation and Amortization		12,208		1		12,116		6		11,430
Operating Income	$	21,087		33	$	15,832		42	$	11,185

2012 compared with 2011

The increase in revenues in our Manufacturing segment in 2012 compared with 2011 relates to the following:

●

Revenues at BTD Manufacturing, Inc. (BTD), our metal parts stamping and fabrication company, increased $17.7 million (11.8%) as a result of higher sales volume due to improved customer demand for products and services.

●

Revenues at T.O. Plastics, Inc. (T.O. Plastics) our manufacturer of thermoformed plastic and horticultural products, increased by $1.8 million (4.6%) mainly as a result of increased sales of industrial and medical products.

The increase in cost of goods sold in our Manufacturing segment in 2012 compared with 2011 consists of the following:

●

Cost of goods sold at BTD increased $12.4 million mainly as a result of increased sales volume.

●

Cost of goods sold at T.O. Plastics increased $0.1 million. An increase in costs related to the increase in sales of industrial and medical products was mostly offset by productivity improvements from the use of different blends of plastics and improved operating efficiencies along with more selective bidding practices.

The increase in other operating expenses in our Manufacturing segment in 2012 compared with 2011 relates to the following:

●

Operating expenses at BTD increased $1.7 million mainly due to increased benefit expenses related to employee incentives, but also due to increased salary and benefit expenses related to workforce expansion and increases in expenditures for contracted services.

●

Operating expenses at T.O. Plastics were unchanged between the years.

2011 compared with 2010

The increase in revenues in our Manufacturing segment in 2011 compared with 2010 relates to the following:

●

Revenues at BTD increased $44.7 million (42.1%) as a result of higher sales volume due to improved customer demand for products and services.

●

Revenues at T.O. Plastics increased by $1.7 million (4.6%) mainly as a result of increased sales of horticultural products.

The increase in cost of goods sold in our Manufacturing segment in 2011 compared with 2010 consists of the following:

●

Cost of goods sold at BTD increased $37.3 million mainly as a result of increased sales volume.

●

Cost of goods sold at T.O. Plastics increased $1.6 million as a result of the increase in sales of horticultural products combined with higher material costs related to price increase for resin.

The increase in other operating expenses in our Manufacturing segment in 2011 compared with 2010 relates to the following:

●

Operating expenses at BTD increased $2.0 million mainly due to increased salary and benefit costs related to workforce expansion to support the increase in revenues between the years.

●

Operating expenses at T.O. Plastics increased $0.2 million due to increased salary and benefit costs and insurance costs offset by a reduction in advertising expenses.

CONSTRUCTION

The following table summarizes the results of operations for our Construction segment for the years ended December 31:

(in thousands)	2012			% change			2011			% change			2010
Operating Revenues	$	149,092			(19	)	$	184,657			38		$	134,222
Cost of Goods Sold		147,107			(15	)		173,654			44			120,470
Operating Expenses		12,353			4			11,886			(3	)		12,235
Depreciation and Amortization		1,906			(5	)		2,009			(1	)		2,023
Operating Loss	$	(12,274	)		(324	)	$	(2,892	)		(472	)	$	(506	)

2012 compared with 2011

The decrease in revenues in our Construction segment in 2012 compared with 2011 relates to the following:

●

Revenues at Foley decreased $48.3 million (34.0%) due to a decrease in work volume and the effect of cost overruns on estimated revenues recognized under percentage-of-completion accounting, where revenues are recognized during the project based on the ratio of actual costs incurred to total estimated costs to complete the job. Under percentage-of-completion accounting, increases in costs on certain projects of $14.9 million in 2012 and $7.0 million in 2011 in excess of initial estimates resulted in declining levels of revenue recognized relative to costs incurred and an erosion of margins on those projects.

●

Revenues at Aevenia increased $12.7 million (29.6%) mainly due to an increase in electrical transmission, distribution and substation work in the oil patch region of western North Dakota.

The decrease in cost of goods sold in our Construction segment in 2012 compared with 2011 relates to the following:

●

Cost of goods sold at Foley decreased $35.8 million. The decrease reflects reductions in material and subcontractor costs due to a decrease in work volume between periods.

●

Cost of goods sold at Aevenia increased $9.2 million as a result of the increase in electrical transmission, distribution and substation work, which drove increases in labor, material, subcontractors and rent costs.

The increase in other operating expenses in our Construction segment in 2012 compared with 2011 relates to the following:

●

Operating expenses at Foley increased $0.3 million as a result of increased expenditures for outside services.

●

Operating expenses at Aevenia increased $0.1 million as a result of increased expenditures for outside services.

2011 compared with 2010

The increase in revenues in our Construction segment in 2011 compared with 2010 relates to the following:

●

Revenues at Foley increased $48.7 million (52.3%) due to an increase in construction activity.

●

Revenues at Aevenia increased $1.7 million (4.1%) mainly due to increased revenue from electrical and data wiring work.

The increase in cost of goods sold in our Construction segment in 2011 compared with 2010 relates to the following:

●

Cost of goods sold at Foley increased $51.9 million, mainly in the areas of material and subcontractor costs related to the increase in Foley’s work volume between the periods.

●

Cost of goods sold at Aevenia increased $1.3 million between the periods, primarily in labor costs, as a result of increased electrical and data wiring work and the reporting of indirect labor costs in cost of goods sold in 2011 as compared to other operating expenses in 2010.

The decrease in other operating expenses in our Construction segment in 2011 compared with 2010 relates to the following:

●

Operating expenses at Foley increased $1.0 million between the periods mainly for salaries and benefits in order to support the increase in project growth.

●

Operating expenses at Aevenia decreased $1.4 million as a result of indirect labor costs being recorded in costs of goods sold in 2011 instead of operating expense, an increase in gains on sales of assets and a decrease in outside legal services.

PLASTICS

The following table summarizes the results of operations for our Plastics segment for the years ended December 31:

(in thousands)	2012		% change			2011		% change			2010
Operating Revenues	$	150,517		22		$	123,669		28		$	96,945
Cost of Goods Sold		112,662		9			103,131		24			82,866
Operating Expenses		8,784		41			6,210		20			5,174
Depreciation and Amortization		3,118		(8	)		3,377		(2	)		3,430
Operating Income	$	25,953		137		$	10,951		100		$	5,475

2012 compared with 2011

The $26.8 million increase in Plastics operating revenues in 2012 compared with 2011 was due to a 17.0% increase in pounds of PVC pipe sold combined with a 4.1% increase in the price per pound of PVC pipe sold. The $9.5 million increase in cost of goods sold was related to the increase in pounds of PVC pipe sold offset by a 6.6% reduction in the cost per pound of pipe sold. The decrease in the cost per pound of pipe sold was due to lower prices of resin between the years and increased productivity as fixed production costs were spread over a larger volume of pipe produced over longer production runs with less downtime. The $2.6 million increase in operating expenses is mainly due to increased employee incentives related to improved operating results, but also reflects increases in commissions related to the increase in sales volume.

2011 compared with 2010

The $26.7 million increase in Plastics operating revenues in 2011 compared with 2010 was due to a 10.7% increase in pounds of PVC pipe sold combined with a 15.2% increase in the price per pound of PVC pipe sold driven by an increase in resin prices. The $20.3 million increase in cost of goods sold was related to the increase in pounds of PVC pipe sold combined with a 12.4% increase in the cost per pound of pipe sold, which was also driven by the increase in PVC resin prices. The increase in operating expenses is due to increased labor costs and in commissions paid to independent sales representatives.

CORPORATE

Corporate includes items such as corporate staff and overhead costs, the results of our captive insurance company and other items excluded from the measurement of operating segment performance. Corporate is not an operating segment. Rather it is added to operating segment totals to reconcile to totals on our consolidated statements of income.

(in thousands)	2012		% change			2011		% change			2010
Operating Expenses	$	13,283		(11	)	$	14,897		(5	)	$	15,741
Depreciation and Amortization		481		(13	)		550		5			523

Corporate operating expenses were lower in 2012 than in 2011 as a result of termination benefits incurred in the third quarter of 2011 associated with the resignation of the corporation’s former chief executive officer and reductions in health benefit costs. Corporate operating expenses were lower in 2011 than in 2010 as a result of severance costs related to personnel changes incurred in 2010.

CONSOLIDATED OTHER INCOME

Other income increased $1.3 million in 2012 compared with 2011 due to an increase in investment income and gains on investments of $1.0 million, and a $0.3 million increase in Allowance for Funds Used during Construction (AFUDC).

Other income increased $1.0 million in 2011 compared with 2010, mainly due to a $0.9 million increase in AFUDC.

LOSS ON EARLY RETIREMENT OF DEBT

On July 13, 2012 we prepaid in full the Cascade Note. The price to prepay the Cascade Note was $63,031,000, which included the principal amount of the Cascade Note plus accrued interest of $531,000 and a negotiated prepayment premium of $12,500,000. On repayment, $606,000 in unamortized debt expense related to this note was immediately recognized as expense along with the $12,500,000 negotiated prepayment premium. The $13,106,000 ($7,864,000 net-of-tax) loss on early retirement of debt had a negative impact on 2012 diluted earnings per share of $0.22.

CONSOLIDATED INTEREST CHARGES

Interest charges decreased $3.7 million in 2012 compared with 2011 due to a $2.0 million reduction in interest expense related to the retirement of the Cascade Note on July, 13, 2012, a $1.2 million reduction in short-term debt interest related to a $38.8 million reduction in the daily average balance of short-term debt outstanding between the years, and a $0.6 reduction in the amortization of debt issuance expense and reacquisition losses on OTP debt.

Interest charges decreased $1.2 million in 2011 compared with 2010 due to a $0.6 reduction in the amortization of debt issuance expense and reacquisition losses and a $0.6 million increase in capitalized interest charges related to an increase in construction work in progress between the years.

CONSOLIDATED INCOME TAXES

Income tax expense - continuing operations was $2.1 million in 2012 compared with $4.1 million in 2011 and $3.2 million in 2010. The following table provides a reconciliation of income tax expense – continuing operations calculated at the federal statutory rate on income from continuing operations before income taxes reported on our consolidated statements of income for the years ended December 31, 2012, 2011 and 2010:

	For the Year Ended December 31,
(in thousands)	2012			2011			2010
Tax Computed at Federal Statutory Rate	$	14,385		$	13,661		$	10,329
Increases (Decreases) in Tax from:
Federal Production Tax Credit		(6,695	)		(7,281	)		(6,441	)
North Dakota Wind Tax Credit Amortization – Net of Federal Taxes		(891	)		(996	)		(1,163	)
State Income Taxes Net of Federal Income Tax Benefit		(849	)		798			(1,186	)
Investment Tax Credit Amortization		(720	)		(855	)		(926	)
Dividend Received/Paid Deduction		(656	)		(677	)		(692	)
Corporate Owned Life Insurance		(585	)		(388	)		(556	)
Impact of Medicare Part D Change		(584	)		(599	)		1,692
Allowance for Funds Used During Construction - Equity		(409	)		(301	)		(1	)
Tax Depreciation - Treasury Grant for Wind Farms		(304	)		(507	)		(845	)
Differences Reversing in Excess of Federal Rates		(143	)		680			989
Permanent and Other Differences		(416	)		586			2,031
Total Income Tax Expense – Continuing Operations	$	2,133		$	4,121		$	3,231
Effective Income Tax Rate – Continuing Operations		5.2	%		10.6	%		10.9	%

Federal PTCs are recognized as wind energy is generated based on a per kwh rate prescribed in applicable federal statutes. North Dakota wind energy credits are based on dollars invested in qualifying facilities and are being recognized on a straight-line basis over 25 years.

DISCONTINUED OPERATIONS

On February 8, 2013 we closed on the sale of substantially all of the assets of ShoreMaster for approximately $13.0 million in cash, plus a future working capital true up to be finalized and paid no later than 180 days after closing. We recorded a $4.6 million net-of-tax impairment of ShoreMaster’s assets in December 2012 based on the market value of ShoreMaster’s assets. On November 30, 2012 we completed the sale of the fixed assets of DMI for total proceeds, net of commissions and selling costs, of $18.1 million. On February 29, 2012 we completed the sale of DMS, for $24.0 million net of commissions and selling cost. On January 18, 2012, we sold the assets of Aviva for $0.3 million in cash. For discontinued operations reporting, Aviva’s results are included in ShoreMaster’s consolidated results.

On December 29, 2011 we completed the sale of Wylie for approximately $25.0 million in cash. On May 6, 2011 we completed the sale of IPH for approximately $86.0 million in cash.

The financial position, results of operations, and cash flows of DMI, Wylie, ShoreMaster, DMS and IPH are reported as discontinued operations in our consolidated financial statements. Following are summary presentations of the results of discontinued operations for the years ended December 31, 2012, 2011 and 2010:

	For the Year Ended December 31, 2012
(in thousands)	DMI			Wylie			ShoreMaster			DMS			IPH			Intercompany transactions adjustment			Total
Operating Revenues	$	186,151		$	--		$	32,563		$	16,362		$	--		$	(2,017	)	$	233,059
Operating Expenses		184,462			179			36,163			14,741			--			(2,017	)		233,528
Asset Impairment Charge		45,573			--			7,747			--			--			--			53,320
Other Income		135			--			15			122			--			--			272
Interest Expense		5,787			--			1,553			279			--			(7,444	)		175
Income Tax (Benefit) Expense		(15,792	)		13			(4,021	)		1,734			106			2,978			(14,982	)
Net Loss from Operations		(33,744	)		(192	)		(8,864	)		(270	)		(106	)		4,466			(38,710	)
Loss on Disposition Before Taxes		--			(62	)		--			(5,154	)		--			--			(5,216	)
Income Tax Expense (Benefit) on Disposition		--			460			--			(145	)		--			--			315
Net Loss on Disposition		--			(522	)		--			(5,009	)		--			--			(5,531	)
Net Loss	$	(33,744	)	$	(714	)	$	(8,864	)	$	(5,279	)	$	(106	)	$	4,466		$	(44,241	)

	For the Year Ended December 31, 2011
(in thousands)	DMI			Wylie			ShoreMaster			DMS			IPH			Intercompany transactions adjustment			Total
Operating Revenues	$	201,921		$	49,884		$	39,863		$	89,558		$	28,125		$	(6,016	)	$	403,335
Operating Expenses		218,542			55,927			41,478			85,244			24,046			(6,016	)		419,221
Asset Impairment Charge		3,142			--			456			56,379			--			--			59,977
Other (Deductions) Income		(46	)		18			1			281			(228	)		(3	)		23
Interest Expense		6,852			709			1,580			1,726			11			(10,636	)		242
Income Tax (Benefit) Expense		(4,768	)		(2,683	)		(1,462	)		(16,058	)		1,462			4,254			(19,255	)
Net (Loss) Income from Operations		(21,893	)		(4,051	)		(2,188	)		(37,452	)		2,378			6,379			(56,827	)
(Loss) Gain on Disposition Before Taxes		--			(946	)		--			--			15,471			--			14,525
Income Tax Expense on Disposition		--			2,854			--			--			2,997			--			5,851
Net (Loss) Gain on Disposition		--			(3,800	)		--			--			12,474			--			8,674
Net (Loss) Income	$	(21,893	)	$	(7,851	)	$	(2,188	)	$	(37,452	)	$	14,852		$	6,379		$	(48,153	)

	For the Year Ended December 31, 2010
(in thousands)	DMI			Wylie		ShoreMaster			DMS		IPH			Intercompany transactions adjustment			Total
Operating Revenues	$	143,603		$	54,143	$	35,624		$	100,301	$	77,412		$	(5,830	)	$	405,253
Operating Expenses		159,646			52,311		41,351			98,794		65,261			(5,830	)		411,533
Asset Impairment Charge		--			--		19,740			--		--			--			19,740
Other (Deductions) Income		(734	)		8		21			331		(326	)		--			(700	)
Interest Expense		5,614			522		1,492			1,289		111			(8,844	)		184
Income Tax (Benefit) Expense		(356	)		511		(7,058	)		369		3,716			3,538			720
Net (Loss) Income	$	(22,035	)	$	807	$	(19,880	)	$	180	$	7,998		$	5,306		$	(27,624	)

IMPACT OF INFLATION

OTP operates under regulatory provisions that allow price changes in fuel and certain purchased power costs to be passed to most retail customers through automatic adjustments to its rate schedules under fuel clause adjustments. Other increases in the cost of electric service must be recovered through timely filings for electric rate increases with the appropriate regulatory agency.

Our Manufacturing, Construction and Plastics segments consist entirely of businesses whose revenues are not subject to regulation by ratemaking authorities. Increased operating costs are reflected in product or services pricing with any limitations on price increases determined by the marketplace. Raw material costs, labor costs, fuel and energy costs and interest rates are important components of costs for companies in these segments. Any or all of these components could be impacted by inflation or other pricing pressures, with a possible adverse effect on our profitability, especially where increases in these costs exceed price increases on finished products. In recent years, our operating companies have faced strong inflationary and other pricing pressures with respect to steel, fuel, resin, aluminum and health care costs, which have been partially mitigated by pricing adjustments.

LIQUIDITY

The following table presents the status of our lines of credit as of December 31, 2012 and December 31, 2011:

(in thousands)	Line Limit		In Use on December 31, 2012		Restricted due to Outstanding Letters of Credit		Available on December 31, 2012		Available on December 31, 2011
Otter Tail Corporation Credit Agreement	$	150,000	$	--	$	733	$	149,267	$	198,776
OTP Credit Agreement		170,000		--		3,189		166,811		165,950
Total	$	320,000	$	--	$	3,922	$	316,078	$	364,726

We believe we have the necessary liquidity to effectively conduct business operations for an extended period if needed. Our balance sheet is strong and we are in compliance with our debt covenants. Financial flexibility is provided by operating cash flows, unused lines of credit, strong financial coverages, investment grade credit ratings and alternative financing arrangements such as leasing.

We believe our financial condition is strong and our cash, other liquid assets, operating cash flows, existing lines of credit, access to capital markets and borrowing ability because of investment-grade credit ratings, when taken together, provide adequate resources to fund ongoing operating requirements and future capital expenditures related to expansion of existing businesses and development of new projects. On May 11, 2012 we filed a shelf registration statement with the Securities and Exchange Commission (SEC) under which we may offer for sale, from time to time, either separately or together in any combination, equity, debt or other securities described in the shelf registration statement. On May 14, 2012, we entered into a Distribution Agreement (the Agreement) with J.P. Morgan Securities (JPMS) under which we may offer and sell our common shares from time to time through JPMS, as our distribution agent, up to an aggregate sales price of $75 million. Equity or debt financing will be required in the period 2013 through 2017 given the expansion plans related to our Electric segment to fund construction of new rate base investments, in the event we decide to reduce borrowings under our lines of credit or refund or retire early any of our presently outstanding debt, to complete acquisitions or for other corporate purposes. Also, our operating cash flow and access to capital markets can be impacted by macroeconomic factors outside our control. In addition, our borrowing costs can be impacted by changing interest rates on short-term and long-term debt and ratings assigned to us by independent rating agencies, which in part are based on certain credit measures such as interest coverage and leverage ratios.

Our common stock dividend payments have exceeded our net (losses) income in each of the last five years. The determination of the amount of future cash dividends to be declared and paid will depend on, among other things, our financial condition, improvement in earnings per share to levels in excess of the indicated annual dividend per share of $1.19, cash flows from operations, the level of our capital expenditures and our future business prospects. As a result of certain statutory limitations or regulatory or financing agreements, restrictions could occur on the amount of distributions allowed to be made by the Company’s subsidiaries. See note 8 to consolidated financial statement for more information. The decision to declare a quarterly dividend is reviewed quarterly by the Board of Directors.

Cash provided by operating activities from continuing operations was $169.0 million in 2012 compared with $93.7 million in 2011. A major contributor to the $75.3 million increase in cash from operations was a change from cash used for working capital of $26.3 million in 2011 to $24.7 million in cash provided from a reduction in working capital in continuing operations. Deferred debits and other assets increased $25.1 million in 2011 compared to an increase of $4.8 million in 2012, mainly due to a smaller increase in regulatory assets in 2012 compared with 2011. Net cash provided by discontinued operations of $64.6 million in 2012 is mainly from the monetization of DMI’s working capital in 2012 after DMI’s operations were discontinued. The proceeds generated by the monetization of DMI’s working capital were used to pay down our line of credit after the line was used to repurchase the Cascade Note and to pay a $12.5 million repurchase premium to retire the Cascade Note prior to its maturity date.

Net cash used in investing activities of continuing operations was $111.9 million in 2012 compared to $65.5 million in 2011. The $46.4 million increase in cash used for investing activities reflects a $48.4 million increase in cash used for capital expenditures, mainly due to a $51.8 million increase in capital expenditures at OTP. The increase in cash used for capital expenditures at OTP is mainly related to expenditures for CapX2020 transmission line projects and initial expenditures for Big Stone Plant’s new air quality control system scheduled for completion in 2015. Net investing cash flows from discontinued operations were $28.3 million in 2012 compared with $70.9 million in 2011. Net proceeds from the sales of DMS, DMI and Aviva were $42.2 million in 2012, compared to net proceeds of $107.3 million from the sales of IPH and Wylie in 2011.

Net cash used in financing activities of continuing operations of $108.1 million in 2012 included $62.5 million used for the early retirement of the Cascade Note, and $44.0 million for the payment of dividends on our outstanding common and preferred shares. This compares to $92.3 million in cash used in the financing activities of our continuing operations in 2011, when we paid out $43.9 million in dividends. Also in 2011, OTP issued $140 million in long-term debt and used a portion of the proceeds to retire its $90 million Senior Notes due December 1, 2011, and to retire early its $10.4 million in pollution control refunding revenue bonds due December 1, 2012. A portion of the proceeds were also used to pay down OTP’s line of credit borrowings which were at $10.0 million when the debt was issued. We repaid $86.8 million in short-term borrowings and checks issued in excess of cash in 2011. In 2011, net proceeds of $84.3 million from the sale of IPH were used to pay down short-term debt.

CAPITAL REQUIREMENTS

We have a capital expenditure program for expanding, upgrading and improving our plants and operating equipment. Typical uses of cash for capital expenditures are investments in electric generation facilities and environmental upgrades, transmission and distribution lines, manufacturing facilities and upgrades, equipment used in the manufacturing process, and computer hardware and information systems. The capital expenditure program is subject to review and is revised in light of changes in demands for energy, technology, environmental laws, regulatory changes, business expansion opportunities, the costs of labor, materials and equipment and our consolidated financial condition.

Cash used for consolidated capital expenditures was $116 million in 2012, $67 million in 2011 and $58 million in 2010. Estimated capital expenditures for 2013 are $204 million. Total capital expenditures for the five-year period 2013 through 2017 are estimated to be approximately $906 million, which includes $247 million for OTP’s share of a new air quality control system at Big Stone Plant and $347 million for transmission projects including $253 million for MVPs and $45 million for CapX2020 transmission projects, excluding $20 million for the Brookings to Southeast Twin Cities CapX2020 MVP project, included in the $253 million above.

The breakdown of 2010, 2011 and 2012 actual cash used for capital expenditures and 2013 through 2017 estimated capital expenditures by segment is as follows:

(in millions)	2010		2011		2012		2013		2014		2015		2016		2017		Total for 2013-2017
Electric	$	43	$	50	$	102	$	182	$	185	$	170	$	113	$	161	$	811
Manufacturing		6		10		9		17		14		15		12		16		74
Construction		5		3		2		3		3		2		1		2		11
Plastics		3		2		3		2		2		2		2		2		10
Corporate		1		2		--		--		--		--		--		--		--
Total	$	58	$	67	$	116	$	204	$	204	$	189	$	128	$	181	$	906

The following table summarizes our contractual obligations at December 31, 2012 and the effect these obligations are expected to have on our liquidity and cash flow in future periods.

(in millions)	Total		Less than 1 Year		1-3 Years		3-5 Years		More than 5 Years
Coal Contracts (required minimums)	$	797	$	43	$	37	$	43	$	674
Long-Term Debt Obligations		422		--		1		138		283
Interest on Long-Term Debt Obligations		250		26		53		43		128
Capacity and Energy Requirements		170		31		30		32		77
Postretirement Benefit Obligations		91		4		9		10		68
Other Purchase Obligations		79		45		12		22		--
Operating Lease Obligations		42		8		13		8		13
Total Contractual Cash Obligations	$	1,851	$	157	$	155	$	296	$	1,243

Postretirement Benefit Obligations include estimated cash expenditures for the payment of retiree medical and life insurance benefits and supplemental pension benefits under our unfunded Executive Survivor and Supplemental Retirement Plan, but do not include amounts to fund our noncontributory funded pension plan as we are not currently required to make a contribution to that plan.

In January 2013 our Board of Directors authorized the redemption in full of all four series of our cumulative preferred shares, which were called on January 24, 2013 for redemption on March 1, 2013. Also, on January 24, 2013, OTP caused call notices to be issued for the optional redemption in full on March 1, 2013, all of the outstanding 4.65% Grant County, South Dakota Pollution Control Refunding Revenue Bonds (of which an aggregate of $5.1 million was outstanding on such date) and all of the outstanding 4.85% Mercer County, North Dakota Pollution Control Refunding Revenue Bonds (of which an aggregate of $20.1 million was outstanding on such date), in each case for which OTP pays debt service. Additionally, on March 1, 2013 OTP will pay off $15.5 million in intercompany debt owed to us that represents our $15.5 million in cumulative preferred shares outstanding. All of the foregoing redemptions will be funded from a $40.9 million term loan OTP will be entering into. The lower, LIBOR based, floating rate interest under the term loan is expected to contribute to a reduction in pre-tax interest expense in 2013 compared with 2012.

CAPITAL RESOURCES

Financial flexibility is provided by operating cash flows, unused lines of credit, strong financial coverages, investment grade credit ratings, and alternative financing arrangements such as leasing. Equity or debt financing will be required in the period 2014 through 2018 given the expansion plans related to our Electric segment to fund construction of new rate base investments, in the event we decide to reduce borrowings under our lines of credit, to refund or retire early any of our presently outstanding debt, to complete acquisitions or for other corporate purposes. There can be no assurance that any additional required financing will be available through bank borrowings, debt or equity financing or otherwise, or that if such financing is available, it will be available on terms acceptable to us. If adequate funds are not available on acceptable terms, our businesses, results of operations and financial condition could be adversely affected.

On May 11, 2012 we filed a shelf registration statement with the SEC under which we may offer for sale, from time to time, either separately or together in any combination, equity, debt or other securities described in the shelf registration statement.

On May 14, 2012, we entered into the Agreement with JPMS. Pursuant to the terms of the Agreement, we may offer and sell our common shares from time to time through JPMS, as our distribution agent for the offer and sale of the shares, up to an aggregate sales price of $75 million. Under the Agreement, we will designate the minimum price and maximum number of shares to be sold through JPMS on any given trading day or over a specified period of trading days, and JPMS will use commercially reasonable efforts to sell such shares on such days, subject to certain conditions. We are not obligated to sell and JPMS is not obligated to buy or sell any of the shares under the Agreement. The shares, if issued, will be issued pursuant to our shelf registration statement, as amended. No shares have been sold pursuant to the Agreement.

Short-Term Debt

The following table presents the status of our lines of credit as of December 31, 2012 and December 31, 2011:

(in thousands)	Line Limit		In Use on December 31, 2012		Restricted due to Outstanding Letters of Credit		Available on December 31, 2012		Available on December 31, 2011
Otter Tail Corporation Credit Agreement	$	150,000	$	--	$	733	$	149,267	$	198,776
OTP Credit Agreement		170,000		--		3,189		166,811		165,950
Total	$	320,000	$	--	$	3,922	$	316,078	$	364,726

Under the Otter Tail Corporation Credit Agreement (as defined below), the maximum amount of debt outstanding in 2012 was $66,236,000 on July 13, 2012 and the average daily balance of debt outstanding during 2012 was $12,078,000. The weighted average interest rate paid on debt outstanding under the Otter Tail Corporation Credit Agreement during 2012 was 3.8% compared with 3.7% in 2011. Under the OTP Credit Agreement, the maximum amount of debt outstanding in 2012 was $16,582,000 on August 15, 2012 and the average daily balance of debt outstanding during 2012 was $5,867,000. The weighted average interest rate paid on debt outstanding under the OTP Credit Agreement during 2012 was 1.7% compared with 1.5% in 2011.

On October 29, 2012 we entered into a Third Amended and Restated Credit Agreement (the Credit Agreement), which is an unsecured $150 million revolving credit facility that we can draw on to refinance certain indebtedness and support our operations and the operations of our subsidiaries. The Credit Agreement amends and restates our Second Amended and Restated Credit Agreement dated as of May 4, 2010, which was set to expire on May 4, 2013, and provided for a $200 million line of credit. Borrowings under the Credit Agreement bear interest at LIBOR plus 1.75%, subject to adjustment based on our senior unsecured credit ratings. The Credit Agreement expires on October 29, 2017. Under the Credit Agreement, we are required to pay commitment fees based on the average daily unused amount available to be drawn under the revolving credit facility. The Credit Agreement contains a number of restrictions on us and the businesses of Varistar and its material subsidiaries, including restrictions on our and their ability to merge, sell assets, make investments, create or incur liens on assets, guarantee the obligations of certain other parties and engage in transactions with related parties. The Credit Agreement also contains affirmative covenants and events of default. The Credit Agreement does not include provisions for the termination of the agreement or the acceleration of repayment of amounts outstanding due to changes in our credit ratings. Our obligations under the Credit Agreement are guaranteed by certain of our material subsidiaries. Outstanding letters of credit issued by us under the Credit Agreement can reduce the amount available for borrowing under the line by up to $40 million. The Credit Agreement has an accordion feature whereby the line can be increased to $250 million on the terms and subject to the conditions described in the Credit Agreement.

