10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

x	QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
	EXCHANGE ACT OF 1934
	For the quarterly period ended June 30, 2014
OR
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 001-31303

Black Hills Corporation
Incorporated in South Dakota	IRS Identification Number 46-0458824
625 Ninth Street
Rapid City, South Dakota 57701
Registrant’s telephone number (605) 721-1700
Former name, former address, and former fiscal year if changed since last report
NONE

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 website, 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 whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company (as defined in Rule 12b-2 of the Exchange Act).

Large accelerated filer x Accelerated filer o

Non-accelerated filer o Smaller reporting company o

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

Indicate the number of shares outstanding of each of the issuer’s classes of common stock as of the latest practicable date.

Class	Outstanding at July 31, 2014
Common stock, $1.00 par value	44,641,421	shares

TABLE OF CONTENTS
		Page
	Glossary of Terms and Abbreviations	3
PART I.	FINANCIAL INFORMATION	5
Item 1.	Financial Statements	5
	Condensed Consolidated Statements of Income (Loss) - unaudited
	Three and Six Months Ended June 30, 2014 and 2013	5
	Condensed Consolidated Statements of Comprehensive Income (Loss) - unaudited
	Three and Six Months Ended June 30, 2014 and 2013	6
	Condensed Consolidated Balance Sheets - unaudited
	June 30, 2014, December 31, 2013 and June 30, 2013	7
	Condensed Consolidated Statements of Cash Flows - unaudited
	Six Months Ended June 30, 2014 and 2013	9
	Notes to Condensed Consolidated Financial Statements - unaudited	10
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	30
Item 3.	Quantitative and Qualitative Disclosures about Market Risk	60
Item 4.	Controls and Procedures	61
PART II.	OTHER INFORMATION	62
Item 1.	Legal Proceedings	62
Item 1A.	Risk Factors	62
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	63
Item 4.	Mine Safety Disclosures	63
Item 5.	Other Information	63
Item 6.	Exhibits	63
	Signatures	65
	Index to Exhibits	66

2

GLOSSARY OF TERMS AND ABBREVIATIONS

The following terms and abbreviations appear in the text of this report and have the definitions described below:

AFUDC	Allowance for Funds Used During Construction
AOCI	Accumulated Other Comprehensive Income (Loss)
ASU	Accounting Standards Update issued by the FASB
Bbl	Barrel
BHC	Black Hills Corporation; the Company
Black Hills Electric Generation	Black Hills Electric Generation, LLC, a direct, wholly-owned subsidiary of Black Hills Non-regulated Holdings
Black Hills Energy	The name used to conduct the business of Black Hills Utility Holdings, Inc., and its subsidiaries
Black Hills Non-regulated Holdings	Black Hills Non-regulated Holdings, LLC, a direct, wholly-owned subsidiary of Black Hills Corporation
Black Hills Power	Black Hills Power, Inc., a direct, wholly-owned subsidiary of Black Hills Corporation
Black Hills Utility Holdings	Black Hills Utility Holdings, Inc., a direct, wholly-owned subsidiary of Black Hills Corporation
Black Hills Wyoming	Black Hills Wyoming, LLC, a direct, wholly-owned subsidiary of Black Hills Electric Generation
Btu	British thermal unit
Cheyenne Light	Cheyenne Light, Fuel and Power Company, a direct, wholly-owned subsidiary of Black Hills Corporation
Cheyenne Prairie	Cheyenne Prairie Generating Station currently being constructed in Cheyenne, Wyoming by Cheyenne Light and Black Hills Power. Construction is expected to be completed for this 132 megawatt facility in 2014.
Colorado Electric	Black Hills Colorado Electric Utility Company, LP (doing business as Black Hills Energy), an indirect, wholly-owned subsidiary of Black Hills Utility Holdings
Colorado IPP	Black Hills Colorado IPP, LLC a direct wholly-owned subsidiary of Black Hills Electric Generation
Cooling degree day	A cooling degree day is equivalent to each degree that the average of the high and low temperature for a day is above 65 degrees. The warmer the climate, the greater the number of cooling degree days. Cooling degree days are used in the utility industry to measure the relative warmth of weather and to compare relative temperatures between one geographic area and another. Normal degree days are based on the National Weather Service data for selected locations over a 30-year average.
Conflict Minerals	As defined by Dodd-Frank, conflict minerals are cassiterite, columbite-tantalite, gold and wolframite that are mined in the Democratic Republic of the Congo or surrounding countries
CPCN	Certificate of Public Convenience and Necessity
CPUC	Colorado Public Utilities Commission
CT	Combustion turbine
CVA	Credit Valuation Adjustment
De-designated interest rate swaps	The $250 million notional amount interest rate swaps that were originally designated as cash flow hedges under accounting for derivatives and hedges but subsequently de-designated in December 2008. These swaps were settled in November 2013.
Dth	Dekatherm. A unit of energy equal to 10 therms or one million British thermal units (MMBtu)
EPA	United States Environmental Protection Agency
FASB	Financial Accounting Standards Board
FERC	United States Federal Energy Regulatory Commission
Fitch	Fitch Ratings
GAAP	Accounting principles generally accepted in the United States of America
GCA	Gas Cost Adjustment -- adjustments that allow us to pass the prudently-incurred cost of gas and certain services through to customers.