On October 29, 2012 OTP entered into a Second Amended and Restated Credit Agreement (the OTP Credit Agreement) that provides for a $170 million line of credit with an accordion feature whereby the line can be increased to $250 million on the terms and subject to the conditions described in the OTP Credit Agreement. The OTP Credit Agreement amends and restates the $170 million OTP Credit Agreement dated as of March 3, 2011, which was set to expire on March 3, 2016. The OTP Credit Agreement is an unsecured revolving credit facility that OTP can draw on to support the working capital needs and other capital requirements of its operations, including letters of credit in an aggregate amount not to exceed $50 million outstanding at any time. Borrowings under this line of credit bear interest at LIBOR plus 1.25%, subject to adjustment based on the ratings of OTP’s senior unsecured debt. The OTP Credit Agreement is set to expire on October 29, 2017. OTP is required to pay the Banks’ commitment fees based on the average daily unused amount available to be drawn under the revolving credit facility. The OTP Credit Agreement contains a number of restrictions on the business of OTP, including restrictions on its ability to merge, sell assets, make investments, create or incur liens on assets, guarantee the obligations of any other party, and engage in transactions with related parties. The OTP Credit Agreement also contains affirmative covenants and events of default. The OTP Credit Agreement does not include provisions for the termination of the agreement or the acceleration of repayment of amounts outstanding due to changes in OTP’s credit ratings. OTP’s obligations under the OTP Credit Agreement are not guaranteed by any other party.

Long-Term Debt

On December 4, 2009 we issued $100 million of our 9.000% notes due 2016 under the indenture (for unsecured debt securities) dated as of November 1, 1997, as amended by the First Supplemental Indenture dated as of July 1, 2009, between us and U.S. Bank National Association (formerly First Trust National Association), as trustee. The notes are senior unsecured indebtedness and bear interest at 9.000% per year, payable semi-annually in arrears on June 15 and December 15 of each year. The entire principal amount of the notes, unless previously redeemed or otherwise repaid, will mature and become due and payable on December 15, 2016.

On March 18, 2011 we borrowed $1.5 million under a Partnership in Assisting Community Expansion loan to finance capital investments at Northern Pipe Products, Inc. (Northern Pipe), the Company’s PVC pipe manufacturing subsidiary located in Fargo, North Dakota. The ten-year unsecured note bears interest at 2.54% with monthly principal and interest payments through March 2021. On April 6, 2011 we borrowed $0.5 million under a North Dakota Development Fund loan to finance additional capital investments at Northern Pipe. The seven-year unsecured note bears interest at 3.95% with monthly principal and interest payments through April 1, 2018.

On December 1, 2011 OTP issued $140 million aggregate principal amount of its 4.63% Senior Unsecured Notes due December 1, 2021 (the 2021 Notes) pursuant to a Note Purchase Agreement dated July 29, 2011 (2011 Note Purchase Agreement) between OTP and the purchasers named therein. OTP used a portion of the proceeds of the 2021 Notes to retire $90 million aggregate principal amount of OTP’s 6.63% Senior Notes due December 1, 2011 and $10.4 million aggregate principal amount of its pollution control refunding revenue bonds due December 1, 2012. The remaining proceeds of the 2021 Notes were used to repay short-term debt of OTP which was issued to fund capital expenditures, to pay fees and expenses related to the debt issuance and to fund a $10 million contribution to the Company’s pension plan in January 2012.

On July 13, 2012, we prepaid in full the Cascade Note issued pursuant to the Note Purchase Agreement dated as of February 23, 2007, as amended, between us and Cascade Investment L.L.C. (Cascade). Immediately before the prepayment, the Cascade Note bore interest at 8.89% annually. The price paid by us to prepay the Cascade Note was $63,031,000, which included the principal amount of the Cascade Note plus accrued interest of $531,000 and a negotiated prepayment premium of $12,500,000. We used the funds available under the Credit Agreement for the prepayment. This early retirement reflects our desire to lower our long-term debt outstanding given our recent divestitures. This retirement of debt strengthens our consolidated capital structure and will positively affect future years’ earnings by lowering interest costs. Cascade owned approximately 9.6% of our outstanding common stock as of December 31, 2012.

The note purchase agreement relating to OTP’s $155 million senior unsecured notes issued in four series consisting of $33 million aggregate principal amount of 5.95% Senior Unsecured Notes, Series A, due 2017; $30 million aggregate principal amount of 6.15% Senior Unsecured Notes, Series B, due 2022; $42 million aggregate principal amount of 6.37% Senior Unsecured Notes, Series C, due 2027; and $50 million aggregate principal amount of 6.47% Senior Unsecured Notes, Series D, due 2037, as amended (the 2007 Note Purchase Agreement) and the 2011 Note Purchase Agreement each states that OTP may prepay all or any part of the notes issued thereunder (in an amount not less than 10% of the aggregate principal amount of the notes then outstanding in the case of a partial prepayment) at 100% of the principal amount prepaid, together with accrued interest and a make-whole amount. The 2011 Note Purchase Agreement states in the event of a transfer of utility assets put event, the noteholders thereunder have the right to require OTP to repurchase the notes held by them in full, together with accrued interest and a make-whole amount, on the terms and conditions specified in the 2011 Note Purchase Agreement.

The 2007 Note Purchase Agreement and the 2011 Note Purchase Agreement each also states that OTP must offer to prepay all of the outstanding notes issued thereunder at 100% of the principal amount together with unpaid accrued interest in the event of a change of control of OTP, and each contains a number of restrictions on OTP. These include restrictions on OTP’s ability to merge, sell assets, create or incur liens on assets, guarantee the obligations of any other party, and engage in transactions with related parties.

Financial Covenants

As of December 31, 2012 the Company was in compliance with the financial statement covenants that existed in its debt agreements.

No Credit or Note Purchase Agreement contains any provisions that would trigger an acceleration of the related debt as a result of changes in the credit rating levels assigned to the related obligor by rating agencies.

Our borrowing agreements are subject to certain financial covenants. Specifically:

●

Under the Credit Agreement, we may not permit the ratio of our Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00 or permit our Interest and Dividend Coverage Ratio to be less than 1.50 to 1.00 (each measured on a consolidated basis), as provided in the Credit Agreement. As of December 31, 2012 our Interest and Dividend Coverage Ratio calculated under the requirements of the Credit Agreement was 2.81 to 1.00.

●

Under the OTP Credit Agreement, OTP may not permit the ratio of its Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00.

●

Under the 2007 Note Purchase Agreement, 2011 Note Purchase Agreement and the financial guaranty insurance policy with Ambac Assurance Corporation relating to certain pollution control refunding bonds, OTP may not permit the ratio of its Consolidated Debt to Total Capitalization to be greater than 0.60 to 1.00 or permit its Interest and Dividend Coverage Ratio to be less than 1.50 to 1.00, in each case as provided in the related borrowing or insurance agreement. In addition, under the 2007 Note Purchase Agreement and 2011 Note Purchase Agreement, OTP may not permit its Priority Debt to exceed 20% of its Total Capitalization, as provided in the related agreement. As of December 31, 2012 OTP’s Interest and Dividend Coverage Ratio and Interest Charges Coverage Ratio, calculated under the requirements of the 2007 Note Purchase Agreement and 2011 Note Purchase Agreement, was 3.35 to 1.00.

As of December 31, 2012 our interest-bearing debt to total capitalization was 0.44 to 1.00 on a fully consolidated basis and 0.48 to 1.00 for OTP.

Our ratio of earnings to fixed charges from continuing operations, which includes imputed finance costs on operating leases, was 2.6x for 2012 compared to 2.0x for 2011, and our debt interest coverage ratio before taxes was 2.2x for 2012 compared to 2.1x for 2011. During 2013, we expect these coverage ratios to increase, assuming 2013 net income meets our expectations.

OFF-BALANCE-SHEET ARRANGEMENTS

We and our subsidiary companies have outstanding letters of credit totaling $10.6 million, but our line of credit borrowing limits are only restricted by $3.9 million of the outstanding letters of credit. We do not have any other off-balance-sheet arrangements or any relationships with unconsolidated entities or financial partnerships. These entities are often referred to as structured finance special purpose entities or variable interest entities, which are established for the purpose of facilitating off-balance-sheet arrangements or for other contractually narrow or limited purposes. We are not exposed to any financing, liquidity, market or credit risk that could arise if we had such relationships.

2013 BUSINESS OUTLOOK

We anticipate 2013 diluted earnings per share to be in the range of $1.30 to $1.55. This guidance reflects the current mix of businesses owned by us as we start out 2013. It considers the cyclical nature of some of our businesses and reflects challenges presented by current economic conditions, as well as our plans and strategies for improving future operating results. Our current consolidated capital expenditures expectation for 2013 is in the range of $200 million to $210 million. This compares with $116 million of capital expenditures in 2012. The major project contributing to the increase in planned expenditures is the new air quality control system (AQCS) for Big Stone Plant to meet requirements of the federal Clean Air Act and regional haze regulations. We plan to invest in generation and transmission projects for the Electric segment that are expected to positively impact our earnings and returns on capital. In addition to the AQCS project, current Electric segment projects include investment in three MISO-determined MVP transmission projects that will serve the nine-state MISO region, of which one is a CapX2020 project already underway, and investment with other utilities in one other remaining CapX2020 transmission project also under way.

Segment components of our 2013 earnings per share guidance range are as follows:

	2012 EPS by Segment	2013 EPS Guidance
	2012 EPS by Segment	Low	High
Electric	$1.06	$1.06	$1.11
Manufacturing	$0.29	$0.31	$0.36
Construction	($0.21)	$0.06	$0.11
Plastics	$0.39	$0.16	$0.21
Corporate	($0.26)	($0.29)	($0.24)
Subtotal – Continuing Operations	$1.27	$1.30	$1.55
Corporate – Premium Paid on Debt Extinguishment	($0.22)
Total – Continuing Operations	$1.05	$1.30	$1.55

Contributing to our earnings guidance for 2013 are the following items:

●

We expect net income to increase slightly in our Electric segment in 2013 compared with 2012. This is based on rider recovery increases and an increase in AFUDC related to larger construction expenditures, offset by lower conservation improvement program incentives and increases in operating and maintenance expenses due to higher benefit costs. OTP’s pension benefit costs for 2013 for our noncontributory funded pension plan are expected to increase by $2.7 million in 2013, reflecting a change in the assumed rate of return on pension plan assets from 8.0% in 2012 to 7.75% in 2013 and a decrease in the estimated discount rate used to determine annual benefit costs accruals from 5.15% in 2012 to 4.50% in 2013.

●

We expect earnings from our Manufacturing segment to improve in 2013 due to the following factors:

Increased order volume and continuing improvement in economic conditions in the industries BTD serves,

A slight increase in earnings from T.O. Plastics, and

Backlog for the manufacturing companies of approximately $124 million for 2013 compared with $115 million one year ago.

●

We expect higher net income from our Construction segment in 2013 as it has implemented improved cost control processes in construction management and selectively bid on projects with the potential for higher margins. 2012 was negatively impacted by the results on certain large projects at Foley. These projects are now substantially completed and Foley’s internal bidding and estimating project review procedures have been improved such that we do not expect to see similar losses in 2013. Backlog in place for the construction businesses is $151 million for 2013 compared with $106 million one year ago.

●

The Plastics segment experienced its second best earnings year in its history in 2012 due in part to certain market and weather related events that are not expected to recur in 2013. Accordingly, we expect 2013 net earnings for Plastics to be lower based on the market and weather conditions currently being experienced.

●

Corporate general and administrative costs are expected to remain relatively flat between the years.

The sales of DMI and ShoreMaster were strategic decisions by management to monetize assets and divest of companies that do not fit with our current operating plans. The divestitures free up liquidity going forward for upcoming Electric segment capital investments. We will continue to review our portfolio to see where additional opportunities exist to improve our risk profile, improve credit metrics and generate additional sources of cash to support the future capital expenditure plans of our Electric segment. This will result in a larger percentage of our earnings coming from OTP, our most stable and relatively predictable business, and is consistent with the strategy to grow this business given its current investment opportunities.

The following table shows our 2012 capital expenditures and 2013 through 2017 anticipated capital expenditures and electric utility average rate base:

(in millions)	2012		2013		2014		2015		2016		2017
Capital Expenditures:
Electric Segment:
Transmission			$	60	$	45	$	56	$	69	$	118
Environmental				89		99		72		1		--
Other				33		41		42		43		43
Total Electric Segment	$	102	$	182	$	185	$	170	$	113	$	161
Manufacturing and Infrastructure Segments		14		22		19		19		15		20
Total Capital Expenditures	$	116	$	204	$	204	$	189	$	128	$	181
Total Electric Utility Average Rate Base	$	694	$	789	$	919	$	1,061	$	1,134	$	1,197

Execution on the currently anticipated electric utility capital expenditure plan is expected to grow rate base and be a key driver in increasing utility earnings over the 2013 through 2017 timeframe. We intend to maintain our equity to total capitalization ratio near its present level of 52% in the Electric segment and will seek to earn our authorized overall return on equity of approximately 10.5% in the utility’s regulatory jurisdictions.

Our outlook for 2013 is dependent on a variety of factors and is subject to the risks and uncertainties discussed in Item 1A. Risk Factors, and elsewhere in this Annual Report on Form 10-K.

CRITICAL ACCOUNTING POLICIES INVOLVING SIGNIFICANT ESTIMATES

Our significant accounting policies are described in note 1 to our consolidated financial statements. The discussion and analysis of the financial statements and results of operations are based on our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America. The preparation of these consolidated financial statements requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, revenues and expenses, and related disclosure of contingent assets and liabilities.

We use estimates based on the best information available in recording transactions and balances resulting from business operations. Estimates are used for such items as depreciable lives, asset impairment evaluations, tax provisions, collectability of trade accounts receivable, self-insurance programs, unbilled electric revenues, accrued renewable resource and transmission rider revenues, valuations of forward energy contracts, percentage-of-completion, warranty and actuarially determined benefits costs and liabilities. As better information becomes available or actual amounts are known, estimates are revised. Operating results can be affected by revised estimates. Actual results may differ from these estimates under different assumptions or conditions. Management has discussed the application of these critical accounting policies and the development of these estimates with the Audit Committee of the Board of Directors. The following critical accounting policies affect the more significant judgments and estimates used in the preparation of our consolidated financial statements.

PENSION AND OTHER POSTRETIREMENT BENEFITS OBLIGATIONS AND COSTS

Pension and postretirement benefit liabilities and expenses for our electric utility and corporate employees are determined by actuaries using assumptions about the discount rate, expected return on plan assets, rate of compensation increase and healthcare cost-trend rates. Further discussion of our pension and postretirement benefit plans and related assumptions is included in note 12 to our consolidated financial statements.

These benefits, for any individual employee, can be earned and related expenses can be recognized and a liability accrued over periods of up to 40 or more years. These benefits can be paid out for up to 40 or more years after an employee retires. Estimates of liabilities and expenses related to these benefits are among our most critical accounting estimates. Although deferral and amortization of fluctuations in actuarially determined benefit obligations and expenses are provided for when actual results on a year-to-year basis deviate from long-range assumptions, compensation increases and healthcare cost increases or a reduction in the discount rate applied from one year to the next can significantly increase our benefit expenses in the year of the change. Also, a reduction in the expected rate of return on pension plan assets in our funded pension plan or realized rates of return on plan assets that are well below assumed rates of return could result in significant increases in recognized pension benefit expenses in the year of the change or for many years thereafter because actuarial losses can be amortized over the average remaining service lives of active employees.

The pension benefit cost for 2013 for our noncontributory funded pension plan is expected to be $10.5 million compared to $8.6 million in 2012, reflecting a change in the assumed rate of return on pension plan assets from 8.0% in 2012 to 7.75% in 2013, and a decrease in the estimated discount rate used to determine annual benefit cost accruals from 5.15% in 2012 to 4.50% in 2013. In selecting the discount rate, we consider the yields of fixed income debt securities, which have ratings of “Aa” published by recognized rating agencies, along with bond matching models specific to our plans as a basis to determine the rate.

Subsequent increases or decreases in actual rates of return on plan assets over assumed rates or increases or decreases in the discount rate or rate of increase in future compensation levels could significantly change projected costs. For 2012, all other factors being held constant: a 0.25 increase in the discount rate would have decreased our 2012 pension benefit cost by $736,000; a 0.25 decrease in the discount rate would have increased our 2012 pension benefit cost by $772,000; a 0.25 increase in the assumed rate of increase in future compensation levels would have increased our 2012 pension benefit cost by $706,000; a 0.25 decrease in the assumed rate of increase in future compensation levels would have decreased our 2012 pension benefit cost by $501,000; and a 0.25 increase (or decrease) in the expected long-term rate of return on plan assets would have decreased (or increased) our 2012 pension benefit cost by $451,000.

Increases or decreases in the discount rate or in retiree healthcare cost inflation rates could significantly change our projected postretirement healthcare benefit costs. A 0.25 increase in the discount rate would have decreased our 2012 postretirement medical benefit costs by $269,000. A 0.25 decrease in the discount rate would have increased our 2012 postretirement medical benefit costs by $285,000. See note 12 to our consolidated financial statements for the cost impact of a change in medical cost inflation rates.

We believe the estimates made for our pension and other postretirement benefits are reasonable based on the information that is known at the point in time the estimates are made. These estimates and assumptions are subject to a number of variables and are subject to change.

REVENUE RECOGNITION

Our construction companies record operating revenues on a percentage-of-completion basis for fixed-price construction contracts. The method used to determine the progress of completion is based on the ratio of costs incurred to total estimated costs. The duration of the majority of these contracts ranges from less than a year up to three years. Revenues recognized on jobs in progress as of December 31, 2012 were $309 million. Any expected losses on jobs in progress at year-end 2012 have been recognized. We believe the accounting estimate related to the percentage-of-completion accounting on uncompleted contracts is critical to the extent that any underestimate of total expected costs on fixed-price construction contracts could result in reduced profit margins being recognized on these contracts at the time of completion.

We have a standard quarterly Estimate at Completion process in which we review the progress and performance of our contracts accounted for under percentage-of-completion accounting. As part of this process, our reviews include, but are not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities, and the related changes in estimates of revenues and costs. The risks and opportunities include our judgment about the ability and cost to achieve the schedule, technical requirements and other contract requirements. We must make assumptions regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the contract, and performance by subcontractors, among other variables. Based on this analysis, any adjustments to net sales, costs of sales, and the related impact to operating income are recorded as necessary in the period they become known. These adjustments may result from positive program performance and an increase in operating profit during the performance of individual contracts if management determines it will be successful in mitigating risks surrounding the technical, schedule, and cost aspects of those contracts or realizing related opportunities. Likewise, these adjustments may result in a decrease in operating profit if we determine we will not be successful in mitigating these risks or realizing related opportunities. Changes in estimates of net sales, costs of sales, and the related impact to operating income are recognized using a cumulative catch-up, which recognizes, in the current period, the cumulative effect of the changes on current and prior periods based on a contract ’ s percent complete. A significant change in one or more of these estimates could affect the profitability of one or more of our contracts. If a loss is indicated at a point in time during a contract, a projected loss for the entire contract is estimated and recognized.

FORWARD ENERGY CONTRACTS CLASSIFIED AS DERIVATIVES

OTP’s forward contracts for the purchase and sale of electricity are derivatives subject to mark-to-market accounting under generally accepted accounting principles. The market prices used to value OTP’s forward contracts for the purchases and sales of electricity and electricity generating capacity are determined by survey of counterparties or brokers used by OTP’s power services’ personnel responsible for contract pricing, as well as prices gathered from daily settlement prices published by the Intercontinental Exchange and the CME Globex. For certain contracts, prices at illiquid trading points are based on a basis spread between that trading point and more liquid trading hub prices. These basis spreads are determined based on available market price information and the use of forward price curve models, and, as such, are estimates. The forward energy sales contracts that are marked to market as of December 31, 2012, are 100% offset by forward energy purchase contracts in terms of volumes, delivery periods and points of delivery. The differential in forward prices at the different delivery locations currently results in a net mark-to-market unrealized gain on OTP’s open forward contracts.

OTP’s recognized but unrealized net gains of $49,000 on forward purchases and sales of electricity marked to market on December 31, 2012 are expected to be realized on settlement as scheduled over the following periods in the amounts listed:

(in thousands)		1st Quarter 2013
Net Gain		$	49

ALLOWANCE FOR DOUBTFUL ACCOUNTS

Our operating companies encounter risks associated with sales and the collection of the associated accounts receivable. As such, they record provisions for accounts receivable that are considered to be uncollectible. In order to calculate the appropriate monthly provision, the operating companies primarily utilize historical rates of accounts receivables written off as a percentage of total revenue. This historical rate is applied to the current revenues on a monthly basis. The historical rate is updated periodically based on events that may change the rate, such as a significant increase or decrease in collection performance and timing of payments as well as the calculated total exposure in relation to the allowance. Periodically, operating companies compare identified credit risks with allowances that have been established using historical experience and adjust allowances accordingly. In circumstances where an operating company is aware of a specific customer’s inability to meet financial obligations, the operating company records a specific allowance for bad debts to reduce the account receivable to the amount it reasonably believes will be collected.

We believe the accounting estimates related to the allowance for doubtful accounts is critical because the underlying assumptions used for the allowance can change from period to period and could potentially cause a material impact to the income statement and working capital.

During 2012, for continuing operations, $845,000 of bad debt expense (0.1% of total 2012 revenue of $859.2 million) was recorded and the allowance for doubtful accounts was $1.3 million (1.4% of gross trade accounts receivable) as of December 31, 2012. General economic conditions and specific geographic concerns are major factors that may affect the adequacy of the allowance and may result in a change in the annual bad debt expense. An increase or decrease in our consolidated allowance for doubtful accounts based on one percentage point of outstanding trade receivables at December 31, 2012 would result in a $0.9 million increase or decrease in bad debt expense.

Although an estimated allowance for doubtful accounts on our operating companies’ accounts receivable is provided for, the allowance for doubtful accounts on the Electric segment’s wholesale electric sales is insignificant in proportion to annual revenues from these sales. The Electric segment has not experienced a bad debt related to wholesale electric sales largely due to stringent risk management criteria related to these sales. Nonpayment on a single wholesale electric sale could result in a significant bad debt expense.

DEPRECIATION EXPENSE AND DEPRECIABLE LIVES

The provisions for depreciation of electric utility property for financial reporting purposes are made on the straight-line method based on the estimated service lives (5 to 70 years) of the properties. Such provisions as a percent of the average balance of depreciable electric utility property were 2.98% in 2012, 2.94% in 2011 and 3.01% in 2010. Depreciation rates on electric utility property are subject to annual regulatory review and approval, and depreciation expense is recovered through rates set by ratemaking authorities. Although the useful lives of electric utility properties are estimated, the recovery of their cost is dependent on the ratemaking process. Deregulation of the electric industry could result in changes to the estimated useful lives of electric utility property that could impact depreciation expense.

Property and equipment of our nonelectric operations are carried at historical cost or at the then-current replacement cost if acquired in a business combination accounted for under the purchase method of accounting and are depreciated on a straight-line basis over useful lives (3 to 40 years) of the related assets. We believe the lives and methods of determining depreciation are reasonable, however, changes in economic conditions affecting the industries in which our manufacturing and infrastructure companies operate or innovations in technology could result in a reduction of the estimated useful lives of our manufacturing and infrastructure operating companies’ property, plant and equipment or in an impairment write-down of the carrying value of these properties.

TAXATION

We are required to make judgments regarding the potential tax effects of various financial transactions and our ongoing operations to estimate our obligations to taxing authorities. These tax obligations include income, real estate and use taxes. These judgments could result in the recognition of a liability for potential adverse outcomes regarding uncertain tax positions that we have taken. While we believe our liability for uncertain tax positions as of December 31, 2012 reflects the most likely probable expected outcome of these tax matters in accordance with the requirements of Accounting Standards Codification (ASC) 740, Income Taxes , the ultimate outcome of such matters could result in additional adjustments to our consolidated financial statements. However, we do not believe such adjustments would be material.

Deferred income taxes are provided for revenue and expenses which are recognized in different periods for income tax and financial reporting purposes. We assess our deferred tax assets for recoverability taking into consideration both our historical and anticipated earnings levels, the reversal of other existing temporary differences, available net operating loss carryforwards and available tax planning strategies that could be implemented to realize the deferred tax assets. Based on this assessment, management must evaluate the need for, and amount of, a valuation allowance against our deferred tax assets. As facts and circumstances change, adjustments to the valuation allowance may be required.

ASSET IMPAIRMENT

We are required to test for asset impairment relating to property and equipment whenever events or changes in circumstances indicate that the carrying amount of a long-lived asset may exceed its fair value and not be recoverable. We apply the accounting guidance under ASC 360-10-35, Property, Plant, and Equipment - Subsequent Measurement , in order to determine whether or not an asset is impaired. This standard requires an impairment analysis when indicators of impairment are present. If such indicators are present, the standard requires that if the sum of the future expected cash flows from a company’s asset, undiscounted and without interest charges, is less than the carrying amount, an asset impairment must be recognized in the financial statements. The amount of the impairment is the difference between the fair value of the asset and the carrying amount of the asset.

We believe the accounting estimates related to an asset impairment are critical because they are highly susceptible to change from period to period reflecting changing business cycles and require management to make assumptions about future cash flows over future years and the impact of recognizing an impairment could have a significant effect on operations. Management’s assumptions about future cash flows require significant judgment because actual operating levels have fluctuated in the past and are expected to continue to do so in the future.

In 2012, asset impairments were recorded at DMI, ShoreMaster and OTESCO. The DMI and ShoreMaster impairments were recorded in connection with their sales value and are reflected in the results of discontinued operations. As of December 31, 2012 an assessment of the carrying amounts of our remaining long-lived assets and other intangibles indicated these assets were not impaired.

GOODWILL IMPAIRMENT

Goodwill is required to be evaluated annually for impairment, according to ASC 350-20-35, Goodwill - Subsequent Measurement . The standard requires a two-step process be performed to analyze whether or not goodwill has been impaired. Step one is to test for potential impairment and requires that the fair value of the reporting unit be compared to its book value including goodwill. If the fair value is higher than the book value, no impairment is recognized. If the fair value is lower than the book value, a second step must be performed. The second step is to measure the amount of impairment loss, if any, and requires that a hypothetical purchase price allocation be done to determine the implied fair value of goodwill. This fair value is then compared to the carrying amount of goodwill. If the implied fair value is lower than the carrying amount, an impairment adjustment must be recorded.

We believe accounting estimates related to goodwill impairment are critical because the underlying assumptions used for the discounted cash flow can change from period to period and could potentially cause a material impact to the income statement. Management’s assumptions about inflation rates and other internal and external economic conditions, such as earnings growth rate, require significant judgment based on fluctuating rates and expected revenues. Additionally, ASC 350-20-35 requires goodwill be analyzed for impairment on an annual basis using the assumptions that apply at the time the analysis is updated.

We currently have $7.3 million of goodwill and a $1.1 million indefinite-lived trade name recorded on our balance sheet related to the acquisition of Foley in 2003. Foley generated a large operating loss in 2012 due to significant cost overruns on certain construction projects. If operating margins do not meet our projections, the reductions in anticipated cash flows from Foley may indicate that its fair value is less than its book value, resulting in an impairment of some or all of the goodwill and indefinite-lived intangible assets associated with Foley along with a corresponding charge against earnings.

We evaluate goodwill for impairment on an annual basis and as conditions warrant. An assessment of the carrying amounts of our goodwill as of December 31, 2012 indicated the fair values of our reporting units are substantially in excess of their respective book values and not impaired.

ACQUISITION METHOD OF ACCOUNTING

We account for acquisitions under the requirements of ASC 805, Business Combinations . Under ASC 805 the term “purchase method of accounting” is replaced with “acquisition method of accounting” and requires an acquirer to recognize the assets acquired, the liabilities assumed and any noncontrolling interest in the acquiree at the acquisition date, measured at their fair values as of that date, with limited exceptions.

Acquired assets and liabilities assumed that are subject to critical estimates include property, plant and equipment and intangible assets. The fair value of property, plant and equipment is based on valuations performed by qualified internal personnel and/or with the assistance of outside appraisers. Fair values assigned to plant and equipment are based on several factors including the age and condition of the equipment, maintenance records of the equipment and auction values for equipment with similar characteristics at the time of purchase. Intangible assets are identified and valued using the guidelines of ASC 805. The fair value of intangible assets is based on estimates including royalty rates, customer attrition rates and estimated cash flows.

While the allocation of purchase price is subject to a high degree of judgment and uncertainty, we do not expect the estimates to vary significantly once an acquisition is complete. We believe our estimates have been reasonable in the past as there have been no significant valuation adjustments to the allocation of purchase price.

FORWARD-LOOKING INFORMATION - SAFE HARBOR STATEMENT UNDER THE PRIVATE SECURITIES LITIGATION REFORM ACT OF 1995

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 (the Act). When used in this Form 10-K and in future filings by the Company with the SEC, in the Company’s press releases and in oral statements, words such as “may,” “will,” “expect,” “anticipate,” “continue,” “estimate,” “project,” “believes” or similar expressions are intended to identify forward-looking statements within the meaning of the Act. Such statements are based on current expectations and assumptions, and entail various risks and uncertainties that could cause actual results to differ materially from those expressed in such forward-looking statements. Such risks and uncertainties include the various factors set forth in Item 1A. Risk Factors of this Annual Report on Form 10-K and in our other SEC filings.

Item 7A.

QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

At December 31, 2012 we had no exposure to market risk associated with interest rates because we had no debt outstanding subject to variable interest rates.

All of our consolidated long-term debt has fixed interest rates. We manage our interest rate risk through the issuance of fixed-rate debt with varying maturities, through economic refunding of debt through optional refundings, limiting the amount of variable interest rate debt, and the utilization of short-term borrowings to allow flexibility in the timing and placement of long-term debt.

We have not used interest rate swaps to manage net exposure to interest rate changes related to our portfolio of borrowings. We maintain a ratio of fixed-rate debt to total debt within a certain range. It is our policy to enter into interest rate transactions and other financial instruments only to the extent considered necessary to meet our stated objectives. We do not enter into interest rate transactions for speculative or trading purposes.

The companies in our Manufacturing segment are exposed to market risk related to changes in commodity prices for steel, aluminum and Polystyrene (PS) and other plastics resins. The price and availability of these raw materials could affect the revenues and earnings of our Manufacturing segment.

The plastics companies are exposed to market risk related to changes in commodity prices for PVC resins, the raw material used to manufacture PVC pipe. The PVC pipe industry is highly sensitive to commodity raw material pricing volatility. Historically, when resin prices are rising or stable, sales volume has been higher and when resin prices are falling, sales volume has been lower. Operating income may decline when the supply of PVC pipe increases faster than demand. Due to the commodity nature of PVC resin and the dynamic supply and demand factors worldwide, it is very difficult to predict gross margin percentages or to assume that historical trends will continue.

OTP has market, price and credit risk associated with forward contracts for the purchase and sale of electricity. As of December 31, 2012 OTP had recognized, on a pretax basis, $49,000 in net unrealized gains on open forward contracts for the purchase and sale of electricity and electricity generating capacity. Due to the nature of electricity and the physical aspects of the electricity transmission system, unanticipated events affecting the transmission grid can cause transmission constraints that result in unanticipated gains or losses in the process of settling transactions.

The market prices used to value OTP’s forward contracts for the purchases and sales of electricity and electricity generating capacity are determined by survey of counterparties or brokers used by OTP’s power services’ personnel responsible for contract pricing, as well as prices gathered from daily settlement prices published by the Intercontinental Exchange and the CME Globex. For certain contracts, prices at illiquid trading points are based on a basis spread between that trading point and more liquid trading hub prices. These basis spreads are determined based on available market price information and the use of forward price curve models. The forward energy purchase contracts that are marked to market as of December 31, 2012, are 100% offset by forward energy sales contracts in terms of volumes, delivery periods and points of delivery. The differential in forward prices at the different delivery locations currently results in a net mark-to-market unrealized gain on OTP’s forward energy contracts of $49,000.

We have in place an energy risk management policy with a goal to manage, through the use of defined risk management practices, price risk and credit risk associated with wholesale power purchases and sales. Volumetric limits and loss limits are used to adequately manage the risks associated with our energy trading activities. Additionally, we have a Value at Risk (VaR) limit to further manage market price risk. There was no price risk on open positions as of December 31, 2012 because the open purchases were offset by open sales at the same point of delivery.

The following tables show the effect of marking to market forward contracts for the purchase and sale of electricity and the location and fair value amounts of the related derivatives reported on the Company’s consolidated balance sheets as of December 31, 2012 and December 31, 2011, and the change in the Company’s consolidated balance sheet position from December 31, 2011 to December 31, 2012 and December 31, 2010 to December 31, 2011:

(in thousands)	December 31, 2012			December 31, 2011

Current Asset – Marked-to-Market Gain	$	502		$	3,803
Regulatory Asset – Current Deferred Marked-to-Market Loss		7,949			5,208
Regulatory Asset – Long-Term Deferred Marked-to-Market Loss		10,050			10,749
Total Assets		18,501			19,760

Current Liability – Marked-to-Market Loss		(18,234	)		(18,770	)
Regulatory Liability – Current Deferred Marked-to-Market Gain		(8	)		(96	)
Regulatory Liability – Long-Term Deferred Marked-to-Market Gain		(210	)		--
Total Liabilities		(18,452	)		(18,866	)

Net Fair Value of Marked-to-Market Energy Contracts	$	49		$	894

(in thousands)	Year ended December 31, 2012			Year ended December 31, 2011
Cumulative Fair Value Adjustments Included in Earnings - Beginning of Period	$	894		$	763
Less: Amounts Realized on Settlement of Contracts Entered into in Prior Periods		(861	)		(356	)
Changes in Fair Value of Contracts Entered into in Prior Periods		(33	)		(86	)
Cumulative Fair Value Adjustments in Earnings of Contracts Entered into in Prior Years at End of Period		--			321
Changes in Fair Value of Contracts Entered into in Current Period		49			573
Cumulative Fair Value Adjustments Included in Earnings - End of Period	$	49		$	894

The $49,000 in recognized but unrealized net gains on the forward energy and capacity purchases and sales marked to market on December 31, 2012 is expected to be realized on settlement in the first quarter of 2013.

The following realized and unrealized net (losses) and gains on forward energy contracts are included in electric operating revenues on our consolidated statements of income:

	Year Ended December 31,
(in thousands)	2012			2011		2010
Net (Losses) Gains on Forward Electric Energy Contracts	$	(61	)	$	926	$	2,135

OTP has credit risk associated with the nonperformance or nonpayment by counterparties to its forward energy and capacity purchases and sales agreements. We have established guidelines and limits to manage credit risk associated with wholesale power and capacity purchases and sales. Specific limits are determined by a counterparty’s financial strength. OTP’s credit risk with its largest counterparty on delivered and marked-to-market forward contracts as of December 31, 2012 was $285,000. As of December 31, 2012 OTP had a net credit risk exposure of $580,000 from five counterparties with investment grade credit ratings and one counterparty that has not been rated by an external credit rating agency but has been evaluated internally and assigned an internal credit rating equivalent to investment grade. OTP had no exposure at December 31, 2012 to counterparties with credit ratings below investment grade. Counterparties with investment grade credit ratings have minimum credit ratings of BBB- (Standard & Poor’s), Baa3 (Moody’s) or BBB- (Fitch). The $580,000 credit risk exposure included net amounts due to OTP on receivables/payables from completed transactions billed and unbilled plus marked-to-market gains/losses on forward contracts for the purchase and sale of electricity scheduled for delivery after December 31, 2012. Individual counterparty exposures are offset according to legally enforceable netting arrangements.

Item 8.

FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders of

Otter Tail Corporation

We have audited the accompanying consolidated balance sheets and statements of capitalization of Otter Tail Corporation and its subsidiaries (the “Company”) as of December 31, 2012 and 2011, and the related consolidated statements of income, comprehensive income, common shareholders’ equity, and cash flows for each of the three years in the period ended December 31, 2012. Our audits also included the financial statement schedule listed in the Index at Item 15. We also have audited the Company ’ s internal control over financial reporting as of December 31, 2012 based on the criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission. The Company’s management is responsible for these financial statements and financial statement schedule, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management’s Report Regarding Internal Control Over Financial Reporting. Our responsibility is to express an opinion on these financial statements and financial statement schedule and an opinion on the Company’s internal control over financial reporting based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the financial statements and financial statement schedule included examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

A company’s internal control over financial reporting is a process designed by, or under the supervision of, the company’s principal executive and principal financial officers, or persons performing similar functions, and effected by the company’s board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of the inherent limitations of internal control over financial reporting, including the possibility of collusion or improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

In our opinion, the consolidated financial statements and financial statement schedule referred to above present fairly, in all material respects, the financial position of Otter Tail Corporation and its subsidiaries as of December 31, 2012 and 2011, and the results of their operations and their cash flows for each of the three years in the period ended December 31, 2012, in conformity with accounting principles generally accepted in the United States of America. Also, in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2012, based on the criteria established in Internal Control — Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission.

/s/ Deloitte & Touche LLP

Minneapolis, Minnesota

February 27, 2013

OTTER TAIL CORPORATION

Consolidated Balance Sheets, December 31
(in thousands)	2012		2011

ASSETS

Current Assets
Cash and Cash Equivalents	$	52,362	$	15,994
Accounts Receivable:
Trade (less allowance for doubtful accounts of $1,279 for 2012 and $1,114 for 2011)		91,170		93,392
Other		7,684		8,660
Inventories		69,336		68,743
Deferred Income Taxes		30,964		9,523
Unbilled Revenue		15,701		13,719
Costs and Estimated Earnings in Excess of Billings		3,663		12,211
Regulatory Assets		25,499		27,391
Other		8,161		15,009
Assets of Discontinued Operations		19,092		209,929
Total Current Assets		323,632		474,571

Investments		9,471		11,093
Other Assets		26,222		26,997
Goodwill		38,971		39,118
Other Intangibles--Net		14,305		15,286

Deferred Debits
Unamortized Debt Expense		5,529		6,458
Regulatory Assets		134,755		124,137
Total Deferred Debits		140,284		130,595

Plant
Electric Plant in Service		1,423,303		1,372,534
Nonelectric Operations		186,094		177,328
Construction Work in Progress		77,890		52,751
Total Gross Plant		1,687,287		1,602,613
Less Accumulated Depreciation and Amortization		637,835		599,751
Net Plant		1,049,452		1,002,862

Total Assets	$	1,602,337	$	1,700,522

See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION

Consolidated Balance Sheets, December 31
(in thousands, except share data)	2012			2011

LIABILITIES AND EQUITY

Current Liabilities
Current Maturities of Long-Term Debt	$	176		$	165
Accounts Payable		88,406			80,457
Accrued Salaries and Wages		20,571			15,862
Billings In Excess Of Costs and Estimated Earnings		16,204			9,175
Accrued Taxes		12,047			11,696
Derivative Liabilities		18,234			18,770
Other Accrued Liabilities		6,334			5,540
Liabilities of Discontinued Operations		11,156			50,691
Total Current Liabilities		173,128			192,356

Pensions Benefit Liability		116,541			106,818
Other Postretirement Benefits Liability		58,883			48,263
Other Noncurrent Liabilities		22,244			18,102

Commitments and Contingencies (note 9)

Deferred Credits
Deferred Income Taxes		171,787			173,312
Deferred Tax Credits		31,299			33,182
Regulatory Liabilities		68,835			69,106
Other		466			520
Total Deferred Credits		272,387			276,120

Capitalization (page 70)
Long-Term Debt, Net of Current Maturities		421,680			471,915

Cumulative Preferred Shares Authorized 1,500,000 Shares Without Par Value; Outstanding 2012 and 2011 – 155,000 Shares		15,500			15,500

Cumulative Preference Shares – Authorized 1,000,000 Shares Without Par Value; Outstanding - None		--			--

Common Shares, Par Value $5 Per Share--Authorized, 50,000,000 Shares;
Outstanding, 2012—36,168,368 Shares; 2011—36,101,695 Shares		180,842			180,509
Premium on Common Shares		253,296			253,123
Retained Earnings		92,221			141,248
Accumulated Other Comprehensive Loss		(4,385	)		(3,432	)
Total Common Equity		521,974			571,448

Total Capitalization		959,154			1,058,863

Total Liabilities and Equity	$	1,602,337		$	1,700,522
See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION

Consolidated Statements of Income--For the Years Ended December 31
(in thousands, except per-share amounts)	2012			2011			2010

Operating Revenues
Electric	$	350,679		$	342,633		$	344,264
Nonelectric		508,560			497,536			373,633
Total Operating Revenues		859,239			840,169			717,897

Operating Expenses
Production Fuel - Electric		66,284			69,017			73,102
Purchased Power - Electric System Use		49,184			43,451			44,788
Electric Operation and Maintenance Expenses		121,069			115,863			112,174
Cost of Goods Sold - Nonelectric (excludes depreciation; included below)		417,138			421,650			309,507
Other Nonelectric Expenses		52,621			49,296			46,715
Asset Impairment Charge		432			470			--
Depreciation and Amortization		59,764			58,335			57,647
Property Taxes - Electric		10,720			10,190			9,364
Total Operating Expenses		777,212			768,272			653,297

Operating Income		82,027			71,897			64,600

Loss on Early Retirement of Debt		13,106			--			--
Interest Charges		31,905			35,629			36,848
Other Income		4,085			2,763			1,759
Income Before Income Taxes – Continuing Operations		41,101			39,031			29,511
Income Tax Expense – Continuing Operations		2,133			4,121			3,231
Net Income from Continuing Operations		38,968			34,910			26,280
Discontinued Operations
Loss - net of Income Tax Expense (Benefit) of $6,231, ($1,811) and $4,834 for the respective periods		(6,603	)		(14,294	)		(11,998	)
Impairment Loss - net of Income Tax (Benefit) of ($21,213), ($17,444) and ($4,114) for the respective periods		(32,107	)		(42,533	)		(15,626	)
(Loss) Gain on Disposition - net of Income Tax Expense of $315 in 2012 and $5,851 in 2011		(5,531	)		8,674			--
Net Loss from Discontinued Operations		(44,241	)		(48,153	)		(27,624	)
Total Net Loss		(5,273	)		(13,243	)		(1,344	)
Preferred Dividend Requirement and Other Adjustments		736			1,058			833
Loss Available for Common Shares	$	(6,009	)	$	(14,301	)	$	(2,177	)

Average Number of Common Shares Outstanding--Basic		36,048			35,922			35,784
Average Number of Common Shares Outstanding--Diluted		36,242			36,082			36,012

Basic Earnings (Loss) Per Common Share:
Continuing Operations (net of preferred dividend requirement)	$	1.06		$	0.95		$	0.71
Discontinued Operations (net of other adjustments)	$	(1.23	)	$	(1.35	)	$	(0.77	)
	$	(0.17	)	$	(0.40	)	$	(0.06	)
Diluted Earnings (Loss) Per Common Share:
Continuing Operations (net of preferred dividend requirement)	$	1.05		$	0.95		$	0.71
Discontinued Operations (net of other adjustments)	$	(1.22	)	$	(1.35	)	$	(0.77	)
	$	(0.17	)	$	(0.40	)	$	(0.06	)
Dividends Declared Per Common Share	$	1.19		$	1.19		$	1.19
See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION

Consolidated Statements of Comprehensive Income--For the Years Ended December 31
(in thousands)	2012			2011			2010
Net Loss	$	(5,273	)	$	(13,243	)	$	(1,344	)
Other Comprehensive Income (Loss):
Unrealized Gain (Loss) on Available-for-Sale Securities:
Net Gain (Loss) Arising During Period		154			(121	)		50
Income Tax (Expense) Benefit		(53	)		48			(20	)
Net Gain (Loss) on Available-for-Sale Securities – net-of-tax		101			(73	)		30
Foreign Currency Translation Adjustment Gain (Loss):
Unrealized Net Change During Period		--			303			1,335
Reversal of Previously Recognized Gains Realized on Sale of IPH in 2011		--			(6,068	)		--
Income Tax Benefit (Expense)		--			1,787			(15	)
Foreign Currency Translation Adjustment (Loss) Gain – net-of-tax		--			(3,978	)		1,320
Pension and Postretirement Benefit Plans:
Actuarial (Losses) Gains Net of Regulatory Allocation Adjustment		(2,133	)		(1,686	)		1,738
Amortization of Unrecognized Postretirement Benefit Costs		376			239			682
Income Tax Benefit (Expense)		703			579			(968	)
Pension and Postretirement Benefit Plans – net-of-tax		(1,054	)		(868	)		1,452
Total Other Comprehensive (Loss) Income		(953	)		(4,919	)		2,802
Total Comprehensive (Loss) Income	$	(6,226	)	$	(18,162	)	$	1,458
See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION

Consolidated Statements of Common Shareholders’ Equity

(in thousands, except common shares outstanding)	Common Shares Outstanding			Par Value, Common Shares			Premium on Common Shares			Retained Earnings			Accumulated Other Comprehensive Income/(Loss)			Total Common Equity
Balance, December 31, 2009		35,812,280		$	179,061		$	250,398		$	243,352		$	(1,315	) (a)	$	671,496
Common Stock Issuances, Net of Expenses		208,333			1,042			2,054									3,096
Common Stock Retirements		(17,874	)		(89	)		(312	)								(401	)
Net Loss											(1,344	)					(1,344	)
Other Comprehensive Income														2,802			2,802
Tax Benefit – Stock Compensation								(1,404	)								(1,404	)
Stock Incentive Plan Performance Award Accrual								1,415									1,415
Premium on Purchase of Stock for Employee Purchase Plan								(232	)								(232	)
Premium on Purchase of Subsidiary Class B Stock and Options											(98	)					(98	)
Cumulative Preferred Dividends											(736	)					(736	)
Common Dividends											(42,731	)					(42,731	)
Balance, December 31, 2010		36,002,739		$	180,014		$	251,919		$	198,443		$	1,487	(a)	$	631,863
Common Stock Issuances, Net of Expenses		154,225			771			2,671									3,442
Common Stock Retirements		(55,269	)		(276	)		(906	)								(1,182	)
Net Loss											(13,243	)					(13,243	)
Other Comprehensive Loss														(4,919	)		(4,919	)
Tax Benefit – Stock Compensation								(875	)								(875	)
Employee Stock Incentive Plan Expense								606									606
Premium on Purchase of Stock for Employee Purchase Plan								(292	)								(292	)
Premium on Purchase of Subsidiary Class B Stock and Options											(322	)					(322	)
Cumulative Preferred Dividends											(735	)					(735	)
Common Dividends											(42,895	)					(42,895	)
Balance, December 31, 2011		36,101,695		$	180,509		$	253,123		$	141,248		$	(3,432	)(a)	$	571,448
Common Stock Issuances, Net of Expenses		71,745			359			148									507
Common Stock Retirements		(5,072	)		(26	)		(85	)								(111	)
Net Loss											(5,273	)					(5,273	)
Other Comprehensive Loss														(953	)		(953	)
Tax Benefit – Stock Compensation								(103	)								(103	)
Employee Stock Incentive Plan Expense								435									435
Premium on Purchase of Stock for Employee Purchase Plan								(222	)								(222	)
Cumulative Preferred Dividends											(736	)					(736	)
Common Dividends											(43,018	)					(43,018	)
Balance, December 31, 2012		36,168,368		$	180,842		$	253,296		$	92,221		$	(4,385	)(a)	$	521,974

(a) Accumulated Other Comprehensive Income (Loss) on December 31 is comprised of the following:
(in thousands)	2012			2011			2010
Unrealized Gain on Marketable Equity Securities:
Before Tax	$	177		$	23		$	145
Tax Effect		(62	)		(9	)		(58	)
Unrealized Gain on Marketable Equity Securities – Net-of-Tax		115			14			87
Foreign Currency Exchange Translation – Net-of-Tax:
Before Tax		--			--			5,765
Tax Effect		--			--			(1,787	)
Foreign Currency Exchange Translation – Net-of-Tax		--			--			3,978
Unamortized Actuarial Losses and Transition Obligation Related to Pension and Postretirement Benefits:
Before Tax		(7,500	)		(5,743	)		(4,296	)
Tax Effect		3,000			2,297			1,718
Unamortized Actuarial Losses and Transition Obligation Related to Pension and Postretirement Benefits – Net-of-Tax		(4,500	)		(3,446	)		(2,578	)
Accumulated Other Comprehensive (Loss) Income:
Before Tax		(7,323	)		(5,720	)		1,614
Tax Effect		2,938			2,288			(127	)
Net Accumulated Other Comprehensive (Loss) Income	$	(4,385	)	$	(3,432	)	$	1,487
See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION
Consolidated Statements of Cash Flows--For the Years Ended December 31
(in thousands)	2012			2011			2010
Cash Flows from Operating Activities
Net Loss	$	(5,273	)	$	(13,243	)	$	(1,344	)
Adjustments to Reconcile Net Loss to Net Cash Provided by Operating Activities:
Net Loss (Gain) from Sale of Discontinued Operations		5,531			(8,674	)		--
Net Loss from Discontinued Operations		38,710			56,827			27,624
Depreciation and Amortization		59,764			58,335			57,647
Asset Impairment Charge		432			470			--
Deferred Tax Valuation Adjustments and Tax Rate Reduction		--			--			8,300
Premium Paid for Early Retirement of Long-Term Debt		12,500			--			--
Deferred Tax Credits		(2,091	)		(2,386	)		(2,715	)
Deferred Income Taxes		11,459			10,661			10,990
Change in Deferred Debits and Other Assets		(4,802	)		(25,053	)		30
Discretionary Contribution to Pension Fund		(10,000	)		--			(20,000	)
Change in Noncurrent Liabilities and Deferred Credits		32,718			35,178			2,786
Allowance for Equity (Other) Funds Used During Construction		(1,168	)		(861	)		(4	)
Change in Derivatives Net of Regulatory Deferral		718			72			208
Stock Compensation Expense – Equity Awards		1,311			2,177			2,923
Other—Net		4,500			6,496			5,847
Cash Provided by (Used for) Current Assets and Current Liabilities:
Change in Receivables		2,430			(7,952	)		(31,094	)
Change in Inventories		(687	)		(5,286	)		(8,167	)
Change in Other Current Assets		7,019			(1,072	)		(6,559	)
Change in Payables and Other Current Liabilities		30,056			(4,775	)		16,256
Change in Interest Payable and Income Taxes Receivable/Payable		(14,141	)		(7,236	)		43,206
Net Cash Provided by Continuing Operations		168,986			93,678			105,934
Net Cash Provided by (Used in) Discontinued Operations		64,561			10,705			(917	)
Net Cash Provided by Operating Activities		233,547			104,383			105,017
Cash Flows from Investing Activities
Capital Expenditures		(115,762	)		(67,360	)		(58,264	)
Proceeds from Disposal of Noncurrent Assets		4,889			1,923			827
Net Increase in Other Investments		(1,037	)		(40	)		(2,855	)
Net Cash Used in Investing Activities - Continuing Operations		(111,910	)		(65,477	)		(60,292	)
Net Proceeds from Sale of Discontinued Operations		42,229			107,310			--
Net Cash Used in Investing Activities - Discontinued Operations		(13,896	)		(36,410	)		(24,875	)
Net Cash (Used in) Provided by Investing Activities		(83,577	)		5,423			(85,167	)
Cash Flows from Financing Activities
Change in Checks Written in Excess of Cash		--			(7,268	)		7,268
Net Short-Term (Repayments) Borrowings		--			(79,490	)		71,905
Proceeds from Issuance of Common Stock		--			--			549
Proceeds from Issuance of Class B Stock of Subsidiary		--			--			153
Common Stock Issuance Expenses		(370	)		--			(142	)
Payments for Retirement of Common Stock		(111	)		(1,182	)		(401	)
Payments for Retirement of Class B Stock and Options of Subsidiary		--			--			(1,012	)
Proceeds from Issuance of Long-Term Debt		--			142,006			--
Short-Term and Long-Term Debt Issuance Expenses		(897	)		(1,666	)		(1,699	)
Payments for Retirement of Long-Term Debt		(50,224	)		(100,796	)		(58,451	)
Premium Paid for Early Retirement of Long-Term Debt		(12,500	)		--			--
Dividends Paid and Other Distributions		(43,976	)		(43,923	)		(43,698	)
Net Cash Used in Financing Activities - Continuing Operations		(108,078	)		(92,319	)		(25,528	)
Net Cash (Used in) Provided by Financing Activities - Discontinued Operations		(4,278	)		(3,184	)		1,812
Net Cash Used in Financing Activities		(112,356	)		(95,503	)		(23,716	)
Net Change in Cash and Cash Equivalents - Discontinued Operations		(1,246	)		2,015			(2,495	)
Effect of Foreign Exchange Rate Fluctuations on Cash – Discontinued Operations		--			(324	)		(566	)
Net Change in Cash and Cash Equivalents		36,368			15,994			(6,927	)
Cash and Cash Equivalents at Beginning of Period		15,994			--			6,927
Cash and Cash Equivalents at End of Period	$	52,362		$	15,994		$	--
See accompanying notes to consolidated financial statements.

OTTER TAIL CORPORATION

Consolidated Statements of Capitalization, December 31
(in thousands, except share data)			2012		2011

Long-Term Debt
Obligations of Otter Tail Corporation
9.000% Notes, due December 15, 2016			$	100,000	$	100,000
Senior Unsecured Note 8.89%, due November 30, 2017, retired early on July 13, 2012				--		50,000
North Dakota Development Note, 3.95%, due April 1, 2018				393		458
Partnership in Assisting Community Expansion (PACE) Note, 2.54%, due March 18, 2021				1,332		1,431
Total – Otter Tail Corporation				101,725		151,889

Obligations of Otter Tail Power Company
Senior Unsecured Notes 5.95%, Series A, due August 20, 2017				33,000		33,000
Grant County, South Dakota Pollution Control Refunding Revenue Bonds 4.65%, due September 1, 2017				5,065		5,090
Senior Unsecured Notes 4.63%, due December 1, 2021				140,000		140,000
Senior Unsecured Notes 6.15%, Series B, due August 20, 2022				30,000		30,000
Mercer County, North Dakota Pollution Control Refunding Revenue Bonds 4.85%, due September 1, 2022				20,070		20,105
Senior Unsecured Notes 6.37%, Series C, due August 20, 2027				42,000		42,000
Senior Unsecured Notes 6.47%, Series D, due August 20, 2037				50,000		50,000
Total – Otter Tail Power Company				320,135		320,195

Total				421,860		472,084
Less:
Current Maturities – Otter Tail Corporation				176		165
Unamortized Debt Discount – Otter Tail Corporation				4		4
Total Long-Term Debt				421,680		471,915
Cumulative Preferred Shares —Without Par Value (Stated and Liquidating Value $100 a Share)— Authorized 1,500,000 Shares; nonvoting and redeemable at the option of the Company:
Series Outstanding:	Call Price December 31, 2012
$3.60, 60,000 Shares	$	102.2500		6,000		6,000
$4.40, 25,000 Shares	$	102.0000		2,500		2,500
$4.65, 30,000 Shares	$	101.5000		3,000		3,000
$6.75, 40,000 Shares	$	100.3375		4,000		4,000
Total Preferred				15,500		15,500
Cumulative Preference Shares --Without Par Value, Authorized 1,000,000 Shares; Outstanding: None
Total Common Shareholders’ Equity				521,974		571,448
Total Capitalization			$	959,154	$	1,058,863
See accompanying notes to consolidated financial statements.

Otter Tail Corporation

Notes to Consolidated Financial Statements

For the years ended December 31, 2012, 2011 and 2010

1. Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements of Otter Tail Corporation and its wholly owned subsidiaries (the Company) include the accounts of the following segments: Electric, Manufacturing, Construction and Plastics. See note 2 to the consolidated financial statements for further descriptions of the Company’s business segments. All significant intercompany balances and transactions have been eliminated in consolidation except profits on sales to the regulated electric utility company from nonregulated affiliates, which is in accordance with the requirements of Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 980, Regulated Operations, (ASC 980).

Regulation and ASC 980

The Company’s regulated electric utility company, Otter Tail Power Company (OTP), accounts for the financial effects of regulation in accordance with ASC 980. This standard allows for the recording of a regulatory asset or liability for costs and revenues that will be collected or refunded through the ratemaking process in the future. In accordance with regulatory treatment, OTP defers utility debt redemption premiums and amortizes such costs over the original life of the reacquired bonds. See note 4 for further discussion.

OTP is subject to various state and federal agency regulations. The accounting policies followed by this business are subject to the Uniform System of Accounts of the Federal Energy Regulatory Commission (FERC). These accounting policies differ in some respects from those used by the Company’s nonelectric businesses.

Plant, Retirements and Depreciation

Utility plant is stated at original cost. The cost of additions includes contracted work, direct labor and materials, allocable overheads and allowance for funds used during construction. The amount of interest capitalized on electric utility plant was $656,000 in 2012, $628,000 in 2011 and $76,000 in 2010. The cost of depreciable units of property retired less salvage is charged to accumulated depreciation. Removal costs, when incurred, are charged against the accumulated reserve for estimated removal costs, a regulatory liability. Maintenance, repairs and replacement of minor items of property are charged to operating expenses. The provisions for utility depreciation for financial reporting purposes are made on the straight-line method based on the estimated service lives of the properties. Such provisions as a percent of the average balance of depreciable electric utility property were 2.98% in 2012, 2.94% in 2011 and 3.01% in 2010. Gains or losses on group asset dispositions are taken to the accumulated provision for depreciation reserve and impact current and future depreciation rates.

Property and equipment of nonelectric operations are carried at historical cost or at the then-current replacement cost if acquired in a business combination accounted for under the purchase method of accounting, and are depreciated on a straight-line basis over the assets’ estimated useful lives (3 to 40 years). The cost of additions includes contracted work, direct labor and materials, allocable overheads and capitalized interest. No interest was capitalized on nonelectric plant in 2012, 2011 or 2010. Maintenance and repairs are expensed as incurred. Gains or losses on asset dispositions are included in the determination of operating income.