3

Heating Degree Day	A heating degree day is equivalent to each degree that the average of the high and the low temperatures for a day is below 65 degrees. The colder the climate, the greater the number of heating degree days. Heating degree days are used in the utility industry to measure the relative coldness of weather and to compare relative temperatures between one geographic area and another. Normal degree days are based on the National Weather Service data for selected locations over a 30-year average.
IPP	Independent power producer
IRS	United States Internal Revenue Service
IUB	Iowa Utilities Board
Kansas Gas	Black Hills Kansas Gas Utility Company, LLC (doing business as Black Hills Energy), a direct, wholly-owned subsidiary of Black Hills Utility Holdings
KCC	Kansas Corporation Commission
kV	Kilovolt
LIBOR	London Interbank Offered Rate
LOE	Lease Operating Expense
Mcf	Thousand cubic feet
Mcfe	Thousand cubic feet equivalent.
MMBtu	Million British thermal units
Moody’s	Moody’s Investors Service, Inc.
MW	Megawatts
MWh	Megawatt-hours
NGL	Natural Gas Liquids (7 Gallons equals 1 Mcfe)
NOAA	National Oceanic and Atmospheric Administration
NOAA Climate Normals	This dataset is produced once every 10 years. This dataset contains daily and monthly normals of temperature, precipitation, snowfall, heating and cooling degree days, frost/freeze dates, and growing degree days calculated from observations at approximately 9,800 stations operated by NOAA’s National Weather Service.
NOL	Net Operating Loss
OTC	Over-the-counter
PPA	Power Purchase Agreement
Revolving Credit Facility	Our $500 million credit facility used to fund working capital needs, letters of credit and other corporate purposes, which matures in 2019.
SDPUC	South Dakota Public Utilities Commission
SEC	U. S. Securities and Exchange Commission
S&P	Standard and Poor’s, a division of The McGraw-Hill Companies, Inc.
WPSC	Wyoming Public Service Commission
WRDC	Wyodak Resources Development Corp., a direct, wholly-owned subsidiary of Black Hills Non-regulated Holdings

4

BLACK HILLS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (LOSS)

(unaudited)	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
	(in thousands, except per share amounts)
Revenue	$	283,237		$	279,826		$	743,406		$	660,497
Operating expenses:
Utilities -
Fuel, purchased power and cost of natural gas sold	101,331			99,172			331,799			267,345
Operations and maintenance	66,074			64,977			137,301			130,667
Non-regulated energy operations and maintenance	21,350			20,890			43,682			42,219
Depreciation, depletion and amortization	36,712			35,152			72,795			69,933
Taxes - property, production and severance	11,044			10,069			21,380			20,449
Other operating expenses	149			529			274			1,001
Total operating expenses	236,660			230,789			607,231			531,614
Operating income	46,577			49,037			136,175			128,883
Other income (expense):
Interest charges -
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts and realized settlements on interest rate swaps)	(17,886		)	(23,369		)	(35,746		)	(47,041		)
Allowance for funds used during construction - borrowed	256			411			526			484
Capitalized interest	246			272			503			538
Unrealized gain (loss) on interest rate swaps, net	—			18,793			—			26,249
Interest income	576			475			966			760
Allowance for funds used during construction - equity	293			42			531			242
Other income (expense), net	409			473			1,000			879
Total other income (expense), net	(16,106		)	(2,903		)	(32,220		)	(17,889		)
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	30,471			46,134			103,955			110,994
Equity in earnings (loss) of unconsolidated subsidiaries	—			—			—			(86		)
Income tax benefit (expense)	(10,651		)	(15,616		)	(36,017		)	(37,193		)
Net income (loss) available for common stock	$	19,820		$	30,518		$	67,938		$	73,715
Earnings (loss) per share of common stock:
Earnings (loss) per share, Basic -
Total income (loss) per share, Basic	$	0.45		$	0.69		$	1.53		$	1.67
Earnings (loss) per share, Diluted -
Total income (loss) per share, Diluted	$	0.44		$	0.69		$	1.52		$	1.66
Weighted average common shares outstanding:
Basic	44,399			44,172			44,365			44,113
Diluted	44,588			44,412			44,571			44,363
Dividends paid per share of common stock	$	0.39		$	0.38		$	0.78		$	0.76

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these Condensed Consolidated Financial Statements.