Jointly Owned Plants

The consolidated balance sheets include OTP’s ownership interests in the assets and liabilities of Big Stone Plant (53.9%) and Coyote Station (35.0%). The following amounts are included in the December 31, 2012 and 2011 consolidated balance sheets:

(in thousands)	2012			2011
Big Stone Plant:
Electric Plant in Service	$	141,221		$	143,993
Construction Work in Progress		22,335			2,674
Accumulated Depreciation		(80,588	)		(87,669	)
Net Plant	$	82,968		$	58,998
Coyote Station:
Electric Plant in Service	$	160,617		$	156,213
Construction Work in Progress		578			1,533
Accumulated Depreciation		(93,564	)		(97,090	)
Net Plant	$	67,631		$	60,656

The Company’s share of direct revenue and expenses of the jointly owned plants is included in operating revenue and expenses in the consolidated statements of income.

Coyote Station Lignite Supply Agreement – Variable Interest Entity

In October 2012, the Coyote Station owners, including OTP, entered into a lignite sales agreement (LSA) with Coyote Creek Mining Company, L.L.C. (CCMC), a subsidiary of The North American Coal Corporation, for the purchase of coal to meet the coal supply requirements of Coyote Station for the period beginning in May 2016 and ending in December 2040. The price per ton to be paid by the Coyote Station owners under the LSA will reflect the cost of production, along with an agreed profit and capital charge. CCMC was formed for the purpose of mining lignite coal to meet the coal fuel supply requirements of Coyote Station from May 2016 through December 2040 and, based on the terms of the LSA, is considered a variable interest entity (VIE). Under current accounting standards, the primary beneficiary of a VIE is required to include the assets, liabilities, results of operations and cash flows of the VIE in its consolidated financial statements. Although Coyote Station is the primary beneficiary of the VIE, no single owner of Coyote Station owns a majority interest in Coyote Station and none, individually, have the power to direct the activities that most significantly impact CCMC. Therefore, none of the owners individually, including OTP, is considered a primary beneficiary of the VIE.

Under the LSA, all development period costs of the Coyote Creek coal mine incurred during the development period will be recovered from the Coyote Station owners over the full term of the production period, which commences with the first delivery of coal to Coyote Station, scheduled for May 2016, by being included in the cost of production. The development fee and the capital charge incurred during the development period will be recovered from the Coyote Station owners over the first 52 months of the production period by being included in the cost of production during those months. OTP’s 35% share of development period costs, development fees and capital charges incurred by CCMC through December 31, 2012 totaled $8.3 million.

Recoverability of Long-Lived Assets

The Company reviews its long-lived assets whenever events or changes in circumstances indicate the carrying amount of the assets may not be recoverable. The Company determines potential impairment by comparing the carrying amount of the assets with net cash flows expected to be provided by operating activities of the business or related assets. If the sum of the expected future net cash flows is less than the carrying amount of the assets, the Company would recognize an impairment loss. Such an impairment loss would be measured as the amount by which the carrying amount exceeds the fair value of the asset, where fair value is based on the discounted cash flows expected to be generated by the asset.

In the fourth quarter of 2011, DMI Industries, Inc. (DMI) recorded a $3.1 million asset impairment charge on its plant in Fort Erie, Ontario. DMI idled this plant in the fourth quarter of 2011, as the plant had completed all of its then current tower orders.

In June 2012, the Company entered into a nonbinding letter of interest with Trinity Industries, Inc. (Trinity) to sell the fixed assets of DMI for $20 million, with the Company retaining DMI’s net working capital—approximately $66 million on June 30, 2012. On September 6, 2012 the Company entered into definitive agreements with Trinity to sell the fixed assets of DMI for $20 million. The agreed on price for the fixed assets was an indicator of the fair value of the assets under level 2 of the ASC fair value hierarchy and an indication of a decrease in the market value of the assets being sold, which were significantly impacted by a decline in market conditions in the wind energy industry. DMI had no tower orders for 2013 due to the expected expiration, at the end of 2012, of the Federal Production Tax Credit (PTC) for investments in renewable energy resources. These factors resulted in DMI recording a fair value adjustment of its long-lived assets to the indicated market price of $20 million and an asset impairment charge of $45.6 million ($27.5 million net-of-tax benefits), or $0.76 per share, in June 2012 broken down as follows:

(in thousands)
Long-Lived Assets (net of accumulated depreciation)	$	45,285
Goodwill		288
Total Asset Impairment Charges	$	45,573

The sale of the Fort Erie fixed assets closed on September 6, 2012, the West Fargo transaction closed on October 31, 2012 and the Tulsa transaction closed on November 30, 2012. With the sale of DMI’s Tulsa assets DMI’s operations under the Company ended and, accordingly, DMI’s cash flows, results of operations, and any remaining assets and liabilities are reported under discontinued operations as of, and for all periods ending prior to, December 31, 2012.

Otter Tail Energy Services Company (OTESCO) recorded asset impairment charges of $0.4 million in 2012 and $0.5 million in 2011 related to wind farm development rights at its Sheridan Ridge and Stutsman County sites in North Dakota based on the fair value of these assets declining to $0 as of March 31, 2012.

On February 8, 2013 the Company closed on the sale of substantially all of the assets of ShoreMaster Inc. (ShoreMaster), subject to certain closing conditions. The Company recorded a $7.7 million ($4.6 million net-of-tax benefits), or $0.13 per share, asset impairment charge in December 2012 based on the indicated market value of ShoreMaster’s assets broken down as follows:

(in thousands)
Long-Lived Assets (net of accumulated depreciation)	$	5,859
Inventory		782
Accrued Selling Costs		1,106
Total Impairment Charges	$	7,747

As a result of the pending sale, ShoreMaster’s assets are considered held for sale as of December 31, 2012 and, along with its liabilities, cash flows, and results of operations, are reported under discontinued operations as of, and for all periods ending prior to, December 31, 2012.

Income Taxes

Comprehensive interperiod income tax allocation is used for substantially all book and tax temporary differences. Deferred income taxes arise for all temporary differences between the book and tax basis of assets and liabilities. Deferred taxes are recorded using the tax rates scheduled by tax law to be in effect in the periods when the temporary differences reverse. The Company amortizes investment tax credits over the estimated lives of related property. The Company records income taxes in accordance with ASC 740, Income Taxes, and has recognized in its consolidated financial statements the tax effects of all tax positions that are “ more-likely-than-not ” to be sustained on audit based solely on the technical merits of those positions as of the balance sheet date. The term “more-likely-than-not” means a likelihood of more than 50%. The Company classifies interest and penalties on tax uncertainties as components of the provision for income taxes. See note 15 to the consolidated financial statements regarding the Company’s accounting for uncertain tax positions.

The Company also is required to assess the realizability of its deferred tax assets, taking into consideration the Company’s forecast of future taxable income, the reversal of other existing temporary differences, available net operating loss carryforwards and available tax planning strategies that could be implemented to realize the deferred tax assets. Based on this assessment, management must evaluate the need for, and amount of, valuation allowances against the Company’s deferred tax assets. If we determine we would be able to realize our deferred income tax assets in the future in excess of their net recorded amount, we would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes. To the extent facts and circumstances change in the future, adjustments to the valuation allowance may be required.

Revenue Recognition

Due to the diverse business operations of the Company, revenue recognition depends on the product produced and sold or service performed. The Company recognizes revenue when the earnings process is complete, evidenced by an agreement with the customer, there has been delivery and acceptance, and the price is fixed or determinable. In cases where significant obligations remain after delivery, revenue recognition is deferred until such obligations are fulfilled. Provisions for sales returns and warranty costs are recorded at the time of the sale based on historical information and current trends. In the case of derivative instruments, such as OTP’s forward energy contracts, marked-to-market and realized gains and losses are recognized on a net basis in revenue in accordance with ASC 815, Derivatives and Hedging . Gains and losses on forward energy contracts subject to regulatory treatment, if any, are deferred and recognized on a net basis in revenue in the period realized.

For the Company’s operating companies recognizing revenue on certain products when shipped, those operating companies have no further obligation to provide services related to such product. The shipping terms used in these instances are FOB shipping point.

Customer electricity use is metered and bills are rendered monthly. Revenue is accrued for electricity consumed but not yet billed. Rate schedules applicable to substantially all customers include a fuel clause adjustment, under which the rates are adjusted to reflect changes in average cost of fuels and purchased power, and a surcharge for recovery of conservation-related expenses. Revenue is recognized for fuel and purchased power costs incurred in excess of amounts recovered in base rates but not yet billed through the fuel clause adjustment, for conservation program incentives and bonuses earned but not yet billed and for renewable resource and transmission-related incurred costs and investment returns approved for recovery through riders.

Revenues on wholesale electricity sales from Company-owned generating units are recognized when energy is delivered.

OTP’s unrealized gains and losses on forward energy contracts that do not meet the definition of capacity contracts are marked to market and reflected on a net basis in electric revenue on the Company’s consolidated statement of income. Under ASC 815, OTP’s forward energy contracts that do not meet the definition of a capacity contract and are subject to unplanned netting do not qualify for the normal purchase and sales exception from mark-to-market accounting. See note 5 for further discussion.

Manufacturing operating revenues are recorded when products are shipped.

The companies in the Construction segment enter into fixed-price construction contracts. Revenues under these contracts are recognized on a percentage-of-completion basis. The method used to determine the progress of completion is based on the ratio of costs incurred to total estimated costs on construction projects. Following are the percentages of the Company’s consolidated revenues recorded under the percentage-of-completion method:

		2012				2011				2010
Percentage-of-Completion Revenues			17.3	%			22.0	%			18.6	%

The following table summarizes costs incurred and billings and estimated earnings recognized on uncompleted contracts:

	December 31,			December 31,
(in thousands)	2012			2011
Costs Incurred on Uncompleted Contracts	$	307,085		$	321,346
Less Billings to Date		(321,388	)		(340,418	)
Plus Estimated Earnings Recognized		1,762			22,108
	$	(12,541	)	$	3,036

The following costs and estimated earnings in excess of billings and billings in excess of costs and estimated earnings are included in the Company’s consolidated balance sheets.

	December 31,			December 31,
(in thousands)	2012			2011
Costs and Estimated Earnings in Excess of Billings on Uncompleted Contracts	$	3,663		$	12,211
Billings in Excess of Costs and Estimated Earnings on Uncompleted Contracts		(16,204	)		(9,175	)
	$	(12,541	)	$	3,036

The Company has a standard quarterly Estimate at Completion process in which management reviews the progress and performance of the Company’s contracts accounted for under percentage-of-completion accounting. As part of this process, management reviews include, but are not limited to, any outstanding key contract matters, progress towards completion and the related program schedule, identified risks and opportunities, and the related changes in estimates of revenues and costs. The risks and opportunities include management’s judgment about the ability and cost to achieve the schedule, technical requirements and other contract requirements. Management must make assumptions regarding labor productivity and availability, the complexity of the work to be performed, the availability of materials, the length of time to complete the contract, and performance by subcontractors, among other variables. Based on this analysis, any adjustments to net sales, costs of sales, and the related impact to operating income are recorded as necessary in the period they become known. These adjustments may result from positive program performance and an increase in operating profit during the performance of individual contracts if management determines it will be successful in mitigating risks surrounding the technical, schedule, and cost aspects of those contracts or realizing related opportunities. Likewise, these adjustments may result in a decrease in operating profit if management determines it will not be successful in mitigating these risks or realizing related opportunities. Changes in estimates of net sales, costs of sales, and the related impact to operating income are recognized using a cumulative catch-up, which recognizes, in the current period, the cumulative effect of the changes on current and prior periods based on a contract’s percent complete. A significant change in one or more of these estimates could affect the profitability of one or more of the Company’s contracts. If a loss is indicated at a point in time during a contract, a projected loss for the entire contract is estimated and recognized.

In 2012, Foley Company (Foley) experienced cost overruns in excess of estimated costs on several large projects. Estimated costs on certain projects in excess of previous period estimates resulted in pretax charges of $14.9 million in 2012 compared with $7.0 million in 2011. All of these projects were substantially completed as of December 31, 2012.

Plastics operating revenues are recorded when the product is shipped.

Warranty Reserves

The Company establishes reserves for estimated product warranty costs at the time revenue is recognized based on historical warranty experience and additionally for any known product warranty issues. Certain Company products carry one to fifteen year warranties. Although the Company engages in extensive product quality programs and processes, the Company’s warranty obligations have been and may in the future be affected by product failure rates, repair or field replacement costs and additional development costs incurred in correcting product failures.

(in thousands)
Warranty Reserve Balance, December 31, 2011	$	3,170
Provision for Warranties Used During the Year		3,240
Less Settlements Made During the Year		(1,342	)
Decrease in Warranty Estimates for Prior Years		(41	)
Warranty Reserve Balance, December 31, 2012	$	5,027

The warranty reserve balance as of December 31, 2012 relates entirely to products produced by DMI and ShoreMaster and is included in liabilities of discontinued operations. Expenses associated with remediation activities of DMI could be substantial. Although the assets of DMI and ShoreMaster have been sold and DMI’s and ShoreMaster’s operating results are reported under discontinued operations in the Company’s consolidated statements of income, the Company retains responsibility for warranty claims related to the products produced by DMI and ShoreMaster prior to the sales of these entities. For DMI’s wind towers, the potential exists for multiple claims based on one defect repeated throughout the production process or for claims where the cost to repair or replace the defective part is highly disproportionate to the original cost of the part. If the Company is required to cover remediation expenses in addition to regular warranty coverage, the Company could be required to accrue additional expenses and experience additional unplanned cash expenditures which could adversely affect the Company’s consolidated results of operations and financial condition.

Retainage

Accounts Receivable include the following amounts, billed under contracts by the Company’s subsidiaries, that have been retained by customers pending project completion:

	December 31,		December 31,
(in thousands)	2012		2011
Accounts Receivable Retained by Customers	$	12,227	$	13,075

Shipping and Handling Costs

The Company includes revenues received for shipping and handling in operating revenues. Expenses paid for shipping and handling are recorded as part of cost of goods sold.

Use of Estimates

The Company uses estimates based on the best information available in recording transactions and balances resulting from business operations. Estimates are used for such items as depreciable lives, asset impairment evaluations, tax provisions, collectability of trade accounts receivable, self-insurance programs, unbilled electric revenues, valuations of forward energy contracts, percentage-of-completion, warranty reserves and actuarially determined benefits costs and liabilities. As better information becomes available (or actual amounts are known), the recorded estimates are revised. Consequently, operating results can be affected by revisions to prior accounting estimates.

Cash Equivalents

The Company considers all highly liquid debt instruments purchased with maturity of 90 days or less to be cash equivalents.

Investments

The following table provides a breakdown of the Company’s investments at December 31, 2012 and 2011:

	December 31,			December 31,
(in thousands)	2012			2011
Cost Method:
Portion of IPH Sales Proceeds Held in Escrow Account 1	$	1,500		$	3,001
Economic Development Loan Pools		255			320
Other		174			206
Equity Method:
Affordable Housing and Other Partnerships		117			276
Marketable Securities Classified as Available-for-Sale		8,925			8,790
Total Investments	$	10,971		$	12,593
Less: IPH Escrow Funds Reported under Other Current Assets 1		(1,500	)		(1,500	)
Investments	$	9,471		$	11,093
1 $I.5 million accessible within one year is classified and reported under other current assets.

The Company’s marketable securities classified as available-for-sale are held for insurance purposes and are reflected at their fair values on December 31, 2012. See further discussion below and under note 13.

Fair Value Measurements

The Company follows ASC 820, Fair Value Measurements and Disclosures, for recurring fair value measurements. ASC 820 provides a single definition of fair value, requires enhanced disclosures about assets and liabilities measured at fair value and establishes a hierarchal framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value. The three levels defined by the hierarchy and examples of each level are as follows:

Level 1 – Quoted prices are available in active markets for identical assets or liabilities as of the reported date. The types of assets and liabilities included in Level 1 are highly liquid and actively traded instruments with quoted prices, such as equities listed by the New York Stock Exchange and commodity derivative contracts listed on the New York Mercantile Exchange.

Level 2 – Pricing inputs are other than quoted prices in active markets, but are either directly or indirectly observable as of the reported date. The types of assets and liabilities included in Level 2 are typically either comparable to actively traded securities or contracts, such as treasury securities with pricing interpolated from recent trades of similar securities, or priced with models using highly observable inputs, such as commodity options priced using observable forward prices and volatilities.

Level 3 – Significant inputs to pricing have little or no observability as of the reporting date. The types of assets and liabilities included in Level 3 are those with inputs requiring significant management judgment or estimation and may include complex and subjective models and forecasts.

Fair values for OTP’s forward energy contracts with delivery points that are not at an active trading hub included in Level 3 of the fair value hierarchy in the table below as of December 31, 2012, are based on prices indexed to observable prices at an active trading hub. The range for Level 3 forward electric inputs was $16 to $48 per megawatt-hour. The weighted average price was $35 per megawatt-hour. The level of deviation in the indexed prices of these contracts at their point of physical delivery from the observable prices for similar contracts at an active trading hub resulted in the contracts that were outstanding at both December 31, 2011 and December 31, 2012 being moved from Level 2 to Level 3 of the fair value hierarchy in 2012.

The following table presents changes in Level 3 forward energy contract derivative asset and liability fair valuations for the year ended December 31, 2012, the first year the Company’s forward energy contracts were classified as Level 3 in the fair value hierarchy:

(in thousands)	Year ended December 31, 2012
Forward Energy Contracts - Fair Values Beginning of Year	$	--
Transfers into Level 3 from Level 2		(15,884	)
Less: Amounts Reversed on Settlement of Contracts Entered into in Prior Periods		5,135
Changes in Fair Value of Contracts Entered into in Prior Periods		(4,001	)
Cumulative Fair Value Adjustments of Contracts Entered into in Prior Years at End of Period		(14,750	)
Net Losses Recognized as Regulatory Assets on contract entered into in 2012		(3,032	)
Forward Energy Contracts - Net Derivative Liability Fair Values End of Year	$	(17,782	)

All Level 3 forward energy contracts in the table below are related to power purchase contracts where OTP intends to take physical delivery of the energy under the contract. When OTP takes physical delivery of the energy purchased under these contracts the costs incurred will be recovered in base rates and through fuel clause adjustments. Any derivative assets or liabilities and related gains or losses recorded as a result of the fair valuation of these power purchase contracts will not be realized and are 100% offset by regulatory liabilities and assets related to fuel clause adjustment treatment of fuel costs. Therefore, the net impact of any recorded fair valuation gains or losses related to these contracts on the Company’s consolidated net income is $0 and the net income impact of any future fair valuation adjustments of these contracts will be $0. When energy is delivered under these contracts, they will be settled at the original contract price and any fair valuation gains or losses and related derivative assets or liabilities recorded over the life of the contracts will be reversed along with any offsetting regulatory liabilities or assets. Because of regulatory accounting treatment, any price volatility related to the fair valuation of these contracts had no impact on the Company’s reported consolidated net income for 2012, 2011 or 2010.

The following table presents, for each of these hierarchy levels, the Company’s assets and liabilities that are measured at fair value on a recurring basis as of December 31:

2012 (in thousands)	Level 1		Level 2		Level 3
Assets:
Current Assets – Other:
Forward Energy Contracts	$	--	$	292	$	210
Forward Gasoline Purchase Contracts				136
Money Market Fund - Escrow Account IPH Sale		1,500
Money Market and Mutual Funds - Nonqualified Retirement Savings Plan		110
Investments:
Corporate Debt Securities – Held by Captive Insurance Company				7,620
U.S. Government Debt Securities – Held by Captive Insurance Company				1,305
Other Assets:
Money Market and Mutual Funds - Nonqualified Retirement Savings Plan		357
Equity Securities - Nonqualified Retirement Savings Plan		125
Total Assets	$	2,092	$	9,353	$	210
Liabilities:
Derivative Liabilities - Forward Energy Contracts	$	--	$	242	$	17,992
Total Liabilities	$	--	$	242	$	17,992
In 2012, the Company’s investments in forward gasoline contracts and U.S. government debt securities were moved to level 2 of the fair value hierarchy.

2011 (in thousands)	Level 1		Level 2		Level 3
Assets:
Current Assets – Other:
Forward Energy Contracts	$	--	$	3,803
Forward Gasoline Purchase Contracts		9
Money Market Fund - Escrow Account IPH Sale		1,500
Money Market and Mutual Funds - Nonqualified Retirement Savings Plan		110
Investments:
Corporate Debt Securities – Held by Captive Insurance Company				8,083
U.S. Government Debt Securities – Held by Captive Insurance Company		707
Money Market Fund - Escrow Account IPH Sale		1,501
Other Assets:
Money Market and Mutual Funds - Nonqualified Retirement Savings Plan		254
Total Assets	$	4,081	$	11,886
Liabilities:
Derivative Liabilities - Forward Energy Contracts	$	--	$	18,770
Total Liabilities	$	--	$	18,770

Inventories

The Electric segment inventories are reported at average cost. All other segments’ inventories are stated at the lower of cost (first-in, first-out) or market. Inventories consist of the following:

	December 31,		December 31,
(in thousands)	2012		2011
Finished Goods	$	21,893	$	18,478
Work in Process		8,800		10,470
Raw Material, Fuel and Supplies		38,643		39,795
Total Inventories	$	69,336	$	68,743

Goodwill and Other Intangible Assets

The Company accounts for goodwill and other intangible assets in accordance with the requirements of ASC 350, Intangibles—Goodwill and Other, measuring its goodwill and indefinite-lived intangible assets for impairment annually in the fourth quarter, and more often when events indicate the assets may be impaired. Intangible assets with finite lives are amortized over their estimated useful lives and reviewed for impairment in accordance with requirements under ASC 360-10-35, Property, Plant, and Equipment—Overall—Subsequent Measurement .

In the fourth quarter of 2012 the Company sold Moorhead Electric, Inc. (MEI), a subsidiary company that provided electrical contracting services. In connection with this sale, the Company disposed of $147,000 in goodwill associated with the purchase of MEI in 1992.

The following tables summarize changes to goodwill by business segment during 2012 and 2011:

(in thousands)	Gross Balance December 31, 2011		Accumulated Impairments			Balance (net of impairments) December 31, 2011		Adjustments to Goodwill in 2012			Balance (net of impairments) December 31, 2012
Electric	$	240	$	(240	)	$	--	$	--		$	--
Manufacturing		24,445		(12,259	)		12,186		--			12,186
Construction		7,630		--			7,630		(147	)		7,483
Plastics		19,302		--			19,302		--			19,302
Total	$	51,617	$	(12,499	)	$	39,118	$	(147	)	$	38,971

(in thousands)	Gross Balance December 31, 2010		Accumulated Impairments			Balance (net of impairments) December 31, 2010		Adjustments to Goodwill in 2011		Balance (net of impairments) December 31, 2011
Electric	$	240	$	(240	)	$	--	$	--	$	--
Manufacturing		24,445		(12,259	)		12,186		--		12,186
Construction		7,630		--			7,630		--		7,630
Plastics		19,302		--			19,302		--		19,302
Total	$	51,617	$	(12,499	)	$	39,118	$	--	$	39,118

Other Intangible Assets

The following table summarizes the components of the Company’s intangible assets at December 31:

2012 (in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Carrying Amount		Amortization Periods
Amortizable Intangible Assets:
Customer Relationships	$	16,811	$	4,085	$	12,726	15 – 25 years
Other Intangible Assets Including Contracts		1,092		613		479	5 – 30 years
Total	$	17,903	$	4,698	$	13,205
Indefinite-Lived Intangible Assets:
Trade Name	$	1,100		--	$	1,100

2011 (in thousands)
Amortizable Intangible Assets:
Customer Relationships	$	16,811	$	3,236	$	13,575	15 – 25 years
Covenants Not to Compete		713		709		4	3 – 5 years
Other Intangible Assets Including Contracts		1,092		485		607	5 – 30 years
Total	$	18,616	$	4,430	$	14,186
Indefinite-Lived Intangible Assets:
Trade Name	$	1,100		--	$	1,100

The amortization expense for these intangible assets was:

(in thousands)		2012				2011				2010
Amortization Expense – Intangible Assets		$	981			$	956			$	895

The estimated annual amortization expense for these intangible assets for the next five years is:

(in thousands)		2013				2014				2015				2016				2017
Estimated Amortization Expense – Intangible Assets		$	977			$	977			$	977			$	945			$	849

Supplemental Disclosures of Cash Flow Information

	As of December, 31
(in thousands)	2012		2011
Noncash Investing Activities:
Accounts Payable Outstanding Related to Capital Additions 1	$	9,967	$	20,521
1 Amounts are included in cash used for capital expenditures in subsequent periods when payables are settled.

(in thousands)	2012			2011			2010
Cash Paid During the Year for:
Interest (net of amount capitalized)	$	30,741		$	34,434		$	33,094
Income Tax Refunds	$	(353	)	$	(257	)	$	(54,346	)

Reclassifications and Changes to Presentation

The Company’s consolidated balance sheet as of December 31, 2011 and consolidated income statement and consolidated statement of cash flows for the years ended December 31, 2011 and 2010 reflect the reclassifications of the assets and liabilities, operating results and cash flows of DMI and ShoreMaster to discontinued operations as a result of the sale of DMI’s fixed assets in 2012 and the sale of ShoreMaster on February 8, 2013. As of December 31, 2012 the Company met the criteria of assets held for sale under ASC 360-10-45 for the ShoreMaster transaction and appropriately classified the assets as held for sale on December 31, 2012. Accordingly, ShoreMaster’s activities were required to be reported in discontinued operations as required under ASC 205-20-45. The reclassifications had no impact on the Company’s total consolidated assets, consolidated net income or cash flows as of and for the years ended December 31, 2011 and 2010.

In 2011 management reported Minnesota Conservation Improvement Program (MNCIP) incentives in Operating Revenues – Electric rather than Other Income as they had been classified in 2010. The Company has corrected this classification resulting in the following increase in Operating Revenues and Operating Income and decrease in Other Income:

(in thousands)		2010
MNCIP Incentives reclassified from Other Income to Operating Revenue		$	4,066

The correction had no impact on the Company’s net income, total assets, or operating cash flows for the year ended December 31, 2010.

New Accounting Standards

ASU 2013-02

In February 2013, the FASB issued ASU 2013-02, “Comprehensive Income (Topic 220): Reporting of Amounts Reclassified out of Accumulated Other Comprehensive Income,” which requires entities to provide information about the amounts reclassified out of accumulated other comprehensive income by component. In addition, entities are required to present, either on the face of the statement where net income is presented or in the notes, significant amounts reclassified out of accumulated other comprehensive income by the respective line items of net income but only if the amount reclassified is required under U.S. GAAP to be reclassified to net income in its entirety in the same reporting period. For other amounts that are not required under U.S. GAAP to be reclassified in their entirety to net income, entities are required to cross-reference to other disclosures required under U.S. GAAP that provide additional detail on these amounts. This ASU is effective prospectively for reporting periods beginning after December 15, 2012. The Company is currently evaluating the impact of adopting this guidance.

2. Business Combinations, Dispositions and Segment Information

The Company acquired no new businesses in 2012, 2011 or 2010 and disposed of no businesses in 2010.

In 2012 and 2011, in execution of the Company’s announced strategy of realigning its business portfolio to reduce its risk profile and dedicate a greater portion of its resources toward electric utility operations, the Company sold or was in the process of selling several of its holdings. On December 31, 2012 the Company was in negotiations to sell the assets of ShoreMaster, its waterfront equipment manufacturer, which was included in its Manufacturing segment. ShoreMaster’s assets met the criteria to be classified as held for sale and reported in discontinued operations on December 31, 2012. The sale of substantially all of ShoreMaster’s assets closed on February 8, 2013. On November 30, 2012 the Company completed the sale of the fixed assets of DMI, its wind tower manufacturing company, eliminating its Wind Energy segment. On February 29, 2012 the Company completed the sale of DMS Health Technologies, Inc. (DMS), its health services company, eliminating its Health Services segment. On January 18, 2012, the Company sold the assets of Aviva Sports, Inc. (Aviva), a wholly owned subsidiary of ShoreMaster that sold various recreational products. In 2011, the Company sold IPH, its food ingredient processing business, eliminating its Food Ingredient Processing segment, and E.W. Wylie (Wylie), its trucking company, which was included in its Wind Energy segment.

The results of operations of ShoreMaster including Aviva, DMI, DMS, Wylie and IPH are reported as discontinued operations in the Company’s consolidated financial statements as of and for the years ended December 31, 2012, 2011 and 2010, and are summarized in note 17 to consolidated financial statements.

Segment Information

The accounting policies of the segments are described under note 1 – Summary of Significant Accounting Policies. As a result of the 2011, 2012 and 2013 dispositions, the Company’s business structure now includes the following four segments: Electric, Manufacturing, Construction and Plastics. The chart below indicates the companies included in each segment.

Electric includes the production, transmission, distribution and sale of electric energy in Minnesota, North Dakota and South Dakota by OTP. In addition, OTP is an active wholesale participant in the Midwest Independent Transmission System Operator (MISO) markets. OTP’s operations have been the Company’s primary business since 1907. Additionally, the electric segment includes OTESCO, which provides technical and engineering services.

Plastics consists of businesses producing polyvinyl chloride (PVC) pipe in the upper Midwest and Southwest regions of the United States.

OTP and OTESCO are wholly owned subsidiaries of the Company. All of the Company’s other businesses are owned by its wholly owned subsidiary, Varistar Corporation (Varistar).

No single customer accounted for over 10% of the Company’s consolidated revenues in 2012, 2011 or 2010. All of the Company’s long-lived assets are within the United States.

Percent of Sales Revenue by Country for the Year Ended December 31:	2012	2011	2010
United States of America	97.7%	98.1%	99.0%
Canada	1.1%	1.4%	0.8%
All Other Countries	1.2%	0.5%	0.2%

The Company evaluates the performance of its business segments and allocates resources to them based on earnings contribution and return on total invested capital. Substantially all the revenues reported below by segment are from sales to external customers, except for immaterial amounts reported in intersegment eliminations, which are insignificant in total and by segment. Information on continuing operations for the business segments for 2012, 2011 and 2010, which now excludes Wind Energy due to the sale of DMI and its inclusion in discontinued operations, and includes restated amounts for the Manufacturing segment due to the sale of ShoreMaster and its inclusion in discontinued operations, is presented in the following table:

(in thousands)	2012			2011			2010
Operating Revenue
Electric	$	350,765		$	342,727		$	344,379
Manufacturing		208,965			189,459			143,072
Construction		149,092			184,657			134,222
Plastics		150,517			123,669			96,945
Intersegment Eliminations		(100	)		(343	)		(721	)
Total	$	859,239		$	840,169		$	717,897
Depreciation and Amortization
Electric	$	42,051		$	40,283		$	40,241
Manufacturing		12,208			12,116			11,430
Construction		1,906			2,009			2,023
Plastics		3,118			3,377			3,430
Corporate		481			550			523
Total	$	59,764		$	58,335		$	57,647
Interest Charges
Electric	$	19,049		$	19,643		$	20,949
Manufacturing		3,557			3,727			3,625
Construction		1,039			947			671
Plastics		2,519			1,525			1,560
Corporate and Intersegment Eliminations		5,741			9,787			10,043
Total	$	31,905		$	35,629		$	36,848
Income (Loss) Before Income Taxes
Electric	$	44,203		$	45,569		$	44,505
Manufacturing		17,630			12,191			7,548
Construction		(13,145	)		(3,688	)		(1,115	)
Plastics		23,506			9,464			4,007
Corporate		(31,093	)		(24,505	)		(25,434	)
Total	$	41,101		$	39,031		$	29,511
Earnings (Loss) Available for Common Shares
Electric	$	38,341		$	38,886		$	34,557
Manufacturing		10,676			8,229			5,115
Construction		(7,689	)		(2,204	)		(646	)
Plastics		14,113			5,811			2,515
Corporate		(17,209	)		(16,548	)		(15,996	)
Discontinued Operations		(44,241	)		(48,475	)		(27,722	)
Total	$	(6,009	)	$	(14,301	)	$	(2,177	)
Capital Expenditures
Electric	$	101,919		$	49,707		$	43,121
Manufacturing		9,311			10,546			6,159
Construction		1,576			2,645			5,490
Plastics		2,819			2,414			2,671
Corporate		137			2,048			823
Total	$	115,762		$	67,360		$	58,264
Identifiable Assets
Electric	$	1,226,145		$	1,170,449		$	1,106,261
Manufacturing		114,933			124,872			112,295
Construction		50,696			69,453			60,978
Plastics		78,855			72,200			73,508
Corporate		112,616			53,619			43,102
Assets of Discontinued Operations		19,092			209,929			374,411
Total	$	1,602,337		$	1,700,522		$	1,770,555

Revised Segments Information by Quarter (not audited)

The following table provides revised segment information based on the Company’s continuing operations as of December 31, 2012, similar to the tabular information provided in note 2 to financial statements in the Company’s quarterly reports on Form 10-Q.

Three Months Ended	March 31						June 30						September 30						December 31
(in thousands)	2012			2011			2012			2011			2012			2011			2012			2011
Operating Revenue
Electric	$	90,003		$	91,596		$	78,963		$	78,031		$	88,564		$	85,172		$	93,235		$	87,928
Manufacturing		59,434			46,953			53,039			45,178			46,618			47,323			49,874			50,005
Construction		35,617			37,515			37,934			49,133			37,931			53,247			37,610			44,762
Plastics		34,875			18,478			41,490			44,373			42,217			36,231			31,935			24,587
Corporate and Intersegment Eliminations		(39	)		(261	)		(25	)		(38	)		(14	)		(27	)		(22	)		(17	)
Total	$	219,890		$	194,281		$	211,401		$	216,677		$	215,316		$	221,946		$	212,632		$	207,265

Interest Charges
Electric	$	4,851		$	5,088		$	4,762		$	4,990		$	4,880		$	4,796		$	4,556		$	4,769
Manufacturing		915			903			917			941			891			952			834			931
Construction		253			220			310			227			305			251			171			249
Plastics		346			363			346			402			342			411			1,485			349
Corporate and Intersegment Eliminations		2,229			2,769			2,137			2,558			1,486			2,268			(111	)		2,192
Total	$	8,594		$	9,343		$	8,472		$	9,118		$	7,904		$	8,678		$	6,935		$	8,490

Income Tax Expense (Benefit)
Electric	$	1,622		$	2,600		$	(800	)	$	8		$	2,995		$	3,364		$	2,045		$	711
Manufacturing		2,324			1,579			1,674			1,215			1,288			938			1,668			230
Construction		(2,776	)		(210	)		(1,164	)		130			(879	)		(115	)		(637	)		(1,289	)
Plastics		2,175			(241	)		2,722			2,144			2,216			1,295			2,280			455
Corporate		(2,877	)		(1,902	)		(1,915	)		(2,617	)		(6,405	)		(3,373	)		(3,423	)		(801	)
Total	$	468		$	1,826		$	517		$	880		$	(785	)	$	2,109		$	1,933		$	(694	)

Earnings (Loss) Available for Common Shares
Electric	$	11,016		$	11,142		$	5,191		$	7,386		$	10,206		$	10,900		$	11,928		$	9,458
Manufacturing		3,465			2,356			2,501			2,179			1,914			1,571			2,796			2,123
Construction		(4,171	)		(325	)		(1,756	)		184			(1,325	)		(179	)		(437	)		(1,884	)
Plastics		3,253			(374	)		4,067			3,312			3,309			1,970			3,484			903
Corporate		(3,572	)		(2,964	)		(3,286	)		(3,437	)		(9,486	)		(5,355	)		(865	)		(4,792	)
Discontinued Operations		(2,932	)		(4,323	)		(24,257	)		8,698			(2,928	)		(2,723	)		(14,124	)		(50,127	)
Total	$	7,059		$	5,512		$	(17,540	)	$	18,322		$	1,690		$	6,184		$	2,782		$	(44,319	)

Identifiable Assets
Electric	$	1,167,688		$	1,094,549		$	1,168,902		$	1,092,111		$	1,179,472		$	1,101,146		$	1,226,145		$	1,170,449
Manufacturing		133,988			120,161			127,055			125,967			125,747			124,414			114,933			124,872
Construction		67,288			64,500			68,407			65,351			67,342			74,639			50,696			69,453
Plastics		87,066			76,993			87,747			94,035			86,445			84,463			78,855			72,200
Corporate		42,292			46,947			39,222			41,380			38,612			57,262			112,616			53,619
Discontinued Operations		180,796			393,831			143,067			289,303			72,308			270,060			19,092			209,929
Total	$	1,679,118		$	1,796,981		$	1,634,400		$	1,708,147		$	1,569,926		$	1,711,984		$	1,602,337		$	1,700,522

3. Rate and Regulatory Matters

Minnesota

2010 General Rate Case Filing —OTP filed a general rate case on April 2, 2010 requesting an 8.01% base rate increase as well as a 3.8% interim rate increase. On May 27, 2010, the Minnesota Public Utilities Commission (MPUC) issued an order accepting the filing, suspending rates, and approving the interim rate increase, as requested, to be effective with customer usage on and after June 1, 2010. The MPUC held a hearing to decide on the issues in the rate case on March 25, 2011 and issued a written order on April 25, 2011. The MPUC authorized a revenue increase of approximately $5.0 million, or 3.76% in base rate revenues, excluding the effect of moving recovery of wind investments to base rates. The MPUC’s written order included: (1) recovery of Big Stone II costs over five years, (2) moving recovery of wind farm assets from rider recovery to base rate recovery, (3) transfer of a portion of MNCIP costs from rider recovery to base rate recovery, (4) transfer of the investment in two transmission lines from rider recovery to base rate recovery, and (5) changing the mechanism for providing customers with a credit for margins earned on asset-based wholesale sales of electricity from a credit to base rates to a credit to the Minnesota Fuel Clause Adjustment. Final rates went into effect October 1, 2011. The overall increase to customers was approximately 1.6% compared to the authorized interim rate increase of 3.8%, which resulted in an interim rate refund to Minnesota retail electric customers of approximately $3.9 million in the fourth quarter of 2011. Pursuant to the order, OTP’s allowed rate of return on rate base increased from 8.33% to 8.61% and its allowed rate of return on equity increased from 10.43% to 10.74%. OTP’s authorized rates of return are based on a capital structure of 48.28% long term debt and 51.72% common equity.

Renewable Energy Standards, Conservation, Renewable Resource Riders —Minnesota has a renewable energy standard which requires OTP to generate or procure sufficient renewable generation such that the following percentages of total retail electric sales to Minnesota customers come from qualifying renewable sources: 12% by 2012; 17% by 2016; 20% by 2020 and 25% by 2025. Under certain circumstances and after consideration of costs and reliability issues, the MPUC may modify or delay implementation of the standards. OTP has acquired renewable resources and expects to acquire additional renewable resources in order to maintain compliance with the Minnesota renewable energy standard. OTP’s compliance with the Minnesota renewable energy standard will be measured through the Midwest Renewable Energy Tracking System.

The MPUC issued an order on January 12, 2010 finding OTP’s Luverne Wind Farm project eligible for cost recovery through the Minnesota Renewable Resource Adjustment (MNRRA). The 2010 annual MNRRA cost recovery filing was made on December 31, 2009. The MPUC approved OTP’s petition for a 2010 MNRRA in the third quarter of 2010 with implementation effective September 1, 2010. The 2010 MNRRA was in place from September 1, 2010 through September 30, 2011 with a recovery of $17.0 million.

The recovery of MNRRA costs was moved to base rates as of October 1, 2011 under the MPUC’s April 25, 2011 general rate case order with the exception of the remaining balance of the MNRRA regulatory asset. OTP has a regulatory asset of $0.9 million for amounts eligible for recovery through the MNRRA rider that have not been billed to Minnesota customers as of December 31, 2012. A request for an updated rate to be effective October 1, 2012 was initially filed on June 28, 2012, followed by a revised filing on July 25, 2012. The filing, which is still under review, included a request to extend the period of the new rate for 18 months, which would reduce the current balance of unrecovered costs to zero. However, OTP now estimates the remaining unrecovered costs will collected by the end of May 2013, so OTP is planning to make a supplemental filing to request that the current rate be retained until the remaining balance is recovered and that the MNRRA then be suspended.

Transmission Cost Recovery (TCR) Rider —In addition to the MNRRA rider, the Minnesota Public Utilities Act provides a similar mechanism for automatic adjustment outside of a general rate proceeding to recover the costs of new transmission facilities that have been previously approved by the MPUC in a Certificate of Need (CON) proceeding, certified by the MPUC as a Minnesota priority transmission project, made to transmit the electricity generated from renewable generation sources ultimately used to provide service to the utility’s retail customers, or exempt from the requirement to obtain a Minnesota CON. Such TCR riders allow a return on investment at the level approved in a utility’s last general rate case. Additionally, following approval of the rate schedule, the MPUC may approve annual rate adjustments filed pursuant to the rate schedule. OTP’s initial request for approval of a TCR rider was granted by the MPUC on January 7, 2010, and became effective February 1, 2010.

OTP requested recovery of its transmission investments being recovered through its Minnesota TCR rider rate as part of its general rate case filed on April 2, 2010. In its April 25, 2011 general rate case order, the MPUC approved the transfer of transmission costs currently being recovered through OTP’s Minnesota TCR rider to recovery in base rates. Final rates went into effect on October 1, 2011. The Company will continue to utilize the rider cost recovery mechanism until the remaining balance of the current transmission projects has been collected as well as to recover costs associated with approved regional projects. OTP filed a request for an update to its Minnesota TCR rider on October 5, 2010. The update to OTP’s Minnesota TCR rider, approved by the MPUC on March 26, 2012, went into effect April 1, 2012.

In this TCR rider update, the MPUC addressed how to handle utility investments in transmission facilities that qualify for regional cost allocation under the MISO tariff. MISO regional cost allocation allows OTP to recover some of the costs of its transmission investment from the other MISO utilities. On March 26, 2012 the MPUC approved an all-in method for MISO regional cost allocations in which OTP’s retail customers would be responsible for the entire investment OTP made with an offsetting credit for revenues received from other MISO utilities under the MISO tariff.

On May 24, 2012 OTP filed a petition with the MPUC to seek a determination of eligibility for the inclusion of twelve additional transmission related projects in subsequent Minnesota TCR rider filings. On August 22, 2012 the Minnesota Department of Commerce (MNDOC) filed comments and on August 24, 2012 the Minnesota Office of the Attorney General (MNOAG) filed comments. OTP filed reply comments on September 25, 2012 and supplemental comments on January 8, 2013 describing an agreement reached between OTP, the MNDOC and the MNOAG, to find eligible 3 of the 12 projects. MPUC approval of that agreement is pending. If approval is obtained to include additional projects in the rider, investment in the approved projects will be included in the next annual Minnesota TCR rider rate update filings and recovery of the investment will begin through the TCR rider rates if subsequently approved by the MPUC. Updated costs associated with existing projects within the Minnesota TCR rider will also be included in the next annual rider rate update filing. OTP has a regulatory liability of $0.5 million as of December 31, 2012 for amounts billed to Minnesota customers that are subject to refund through the Minnesota TCR rider.

In 2010, OTP recognized $3.7 million in financial incentives relating to 2010, but reduced that amount by $0.2 million in the fourth quarter of 2011. A written order was issued by the MPUC on January 11, 2012 approving the recovery of $3.5 million for the 2010 MNCIP financial incentives. Beginning in January 2012, OTP’s MNCIP Conservation Cost Recovery Adjustment (CCRA) increased from 3.0% to 3.8% for all Minnesota retail electric customers.

OTP recognized $2.2 million in MNCIP financial incentives in 2011 relating to 2011 program results. On March 30, 2012 OTP submitted its annual 2011 financial incentive filing request for $2.6 million and recognized an additional $0.4 million of incentive related to 2011 in 2012. In December 2012, the MPUC approved the recovery of $2.6 million in financial incentives for 2011 and also ordered a change in the MNCIP cost recovery methodology used by OTP from a percentage of a customer’s bill to an amount per kwh consumed. The written order was issued on December 10, 2012. On January 1, 2013 OTP’s MNCIP surcharge decreased from 3.8% of the customer’s bill to $0.00142 per kwh , which equates to approximately 1.9% of a customer’s bill . The per-kwh cost allocation method is the principle method approved by the MPUC for other electric utilities in Minnesota. OTP recognized $2.6 million of MNCIP financial incentives in 2012 relating to 2012 program results.

OTP has a regulatory asset of $6.1 million for allowable costs and financial incentives that are eligible for recovery through the MNCIP rider that have not been billed to Minnesota customers as of December 31, 2012. OTP’s Minnesota conservation recoverable costs and incentives totaled $7.8 million in 2012, $8.0 million in 2011 and $8.6 million in 2010.

North Dakota

General Rate Case —On November 3, 2008 OTP filed a general rate case in North Dakota requesting an overall revenue increase of approximately $6.1 million, or 5.1%, and an interim rate increase of approximately 4.1%, or $4.8 million annualized, that went into effect on January 2, 2009. In an order issued by the North Dakota Public Service Commission (NDPSC) on November 25, 2009, OTP was granted an increase in North Dakota retail electric rates of $3.6 million, or approximately 3.0%, which went into effect in December 2009. The NDPSC order authorizing an interim rate increase required OTP to refund North Dakota customers the difference between final and interim rates, with interest. OTP established a refund reserve for revenues collected under interim rates that exceeded the final rate increase. The refund reserve balance of $0.9 million as of December 31, 2009 was refunded to North Dakota customers in January 2010. OTP deferred recognition of $0.5 million in rate case-related filing and administrative costs that are subject to amortization and recovery over a three year period beginning in January 2010. As required by the NDPSC order in the OTP 2008 rate case, OTP submitted a filing for a request to remove the recovery of the costs associated with economic development in base rates in North Dakota. OTP proposed and the NDPSC approved an Economic Development Cost Removal Rider, under which all North Dakota customers will receive a credit of $0.00025 per kwh. The monthly credit was effective with bills rendered on and after January 1, 2011.

Transmission Cost Recovery Rider —North Dakota law provides a mechanism for automatic adjustment outside of a general rate proceeding to recover jurisdictional capital and operating costs incurred by a public utility for new or modified electric transmission facilities. OTP filed a request for an initial North Dakota TCR rider with the NDPSC on April 29, 2011, which was approved by the NDPSC on April 25, 2012 to go into effect May 1, 2012. On August 31, 2012 OTP filed its annual update to the North Dakota TCR rider rate to reflect updated cost information associated with projects currently in the rider, as well as proposing to include costs associated with ten additional projects for recovery within the rider, which the NDPSC approved on December 12, 2012 to go into effect January 1, 2013. OTP has a regulatory asset of $0.1 million for amounts eligible for recovery through the North Dakota TCR rider that have not been billed to North Dakota customers as of December 31, 2012.

South Dakota

2010 General Rate Case Filing —On August 20, 2010 OTP filed a general rate case with the South Dakota Public Utilities Commission (SDPUC) requesting an overall revenue increase of approximately $2.8 million, or just under 10.0%, which includes, among other things, recovery of investments and expenses related to renewable resources. On September 28, 2010 the SDPUC suspended OTP’s proposed rates for a period of 180 days to allow time to review OTP’s proposal. On January 19, 2011 OTP submitted a proposal to use current rate design to implement an interim rate in South Dakota to be effective on and after February 17, 2011. On January 26, 2011 OTP submitted an amended proposal to use a lower interim rate increase than originally proposed. At its February 1, 2011 meeting, the SDPUC approved OTP’s request to implement interim rates using current rate design and the lower interim increase to be effective on and after February 17, 2011. On April 21, 2011, the SDPUC issued its written order approving an overall final revenue increase of approximately $643,000 (2.32%) and an overall rate of return on rate base of 8.50% for the interim rates and final rates. Final rates were effective with bills rendered on and after June 1, 2011.

Transmission Cost Recovery Rider —South Dakota law provides a mechanism for automatic adjustment outside of a general rate proceeding to recover jurisdictional capital and operating costs incurred by a public utility for new or modified electric transmission facilities. OTP submitted a request for an initial South Dakota TCR rider to the SDPUC on November 5, 2010. The South Dakota TCR was approved by the SDPUC and implemented on December 1, 2011. OTP billed $570,000 to South Dakota customers under the TCR rider from December 1, 2011 through December 31, 2012 and had a regulatory asset of $2,000 for amounts eligible for recovery through the South Dakota TCR rider that had not been billed to South Dakota customers as of December 31, 2012. On September 4, 2012 OTP filed its annual update to the South Dakota TCR rider rate. The request is currently under review by the SDPUC.

Energy Efficiency Plan —The SDPUC has encouraged all investor-owned utilities in South Dakota to be part of an Energy Efficiency Partnership to significantly reduce energy use. The plan is being implemented with program costs, carrying costs and a financial incentive being recovered through an approved rider.

On April 29, 2011 OTP filed a request with the SDPUC for approval of a 2010 financial incentive of $73,415 and a surcharge adjustment of $0.00063 on South Dakota customers’ bills. On May 25, 2011 OTP filed a request with the SDPUC for approval of updates to its 2012–2013 South Dakota Energy Efficiency Plan. The SDPUC approved the 2012–2013 plan with a maximum available incentive payment limited to 30% of the budget amount provided in the plan, or $84,000.

Federal

Effective January 1, 2010, the FERC authorized OTP’s implementation of a forward looking formula transmission rate under the MISO Open Access Transmission, Energy and Operating Reserve Markets Tariff (MISO Tariff). OTP was also authorized by the FERC to recover in its formula rate: (1) 100% of prudently incurred Construction Work in Progress (CWIP) in rate base and (2) 100% of prudently incurred costs of transmission facilities that are cancelled or abandoned for reasons beyond OTP’s control (Abandoned Plant Recovery), as determined by the FERC subsequent to abandonment, specifically for three regional transmission CapX2020 projects that OTP is investing in, including the Fargo Project, Bemidji Project and Brookings Project.

On December 16, 2010, FERC approved the cost allocation for a new classification of projects in MISO called Multi-Value Projects (MVP). MVPs are designed to enable the region to comply with energy policy mandates and to address reliability and economic issues affecting multiple transmission zones within the MISO region. The cost allocation is designed to ensure that the costs of transmission projects with regional benefits are properly assigned to those who benefit. On October 20, 2011 the FERC reaffirmed the MVP cost allocation on rehearing. The MVP cost allocation is currently being challenged at the United States Court of Appeals, Seventh Circuit.

Effective January 1, 2012, the FERC authorized OTP to recover 100% CWIP and Abandoned Plant Recovery on two projects approved by MISO as MVPs in MISO’s 2011 Transmission Expansion Plan: the Big Stone South – Brookings MVP and the Ellendale – Big Stone South MVP.

The Big Stone South – Brookings Project —OTP is jointly developing this project with Xcel Energy. MISO approved this project as an MVP under the MISO Tariff in December 2011. A Notice of Intent to Construct Facilities (NICF) was filed with the SDPUC on February 29, 2012. A portion of this line is anticipated to use previously obtained Big Stone II transmission route permits and easements and is expected to be in service in 2017. On July 31, 2012 the SDPUC approved the transfer of the Big Stone II transmission route permits to OTP. In December 2012, a request was filed with the SDPUC for recertification of a portion of the line route that was approved as part of the Big Stone II transmission development. OTP and Xcel Energy expect to make a joint route permit filing in the second quarter of 2013 for the remaining portion of the project.

The Ellendale – Big Stone South Project —OTP is jointly developing this project with Montana-Dakota Utilities Co., a Division of MDU Resources Group, Inc. (MDU). MISO approved this project as an MVP under the MISO Tariff in December 2011. OTP and MDU jointly filed an NICF with the SDPUC in March of 2012. This project will require regulatory approval from both the SDPUC and the NDPSC. Route permits are expected to be filed with the respective commissions in the third quarter of 2013.

Capacity Expansion 2020 (CapX2020)

CapX2020 is a joint initiative of eleven investor-owned, cooperative, and municipal utilities in Minnesota and the surrounding region to upgrade and expand the electric transmission grid to ensure continued reliable and affordable service. The CapX2020 companies identified four major transmission projects for the region: (1) the Fargo–Monticello 345 kiloVolt (kV) Project (the Fargo Project), (2) the Brookings–Southeast Twin Cities 345 kV Project (the Brookings Project), (3) the Bemidji–Grand Rapids 230 kV Project (the Bemidji Project), and (4) the Twin Cities–LaCrosse 345 kV Project. OTP is an investor in the Fargo Project, the Brookings Project and the Bemidji Project. Recovery of OTP’s CapX2020 transmission investments will be through the MISO Tariff (the Brookings Project as an MVP) and Minnesota, North Dakota and South Dakota TCR Riders.

The Fargo Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of the Fargo Project. The Monticello to St. Cloud portion of the Fargo Project was placed into service on December 21, 2011. Completion of all phases of the Fargo Project is scheduled for the first quarter of 2015.

The Brookings Project —All major permits have been received from state regulatory bodies and project agreements have been signed for the construction of the Brookings Project. The MISO granted unconditional approval of the Brookings Project as an MVP under the MISO Tariff in December 2011. This project will be placed in service in segments with the earliest segment being placed in service in the summer of 2013 and the last segment placed in service during the first quarter of 2015.

The Bemidji Project —The Bemidji-Grand Rapids transmission line was fully energized and put into service on September 17, 2012.

Big Stone Air Quality Control System

The South Dakota Department of Environment and Natural Resources (DENR) determined that the Big Stone Plant is subject to Best Available Retrofit Technology (BART) requirements of the Clean Air Act (CAA), based on air dispersion modeling indicating that Big Stone’s emissions reasonably contribute to visibility impairment in national parks and wilderness areas in Minnesota, North Dakota, South Dakota and Michigan. Under the U.S. Environmental Protection Agency’s (EPA) regional haze regulations, South Dakota developed and submitted its implementation plan and associated implementation rules to the EPA on January 21, 2011. The DENR and EPA have agreed on non-substantive rule revisions, which were adopted by the Board of Minerals and Environment and became effective on September 19, 2011.

South Dakota developed and submitted its revised implementation plan and associated implementation rules to EPA on September 19, 2011. Under the South Dakota implementation plan, and its implementing rules, the Big Stone Plant must install and operate a new BART compliant air quality control system to reduce emissions as expeditiously as practicable, but no later than five years after the EPA’s approval of South Dakota’s implementation plan. On March 29, 2012 the EPA took final action to approve South Dakota’s Regional Haze State Implementation Plan (SIP), finding that South Dakota’s SIP submittal met all applicable regional haze regulations. The EPA’s final approval of the SIP was effective on May 29, 2012.

On January 14, 2011 OTP filed a petition asking the MPUC for ADP for the design, construction and operation of the BART compliant air quality control system at Big Stone Plant attributable to serving OTP’s Minnesota customers. On December 20, 2011 the MPUC granted OTP’s petition for ADP for the Big Stone Plant Air Quality Control System (AQCS). The MPUC written order was issued on January 23, 2012.

An application for an ADP filed by OTP with the NDPSC on May 20, 2011 was approved on May 9, 2012.

On March 30, 2012 OTP requested approval from the SDPUC for an ECRR to recover costs associated with the Big Stone Plant AQCS, with a proposed effective date of October 1, 2012. Information requests for this filing continue and OTP is currently awaiting SDPUC action. This rider is designed to recover the revenue requirements plus carrying charges of the Big Stone AQCS project while under construction as well as after completion of the project until placed into base rates through the filing of a rate case. For the initial period of October 1, 2012 through September 30, 2013, OTP is requesting revenue requirement recovery on expenditures incurred for the Big Stone Plant AQCS. The request is currently under review by the SDPUC.

Big Stone II Project

On June 30, 2005 OTP and a coalition of six other electric providers entered into several agreements for the development of a second electric generating unit, named Big Stone II, at the site of the existing Big Stone Plant near Milbank, South Dakota. On September 11, 2009 OTP announced its withdrawal—both as a participating utility and as the project’s lead developer—from Big Stone II. On November 2, 2009, the remaining Big Stone II participants announced the cancellation of the Big Stone II project.

Minnesota —OTP requested recovery of the Minnesota portion of its Big Stone II development costs over a five-year period as part of its general rate case filed in Minnesota on April 2, 2010. In a written order issued on April 25, 2011, the MPUC authorized recovery of the Minnesota portion of Big Stone II generation development costs from Minnesota ratepayers over a 60-month recovery period which began on October 1, 2011. The amount of Big Stone II generation costs incurred by OTP that were deemed recoverable from Minnesota ratepayers was $3,199,000 (which excluded $3,246,000 of project transmission-related costs). Because OTP will not earn a return on these deferred costs over the 60-month recovery period, the recoverable amount of $3,199,000 was discounted to its present value of $2,758,000 using OTP’s incremental borrowing rate, in accordance with ASC 980, Regulated Operations , accounting requirements.

On December 30, 2010 OTP filed a request for an extension of the Minnesota Route Permit for the Big Stone II transmission facilities. The request asks to extend the deadline for filing a CON for these transmission facilities until March 17, 2013. The April 25, 2011 MPUC order instructed OTP to transfer the $3,246,000 Minnesota share of Big Stone II transmission costs to CWIP and to create a tracker account through which any over or under recoveries could be accumulated for refund or recovery determination in future rate cases as a regulatory liability or asset. If determined eligible for recovery under the FERC-approved MISO regional transmission tariff, the Minnesota portion of Big Stone II transmission costs and accumulated Allowance for Funds Used During Construction (AFUDC) will receive rate base treatment and recovery through the FERC-approved MISO regional transmission rates. Any amounts over or under collected through MISO rates will be reflected in the tracker account.

North Dakota —In an order issued June 25, 2010, the NDPSC authorized recovery of Big Stone II development costs from North Dakota ratepayers, pursuant to a final settlement agreement filed June 23, 2010, between the NDPSC advocacy staff, OTP and the North Dakota Large Industrial Energy Group, Interveners. The terms of the settlement agreement indicate that OTP’s discontinuation of participation in the project was prudent and OTP should be authorized to recover the portion of costs it incurred related to the Big Stone II generation project. The total amount of Big Stone II generation costs incurred by OTP (which excluded $2,612,000 of project transmission-related costs) was determined to be $10,080,000, of which $4,064,000 represents North Dakota’s jurisdictional share.

OTP is including in its total recovery amount a carrying charge of approximately $285,000 on the North Dakota share of Big Stone II generation costs for the period from September 1, 2009 through the date the recovery of costs begins based on OTP’s average 2009 AFUDC rate of 7.65%. Because OTP will not earn a return on these deferred costs over the 36-month recovery period, the recoverable amount of $4,349,000 was discounted to its present value of $3,913,000 using OTP’s incremental borrowing rate, in accordance with ASC 980 accounting requirements. The North Dakota portion of Big Stone II generation costs is being recovered over a 36-month period which began on August 1, 2010.