5

BLACK HILLS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(unaudited)	Three Months Ended June 30,					Six Months Ended June 30,
	2014			2013		2014			2013
	(in thousands)
Net income (loss) available for common stock	$	19,820		$	30,518	$	67,938		$	73,715
Other comprehensive income (loss), net of tax:
Fair value adjustments on derivatives designated as cash flow hedges (net of tax (expense) benefit of $1,115 and $(2,174) for the three months ended 2014 and 2013 and $2,422 and $(1,057) for the six months ended 2014 and 2013, respectively)	(1,959		)	3,878		(4,216		)	2,217
Reclassification adjustments for cash flow hedges settled and included in net income (loss) (net of tax (expense) benefit of $(774) and $(647) for the three months ended 2014 and 2013 and $(1,199) and $(883) for the six months ended 2014 and 2013, respectively)	1,403			1,201		2,183			1,669
Benefit plan liability adjustments - net gain (loss) (net of tax of $0 and $0 for the three months ended 2014 and 2013 and $2 and $0 for the six months ended 2014 and 2013, respectively)	—			—		(2		)	—
Benefit plan liability tax adjustments - net gain (loss)	(394		)	—		(394		)	—
Benefit plan liability adjustments - prior service cost (net of tax of $0 and $0 for the three months ended 2014 and 2013 and $(90) and $0 for the six months ended 2014 and 2013, respectively)	—			—		164			—
Reclassification adjustments of benefit plan liability - prior service cost (net of tax of $39 and $(268) for the three months ended 2014 and 2013 and $43 and $(251) for the six months ended 2014 and 2013, respectively)	(70		)	364		(79		)	318
Reclassification adjustments of benefit plan liability - net gain (loss) (net of tax of $(91) and $0 for the three months ended 2014 and 2013 and $(176) and $(192) for the six months ended 2014 and 2013, respectively)	168			—		325			503
Other comprehensive income (loss), net of tax	(852		)	5,443		(2,019		)	4,707
Comprehensive income (loss) available for common stock	$	18,968		$	35,961	$	65,919		$	78,422

See Note 11 for additional disclosures.

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these Condensed Consolidated Financial Statements.

6

BLACK HILLS CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(unaudited)	As of
	June 30, 2014			December 31, 2013			June 30, 2013
	(in thousands)
ASSETS
Current assets:
Cash and cash equivalents	$	14,697		$	7,841		$	30,633
Restricted cash and equivalents	2			2			7,279
Accounts receivable, net	135,145			177,573			132,726
Materials, supplies and fuel	81,164			88,478			73,768
Derivative assets, current	1,737			717			903
Income tax receivable, net	1,043			1,460			146
Deferred income tax assets, net, current	23,872			18,889			38,764
Regulatory assets, current	64,735			24,451			26,258
Other current assets	21,660			25,877			27,595
Total current assets	344,055			345,288			338,072
Investments	17,096			16,697			16,566
Property, plant and equipment	4,408,291			4,259,445			4,066,502
Less: accumulated depreciation and depletion	(1,325,660		)	(1,269,148		)	(1,234,578		)
Total property, plant and equipment, net	3,082,631			2,990,297			2,831,924
Other assets:
Goodwill	353,396			353,396			353,396
Intangible assets, net	3,286			3,397			3,508
Regulatory assets, non-current	138,226			138,197			180,646
Other assets, non-current	31,808			27,906			22,402
Total other assets, non-current	526,716			522,896			559,952
TOTAL ASSETS	$	3,970,498		$	3,875,178		$	3,746,514

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these Condensed Consolidated Financial Statements.

7

BLACK HILLS CORPORATION

CONDENSED CONSOLIDATED BALANCE SHEETS

(Continued)

(unaudited)	As of
	June 30, 2014			December 31, 2013			June 30, 2013
	(in thousands, except share amounts)
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Accounts payable	$	100,098		$	130,416		$	88,071
Accrued liabilities	141,177			151,277			135,819
Derivative liabilities, current	3,480			3,474			69,270
Regulatory liabilities, current	828			10,727			20,550
Notes payable	132,700			82,500			100,000
Current maturities of long-term debt	275,000			—			255,507
Total current liabilities	653,283			378,394			669,217
Long-term debt, net of current maturities	1,121,950			1,396,948			958,559
Deferred credits and other liabilities:
Deferred income tax liabilities, net, non-current	476,059			432,287			387,674
Derivative liabilities, non-current	4,251			5,614			12,384
Regulatory liabilities, non-current	119,462			109,429			129,013
Benefit plan liabilities	116,403			111,479			177,216
Other deferred credits and other liabilities	137,765			133,279			129,763
Total deferred credits and other liabilities	853,940			792,088			836,050
Commitments and contingencies (See Notes 7, 8, 13, 14 and 15)
Stockholders’ equity:
Common stock equity —
Common stock $1 par value; 100,000,000 shares authorized; issued 44,682,885; 44,550,239; and 44,516,472 shares, respectively	44,683			44,550			44,517
Additional paid-in capital	744,505			742,344			737,729
Retained earnings	573,379			540,244			532,810
Treasury stock, at cost – 40,951; 50,877; and 42,480 shares, respectively	(1,801		)	(1,968		)	(1,587		)
Accumulated other comprehensive income (loss)	(19,441		)	(17,422		)	(30,781		)
Total stockholders’ equity	1,341,325			1,307,748			1,282,688
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$	3,970,498		$	3,875,178		$	3,746,514

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these Condensed Consolidated Financial Statements.