The North Dakota jurisdictional share of Big Stone II costs incurred by OTP related to transmission is $1,053,000. OTP transferred the North Dakota share of Big Stone II transmission costs to CWIP, with such costs subject to AFUDC continuing from September 2009. If construction of all or a portion of the transmission facilities commences within three years of the NDPSC order approving the settlement agreement, the North Dakota portion of Big Stone II transmission costs and accumulated AFUDC shall be included in the rate base investment for these future transmission facilities. If construction is not commenced on any of the transmission facilities within three years of the NDPSC order approving the settlement agreement, OTP may petition the NDPSC to either continue accounting for these costs as CWIP or to commence recovery of such costs.

South Dakota —OTP requested recovery of the South Dakota portion of its Big Stone II development costs over a five-year period as part of its general rate case filed in South Dakota on August 20, 2010. In the first quarter of 2011, the SDPUC approved recovery of the South Dakota portion of Big Stone II generation development costs totaling approximately $1.0 million from South Dakota ratepayers over a ten-year period beginning in February 2011 with the implementation of interim rates. OTP will be allowed to earn a return on the amount subject to recovery over the ten-year recovery period. Therefore, the South Dakota settlement amount is not discounted. OTP transferred the South Dakota portion of the remaining Big Stone II transmission costs to CWIP, with such costs subject to AFUDC and recovery in future FERC-approved MISO rates or retail rates. On July 31, 2012 the SDPUC approved the transfer of the Big Stone II transmission route permits to OTP.

4. Regulatory Assets and Liabilities

As a regulated entity, OTP accounts for the financial effects of regulation in accordance with ASC 980, Regulated Operations . This accounting standard allows for the recording of a regulatory asset or liability for costs that will be collected or refunded in the future as required under regulation. The following regulatory assets reflect incurred costs eligible for recovery in future periods on which the Company will not earn a rate of return: Prior Service Costs and Actuarial Losses on Pensions and Other Postretirement Benefits, the Accumulated ARO Accretion/Depreciation Adjustment, Debt Reacquisition Premiums, Big Stone II Unrecovered Project Costs – Minnesota, Deferred Income Taxes, the MISO Schedule 26 Transmission Cost Recovery Rider True-up, Big Stone II Unrecovered Project Costs – North Dakota, General Rate Case Recoverable Expenses and Deferred Holding Company Formation Costs. Additionally, ASC 980-605-25 provides for the recognition of revenues authorized for recovery outside of a general rate case under alternative revenue programs which provide for recovery of costs and incentives or returns on investment in such items as transmission infrastructure, renewable energy resources or conservation initiatives. The following regulatory assets represent amounts eligible for recovery under alternative revenue programs or on which the Company earns an incentive or rate of return: Conservation Improvement Program Costs and Incentives, North Dakota Renewable Resource Rider Accrued Revenues, Minnesota Renewable Resource Rider Accrued Revenues, Big Stone II Unrecovered Project Costs – South Dakota, North Dakota Transmission Rider Accrued Revenues and South Dakota Transmission Rider Accrued Revenue The following table indicates the amount of regulatory assets and liabilities recorded on the Company’s consolidated balance sheet:

	December 31, 2012						Remaining Recovery/ Refund Period
(in thousands)	Current		Long-Term		Total		Remaining Recovery/ Refund Period
Regulatory Assets:
Prior Service Costs and Actuarial Losses on Pensions and Other Postretirement Benefits	$	8,411	$	109,538	$	117,949	see note
Deferred Marked-to-Market Losses		7,949		10,050		17,999	72 months
Conservation Improvement Program Costs and Incentives		3,707		2,560		6,267	18 months
Accumulated ARO Accretion/Depreciation Adjustment		--		4,137		4,137	asset lives
Debt Reacquisition Premiums		268		1,978		2,246	237 months
Big Stone II Unrecovered Project Costs – Minnesota		526		1,618		2,144	45 months
Recoverable Fuel and Purchased Power Costs		1,737		--		1,737	12 months
Deferred Income Taxes		--		1,691		1,691	asset lives
North Dakota Renewable Resource Rider Accrued Revenues		532		1,087		1,619	15 months
MISO Schedule 26 Transmission Cost Recovery Rider True-up		--		1,352		1,352	see note
Minnesota Renewable Resource Rider Accrued Revenues		915		--		915	5 months
Big Stone II Unrecovered Project Costs – North Dakota		908		--		908	7 months
Big Stone II Unrecovered Project Costs – South Dakota		100		711		811	97 months
General Rate Case Recoverable Expenses		279		6		285	13 months
North Dakota Transmission Rider Accrued Revenues		110		--		110	12 months
Deferred Holding Company Formation Costs		55		27		82	18 months
South Dakota Transmission Rider Accrued Revenue		2		--		2	12 months
Total Regulatory Assets	$	25,499	$	134,755	$	160,254
Regulatory Liabilities:
Accumulated Reserve for Estimated Removal Costs – Net of Salvage	$	--	$	65,960	$	65,960	asset lives
Deferred Income Taxes		--		2,553		2,553	asset lives
Minnesota Transmission Rider Accrued Refund		489		--		489	12 months
Deferred Marked-to-Market Gains		8		210		218	68 months
Deferred Gain on Sale of Utility Property – Minnesota Portion		6		112		118	252 months
South Dakota – Nonasset-Based Margin Sharing Excess		56		--		56	12 months
Total Regulatory Liabilities	$	559	$	68,835	$	69,394
Net Regulatory Asset Position	$	24,940	$	65,920	$	90,860

	December 31, 2011						Remaining Recovery/ Refund Period
(in thousands)	Current		Long-Term		Total		Remaining Recovery/ Refund Period
Regulatory Assets:
Unrecognized Transition Obligation, Prior Service Costs and Actuarial Losses on Pensions and Other Postretirement Benefits	$	6,304	$	96,074	$	102,378	see notes
Deferred Marked-to-Market Losses		5,208		10,749		15,957	44 months
Conservation Improvement Program Costs and Incentives		5,234		2,208		7,442	18 months
Recoverable Fuel and Purchased Power Costs		4,043		--		4,043	12 months
Accumulated ARO Accretion/Depreciation Adjustment		--		3,662		3,662	asset lives
Minnesota Renewable Resource Rider Accrued Revenues		1,461		1,306		2,767	33 months
Big Stone II Unrecovered Project Costs – Minnesota		495		2,144		2,639	57 months
Debt Reacquisition Premiums		280		2,246		2,526	249 months
Deferred Income Taxes		--		2,382		2,382	asset lives
Big Stone II Unrecovered Project Costs – North Dakota		1,340		862		2,202	19 months
North Dakota Renewable Resource Rider Accrued Revenues		785		1,325		2,110	24 months
General Rate Case Recoverable Expenses		721		285		1,006	25 months
Big Stone II Unrecovered Project Costs – South Dakota		100		811		911	109 months
North Dakota Transmission Rider Accrued Revenues		518		--		518	12 months
MISO Schedule 16 and 17 Deferred Administrative Costs - ND		343		--		343	11 months
MISO Schedule 26 Transmission Cost Recovery Rider True-up		252		--		252	12 months
Deferred Holding Company Formation Costs		55		83		138	30 months
South Dakota – Asset-Based Margin Sharing Shortfall		138		--		138	2 months
South Dakota Transmission Rider Accrued Revenues		114		--		114	12 months
Total Regulatory Assets	$	27,391	$	124,137	$	151,528
Regulatory Liabilities:
Accumulated Reserve for Estimated Removal Costs – Net of Salvage	$	--	$	65,610	$	65,610	asset lives
Deferred Income Taxes		--		3,379		3,379	asset lives
Deferred Gain on Sale of Utility Property – Minnesota Portion		6		117		123	264 months
Deferred Marked-to-Market Gains		96		--		96	12 months
South Dakota – Nonasset-Based Margin Sharing Excess		54		--		54	12 months
Minnesota Transmission Rider Accrued Refund		28		--		28	see notes
Total Regulatory Liabilities	$	184	$	69,106	$	69,290
Net Regulatory Asset Position	$	27,207	$	55,031	$	82,238

The regulatory asset related to the unrecognized transition obligation, prior service costs and actuarial losses on pensions and other postretirement benefits represents benefit costs and actuarial losses subject to recovery through rates as they are expensed over the remaining service lives of active employees included in the plans. These unrecognized benefit costs and actuarial losses are required to be recognized as components of Accumulated Other Comprehensive Income in equity under ASC 715, Compensation—Retirement Benefits, but are eligible for treatment as regulatory assets based on their probable recovery in future retail electric rates.

All Deferred Marked-to-Market Gains and Losses recorded as of December 31, 2012 are related to forward purchases of energy scheduled for delivery through December 2018.

Conservation Improvement Program Costs and Incentives represent mandated conservation expenditures and incentives recoverable through retail electric rates.

The Accumulated Asset Retirement Obligation (ARO) Accretion/Depreciation Adjustment will accrete and be amortized over the lives of property with asset retirement obligations.

Debt Reacquisition Premiums are being recovered from OTP customers over the remaining original lives of the reacquired debt issues, the longest of which is 237 months.

Big Stone II Unrecovered Project Costs – Minnesota are the Minnesota share of costs incurred by OTP related to its participation in the abandoned Big Stone II generation project.

The regulatory assets and liabilities related to Deferred Income Taxes result from changes in statutory tax rates accounted for in accordance with ASC 740, Income Taxes .

North Dakota Renewable Resource Rider Accrued Revenues relate to revenues earned on qualifying renewable resource costs incurred to serve North Dakota customers that have not been billed to North Dakota customers as of December 31, 2012.

MISO Schedule 26 Transmission Cost Recovery Rider True-up relates to the Minnesota jurisdictional portion of MISO Schedule 26 for regional transmission cost recovery that was included in the calculation of the Minnesota Transmission Rider and subsequently adjusted to reflect actual billing amounts in the schedule. The December 31, 2012 balance will be amortized on a straight-line basis over a period of 12 months beginning in January 2014.

Minnesota Renewable Resource Rider Accrued Revenues relate to revenues earned on qualifying 2008 through December 31, 2012 renewable resource costs incurred to serve Minnesota customers that have not been billed to Minnesota customers as of December 31, 2012.

Big Stone II Unrecovered Project Costs – North Dakota are the North Dakota share of costs incurred by OTP related to its participation in the abandoned Big Stone II generation project.

Big Stone II Unrecovered Project Costs – South Dakota are the South Dakota share of costs incurred by OTP related to its participation in the abandoned Big Stone II generation project. OTP will be allowed to earn a return on the amount subject to recovery over a ten-year recovery period. Therefore, the South Dakota settlement amount is not discounted.

General Rate Case Recoverable Expenses relate to expenses incurred during rate case proceedings that are eligible for recovery.

North Dakota Transmission Rider Accrued Revenues relate to revenues earned on qualifying transmission system facilities and net operating costs incurred to serve North Dakota customers that have not been billed to North Dakota customers as of December 31, 2012.

The South Dakota Transmission Rider Accrued Revenues relate to revenues billed for qualifying transmission system facilities and operating costs incurred to serve South Dakota customers net of transmission revenues that are refundable to South Dakota customers as of December 31, 2012.

The Accumulated Reserve for Estimated Removal Costs – Net of Salvage is reduced as actual removal costs, net of salvage revenues, are incurred.

The Minnesota Transmission Rider Accrued Refund relates to revenues billed for qualifying transmission system facilities and operating costs incurred to serve Minnesota customers net of transmission revenues that are refundable to Minnesota customers as of December 31, 2012.

South Dakota – Nonasset-Based Margin Sharing Excess represents 25% of OTP’s South Dakota share of actual profit margins on nonasset-based wholesale sales of electricity. The excess margins accumulated annually will be subject to refund through future retail rate adjustments in South Dakota in the following year.

If for any reason, OTP ceases to meet the criteria for application of guidance under ASC 980 for all or part of its operations, the regulatory assets and liabilities that no longer meet such criteria would be removed from the consolidated balance sheet and included in the consolidated statement of income as an extraordinary expense or income item in the period in which the application of guidance under ASC 980 ceases.

5. Forward Contracts Classified as Derivatives

Electricity Contracts

All of OTP’s wholesale purchases and sales of energy under forward contracts that do not meet the definition of capacity contracts are considered derivatives subject to mark-to-market accounting. OTP’s objective in entering into forward contracts for the purchase and sale of energy is to optimize the use of its generating and transmission facilities and leverage its knowledge of wholesale energy markets in the region to maximize financial returns for the benefit of both its customers and shareholders. OTP’s intent in entering into certain of these contracts is to settle them through the physical delivery of energy when physically possible and economically feasible. OTP also enters into certain contracts for trading purposes with the intent to profit from fluctuations in market prices through the timing of purchases and sales.

As of December 31, 2012 OTP had recognized, on a pretax basis, $49,000 in net unrealized gains on open forward contracts for the purchase and sale of electricity. The market prices used to value OTP’s forward contracts for the purchases and sales of electricity and electricity generating capacity are determined by survey of counterparties or brokers used by OTP’s power services’ personnel responsible for contract pricing, as well as prices gathered from daily settlement prices published by the Intercontinental Exchange and CME Globex. For certain contracts, prices at illiquid trading points are based on a basis spread between that trading point and more liquid trading hub prices. These basis spreads are determined based on available market price information and the use of forward price curve models. The fair value measurements of these forward energy contracts fall into level 2 and level 3 of the fair value hierarchy set forth in ASC 820, Fair Value Measurement .

Electric operating revenues include wholesale electric sales and net unrealized derivative gains on forward energy contracts, the acquisition and settlement of financial transmission rights and congestion revenue rights options in the MISO and Electric Reliability Council of Texas (ERCOT) markets, and daily settlements of virtual transactions in the MISO, ERCOT and California Independent Transmission System Operator markets, broken down as follows for the years ended December 31:

(in thousands)	2012			2011			2010
Wholesale Sales - Company-Owned Generation	$	12,951		$	14,518		$	20,053
Revenue from Settled Contracts at Market Prices		160,987			168,313			147,003
Market Cost of Settled Contracts		(159,500	)		(166,920	)		(145,994	)
Net Margins on Settled Contracts at Market		1,487			1,393			1,009
Marked-to-Market Gains on Settled Contracts		7,864			10,208			18,901
Marked-to-Market Losses on Settled Contracts		(7,974	)		(10,176	)		(17,529	)
Net Marked-to-Market (Losses) Gains on Settled Contracts		(110	)		32			1,372
Unrealized Marked-to-Market Gains on Open Contracts		284			3,707			6,700
Unrealized Marked-to-Market Losses on Open Contracts		(235	)		(2,813	)		(5,937	)
Net Unrealized Marked-to-Market Gains on Open Contracts		49			894			763
Wholesale Electric Revenue	$	14,377		$	16,837		$	23,197

(in thousands)	December 31, 2012			December 31, 2011

Other Current Asset – Marked-to-Market Gain	$	502		$	3,803
Regulatory Asset – Current Deferred Marked-to-Market Loss		7,949			5,208
Regulatory Asset – Long-Term Deferred Marked-to-Market Loss		10,050			10,749
Total Assets		18,501			19,760

Current Liability – Marked-to-Market Loss		(18,234	)		(18,770	)
Regulatory Liability – Current Deferred Marked-to-Market Gain		(8	)		(96	)
Regulatory Liability – Long-Term Deferred Marked-to-Market Gain		(210	)		--
Total Liabilities		(18,452	)		(18,866	)

Net Fair Value of Marked-to-Market Energy Contracts	$	49		$	894

(in thousands)	Year ended December 31, 2012			Year ended December 31, 2011
Cumulative Fair Value Adjustments Included in Earnings - Beginning of Period	$	894		$	763
Less: Amounts Realized on Settlement of Contracts Entered into in Prior Periods		(861	)		(356	)
Changes in Fair Value of Contracts Entered into in Prior Periods		(33	)		(86	)
Cumulative Fair Value Adjustments in Earnings of Contracts Entered into in Prior Years at End of Period		--			321
Changes in Fair Value of Contracts Entered into in Current Period		49			573
Cumulative Fair Value Adjustments Included in Earnings - End of Period	$	49		$	894

The following table provides information on OTP’s credit risk exposure on delivered and marked-to-market forward contracts as of December 31, 2012 and December 31, 2011:

	December 31, 2012				December 31, 2011
(in thousands)	Exposure		Counterparties		Exposure		Counterparties
Net Credit Risk on Forward Energy Contracts	$	580		6	$	1,677		10
Net Credit Risk to Single Largest Counterparty	$	285			$	737

OTP had a net credit risk exposure to five counterparties with investment grade credit ratings and one counterparty that has not been rated by an external credit rating agency but has been evaluated internally and assigned an internal credit rating equivalent to investment grade. OTP had no exposure at December 31, 2012 or December 31, 2011 to counterparties with credit ratings below investment grade. Counterparties with investment grade credit ratings have minimum credit ratings of BBB- (Standard & Poor’s), Baa3 (Moody’s) or BBB- (Fitch). The credit risk exposures include net amounts due to OTP on receivables/payables from completed transactions billed and unbilled plus marked-to-market gains/losses on forward contracts for the purchase and sale of electricity scheduled for delivery subsequent to the reporting date. Individual counterparty exposures are offset according to legally enforceable netting arrangements.

The following table provides a breakdown of OTP’s credit risk standing on forward energy contracts in marked-to-market loss positions as of December 31, 2012 and December 31, 2011:

Current Liability – Marked-to-Market Loss (in thousands)	December 31, 2012			December 31, 2011
Loss Contracts Covered by Deposited Funds or Letters of Credit	$	2,176		$	3,423
Contracts Requiring Cash Deposits if OTP’s Credit Falls Below Investment Grade 1		16,058			15,347
Loss Contracts with No Ratings Triggers or Deposit Requirements		--			--
Total Current Liability – Marked-to-Market Loss	$	18,234		$	18,770
1 Certain OTP derivative energy contracts contain provisions that require an investment grade credit rating from each of the major credit rating agencies on OTP’s debt. If OTP’s debt ratings were to fall below investment grade, the counterparties to these forward energy contracts could request the immediate deposit of cash to cover contracts in net liability positions.
Contracts Requiring Cash Deposits if OTP’s Credit Falls Below Investment Grade	$	16,058		$	15,347
Offsetting Gains with Counterparties under Master Netting Agreements		(416	)		(3,471	)
Reporting Date Deposit Requirement if Credit Risk Feature Triggered	$	15,642		$	11,876

6. Common Shares and Earnings Per Share

On May 11, 2012 the Company filed a shelf registration statement with the U.S. Securities and Exchange Commission (SEC) under which it may offer for sale, from time to time, either separately or together in any combination, equity, debt or other securities described in the shelf registration statement, including common shares of the Company.

Common Share Distribution Agreement

On May 14, 2012 the Company entered into a Distribution Agreement (the Agreement) with J.P. Morgan Securities (JPMS) under which the Company may offer and sell its common shares from time to time through JPMS, as the Company’s distribution agent for the offer and sale of the shares, up to an aggregate sales price of $75,000,000.

Under the Agreement, the Company will designate the minimum price and maximum number of shares to be sold through JPMS on any given trading day or over a specified period of trading days, and JPMS will use commercially reasonable efforts to sell such shares on such days, subject to certain conditions. Sales of the shares, if any, will be made by means of ordinary brokers’ transactions on the NASDAQ Global Select Market at market prices or as otherwise agreed with JPMS. The Company may also agree to sell shares to JPMS, as principal for its own account, on terms agreed by the Company and JPMS in a separate agreement at the time of sale. JPMS will receive from the Company a commission of 2% of the gross sales price per share for any shares sold through it as the Company’s distribution agent under the Agreement.

The Company is not obligated to sell and JPMS is not obligated to buy or sell any of the shares under the Agreement. The shares, if issued, will be issued pursuant to the Company’s existing shelf registration statement, as amended. No shares were sold pursuant to the Agreement in 2012.

Following is a reconciliation of the Company’s common shares outstanding from December 31, 2011 through December 31, 2012:

Common Shares Outstanding, December 31, 2011	36,101,695
Issuances:
Restricted Stock Issued to Employees	26,120
Restricted Stock Issued to Nonemployee Directors	24,000
Conversion of Restricted Stock Units Vested	23,450
Retirements:
Shares Withheld for Individual Income Tax Requirements	(5,072	)
Forfeiture of Unvested Restricted Stock	(1,825	)
Common Shares Outstanding, December 31, 2012	36,168,368

Stock Incentive Plan

The 1999 Stock Incentive Plan, as amended (Incentive Plan), provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and other stock and stock-based awards. A total of 3,600,000 common shares are authorized for granting stock awards, of which 957,359 were still available as of December 31, 2012 under the Incentive Plan, which terminates on December 13, 2013.

Employee Stock Purchase Plan

The 1999 Employee Stock Purchase Plan (Purchase Plan) allows eligible employees to purchase the Company ’ s common shares at 85% of the market price at the end of each six-month purchase period. On April 16, 2012, the Company’s shareholders approved an amendment to the Purchase Plan, increasing the number of shares available under the Purchase Plan from 900,000 common shares to 1,400,000 common shares and making certain other changes to the terms of the Purchase Plan. Of the 1,400,000 common shares authorized to be issued under the Purchase Plan, 522,227 were available for purchase as of December 31, 2012. At the discretion of the Company, shares purchased under the Purchase Plan can be either new issue shares or shares purchased in the open market. To provide shares for the Purchase Plan, 60,439 common shares were purchased in the open market in 2012, 78,537 common shares were purchased in the open market in 2011 and 82,857 common shares were purchased in the open market in 2010. The shares to be purchased by employees participating in the Purchase Plan were not material to the calculation of diluted earnings per share during the investment period.

Dividend Reinvestment and Share Purchase Plan

On May 11, 2012 the Company filed a shelf registration statement with the SEC for the issuance of up to 1,500,000 common shares pursuant to the Company’s Automatic Dividend Reinvestment and Share Purchase Plan (the Plan), which permits shares purchased by shareholders or customers who participate in the Plan to be either new issue common shares or common shares purchased in the open market. In 2012 common shares were purchased in the open market to provide shares for the Plan. In 2010 and 2011 common shares were purchased in the open market to provide shares for the Plan under a prior shelf registration statement that expired on December 1, 2011.

Earnings Per Share

The numerator used in the calculation of both basic and diluted earnings per share is earnings available for common shares with no adjustments in 2012, 2011 or 2010. The denominator used in the calculation of basic earnings per common share is the weighted average number of common shares outstanding during the period excluding nonvested restricted shares granted to the Company’s directors and employees, which are considered contingently returnable and not outstanding for the purpose of calculating basic earnings per share. The denominator used in the calculation of diluted earnings per common share is derived by adjusting outstanding shares for the following: (1) all potentially dilutive stock options, (2) underlying shares related to nonvested restricted stock units granted to employees, (3) nonvested restricted shares, (4) shares expected to be awarded for stock performance awards granted to executive officers, and (5) shares expected to be issued under the deferred compensation program for directors. The adjustments to the denominators used to calculate basic and diluted earnings per share resulted in no differences greater than $0.01 between basic and diluted earnings per share in total or from continuing or discontinued operations in each of the years ended December 31, 2012, 2011 and 2010.

The following outstanding stock options with exercise prices greater than the average market price of the underlying shares were excluded from the calculation of diluted earnings per share for the years ended December 31, 2012, 2011 and 2010:

Year	Options Outstanding	Range of Exercise Prices
2012	92,497	$24.93 – $27.245
2011	156,397	$24.93 – $31.34
2010	383,460	$24.93 – $31.34

7. Share-Based Payments

Purchase Plan

The Purchase Plan allows employees through payroll withholding to purchase shares of the Company’s common stock at a 15% discount from the average market price on the last day of a six month investment period. Under ASC 718, Compensation—Stock Compensation, the Company is required to record compensation expense related to the 15% discount. The 15% discount resulted in compensation expense of $179,000 in 2012, $257,000 in 2011 and $277,000 in 2010. The 15% discount is not taxable to the employee and is not a deductible expense for tax purposes for the Company.

Stock Options Granted Under the Incentive Plan

Since the inception of the Incentive Plan in 1999, the Company has granted 2,041,500 options for the purchase of the Company’s common stock. All of the options granted had vested or were forfeited as of December 31, 2007. The exercise price of the options granted was the average market price of the Company’s common stock on the grant date. Under ASC 718 accounting requirements, compensation expense is recorded based on the estimated fair value of the options on their grant date using a fair-value option pricing model. Under ASC 718 accounting requirements, the fair value of the options granted has been recorded as compensation expense over the requisite service period (the vesting period of the options). The estimated fair value of all options granted under the Incentive Plan was based on the Black-Scholes option pricing model.

The following table provides information about options outstanding as of December 31, 2012:

Exercise Price	Outstanding and Exercisable as of 12/31/12	Remaining Contractual Life (yrs)
$24.93	19,800	2.3
$26.495	20,100	1.3
$27.245	52,597	0.3

Presented below is a summary of the stock options activity:

Stock Option Activity	2012				2011				2010
	Options		Average Exercise Price		Options		Average Exercise Price		Options		Average Exercise Price
Outstanding, Beginning of Year		156,397	$	28.53		383,460	$	27.28		444,810	$	26.82
Granted		--		--		--		--		--		--
Exercised		--		--		--		--		27,800		19.75
Forfeited or Expired		63,900		31.34		227,063		26.43		33,550		27.38
Outstanding, End of Year		92,497		26.59		156,397		28.53		383,460		27.28
Exercisable, End of Year		92,497		26.59		156,397		28.53		383,460		27.28
Cash Received for Options Exercised				--				--			$	549,000
Fair Value of Options Granted During Year			none granted				none granted				none granted

Restricted Stock Granted to Directors

Under the Incentive Plan, restricted shares of the Company’s common stock have been granted to members of the Company’s Board of Directors as a form of compensation. Under ASC 718 accounting requirements, compensation expense related to restricted shares is based on the fair value of the restricted shares on their grant dates. On April 16, 2012 the Company’s Board of Directors granted 24,000 shares of restricted stock to the Company’s nonemployee directors. The restricted shares vest 25% per year on April 8 of each year in the period 2013 through 2016 and are eligible for full dividend and voting rights. Restricted shares not vested and dividends on those restricted shares are subject to forfeiture under the terms of the restricted stock award agreement. The grant date fair value of each share of restricted stock was $21.32 per share, the average market price on the date of grant.

Presented below is a summary of the status of directors’ restricted stock awards for the years ended December 31:

Directors’ Restricted Stock Awards	2012				2011				2010
	Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value
Nonvested, Beginning of Year		54,250	$	23.26		59,725	$	24.95		54,300	$	27.81
Granted		24,000		21.32		24,000		22.51		24,800		21.835
Vested		21,350		24.86		29,475		26.07		19,375		28.98
Forfeited		--				--				--

Nonvested, End of Year		56,900		21.84		54,250		23.26		59,725		24.95
Compensation Expense Recognized			$	552,000			$	740,000			$	595,000

Fair Value of Shares Vested in Year				531,000				768,000				561,000

Restricted Stock Granted to Employees

Under the Incentive Plan, restricted shares of the Company’s common stock have been granted to employees as a form of compensation. Under ASC 718 accounting requirements, compensation expense related to restricted shares is based on the fair value of the restricted shares on their grant dates. On April 16, 2012 the Company’s Board of Directors granted 24,500 shares of restricted stock to the Company’s executive officers under the Incentive Plan. The restricted shares vest 25% per year on April 8 of each year in the period 2013 through 2016 and are eligible for full dividend and voting rights. Restricted shares not vested and dividends on those restricted shares are subject to forfeiture under the terms of the restricted stock award agreement. The grant date fair value of each share of restricted stock was $21.32 per share, the average market price on the date of grant.

On October 1, 2012 the Company’s Board of Directors granted 1,620 shares of restricted stock to the Company’s Vice President of Human Resources under the Incentive Plan. The restricted shares vest 25% per year on April 8 of each year in the period 2013 through 2016 and are eligible for full dividend and voting rights. Restricted shares not vested and dividends on those restricted shares are subject to forfeiture under the terms of the restricted stock award agreement. The grant date fair value of the award was $23.93 per share, the average market price on the date of the grant.

Presented below is a summary of the status of employees’ restricted stock awards for the years ended December 31:

Employees’ Restricted Stock Awards	2012				2011				2010
	Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value		Shares		Weighted Average Grant-Date Fair Value
Nonvested, Beginning of Year		34,868	$	22.86		66,161	$	24.79		50,478	$	28.31
Granted		26,120		21.48		24,600		22.51		31,600		21.835
Awards Vested		11,518		24.14		55,893		25.00		15,917		29.76
Forfeited		1,825		22.20		--				--
Nonvested, End of Year		47,645		21.82		34,868		22.86		66,161		24.79
Compensation Expense Recognized			$	325,000			$	832,000			$	914,000
Fair Value of Awards Vested				278,000				1,397,000				474,000

Restricted Stock Units Granted to Employees

On April 16, 2012 the Company’s Board of Directors granted 12,800 restricted stock units to key employees under the Incentive Plan payable in common shares on April 8, 2016, the date the units vest. The grant date fair value of each restricted stock unit was $17.14 per share based on the market value of the Company’s common stock on April 16, 2012, discounted for the value of the dividend exclusion over the four-year vesting period.

On October 1, 2012 the Company’s Board of Director’s granted 3,000 restricted stock units to key employees under the Incentive Plan payable in common shares on April 8, 2016, the date the units vest. The grant date fair value of each restricted stock unit was $19.87 per share based on the market value of the Company’s common stock on October 1, 2012, discounted for the fair value of the dividend exclusion over the vesting period. The weighted average contractual term of stock units outstanding as of December 31, 2012 is 2.5 years.