8

BLACK HILLS CORPORATION

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited)	Six Months Ended June 30,
	2014			2013
Operating activities:	(in thousands)
Net income (loss) available for common stock	$	67,938		$	73,715
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	72,795			69,933
Deferred financing cost amortization	1,107			2,188
Derivative fair value adjustments	(1,660		)	4,248
Stock compensation	6,908			6,896
Unrealized (gain) loss on interest rate swaps, net	—			(26,249		)
Deferred income taxes	35,514			36,607
Employee benefit plans	7,409			11,096
Other adjustments, net	1,481			8,967
Changes in certain operating assets and liabilities:
Materials, supplies and fuel	7,314			8,940
Accounts receivable, unbilled revenues and other operating assets	(5,851		)	28,377
Accounts payable and other operating liabilities	(24,978		)	(26,739		)
Other operating activities, net	5,858			(594		)
Net cash provided by (used in) operating activities	173,835			197,385
Investing activities:
Property, plant and equipment additions	(177,302		)	(147,230		)
Other investing activities	(2,994		)	2,006
Net cash provided by (used in) investing activities	(180,296		)	(145,224		)
Financing activities:
Dividends paid on common stock	(34,803		)	(33,774		)
Common stock issued	1,693			2,570
Short-term borrowings - issuances	214,100			133,300
Short-term borrowings - repayments	(163,900		)	(310,300		)
Long-term debt - issuances	—			275,000
Long-term debt - repayments	—			(103,786		)
Other financing activities	(3,773		)	—
Net cash provided by (used in) financing activities	13,317			(36,990		)
Net change in cash and cash equivalents	6,856			15,171
Cash and cash equivalents, beginning of period	7,841			15,462
Cash and cash equivalents, end of period	$	14,697		$	30,633

See Note 12 for supplemental disclosure of cash flow information.

The accompanying Notes to Condensed Consolidated Financial Statements are an integral part of these Condensed Consolidated Financial Statements.

9

BLACK HILLS CORPORATION

Notes to Condensed Consolidated Financial Statements

(unaudited)

(Reference is made to Notes to Consolidated Financial Statements

included in the Company’s 2013 Annual Report on Form 10-K)

(1)    MANAGEMENT’S STATEMENT

The unaudited Condensed Consolidated Financial Statements included herein have been prepared by Black Hills Corporation (together with our subsidiaries the “Company,” “us,” “we,” or “our”), pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations; however, we believe that the footnotes adequately disclose the information presented. These Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our 2013 Annual Report on Form 10-K filed with the SEC.

We conduct our operations through the following reportable segments: Electric Utilities, Gas Utilities, Power Generation, Coal Mining and Oil and Gas. Our reportable segments are based on our method of internal reporting, which generally segregates the strategic business groups due to differences in products, services and regulation. All of our operations and assets are located within the United States.

Accounting methods historically employed require certain estimates as of interim dates. The information furnished in the accompanying Condensed Consolidated Financial Statements reflects all adjustments, including accruals, which are, in the opinion of management, necessary for a fair presentation of the June 30, 2014, December 31, 2013, and June 30, 2013 financial information and are of a normal recurring nature. Certain industries in which we operate are highly seasonal, and revenue from, and certain expenses for, such operations may fluctuate significantly among quarterly periods. Demand for electricity and natural gas is sensitive to seasonal cooling, heating and industrial load requirements, as well as changes in market price. In particular, the normal peak usage season for electric utilities is June through August while the normal peak usage season for gas utilities is November through March. Significant earnings variances can be expected between the Gas Utilities segment’s peak and off-peak seasons. Due to this seasonal nature, our results of operations for the three and six months ended June 30, 2014 and June 30, 2013, and our financial condition as of June 30, 2014, December 31, 2013, and June 30, 2013, are not necessarily indicative of the results of operations and financial condition to be expected as of or for any other period. All earnings per share amounts discussed refer to diluted earnings per share unless otherwise noted.

Recently Issued and Adopted Accounting Standards

We have implemented all new accounting pronouncements that are in effect and may impact our financial statements and do not believe that there are any other new accounting pronouncements that have been issued that might have a material impact on our financial position, results of operations, or cash flows.

Revenue from Contracts with Customers, ASU 2014-09

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer, as opposed to recognizing revenue when the risks and rewards transfer to the customer under the existing revenue guidance. ASU 2014-09 is effective for annual and interim reporting periods beginning after December 15, 2016 and early adoption is not permitted. We are currently assessing the impact, if any, that ASU 2014-09 will have on our financial position, results of operations, or cash flows.

10

(2)    BUSINESS SEGMENT INFORMATION

Segment information and Corporate activities included in the accompanying Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	158,740	$	3,144		$	11,427
Gas	102,499		—			1,994
Non-regulated Energy:
Power Generation	1,267		20,713			7,194
Coal Mining	5,583		9,068			2,016
Oil and Gas	15,148		—			(1,660		)
Corporate activities	—		—			(1,151		)
Inter-company eliminations	—		(32,925		)	—
Total	$	283,237	$	—		$	19,820

Three Months Ended June 30, 2013	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	154,338	$	3,694		$	10,610
Gas	105,836		—			3,192
Non-regulated Energy:
Power Generation	1,031		19,094			5,031
Coal Mining	6,807		7,511			1,973
Oil and Gas	11,814		—			(1,964		)
Corporate activities (a)	—		—			11,679
Inter-company eliminations	—		(30,299		)	(3		)
Total	$	279,826	$	—		$	30,518

Six Months Ended June 30, 2014	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	336,835	$	7,151		$	26,002
Gas	361,836		—			26,692
Non-regulated Energy:
Power Generation	2,536		41,792			15,267
Coal Mining	12,201		17,948			4,480
Oil and Gas	29,998		—			(3,682		)
Corporate activities	—		—			(821		)
Inter-company eliminations	—		(66,891		)	—
Total	$	743,406	$	—		$	67,938

11

Six Months Ended June 30, 2013	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	312,821	$	7,841		$	22,966
Gas	305,648		—			21,675
Non-regulated Energy:
Power Generation	2,053		38,432			10,675
Coal Mining	12,817		15,084			3,038
Oil and Gas	27,158		—			(2,017		)
Corporate activities (a)	—		—			17,378
Inter-company eliminations	—		(61,357		)	—
Total	$	660,497	$	—		$	73,715

__________

(a) Corporate activities include a $12 million and a $17 million after-tax non-cash mark-to-market gain for the three and six months ended June 30, 2013, respectively on certain interest rate swaps.