Presented below is a summary of the status of employees’ restricted stock unit awards for the years ended December 31:

Employees’ Restricted Stock Unit Awards	2012				2011				2010
	Restricted Stock Units		Weighted Average Grant-Date Fair Value		Restricted Stock Units		Weighted Average Grant-Date Fair Value		Restricted Stock Units		Weighted Average Grant-Date Fair Value
Nonvested, Beginning of Year		73,815	$	20.95		79,315	$	23.55		92,670	$	25.42
Granted		15,800		17.66		19,800		18.03		26,180		17.76
Vested		20,750		27.13		20,025		27.94		18,965		23.93
Forfeited		8,200		19.97		5,275		22.56		20,570		25.55
Nonvested, End of Year		60,665		18.11		73,815		20.95		79,315		23.55
Compensation Expense Recognized			$	256,000			$	349,000			$	250,000
Fair Value of Units Converted in Year				563,000				559,000				454,000

Stock Performance Awards granted to Executive Officers

The Compensation Committee of the Company’s Board of Directors has approved stock performance award agreements under the Incentive Plan for the Company’s executive officers. Under these agreements, the officers could be awarded shares of the Company’s common stock based on the Company’s total shareholder return relative to that of its peer group of companies in the Edison Electric Institute (EEI) Index over a three-year period beginning on January 1 of the year the awards are granted. The number of shares earned, if any, will be awarded and issued at the end of each three-year performance measurement period. The participants have no voting or dividend rights under these award agreements until the shares are issued at the end of the performance measurement period. The terms of the outstanding awards dictate that these awards be classified and accounted for as liability awards, in accordance with the requirements of ASC 718, with compensation measured over the performance period based on the fair value of the award at the end of each reporting period subsequent to the grant date.

On April 16, 2012 the Company’s Board of Directors granted performance share awards to the Company’s executive officers under the Incentive Plan for the 2012-2014 performance measurement period.

The table below provides a summary of stock performance awards granted and amounts expensed related to the stock performance awards:

Performance Period	Maximum Shares Subject To Award		Shares Used To Estimate Expense		Grant Date Fair Value		Expense Recognized in the Year Ended December 31,							Shares Awarded
							2012		2011		2010
2012-2014		161,600		121,539	$	21.75		1,001,000	$	--	$	--			--
2011-2013		97,200		15,435	$	23.61		254,000		553,000		--			26,100
2010-2012		146,800		73,400	$	20.97		--		572,000		513,000			49,500
2009-2011		181,200		90,600	$	27.98		--		746,000		(178,000	)		64,500
2008-2010		114,800		70,843	$	37.59		--		--		888,000			18,600
Total							$	1,255,000	$	1,871,000	$	1,223,000			158,700

The Company’s former Chief Executive Officer resigned his employment with the Company effective December 15, 2011, and his resignation was treated as a termination without cause for the purposes of his employment agreement. Under the terms of his employment agreement, he received the targeted number of the Company’s common shares for the performance awards granted him in 2009, 2010 and 2011, or 88,300 shares, valued at the average of the high and low price of the Company’s common shares on December 14, 2011 of $21.191 per share, for a total value of $1,871,165.

The Company’s former Chief Operating Officer resigned his employment with the Company effective December 30, 2010 with good reason as that term is defined in his employment agreement. Under the terms of his employment agreement, he received the targeted number of the Company’s common shares for the performance awards granted him in 2008, 2009 and 2010, or 70,400 shares, valued at the average of the high and low price of the Company’s common shares on December 30, 2010 of $22.78 per share, for a total value of $1,603,712.

The shares awarded shown in the table above for the 2008-2010, 2009-2011, 2010-2012 and 2011-2013 performance periods reflect only shares received under the executive employment agreements. The Company’s 2008-2010, 2009-2011 and 2010-2012 total shareholder return rankings resulted in no incentive share awards for the Company’s active plan participants for the 2008-2010, 2009-2011 and 2010-2012 performance measurement periods.

The expense recorded in 2010 related to the 2008-2010 performance measurement period reflects one-third of the grant-date fair value of the total targeted number of awards for that performance period. The expense recorded in 2010 related to the 2009-2011 performance measurement period liability awards reflects the December 31, 2010 fair value of these awards, estimated to be $0, which resulted in a reversal of $845,000 of expense accrued in 2009, plus the December 30, 2010 market value of the former Chief Operating Officer’s 2009-2011 targeted share awards of $667,000. The expense recorded in 2010 related to the 2010-2012 performance measurement period liability awards reflects the December 31, 2010 fair value of these awards, estimated to be $0, plus the December 30, 2010 market value of the former Chief Operating Officer’s 2010-2012 targeted share awards of $513,000.

As of December 31, 2012 the total remaining unrecognized amount of compensation expense related to stock-based compensation for all of the Company’s stock-based payment programs was approximately $4.0 million (before income taxes), which will be amortized over a weighted-average period of 2.2 years.

8. Retained Earnings and Dividend Restriction

The Company’s Restated Articles of Incorporation, as amended, contain provisions that limit the amount of dividends that may be paid to common shareholders by the amount of any declared but unpaid dividends to holders of the Company’s cumulative preferred shares. Under these provisions none of the Company’s retained earnings were restricted at December 31, 2012.

The Company is a holding company with no significant operations of its own. The primary source of funds for payments of dividends to the Company’s shareholders is from dividends paid or distributions made by the Company’s subsidiaries. As a result of certain statutory limitations or regulatory or financing agreements, restrictions could occur on the amount of distributions allowed to be made by the Company’s subsidiaries.

100

Both the Company and OTP’s credit agreements contain restrictions on the payment of cash dividends upon a default or event of default. An event of default would be considered to have occurred if the Company did not meet certain financial covenants. As of December 31, 2012 the Company was in compliance with the debt covenants. See note 10 for further information on the covenants.

The MPUC indirectly limits the amount of dividends OTP can pay to the Company by requiring an equity-to-total-capitalization ratio between 46.3% and 56.7%. OTP’s equity to total capitalization ratio was 52.0% as of December 31, 2012. Total capitalization for OTP cannot exceed $809 million.

9. Commitments and Contingencies

Construction and Other Purchase Commitments

At December 31, 2012 OTP had commitments under contracts in connection with construction programs aggregating approximately $79,413,000.

Electric Utility Capacity and Energy Requirements and Coal and Delivery Contracts

OTP has commitments for the purchase of capacity and energy requirements under agreements extending through 2032. OTP has contracts providing for the purchase and delivery of a significant portion of its current coal requirements. OTP’s current coal purchase agreements, under which OTP is committed to the minimum purchase amounts or to make payments in lieu thereof, expire in 2014, 2016 and 2040. Fuel clause adjustment mechanisms lessen the risk of loss from market price changes because they provide for recovery of most fuel costs. See table below for schedule of commitments.

Operating Leases

OTP has obligations to make future operating lease payments primarily related to land leases and coal rail-car leases. The Company’s nonelectric companies have obligations to make future operating lease payments primarily related to leases of buildings, construction equipment and vehicles. Rent expense from continuing operations was $11,858,000, $10,061,000 and $10,414,000 for 2012, 2011 and 2010, respectively.

The amounts of the Company’s commitments under capacity and energy agreements, coal and coal delivery contracts and operating leases as of December 31, 2012, are as follows:


	Capacity and Energy Requirements		Coal and Freight Purchase Commitments			Operating Leases
(in thousands)	Capacity and Energy Requirements		Coal and Freight Purchase Commitments			OTP		Nonelectric		Total
2013	$	30,964	$	42,875	$	2,464	$	5,961	$	8,425
2014		15,980		20,384		2,150		4,830		6,980
2015		13,762		16,886		1,602		4,261		5,863
2016		16,511		20,803		1,320		3,465		4,785
2017		15,868		22,047		978		2,355		3,333
Beyond 2017		77,040		673,961		12,787		549		13,336
Total	$	170,125	$	796,956	$	21,301	$	21,421	$	42,722

Contingencies

Contingencies, by their nature, relate to uncertainties that require the Company’s management to exercise judgment both in assessing the likelihood a liability has been incurred as well as in estimating the amount of potential loss. The most significant contingencies impacting the Company’s consolidated financial statements are those related to, environmental remediation, litigation matters and the resolution of matters related to open tax years. Should all of these items result in liabilities being incurred, the loss could be as high as $2.0 million. Additionally, the Company may become subject to significant claims of which its management is unaware, or the claims of which its management is aware, such as possible warranty claims on products that are beyond their warranty period but where a customer may claim to have provided notice of a defect while the product was under warranty. If these claims were to occur, it could result in the Company incurring a significantly greater liability than it anticipates.

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Other

The Company is a party to litigation arising in the normal course of business. The Company regularly analyzes current information and, as necessary, provides accruals for liabilities that are probable of occurring and that can be reasonably estimated. The Company believes the effect on its consolidated results of operations, financial position and cash flows, if any, for the disposition of all matters pending as of December 31, 2012 will not be material.

10. Short-Term and Long-Term Borrowings

Short-Term Debt

The following table presents the status of the Company’s lines of credit as of December 31, 2012 and December 31, 2011:

(in thousands)	Line Limit		In Use on December 31, 2012		Restricted due to Outstanding Letters of Credit		Available on December 31, 2012		Available on December 31, 2011
Otter Tail Corporation Credit Agreement	$	150,000	$	--	$	733	$	149,267	$	198,776
OTP Credit Agreement		170,000		--		3,189		166,811		165,950
Total	$	320,000	$	--	$	3,922	$	316,078	$	364,726

Under the Otter Tail Corporation Credit Agreement referenced below, the maximum amount of debt outstanding in 2012 was $66,236,000 on July 13, 2012 and the average daily balance of debt outstanding during 2012 was $12,078,000. The weighted average interest rate paid on debt outstanding under the Otter Tail Corporation Credit Agreement during 2012 was 3.8% compared with 3.7% in 2011. Under the OTP Credit Agreement referenced below, the maximum amount of debt outstanding in 2012 was $16,582,000 on August 15, 2012 and the average daily balance of debt outstanding during 2012 was $5,867,000. The weighted average interest rate paid on debt outstanding under the OTP Credit Agreement during 2012 was 1.7% compared with 1.5% in 2011.

On October 29, 2012 the Company entered into a Third Amended and Restated Credit Agreement (the Otter Tail Corporation Credit Agreement) with the Banks named therein, which is an unsecured $150 million revolving credit facility that the Company can draw on to support its operations and the operations of the businesses of Varistar. The Otter Tail Corporation Credit Agreement amends and restates the Company’s Second Amended and Restated Credit Agreement dated as of May 4, 2010, which was set to expire on May 4, 2013, and provided for a $200 million line of credit. Borrowings under the Otter Tail Corporation Credit Agreement currently bear interest at LIBOR plus 1.75%, subject to adjustment based on the Company’s senior unsecured credit ratings. The interest rate being charged under the Second Amended and Restated Credit Agreement prior to the renewal was LIBOR plus 3.25%. Under the Otter Tail Corporation Credit Agreement, the Company is required to pay the Banks’ commitment fees based on the average daily unused amount available to be drawn under the revolving credit facility. The Otter Tail Corporation Credit Agreement is set to expire on October 29, 2017. The Otter Tail Corporation Credit Agreement contains a number of restrictions on the Company and the businesses of Varistar, and its material subsidiaries, including restrictions on the Company’s and Varistar’s ability to merge, sell assets, make investments, create or incur liens on assets, guarantee the obligations of certain other parties and engage in transactions with related parties. The Otter Tail Corporation Credit Agreement also contains certain financial covenants. Specifically, the Company must not permit the ratio of its “Interest-bearing Debt” to “Total Capitalization” (each as defined in the Otter Tail Corporation Credit Agreement) to be greater than 0.60 to 1.00 as of the last day of any fiscal quarter of the Company, or permit its “Interest and Dividend Coverage Ratio” (as defined in the Otter Tail Corporation Credit Agreement) for any period of four consecutive fiscal quarters to be less than 1.50 to 1.00. The Otter Tail Corporation Credit Agreement also contains affirmative covenants and events of default. It does not include provisions for the termination of the agreement or the acceleration of repayment of amounts outstanding due to changes in the Company’s credit ratings. The Company’s obligations under the Otter Tail Corporation Credit Agreement are guaranteed by certain of the Company’s material subsidiaries. Outstanding letters of credit issued by the Company under the Otter Tail Corporation Credit Agreement can reduce the amount available for borrowing under the line by up to $40 million. The Otter Tail Corporation Credit Agreement has an accordion feature whereby the line can be increased to $250 million on the terms and subject to the conditions described in the Otter Tail Corporation Credit Agreement.

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On October 29, 2012 OTP entered into a Second Amended and Restated Credit Agreement (the OTP Credit Agreement) with the Banks named therein. The OTP Credit Agreement amends and restates the $170 million OTP Credit Agreement dated as of March 3, 2011, which was set to expire on March 3, 2016. The OTP Credit Agreement provides for a $170 million line of credit that may be increased to $250 million on the terms and subject to the conditions described in the OTP Credit Agreement. The OTP Credit Agreement is an unsecured revolving credit facility that OTP can draw on to support the working capital needs and other capital requirements of its operations, including letters of credit in an aggregate amount not to exceed $50 million outstanding at any time. Borrowings under the OTP Credit Agreement currently bear interest at LIBOR plus 1.25%, subject to adjustment based on the ratings of OTP’s senior unsecured debt. The interest rate being charged under the OTP Credit Agreement prior to the renewal was LIBOR plus 1.5%. Under the OTP Credit Agreement, OTP is required to pay the Banks’ commitment fees based on the average daily unused amount available to be drawn under the revolving credit facility. The OTP Credit Agreement is set to expire on October 29, 2017. The OTP Credit Agreement contains a number of restrictions on the business of OTP, including restrictions on its ability to merge, sell assets, make investments, create or incur liens on assets, guarantee the obligations of any other party, and engage in transactions with related parties. The OTP Credit Agreement also contains affirmative covenants and events of default, as well as a financial covenant under which OTP may not permit the ratio of its “Interest-bearing Debt” to “Total Capitalization” (as defined in the OTP Credit Agreement) to be greater than 0.60 to 1.00. The prior OTP Credit Agreement included similar covenants and events of default, but also included a financial covenant that is not included in the current OTP Credit Agreement, under which OTP could not permit its “Interest and Dividend Coverage Ratio” (as defined in the prior OTP Credit Agreement) to be less than 1.50 to 1.00. The OTP Credit Agreement does not include provisions for the termination of the agreement or the acceleration of repayment of amounts outstanding due to changes in OTP’s credit ratings. OTP’s obligations under the OTP Credit Agreement are not guaranteed by any other party.

Long-Term Debt

On May 11, 2012 the Company filed a shelf registration statement with the SEC under which it may offer for sale, from time to time, either separately or together in any combination, equity and/or debt securities described in the shelf registration statement.

On March 18, 2011 the Company borrowed $1.5 million under a Partnership in Assisting Community Expansion loan to finance capital investments at Northern Pipe Products, Inc. (Northern Pipe), the Company’s PVC pipe manufacturing subsidiary located in Fargo, North Dakota. The ten-year unsecured note bears interest at 2.54% with monthly principal and interest payments through March 2021. On April 6, 2011 Otter Tail Corporation borrowed $0.5 million under a North Dakota Development Fund loan to finance additional capital investments at Northern Pipe. The seven-year unsecured note bears interest at 3.95% with monthly principal and interest payments through April 1, 2018.

Senior Unsecured Notes 4.63%, due December 1, 2021

On December 1, 2011, OTP issued $140 million aggregate principal amount of OTP’s 4.63% Senior Unsecured Notes due December 1, 2021 (the 2021 Notes) pursuant to a Note Purchase Agreement (the 2011 Note Purchase Agreement), dated as of July 29, 2011, with the purchasers named therein.

Debt Retirements

On July 13, 2012 the Company prepaid in full its outstanding $50 million, 8.89% Senior Unsecured Note due November 30, 2017 (the Cascade Note) issued pursuant to the Note Purchase Agreement dated as of February 23, 2007, as amended, between the Company and Cascade Investment, L.L.C. (Cascade). Immediately before the prepayment, the Cascade Note bore interest at 8.89% annually. The price paid by the Company to prepay the Cascade Note was $63,031,000, which included the principal amount of the Cascade Note plus accrued interest of $531,000 and a negotiated prepayment premium of $12,500,000. The Company used funds available under the Otter Tail Corporation Credit Agreement for the prepayment. This early retirement reflects the Company’s desire to lower its long-term debt outstanding given its recent divestitures. On repayment, $606,000 in unamortized debt expense related to this note was immediately recognized as expense along with the $12,500,000 negotiated prepayment premium, which, in total, reduced diluted earnings per share by $0.22 in the nine months ended September 30, 2012. Cascade owned approximately 9.6% of the Company’s outstanding common stock as of December 31, 2012.

In the third quarter of 2012, $25,000 of Grant County, South Dakota Pollution Control Refunding Revenue Bonds 4.65%, due September 1, 2017, and $35,000 of Mercer County, North Dakota Pollution Control Refunding Revenue Bonds 4.85%, due September 1, 2022, were redeemed for estate settlement purposes.

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On December 1, 2011 OTP used a portion of the proceeds from the 2021 Notes to retire $90 million aggregate principal amount of its 6.63% Senior Notes due December 1, 2011 at maturity and to retire early $10.4 million aggregate principal amount of its pollution control refunding revenue bonds due December 1, 2012. No penalty was paid for the early retirement.

2007 and 2011 Note Purchase Agreements

The note purchase agreement (the 2007 Note Purchase Agreement) relating to OTP’s $155 million senior unsecured notes issued in four series consisting of $33 million aggregate principal amount of 5.95% Senior Unsecured Notes, Series A, due 2017; $30 million aggregate principal amount of 6.15% Senior Unsecured Notes, Series B, due 2022; $42 million aggregate principal amount of 6.37% Senior Unsecured Notes, Series C, due 2027; and $50 million aggregate principal amount of 6.47% Senior Unsecured Notes, Series D, due 2037, as amended and the 2011 Note Purchase Agreement each states that OTP may prepay all or any part of the notes issued thereunder (in an amount not less than 10% of the aggregate principal amount of the notes then outstanding in the case of a partial prepayment) at 100% of the principal amount prepaid, together with accrued interest and a make-whole amount. The 2011 Note Purchase Agreement states in the event of a transfer of utility assets put event, the noteholders thereunder have the right to require OTP to repurchase the notes held by them in full, together with accrued interest and a make-whole amount, on the terms and conditions specified in the 2011 Note Purchase Agreement. The 2007 Note Purchase Agreement and the 2011 Note Purchase Agreement each also states OTP must offer to prepay all of the outstanding notes issued thereunder at 100% of the principal amount together with unpaid accrued interest in the event of a change of control of OTP, and each contains a number of restrictions on OTP. These include restrictions on OTP’s ability to merge, sell assets, create or incur liens on assets, guarantee the obligations of any other party, and engage in transactions with related parties.

The aggregate amounts of maturities on bonds outstanding and other long-term obligations at December 31, 2012 for each of the next five years are:

(in thousands)		2013				2014				2015				2016				2017
Aggregate amounts of Debt Maturities		$	176			$	188			$	201			$	100,206			$	38,284

The following tables provide a breakdown of the assignment of the Company’s consolidated short-term and long-term debt outstanding as of December 31, 2012 and December 31, 2011:

December 31, 2012 (in thousands)	OTP		Otter Tail Corporation		Otter Tail Corporation Consolidated
Short-Term Debt	$	--	$	--	$	--
Long-Term Debt:
9.000% Notes, due December 15, 2016			$	100,000	$	100,000
Senior Unsecured Notes 5.95%, Series A, due August 20, 2017	$	33,000				33,000
Grant County, South Dakota Pollution Control Refunding Revenue Bonds 4.65%, due September 1, 2017		5,065				5,065
Senior Unsecured Notes 4.63%, due December 1, 2021		140,000				140,000
Senior Unsecured Notes 6.15%, Series B, due August 20, 2022		30,000				30,000
Mercer County, North Dakota Pollution Control Refunding Revenue Bonds 4.85%, due September 1, 2022		20,070				20,070
Senior Unsecured Notes 6.37%, Series C, due August 20, 2027		42,000				42,000
Senior Unsecured Notes 6.47%, Series D, due August 20, 2037		50,000				50,000
Other Obligations - Various up to 3.95% at December 31, 2012				1,725		1,725
Total	$	320,135	$	101,725	$	421,860
Less: Current Maturities		--		176		176
Unamortized Debt Discount		--		4		4
Total Long-Term Debt	$	320,135	$	101,545	$	421,680
Total Short-Term and Long-Term Debt (with current maturities)	$	320,135	$	101,721	$	421,856

104

December 31, 2011 (in thousands)	OTP		Otter Tail Corporation		Otter Tail Corporation Consolidated
Short-Term Debt	$	--	$	--	$	--
Long-Term Debt:
9.000% Notes, due December 15, 2016			$	100,000	$	100,000
Senior Unsecured Notes 5.95%, Series A, due August 20, 2017	$	33,000				33,000
Grant County, South Dakota Pollution Control Refunding Revenue Bonds 4.65%, due September 1, 2017		5,090				5,090
Senior Unsecured Note 8.89%, due November 30, 2017				50,000		50,000
Senior Unsecured Notes 4.63%, due December 1, 2021		140,000				140,000
Senior Unsecured Notes 6.15%, Series B, due August 20, 2022		30,000				30,000
Mercer County, North Dakota Pollution Control Refunding Revenue Bonds 4.85%, due September 1, 2022		20,105				20,105
Senior Unsecured Notes 6.37%, Series C, due August 20, 2027		42,000				42,000
Senior Unsecured Notes 6.47%, Series D, due August 20, 2037		50,000				50,000
Other Obligations - Various up to 3.95% at December 31, 2011				1,889		1,889
Total	$	320,195	$	151,889	$	472,084
Less: Current Maturities		--		165		165
Unamortized Debt Discount		--		4		4
Total Long-Term Debt	$	320,195	$	151,720	$	471,915
Total Short-Term and Long-Term Debt (with current maturities)	$	320,195	$	151,885	$	472,080

Financial Covenants

As of December 31, 2012 the Company was in compliance with the financial statement covenants that existed in its debt agreements.

The Company’s borrowing agreements are subject to certain financial covenants. Specifically:

●

Under the Otter Tail Corporation Credit Agreement, the Company may not permit the ratio of its Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00 or permit its Interest and Dividend Coverage Ratio to be less than 1.50 to 1.00 (each measured on a consolidated basis), as provided in the Otter Tail Corporation Credit Agreement.

●	Under the OTP Credit Agreement, OTP may not permit the ratio of its Interest-bearing Debt to Total Capitalization to be greater than 0.60 to 1.00.

●

11. Class B Stock Options of Subsidiary

In conjunction with the sale of IPH on May 6, 2011, all 363 outstanding IPH Class B common share options were cancelled by mutual agreement between the issuer and the holders of the options and a liability to the holders of the options was established based on the fair value of the options on May 6, 2011. The liability was assumed by the new owner of IPH. The options were adjusted to their fair value based on the fair value of an underlying share of Class B Common Stock of $2,973.90 per share on May 6, 2011. The book value of IPH Class B common share options prior to their cancellation on May 6, 2011 was based on an IPH Class B common share value of $2,085.88 per share. The $322,000 difference between the fair value and book value of the options was charged to retained earnings and earnings available for common shares were reduced by $322,000 in the second quarter of 2011.

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12. Pension Plan and Other Postretirement Benefits

Pension Plan

The Company’s noncontributory funded pension plan covers substantially all corporate employees and OTP nonunion employees hired prior to January 1, 2006, and all union employees of OTP. The plan provides 100% vesting after five vesting years of service and for retirement compensation at age 65, with reduced compensation in cases of retirement prior to age 62. The Company reserves the right to discontinue the plan but no change or discontinuance may affect the pensions theretofore vested.

The pension plan has a trustee who is responsible for pension payments to retirees and a separate pension fund manager responsible for managing the plan’s assets. An independent actuary assists the Company in performing the necessary actuarial valuations for the plan.

The plan assets consist of common stock and bonds of public companies, U.S. government securities, cash and cash equivalents and alternative investments. None of the plan assets are invested in common stock, preferred stock or debt securities of the Company.

Components of net periodic pension benefit cost:

(in thousands)	2012			2011			2010
Service Cost--Benefit Earned During the Period	$	5,084		$	4,415		$	4,654
Interest Cost on Projected Benefit Obligation		12,465			12,666			12,067
Expected Return on Assets		(14,430	)		(14,140	)		(13,711	)
Amortization of Prior-Service Cost		409			434			683
Amortization of Net Actuarial Loss		5,041			2,617			2,002
Net Periodic Pension Cost	$	8,569		$	5,992		$	5,695

Weighted-average assumptions used to determine net periodic pension cost for the year ended December 31:

	2012			2011			2010
Discount Rate		5.15	%		6.00	%		6.00	%
Long-Term Rate of Return on Plan Assets		8.00	%		8.00	%		8.50	%
Rate of Increase in Future Compensation Level		3.38	%		3.75	%		3.75	%

The following table presents amounts recognized in the consolidated balance sheets as of December 31:

(in thousands)	2012		2011
Regulatory Assets:
Unrecognized Prior Service Cost	$	1,109	$	1,507
Unrecognized Actuarial Loss		98,808		89,820
Total Regulatory Assets		99,917		91,327

Accumulated Other Comprehensive Loss:
Unrecognized Prior Service Cost		22		28
Unrecognized Actuarial Loss		1,114		1,131
Total Accumulated Other Comprehensive Loss		1,136		1,159
Deferred Income Taxes		758		772
Noncurrent Liability	$	84,616	$	77,495

Funded status as of December 31:

(in thousands)	2012			2011
Accumulated Benefit Obligation	$	(238,706	)	$	(211,324	)

Projected Benefit Obligation	$	(275,634	)	$	(246,098	)
Fair Value of Plan Assets		191,018			168,603
Funded Status	$	(84,616	)	$	(77,495	)

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The following tables provide a reconciliation of the changes in the fair value of plan assets and the plan’s benefit obligations over the two-year period ended December 31:

(in thousands)	2012			2011
Reconciliation of Fair Value of Plan Assets:
Fair Value of Plan Assets at January 1	$	168,603		$	171,308
Actual Return on Plan Assets		22,656			6,764
Discretionary Company Contributions		10,000			--
Benefit Payments		(10,241	)		(9,469	)
Fair Value of Plan Assets at December 31	$	191,018		$	168,603
Estimated Asset Return		13.44	%		4.06	%
Reconciliation of Projected Benefit Obligation:
Projected Benefit Obligation at January 1	$	246,098		$	217,049
Service Cost		5,084			4,415
Interest Cost		12,465			12,666
Benefit Payments		(10,241	)		(9,469	)
Actuarial Loss		22,228			21,437
Projected Benefit Obligation at December 31	$	275,634		$	246,098

Weighted-average assumptions used to determine benefit obligations at December 31:

	2012			2011
Discount Rate		4.50	%		5.15	%
Rate of Increase in Future Compensation Level		3.13	%		3.38	%

The assumed rate of return on pension fund assets used for the determination of 2013 net periodic pension cost is 7.75%. The assumed long-term rate of return on plan assets is based primarily on asset category studies using historical market return and volatility data with forward looking estimates based on existing financial market conditions and forecasts of capital markets. Modest excess return expectations versus some market indices are incorporated into the return projections based on the actively managed structure of the investment programs and their records of achieving such returns historically. We review our rate of return on plan asset assumptions annually. The assumptions are largely based on the asset category rate-of-return assumptions developed annually with our pension plan investment advisors, as well as input from actuaries who work with the pension plan.

Market-related value of plan assets — The Company’s expected return on plan assets is determined based on the expected long-term rate of return on plan assets and the market-related value of plan assets.

The Company bases actuarial determination of pension plan expense or income on a market-related valuation of assets, which reduces year-to-year volatility. This market-related valuation calculation recognizes investment gains or losses over a five-year period from the year in which they occur. Investment gains or losses for this purpose are the difference between the expected return calculated using the market-related value of assets and the actual return based on the fair value of assets. Since the market-related valuation calculation recognizes gains or losses over a five-year period, the future value of the market-related assets will be impacted as previously deferred gains or losses are recognized.

Measurement Dates:	2012	2011
Net Periodic Pension Cost	January 1, 2012	January 1, 2011

End of Year Benefit Obligations	January 1, 2012 projected to December 31, 2012	January 1, 2011 projected to December 31, 2011

Market Value of Assets	December 31, 2012	December 31, 2011

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The estimated amounts of unrecognized net actuarial losses and prior service costs to be amortized from regulatory assets and accumulated other comprehensive loss into the net periodic pension cost in 2013 are:

(in thousands)	2013
Decrease in Regulatory Assets:
Amortization of Unrecognized Prior Service Cost	$	333
Amortization of Unrecognized Actuarial Loss		6,652
Decrease in Accumulated Other Comprehensive Loss:
Amortization of Unrecognized Prior Service Cost		9
Amortization of Unrecognized Actuarial Loss		178
Total Estimated Amortization	$	7,172

Cash flows — The Company had no minimum funding requirement as of December 31, 2012, but made a discretionary plan contribution of $10,000,000 in January 2013.

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid out from plan assets:

											Years
(in thousands)	2013		2014		2015		2016		2017		2018-2022
	$	10,747	$	11,095	$	11,591	$	12,117	$	12,844	$	77,356

The following objectives guide the investment strategy of the Company’s pension plan (the Plan):

●

The Plan is managed to operate in perpetuity.

●

The Plan will meet the pension benefit obligation payments of the Company.

●

The Plan’s assets should be invested with the objective of meeting current and future payment requirements while minimizing annual contributions and their volatility.

●

The asset strategy reflects the desire to meet current and future benefit payments while considering a prudent level of risk and diversification.

The asset allocation strategy developed by the Company’s Investment Committee is based on the current needs of the Plan, the investment objectives listed above, the investment preferences and risk tolerance of the committee and a desired degree of diversification.

The asset allocation strategy contains guideline percentages, at market value, of the total Plan invested in various asset classes. The strategic target allocation and the tactical range shown in the table that follows is a guide that will at times not be reflected in actual asset allocations that may be dictated by prevailing market conditions, independent actions of the Investment Committee and/or investment manager, and required cash flows to and from the Plan. The tactical range provides flexibility for the investment manager’s portfolio to vary around the target allocation without the need for immediate rebalancing.

Allocation targets and tactical ranges shown below reflect the Investment Policy Statement approved by the Company’s Investment Committee. Each of the asset categories is within its respective tactical range. The Investment Committee monitors actual asset allocations and directs contributions and withdrawals toward maintaining the current targeted allocation percentages listed below.

Asset Allocation	Strategic Target			Tactical Range
Equity Securities		51	%		41%-61	%
Fixed-Income		44	%		34%-54	%
Alternatives		5	%		0%-12	%
Cash		0	%		0%-5	%

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The Company’s pension plan asset allocations at December 31, 2012 and 2011, by asset category are as follows:

Asset Allocation	2012			2011
Large Capitalization Equity Securities		24.7	%		25.7	%
International Equity Securities		17.8	%		14.4	%
Small and Mid-Capitalization Equity Securities		7.1	%		6.9	%
SEI Dynamic Asset Allocation Fund		4.8	%		4.8	%
Equity Securities		54.4	%		51.8	%
Fixed-Income Securities and Cash		41.1	%		43.4	%
Other - SEI Special Situation Collective Investment Trust		4.5	%		4.8	%
		100.0	%		100.0	%

Fair Value Measurements of Pension Fund Assets

ASC 715, Compensation – Retirement Benefits, requires disclosures about pension plan assets identified by the three levels of the fair value hierarchy established by ASC 820-10-35. The three levels defined by the hierarchy and examples of each level are as follows:

The following table presents, for each of these hierarchy levels, the Company’s pension fund assets measured at fair value as of December 31, 2012 and 2011:

2012 (in thousands)	Level 1		Level 2		Level 3
Large Capitalization Equity Securities	$	47,083
International Equity Securities		34,088
Small and Mid-Capitalization Equity Securities		13,613
SEI Dynamic Asset Allocation Fund		9,177
Fixed Income Securities		78,480
Cash Management – Money Market Fund		11
SEI Special Situation Collective Investment Trust					$	8,566
Total Assets	$	182,452	$	--	$	8,566
2011 (in thousands)
Large Capitalization Equity Securities	$	43,334
International Equity Securities		24,294
Small and Mid-Capitalization Equity Securities		11,567
SEI Dynamic Asset Allocation Fund		8,133
Fixed Income Securities		72,233
Cash Management – Working Capital Account			$	911
SEI Special Situation Collective Investment Trust					$	8,131
Total Assets	$	159,561	$	911	$	8,131

The Company’s level 3 investments in the SEI Special Situation Collective Investment Trust consist of investments primarily in hedge funds that pursue alternative strategies, private equity funds and hybrid funds, as well as investments directly in other securities and financial instruments, with the objective of achieving high returns balanced against an appropriate level of volatility and market exposure over a full market cycle. The net asset value of the SEI Special Situations Collective Investment Trust is determined by using the fair value of the portfolio as of the close of business at the end of the year. The fair value of the fund is calculated independently by the fund’s administrator and is reviewed by the management team. There were no significant transfers between Levels 1, 2 or 3 during the year ended December 31, 2012. The Company’s initial investment in the SEI Special Situation Collective Investment Trust was made in January 2011.

109

Executive Survivor and Supplemental Retirement Plan (ESSRP)

The ESSRP is an unfunded, nonqualified benefit plan for executive officers and certain key management employees. The ESSRP provides defined benefit payments to these employees on their retirements for life or to their beneficiaries on their deaths for a 15-year postretirement period. Life insurance carried on certain plan participants is payable to the Company on the employee’s death. There are no plan assets in this nonqualified benefit plan due to the nature of the plan.

Components of net periodic pension benefit cost:

(in thousands)	2012		2011		2010
Service Cost--Benefit Earned During the Period	$	45	$	81	$	660
Interest Cost on Projected Benefit Obligation		1,479		1,632		1,670
Amortization of Prior Service Cost		73		73		74
Amortization of Net Actuarial Loss		327		245		477
Net Periodic Pension Cost	$	1,924	$	2,031	$	2,881

Weighted-average assumptions used to determine net periodic pension cost for the year ended December 31:

	2012			2011			2010
Discount Rate		5.15	%		6.00	%		6.00	%
Rate of Increase in Future Compensation Level		4.59	%		4.65	%		4.69	%

The following table presents amounts recognized in the consolidated balance sheets as of December 31:

(in thousands)	2012			2011
Regulatory Assets:
Unrecognized Prior Service Cost	$	135		$	215
Unrecognized Actuarial Loss		2,788			2,427
Total Regulatory Assets		2,923			2,642
Projected Benefit Obligation Liability – Net Amount Recognized		(31,925	)		(29,323	)
Accumulated Other Comprehensive Loss:
Unrecognized Prior Service Cost		187			184
Unrecognized Actuarial Loss		3,057			2,067
Total Accumulated Other Comprehensive Loss		3,244			2,251
Deferred Income Taxes		2,163			1,500
Cumulative Employer Contributions in Excess of Net Periodic Benefit Cost	$	(23,595	)	$	(22,930	)

The following tables provide a reconciliation of the changes in the fair value of plan assets and the plan’s projected benefit obligations over the two-year period ended December 31, 2012 and a statement of the funded status as of December 31 of both years:

(in thousands)	2012			2011
Reconciliation of Fair Value of Plan Assets:
Fair Value of Plan Assets at January 1	$	--		$	--
Actual Return on Plan Assets		--			--
Employer Contributions		1,259			1,072
Benefit Payments		(1,259	)		(1,072	)
Fair Value of Plan Assets at December 31	$	--		$	--
Reconciliation of Projected Benefit Obligation:
Projected Benefit Obligation at January 1	$	29,323		$	27,797
Service Cost		45			81
Interest Cost		1,479			1,632
Benefit Payments		(1,259	)		(1,072	)
Plan Amendments		--			--
Actuarial (Gain) Loss		2,337			885
Projected Benefit Obligation at December 31	$	31,925		$	29,323
Reconciliation of Funded Status:
Funded Status at December 31	$	(31,925	)	$	(29,323	)
Unrecognized Net Actuarial Loss		7,882			5,872
Unrecognized Prior Service Cost		448			521
Cumulative Employer Contributions in Excess of Net Periodic Benefit Cost	$	(23,595	)	$	(22,930	)

110

Weighted-average assumptions used to determine benefit obligations at December 31:

	2012			2011
Discount Rate		4.50	%		5.15	%
Rate of Increase in Future Compensation Level		3.19	%		4.59	%

(in thousands)	2013
Decrease in Regulatory Assets:
Amortization of Unrecognized Prior Service Cost	$	22
Amortization of Unrecognized Actuarial Loss		208
Decrease in Accumulated Other Comprehensive Loss:
Amortization of Unrecognized Prior Service Cost		51
Amortization of Unrecognized Actuarial Loss		313
Total Estimated Amortization	$	594

Cash flows — The ESSRP is unfunded and has no assets; contributions are equal to the benefits paid to plan participants. The following benefit payments, which reflect future service, as appropriate, are expected to be paid:

											Years
(in thousands)	2013		2014		2015		2016		2017		2018-2022
	$	1,197	$	1,239	$	1,403	$	1,391	$	1,362	$	7,954

	2012			2011
Healthcare Cost-Trend Rate Assumed for Next Year Pre-65		6.62	%		6.78	%
Healthcare Cost-Trend Rate Assumed for Next Year Post-65		7.01	%		7.21	%
Rate at Which the Cost-Trend Rate is Assumed to Decline		5.00	%		5.00	%
Year the Rate Reaches the Ultimate Trend Rate		2025			2025

(in thousands)	1 Point Increase		1 Point Decrease
Effect on the Postretirement Benefit Obligation	$	7,725	$	(6,401	)
Effect on Total of Service and Interest Cost	$	700	$	(560	)
Effect on Expense	$	1,330	$	(1,088	)

(in thousands)	December 31, 2012		December 31, 2011
Electric Plant in Service
Production	$	672,120	$	669,805
Transmission		261,447		229,320
Distribution		405,461		390,383
General		84,275		83,026
Electric Plant in Service		1,423,303		1,372,534
Construction Work in Progress		75,758		49,123
Total Gross Electric Plant		1,499,061		1,421,657
Less Accumulated Depreciation and Amortization		526,467		499,327
Net Electric Plant	$	972,594	$	922,330
Nonelectric Operations Plant
Equipment	$	144,901	$	137,644
Buildings and Leasehold Improvements		37,209		35,726
Land		3,984		3,958
Nonelectric Operations Plant		186,094		177,328
Construction Work in Progress		2,132		3,628
Total Gross Nonelectric Plant		188,226		180,956
Less Accumulated Depreciation and Amortization		111,368		100,424
Net Nonelectric Operations Plant	$	76,858	$	80,532
Net Plant	$	1,049,452	$	1,002,862

	Service Life Range
(years)	Low		High
Electric Fixed Assets:
Production Plant		34		62
Transmission Plant		40		55
Distribution Plant		15		55
General Plant		5		70
Nonelectric Fixed Assets:
Equipment		3		12
Buildings and Leasehold Improvements		7		40

(in thousands)	Amount		2013		2014		2015		2016			2024-33
United States
Federal Net Operating Losses	$	17,824	$	--	$	--	$	--	$	--	$	17,824
Federal Tax Credits		28,051		--		--		--		--		28,051
State Net Operating Losses		9,955		--		--		--		--		9,955
State Tax Credits		43,400		2,461		1,950		1,950		1,950		35,089

	Number of securities to be issued upon exercise of outstanding options, warrants and rights			Weighted-average exercise price of outstanding options, warrants and rights		Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Plan Category	(a)			(b)		(c)

Equity compensation plans approved by security holders:
1999 Stock Incentive Plan		391,785	(1)	$	6.28		957,359	(2)
1999 Employee Stock Purchase Plan		--			N/A		522,227	(3)

Equity compensation plans not approved by security holders		--			--		--
Total		391,785		$	6.28		1,479,586

		Page
	Report of Independent Registered Public Accounting Firm	63
	Consolidated Balance Sheets, December 31, 2012 and 2011	64
	Consolidated Statements of Income for the Three Years Ended December 31, 2012	66
	Consolidated Statements of Comprehensive Income for the Three Years Ended December 31, 2012	67
	Consolidated Statements of Common Shareholders’ Equity for the Three Years Ended December 31, 2012	68
	Consolidated Statements of Cash Flows for the Three Years Ended December 31, 2012	69
	Consolidated Statements of Capitalization, December 31, 2012 and 2011	70
	Notes to Consolidated Financial Statements	71

SCHEDULE 1 - CONDENSED FINANCIAL INFORMATION OF REGISTRANT
OTTER TAIL CORPORATION (PARENT COMPANY)
Condensed Balance Sheets, December 31
(in thousands)	2012		2011

ASSETS

Current Assets
Cash and Cash Equivalents	$	44,802	$	7,062
Accounts Receivable from Subsidiaries		3,587		5,795
Interest Receivable from Subsidiaries		317		361
Notes Receivable from Subsidiaries		17,157		145,205
Other		16,384		9,580
Total Current Assets		82,247		168,003

Investments in Subsidiaries		716,453		613,380
Notes Receivable from Subsidiaries		67,925		128,818
Deferred Income Taxes		18,042		16,515
Other Assets		24,584		26,371

Total Assets	$	909,251	$	953,087

LIABILITIES AND EQUITY

Current Liabilities
Accounts Payable to Subsidiaries	$	5,035	$	3,725
Notes Payable to Subsidiaries		231,611		181,100
Other		6,223		5,432
Total Current Liabilities		242,869		190,257

Other Noncurrent Liabilities		27,363		24,162

Commitments and Contingencies

Capitalization
Long-Term Debt, Net of Current Maturities		101,545		151,720
Cumulative Preferred Shares		15,500		15,500
Common Shareholder Equity		521,974		571,448

Total Capitalization		639,019		738,668

Total Liabilities and Equity	$	909,251	$	953,087
See accompanying notes to condensed financial statements.

OTTER TAIL CORPORATION (PARENT COMPANY)
Condensed Statements of Income--For the Years Ended December 31
(in thousands)	2012			2011			2010

Operating Income (Loss)
Revenue	$	--		$	--		$	--
Operating Expenses		15,197			15,798			17,409
Operating Loss		(15,197	)		(15,798	)		(17,409	)

Other Income (Expense)
Equity Income (Loss) in Earnings of Subsidiaries		8,430			(4,205	)		8,998
Loss on Early Retirement of Debt		(13,106	)		--			--
Interest Charges		(13,994	)		(17,157	)		(17,084	)
Interest Charges to Subsidiaries		(512	)		(290	)		(16	)
Interest Income from Subsidiaries		15,700			18,006			15,887
Other Income		1,426			548			682
Total Other Income (Expense)		(2,056	)		(3,098	)		8,467

Income Before Income Taxes – Continuing Operations		(17,253	)		(18,896	)		(8,942	)
Income Tax Benefit		(11,980	)		(5,653	)		(7,598	)
Net Loss from Continuing Operations		(5,273	)		(13,243	)		(1,344	)
Net Loss from Discontinued Operations		--			--			--
Total Net Loss		(5,273	)		(13,243	)		(1,344	)
Preferred Dividend Requirement and Other Adjustments		736			1,058			833
Loss Available for Common Shares	$	(6,009	)	$	(14,301	)	$	(2,177	)
See accompanying notes to condensed financial statements.

OTTER TAIL CORPORATION (PARENT COMPANY)
Condensed Statements of Cash Flows--For the Years Ended December 31
(in thousands)	2012			2011			2010
Cash Flows from Operating Activities
Net Cash Provided by Operating Activities	$	43,904		$	30,833		$	34,220

Cash Flows from Investing Activities
Investment in Subsidiaries		(137,726	)		(24,534	)		(5,000	)
Debt Repaid by (Issued to) Subsidiaries		239,452			98,521			(38,890	)
Cash Used in Investing Activities		(69	)		(99	)		(686	)
Net Cash Provided by (Used in) Investing Activities		101,657			73,888			(44,576	)

Cash Flows from Financing Activities
Change in Checks Written in Excess of Cash		-			(253	)		253
Net Short-Term (Repayments) Borrowings		-			(54,176	)		48,176
Proceeds from Issuance of Common Stock		-			-			549
Common Stock Issuance Expenses		(370	)		-			(141	)
Payments for Retirement of Common Stock		(111	)		(1,182	)		(401	)
Proceeds from Issuance of Long-Term Debt		-			2,006			-
Short-Term and Long-Term Debt Issuance Expenses		(700	)		(14	)		(1,674	)
Payments for Retirement of Long-Term Debt		(50,164	)		(117	)		-
Premium Paid for Early Retirement of Long-Term Debt		(12,500	)		-			-
Dividends Paid and Other Distributions		(43,976	)		(43,923	)		(43,698	)
Net Cash Used in Financing Activities		(107,821	)		(97,659	)		3,064
Net Change in Cash and Cash Equivalents		37,740			7,062			(7,292	)
Cash and Cash Equivalents at Beginning of Period		7,062			-			7,292
Cash and Cash Equivalents at End of Period	$	44,802		$	7,062		$	-
See accompanying notes to condensed financial statements.

(in thousands)	Accounts Receivable		Interest Receivable		Current Notes Receivable		Long- Term Notes Receivable		Accounts Payable		Current Notes Payable
Otter Tail Power Company	$	1,201	$	--	$	--	$	15,500	$	160	$	--
Vinyltech Corporation		2		32		--		8,500		--		8,251
Northern Pipe Products, Inc.		--		9		--		3,725		--		10,537
BTD Manufacturing, Inc.		41		107		--		28,500		--		1,773
DMI Industries, Inc.		20		113		1,461		--		--		--
ShoreMaster, Inc.		40		12		15,696		--		--		--
T.O. Plastic, Inc.		--		28		--		7,400		--		2,986
Aevenia, Inc		50		7		--		1,800		--		1,480
Foley Company		40		9		--		2,500		--		1,189
Varistar Corporation		2,050		--		--		--		4,875		205,329
Otter Tail Energy Services Company		--		--		--		--		--		66
Otter Tail Assurance Limited		143		--		--		--		--		--
	$	3,587	$	317	$	17,157	$	67,925	$	5,035	$	231,611

		Previously Filed
	File No.	As Exhibit No .
2-A	8-K filed 7/1/09	2.1	—Plan of Merger, dated as of June 30, 2009, by and among Otter Tail Corporation (now known as Otter Tail Power Company), Otter Tail Holding Company (now known as Otter Tail Corporation) and Otter Tail Merger Sub Inc.
3-A	8-K filed 7/1/09	3.1	—Restated Articles of Incorporation.
3-B	8-K filed 7/1/09	3.2	—Restated Bylaws.
4-A	8-K filed 8/23/07	4.1	—Note Purchase Agreement, dated as of August 20, 2007.
4-A-1	8-K filed 12/20/07	4.3	—First Amendment, dated as of December 14, 2007, to Note Purchase Agreement, dated as of August 20, 2007.
4-A-2	8-K filed 9/15/08	4.1	—Second Amendment, dated as of September 11, 2008, to Note Purchase Agreement, dated as of August 20, 2007.
4-A-3	8-K filed 7/1/09	4.2	—Third Amendment, dated as of June 26, 2009, to Note Purchase Agreement dated as of August 20, 2007.
4-B	8-K filed 11/2/12	4.1	—Third Amended and Restated Credit Agreement dated as of October 29, 2012 among Otter Tail Corporation, the Banks named therein, Bank of America, N.A. and JPMorgan Chase Bank, N.A., as Co-Syndication Agents, KeyBank National Association, as Documentation Agent, U.S. Bank National Association, as administration agent for the Banks and U.S. Bank National Association, Merrill Lynch, Pierce, Fenner & Smith Incorporated and J.P. Morgan Securities LLC, as Joint Lead Arrangers and Joint Book Runners
4-C	8-K filed 11/2/12	4.2	— Second Amended and Restated Credit Agreement dated as of October 29, 2012 among Otter Tail Power Company, the Banks named therein, JPMorgan Chase Bank, N.A. and Bank of America, N.A., as Co-Syndication Agents, KeyBank National Association and CoBank, ACB, as Co-Documentation Agents, U.S. Bank National Association, as administrative agent for the Banks, and U.S. Bank National Association, Merrill Lynch, Pierce, Fenner & Smith Incorporated and J.P. Morgan Securities LLC, as Joint Lead Arrangers and Joint Book Runners.
4-D	8-K filed 8/3/11	4.1	—Note Purchase Agreement, dated as of July 29, 2011, between Otter Tail Power Company and the Purchasers named therein.
4-E	8-K filed 11/18/97	4-D-11	—Indenture (For Unsecured Debt Securities) dated as of November 1, 1997 between the registrant and U.S. Bank National Association (formerly First Trust National Association), as Trustee.
4-F-1	8-K filed 7/1/09	4.1	—First Supplemental Indenture, dated as of July 1, 2009, to the Indenture (For Unsecured Debt Securities) dated as of November 1, 1997.

	File No.	Previously Filed As Exhibit No .
4-F-2	8-K filed 12/4/09	4.1	—Officer’s Certificate and Authentication Order, dated December 4, 2009, for the 9.000% Notes due 2016 (which includes the form of Note) issued pursuant to the Indenture (For Unsecured Debt Securities) dated as of November 1, 1997 and the First Supplemental Indenture thereto, dated as of July 1, 2009.
10-A	2-39794	4-C	—Integrated Transmission Agreement, dated August 25, 1967, between Cooperative Power Association and the Company.
10-A-1	10-K for year ended 12/31/92	10-A-1	—Amendment No. 1, dated as of September 6, 1979, to Integrated Transmission Agreement, dated as of August 25, 1967, between Cooperative Power Association and the Company.
10-A-2	10-K for year ended 12/31/92	10-A-2	—Amendment No. 2, dated as of November 19, 1986, to Integrated Transmission Agreement between Cooperative Power Association and the Company.
10-C-1	2-55813	5-E	—Contract dated July 1, 1958, between Central Power Electric Corporation, Inc., and the Company.
10-C-2	2-55813	5-E-1	—Supplement Seven dated November 21, 1973. (Supplements Nos. One through Six have been superseded and are no longer in effect.)
10-C-3	2-55813	5-E-2	—Amendment No. 1 dated December 19, 1973, to Supplement Seven.
10-C-4	10-K for year ended 12/31/91	10-C-4	—Amendment No. 2 dated June 17, 1986, to Supplement Seven.
10-C-5	10-K for year ended 12/31/92	10-C-5	—Amendment No. 3 dated June 18, 1992, to Supplement Seven.
10-C-6	10-K for year ended 12/31/93	10-C-6	—Amendment No. 4 dated January 18, 1994 to Supplement Seven.
10-D	2-55813	5-F	—Contract dated April 12, 1973, between the Bureau of Reclamation and the Company.
10-E-1	2-55813	5-G	—Contract dated January 8, 1973, between East River Electric Power Cooperative and the Company.
10-E-2	2-62815	5-E-1	—Supplement One dated February 20, 1978.
10-E-3	10-K for year ended 12/31/89	10-E-3	—Supplement Two dated June 10, 1983.
10-E-4	10-K for year ended 12/31/90	10-E-4	—Supplement Three dated June 6, 1985.
10-E-5	10-K for year ended 12/31/92	10-E-5	—Supplement No. Four, dated as of September 10, 1986.
10-E-6	10-K for year ended 12/31/92	10-E-6	—Supplement No. Five, dated as of January 7, 1993.
10-E-7	10-K for year ended 12/31/93	10-E-7	—Supplement No. Six, dated as of December 2, 1993.
10-F	10-K for year ended 12/31/89	10-F	—Agreement for Sharing Ownership of Generating Plant by and between the Company, Montana-Dakota Utilities Co., and Northwestern Public Service Company (dated as of January 7, 1970).
10-F-1	10-K for year ended 12/31/89	10-F-1	—Letter of Intent for purchase of share of Big Stone Plant from Northwestern Public Service Company (dated as of May 8, 1984).
10-F-2	10-K for year ended 12/31/91	10-F-2	—Supplemental Agreement No. 1 to Agreement for Sharing Ownership of Big Stone Plant (dated as of July 1, 1983).
10-F-3	10-K for year ended 12/31/91	10-F-3	—Supplemental Agreement No. 2 to Agreement for Sharing Ownership of Big Stone Plant (dated as of March 1, 1985).
10-F-4	10-K for year ended 12/31/91	10-F-4	—Supplemental Agreement No. 3 to Agreement for Sharing Ownership of Big Stone Plant (dated as of March 31, 1986).

	File No.	Previously Filed As Exhibit No .
10-F-5	10-Q for quarter ended 9/30/03	10.1	—Supplemental Agreement No. 4 to Agreement for Sharing Ownership of Big Stone Plant (dated as of April 24, 2003).
10-F-6	10-K for year ended 12/31/92	10-F-5	—Amendment I to Letter of Intent dated May 8, 1984, for purchase of share of Big Stone Plant.
10-G	10-Q for quarter ended 06/30/04	10.3	—Master Coal Purchase and Sale Agreement by and between the Company, Montana-Dakota Utilities Co., Northwestern Corporation and Kennecott Coal Sales Company-Big Stone Plant (dated as of June 1, 2004).
10-H	2-61043	5-H	—Agreement for Sharing Ownership of Coyote Station Generating Unit No. 1 by and between the Company, Minnkota Power Cooperative, Inc., Montana-Dakota Utilities Co., Northwestern Public Service Company and Minnesota Power & Light Company (dated as of July 1, 1977).
10-H-1	10-K for year ended 12/31/89	10-H-1	—Supplemental Agreement No. One, dated as of November 30, 1978, to Agreement for Sharing Ownership of Coyote Generating Unit No. 1.
10-H-2	10-K for year ended 12/31/89	10-H-2	—Supplemental Agreement No. Two, dated as of March 1, 1981, to Agreement for Sharing Ownership of Coyote Generating Unit No. 1 and Amendment No. 2 dated March 1, 1981, to Coyote Plant Coal Agreement.
10-H-3	10-K for year ended 12/31/89	10-H-3	—Amendment, dated as of July 29, 1983, to Agreement for Sharing Ownership of Coyote Generating Unit No. 1.
10-H-4	10-K for year ended 12/31/92	10-H-4	—Agreement, dated as of September 5, 1985, containing Amendment No. 3 to Agreement for Sharing Ownership of Coyote Generating Unit No. 1, dated as of July 1, 1977, and Amendment No. 5 to Coyote Plant Coal Agreement, dated as of January 1, 1978.
10-H-5	10-Q for quarter ended 9/30/01	10-A	—Amendment, dated as of June 14, 2001, to Agreement for Sharing Ownership of Coyote Generating Unit No. 1.
10-H-6	10-Q for quarter ended 9/30/03	10.2	—Amendment, dated as of April 24, 2003, to Agreement for Sharing Ownership of Coyote Generating Unit No. 1.
10-I	2-63744	5-I	—Coyote Plant Coal Agreement by and between the Company, Minnkota Power Cooperative, Inc., Montana-Dakota Utilities Co., Northwestern Public Service Company, Minnesota Power & Light Company, and Knife River Coal Mining Company (dated as of January 1, 1978).
10-I-1	10-K for year ended 12/31/92	10-I-1	—Addendum, dated as of March 10, 1980, to Coyote Plant Coal Agreement.
10-I-2	10-K for year ended 12/31/92	10-I-2	—Amendment (No. 3), dated as of May 28, 1980, to Coyote Plant Coal Agreement.
10-I-3	10-K for year ended 12/31/92	10-I-3	—Fourth Amendment, dated as of August 19, 1985, to Coyote Plant Coal Agreement.
10-I-4	10-Q for quarter ended 6/30/93	19-A	—Sixth Amendment, dated as of February 17, 1993, to Coyote Plant Coal Agreement.
10-I-5	10-K for year ended 12/31/01	10-I-5	—Agreement and Consent to Assignment of the Coyote Plant Coal Agreement.
10-J			—Lignite Sale Agreement between Coyote Creek Coal Mining Company, L.L.C. and Otter Tail Power Company, Northern Municipal Power Agency, Montana-Dakota Utilities Co., Northwestern Corporation, dated as of October 10, 2012.**
10-K	10-K for year ended 12/31/91	10-L	—Integrated Transmission Agreement by and between the Company, Missouri Basin Municipal Power Agency and Western Minnesota Municipal Power Agency (dated as of March 31, 1986).
10-K-1	10-K for year ended 12/31/88	10-L-1	—Amendment No. 1, dated as of December 28, 1988, to Integrated Transmission Agreement (dated as of March 31, 1986).

	File No.	Previously Filed As Exhibit No .
10-P-3	10-K for year ended 12/31/11	10-Q-5	—Change in Control Severance Agreement, Chuck MacFarlane.*
10-P-4	10-K for year ended 12/31/11	10-Q-6	—Change in Control Severance Agreement, Shane Waslaski.*
10-P-5	10-K for year ended 12/31/11	10-Q-7	—Change in Control Severance Agreement, Edward J. McIntyre.*
12.1			—Calculation of Ratios of Earnings to Fixed Charges and Preferred Dividends.
21-A			—Subsidiaries of Registrant.
23-A			—Consent of Deloitte & Touche LLP.
24-A			—Powers of Attorney.
31.1			—Certification of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2			—Certification of Chief Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1			—Certification of Chief Executive Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2			—Certification of Chief Financial Officer Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS			—XBRL Instance Document
101.SCH			—XBRL Taxonomy Extension Schema Document
101.CAL			—XBRL Taxonomy Extension Calculation Linkbase Document
101.LAB			—XBRL Taxonomy Extension Label Linkbase Document
101.PRE			—XBRL Taxonomy Extension Presentation Linkbase Document
101.DEF			—XBRL Taxonomy Extension Definition Linkbase Document

	OTTER TAIL CORPORATION

	By	/s/ Kevin G. Moug
		Kevin G. Moug
		Chief Financial Officer and Senior Vice President
		(authorized officer and principal financial officer)
	Dated: February 27, 2013

Edward J. McIntyre	)
Chief Executive Officer and President	)
(principal executive officer) and Director	)
	)
Kevin G. Moug	)
Chief Financial Officer and Senior Vice President	)
(principal financial and accounting officer)	)
	) By	/s/ Edward J. McIntyre
Nathan I. Partain	)	Edward J. McIntyre
Chairman of the Board and Director	)	Pro Se and Attorney-in-Fact
	)	Dated February 27, 2013
Karen M. Bohn, Director	)
	)
John D. Erickson, Director	)
	)
Arvid R. Liebe, Director	)
	)
Joyce Nelson Schuette, Director	)
	)
Mark W. Olson, Director	)
	)
Gary J. Spies, Director	)
	)
James B. Stake, Director	)

OTTR 10-K Fiscal year ended Dec. 31, 2012