Segment information and Corporate balances included in the accompanying Condensed Consolidated Balance Sheets were as follows (in thousands):

Total Assets (net of inter-company eliminations) as of:	June 30, 2014		December 31, 2013		June 30, 2013
Utilities:
Electric (a)	$	2,603,900	$	2,525,947	$	2,417,952
Gas	799,365		805,617		734,337
Non-regulated Energy:
Power Generation (a)	85,269		95,692		108,515
Coal Mining	73,701		78,825		82,553
Oil and Gas	307,837		288,366		256,855
Corporate activities	100,426		80,731		146,302
Total assets	$	3,970,498	$	3,875,178	$	3,746,514

__________

(a) The PPA under which Black Hills Colorado IPP provides generation to support Colorado Electric customers from the Pueblo Airport Generation Station is accounted for as a capital lease. As such, assets owned by our Power Generation segment are recorded at Colorado Electric under accounting for a capital lease.

12

(3)    ACCOUNTS RECEIVABLE

Following is a summary of Accounts receivable, net included in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2014	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	48,333	$	21,716	$	(622	)	$	69,427
Gas Utilities	43,104		9,265		(1,027		)	51,342
Power Generation	1,388		—		—			1,388
Coal Mining	1,866		—		—			1,866
Oil and Gas	9,123		—		(13		)	9,110
Corporate	2,012		—		—			2,012
Total	$	105,826	$	30,981	$	(1,662	)	$	135,145

	Accounts		Unbilled		Less Allowance for			Accounts
December 31, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	52,437	$	23,823	$	(666	)	$	75,594
Gas Utilities	49,162		41,195		(558		)	89,799
Power Generation	1,722		—		—			1,722
Coal Mining	1,711		—		—			1,711
Oil and Gas	8,156		—		(13		)	8,143
Corporate	604		—		—			604
Total	$	113,792	$	65,018	$	(1,237	)	$	177,573

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	45,250	$	24,290	$	(630	)	$	68,910
Gas Utilities	38,749		13,192		(1,074		)	50,867
Power Generation	157		—		—			157
Coal Mining	2,503		—		—			2,503
Oil and Gas	8,373		—		(19		)	8,354
Corporate	1,935		—		—			1,935
Total	$	96,967	$	37,482	$	(1,723	)	$	132,726

13

(4)    REGULATORY ACCOUNTING

We had the following regulatory assets and liabilities (in thousands):

	Maximum	As of		As of		As of
	Amortization (in years)	June 30, 2014		December 31, 2013		June 30, 2013
Regulatory assets
Deferred energy and fuel cost adjustments - current (a)(d)	1	$	29,605	$	16,775	$	15,951
Deferred gas cost adjustments and natural gas price derivatives (a)(d)	7	39,040		12,366		13,090
AFUDC (b)	45	12,468		12,315		12,456
Employee benefit plans (c)	13	65,874		67,059		115,379
Environmental (a)	subject to approval	1,314		1,800		1,798
Asset retirement obligations (a)	44	3,278		3,266		3,257
Bond issue cost (a)	24	3,347		3,419		3,489
Renewable energy standard adjustment (a)	5	14,501		14,186		14,694
Flow through accounting (c)	35	22,754		20,916		17,995
Other regulatory assets (a)	15	10,780		10,546		8,795
		$	202,961	$	162,648	$	206,904
Regulatory liabilities
Deferred energy and gas costs (a)	1	$	6,490	$	11,708	$	22,340
Employee benefit plans (c)	13	34,356		34,431		60,214
Cost of removal (a)	44	70,841		64,970		59,461
Other regulatory liabilities (c)	25	8,603		9,047		7,548
		$	120,290	$	120,156	$	149,563

__________

(a) Recovery of costs, but we are not allowed a rate of return.

(b) In addition to recovery of costs, we are allowed a rate of return.

(c) In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base, respectively.

(d) Our deferred energy, fuel cost, and gas cost adjustments represent the cost of electricity and gas delivered to our electric and gas utility customers that is either higher or lower than current rates and will be recovered or refunded in future rates. Increases in the current year balances as of June 30, 2014 are primarily due to higher natural gas prices driven by demand and market conditions during our peak winter heating season. Our electric and gas utilities file periodic quarterly, semi-annual, and/or annual filings to recover these costs based on the respective cost mechanisms approved by their applicable state utility commissions.

(5)    MATERIALS, SUPPLIES AND FUEL

The following amounts by major classification are included in Materials, supplies and fuel in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014		December 31, 2013		June 30, 2013
Materials and supplies	$	51,925	$	50,196	$	51,334
Fuel - Electric Utilities	7,679		6,213		6,817
Natural gas in storage held for distribution	21,560		32,069		15,617
Total materials, supplies and fuel	$	81,164	$	88,478	$	73,768

14

(6)    EARNINGS PER SHARE

A reconciliation of share amounts used to compute Earnings (loss) per share in the accompanying Condensed Consolidated Statements of Income (loss) is as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net income (loss) available for common stock	$	19,820	$	30,518	$	67,938	$	73,715
Weighted average shares - basic	44,399		44,172		44,365		44,113
Dilutive effect of:
Equity compensation	189		240		206		250
Weighted average shares - diluted	44,588		44,412		44,571		44,363

The following outstanding securities were not included in the computation of diluted earnings per share as their effect would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Equity compensation	81	28	63	34
Anti-dilutive shares	81	28	63	34

(7)    NOTES PAYABLE AND CURRENT MATURITIES OF LONG-TERM DEBT

We had the following short-term debt outstanding in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit
Revolving Credit Facility	$	132,700	$	20,272	$	82,500	$	22,100	$	100,000	$	43,157

Revolving Credit Facility

On May 29, 2014, we amended our $500 million corporate Revolving Credit Facility agreement to extend the term through May 29, 2019. This facility is substantially similar to the former agreement, which includes an accordion feature that allows us, with the consent of the administrative agent and issuing agents, to increase the capacity of the facility to $750 million. Borrowings continue to be available under a base rate or various Eurodollar rate options. The interest costs associated with the letters of credit or borrowings and the commitment fee under the Revolving Credit Facility are determined based upon our most favorable Corporate credit rating from S&P and Moody’s for our unsecured debt. Based on our credit ratings, the margins for base rate borrowings, Eurodollar borrowings and letters of credit were 0.125%, 1.125% and 1.125%, respectively, from May 29, 2014 through June 30, 2014; a reduction of 0.25% for each method of borrowing as compared to the previous arrangement. Borrowings under the facility are primarily Eurodollar based. A commitment fee is charged on the unused amount of the Revolving Credit Facility and was 0.175% based on our credit rating, a reduction of 0.025% compared to the prior arrangement.

Current Maturities Of Long-Term Debt

As of June 30, 2014, our Corporate term loan due June 19, 2015, for $275 million has been re-classified to Current maturities of long-term debt from Long-term debt, net of current maturities.

15

Debt Covenants

Our Revolving Credit Facility and our Term Loan require compliance with the following financial covenant at the end of each quarter:

	As of June 30, 2014	Covenant Requirement
Recourse Leverage Ratio	54%	Less than	65%

As of June 30, 2014, we were in compliance with this covenant.

(8)    RISK MANAGEMENT ACTIVITIES

Our activities in the regulated and non-regulated energy sectors expose us to a number of risks in the normal operation of our businesses. Depending on the activity, we are exposed to varying degrees of market risk and credit risk. To manage and mitigate these identified risks, we have adopted the Black Hills Corporation Risk Policies and Procedures as discussed in our 2013 Annual Report on Form 10-K.

Market Risk

Market risk is the potential loss that might occur as a result of an adverse change in market price or rate. We are exposed to the following market risks including, but not limited to:

• Commodity price risk associated with our natural long position in crude oil and natural gas reserves and production; and our fuel procurement for certain of our gas-fired generation assets; and

• Interest rate risk associated with our variable rate debt.

Credit Risk

Credit risk is the risk of financial loss resulting from non-performance of contractual obligations by a counterparty.

For production and generation activities, we attempt to mitigate our credit exposure by conducting business primarily with high credit quality entities, setting tenor and credit limits commensurate with counterparty financial strength, obtaining master netting agreements, and mitigating credit exposure with less creditworthy counterparties through parental guarantees, prepayments, letters of credit, and other security agreements.

We perform ongoing credit evaluations of our customers and adjust credit limits based upon payment history and the customer’s current creditworthiness, as determined by review of their current credit information. We maintain a provision for estimated credit losses based upon historical experience and any specific customer collection issue that is identified.

As ofJune 30, 2014, our credit exposure included a $0.5 million exposure to a non-investment grade energy marketing company. The remainder of our credit exposure was concentrated primarily among retail utility customers, investment grade rated companies, cooperative utilities and federal agencies. Our derivative and hedging activities recorded in the accompanying Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Income (Loss) and Condensed Consolidated Statements of Comprehensive Income (Loss) are detailed below and in Note 9.

16

Oil and Gas

We produce natural gas and crude oil through our exploration and production activities. Our natural long positions, or unhedged open positions, result in commodity price risk and variability to our cash flows.

To mitigate commodity price risk and preserve cash flows, we primarily use OTC swaps, exchange traded futures and related options to hedge portions of our crude oil and natural gas production. We elect hedge accounting on these instruments. These transactions were designated at inception as cash flow hedges, documented under accounting standards for derivatives and hedging, and initially met prospective effectiveness testing. Effectiveness of our hedging position is evaluated at least quarterly.

The derivatives were marked to fair value and were recorded as Derivative assets or Derivative liabilities on the accompanying Condensed Consolidated Balance Sheets. The effective portion of the gain or loss on these derivatives for which we have elected cash flow hedge accounting is reported in AOCI in the accompanying Condensed Consolidated Balance Sheets and the ineffective portion, if any, is reported in Revenue in the accompanying Condensed Consolidated Statements of Income (Loss).

The contract or notional amounts, terms of our commodity derivatives, and the derivative balances for our Oil and Gas segment reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps
Notional (a)	424,500		9,265,000		412,500		7,082,500		520,500		10,712,500
Maximum terms in months (b)	1		1		3		1		6		1
Derivative assets, current	$	—	$	—	$	55	$	—	$	610	$	293
Derivative assets, non-current	$	—	$	—	$	—	$	—	$	—	$	—
Derivative liabilities, current	$	—	$	—	$	—	$	—	$	130	$	276
Derivative liabilities, non-current	$	—	$	—	$	—	$	—	$	—	$	—

__________

(a) Crude oil in Bbls, natural gas in MMBtus.

(b) Refers to the term of the derivative instrument. Assets and liabilities are classified as current/non-current based on the term of the hedged transaction and the corresponding settlement of the derivative instrument.

A $3.4 million loss is included in AOCI at June 30, 2014, and would be realized over the next 12 months if market prices remained equal to June 30, 2014 prices. Future realized gains or losses fluctuate with market prices.

Utilities

The operations of our utilities, including natural gas sold by our Gas Utilities and natural gas used for Electric Utility generation plants or those plants under PPAs where our Electric Utilities must provide the generation fuel (tolling agreements), expose our utility customers to volatility in natural gas prices. Therefore, as allowed or required by state utility commissions, we have entered into commission-approved hedging programs utilizing natural gas futures, options and basis swaps to reduce our customers’ underlying exposure to these fluctuations. These transactions are considered derivatives, and in accordance with accounting standards for derivatives and hedging, mark-to-market adjustments are recorded as Derivative assets or Derivative liabilities on the accompanying Condensed Consolidated Balance Sheets, net of balance sheet offsetting as permitted by GAAP. Unrealized and realized gains and losses, as well as option premiums and commissions on these transactions are recorded as Regulatory assets or Regulatory liabilities in the accompanying Condensed Consolidated Balance Sheets in accordance with state commission guidelines. When the related costs are recovered through our rates, the hedging activity is recognized in the Condensed Consolidated Statements of Income (Loss).

17

The contract or notional amounts and terms of the natural gas derivative commodity instruments held at our Utilities were as follows, as of:

	June 30, 2014		December 31, 2013		June 30, 2013
	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)
Natural gas futures purchased	16,240,000	78	17,930,000	84	13,330,000	77
Natural gas options purchased	3,980,000	9	3,890,000	8	2,850,000	5
Natural gas basis swaps purchased	13,415,000	66	14,785,000	60	10,650,000	66

We had the following derivative balances related to the hedges in our Utilities reflected in our Condensed Consolidated Balance Sheets as of (in thousands):

	June 30, 2014		December 31, 2013		June 30, 2013
Derivative assets, current	$	1,737	$	662	$	—
Derivative assets, non-current	$	—	$	—	$	—
Derivative liabilities, non-current	$	—	$	—	$	—
Net unrealized (gain) loss included in Regulatory assets or Regulatory liabilities	$	3,561	$	7,567	$	8,450

Financing Activities

We entered into floating-to-fixed interest rate swap agreements to reduce our exposure to interest rate fluctuations associated with our floating rate debt obligations. The contract or notional amounts, terms of our interest rate swaps and the interest rate swaps balances reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014			December 31, 2013			June 30, 2013
	Interest Rate Swaps (a)			Interest Rate Swaps (a)			Interest Rate Swaps (b)			De-designated Interest Rate Swaps (c)
Notional	$	75,000		$	75,000		$	150,000		$	250,000
Weighted average fixed interest rate	4.97		%	4.97		%	5.04		%	5.67		%
Maximum terms in years	2.5			3.0			3.5			0.5
Derivative liabilities, current	$	3,480		$	3,474		$	6,965		$	61,899
Derivative liabilities, non-current	$	4,251		$	5,614		$	12,384		$	—

__________

(a) These swaps are designated to borrowings on our Revolving Credit Facility, and are priced using three-month LIBOR, matching the floating portion of the related debt.

(b) At June 30, 2013, $75 million of these interest rate swaps were designated to borrowings on our Revolving Credit Facility and $75 million were designated to borrowings on our project financing debt at Black Hills Wyoming. These swaps are priced using three-month LIBOR, matching the floating portion of the related debt. The portion of the swaps that were designated to Black Hills Wyoming were settled during the fourth quarter of 2013 upon repayment of the Black Hills Wyoming project financing.

(c) These swaps were settled during the fourth quarter of 2013.

Based on June 30, 2014, market interest rates and balances related to our interest rate swaps, a loss of approximately$3.5 millionwould be realized, reported in pre-tax earnings and reclassified from AOCI during the next 12 months.Estimated and actual realized gains or losses will change during future periods as market interest rates change.

18

Cash Flow Hedges

The impacts of cash flow hedges on our Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(337	)	Interest expense	$	(926	)		$	—
Commodity derivatives	(2,737		)	Revenue	(1,251		)		—
Total	$	(3,074	)		$	(2,177	)		$	—

Three Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,067	Interest expense	$	(1,820	)		$	—
Commodity derivatives	4,985		Revenue	(28		)		—
Total	$	6,052		$	(1,848	)		$	—

Six Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(429	)	Interest expense	$	(1,820	)		$	—
Commodity derivatives	(6,209		)	Revenue	(1,562		)		—
Total	$	(6,638	)		$	(3,382	)		$	—

Six Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,048	Interest expense	$	(3,616	)		$	—
Commodity derivatives	2,226		Revenue	1,064				—
Total	$	3,274		$	(2,552	)		$	—

19

(9)    FAIR VALUE MEASUREMENTS

Derivative Financial Instruments

The accounting guidance for fair value measurements requires certain disclosures about assets and liabilities measured at fair value. This guidance establishes a hierarchical framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement within the fair value hierarchy levels. We record transfers, if necessary, between levels at the end of the reporting period for all of our financial instruments. For additional information see Notes 1, 8 and 10 to the Consolidated Financial Statements included in our 2013 Annual Report on Form 10-K filed with the SEC.

Transfers into Level 3, if any, occur when significant inputs used to value the derivative instruments become less observable such as a significant decrease in the frequency and volume in which the instrument is traded, negatively impacting the availability of observable pricing inputs. Transfers out of Level 3, if any, occur when the significant inputs become more observable, such as when the time between the valuation date and the delivery date of a transaction becomes shorter, positively impacting the availability of observable pricing inputs.

Valuation Methodologies for Derivatives

Oil and Gas Segment:

• The commodity option contracts for our Oil and Gas segment are valued using the market approach and can include calls and puts. Fair value was derived using quoted prices from third-party brokers for similar instruments as to quantity and timing. The prices are then validated through third-party sources and therefore support Level 2 disclosure.

• The commodity basis swaps for our Oil and Gas segment are valued using the market approach with the instrument’s current forward price strip hedged for the same quantity and date and discounted based on the three-month LIBOR. We utilize observable inputs which support a Level 2 disclosure.

Utilities Segments:

• The commodity contracts for our Utilities Segments, valued using the market approach, include exchange-traded futures, options and basis swaps (Level 2) and OTC basis swaps (Level 3) for natural gas contracts. For Level 2 assets and liabilities, fair value was derived using broker quotes validated by the Chicago Mercantile Exchange pricing for similar instruments. For Level 3 assets and liabilities, fair value was derived using average price quotes from the OTC contract broker and an independent third-party market participant because these instruments are not traded on an exchange.

Corporate Activities:

• The interest rate swaps are valued using the market approach. We establish fair value by obtaining price quotes directly from the counterparty which are based on the floating three-month LIBOR curve for the term of the contract. The fair value obtained from the counterparty is then validated by utilizing a nationally recognized service that obtains observable inputs to compute fair value for the same instrument. In addition, the fair value for the interest rate swap derivatives includes a CVA component. The CVA considers the fair value of the interest rate swap and the probability of default based on the life of the contract. For the probability of a default component, we utilize observable inputs supporting a Level 2 disclosure by using our credit default spread, if available, or a generic credit default spread curve that takes into account our credit ratings.

20

Recurring Fair Value Measurements

There have been no significant transfers between Level 1 and Level 2 derivative balances. Amounts included in cash collateral and counterparty netting in the following tables represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions, netting of asset and liability positions permitted in accordance with accounting standards for offsetting as well as cash collateral posted with the same counterparties.

The following tables set forth by level within the fair value hierarchy our gross assets and gross liabilities and related offsetting as permitted by GAAP that were accounted for at fair value on a recurring basis for derivative instruments. A discussion of fair value of financial instruments is included in Note 10:

	As of June 30, 2014
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		—		—		—			—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		600		—		(600		)	—
Commodity derivatives — Utilities	—		4,342		—		(2,605		)	1,737
Total	$	—	$	4,942	$	—	$	(3,205	)	$	1,737
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		4,020		—		(4,020		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		2,030		—		(2,030		)	—
Commodity derivatives — Utilities	—		5,989		—		(5,989		)	—
Interest rate swaps	—		7,731		—		—			7,731
Total	$	—	$	19,770	$	—	$	(12,039	)	$	7,731

21

	As of December 31, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		130		—		(75		)	55
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		815		—		(815		)	—
Commodity derivatives —Utilities	—		3,030		—		(2,368		)	662
Total	$	—	$	3,975	$	—	$	(3,258	)	$	717
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		1,229		—		(1,229		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		531		—		(531		)	—
Commodity derivatives — Utilities	—		9,100		—		(9,100		)	—
Interest rate swaps	—		9,088		—		—			9,088
Total	$	—	$	19,948	$	—	$	(10,860	)	$	9,088

	As of June 30, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	45	$	—	$	(6	)	$	39
Basis Swaps -- Oil	—		1,109		—		(538		)	571
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		1,882		—		(1,589		)	293
Commodity derivatives — Utilities	—		1,378		—		(1,378		)	—
Total	$	—	$	4,414	$	—	$	(3,511	)	$	903
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	181	$	—	$	(98	)	$	83
Basis Swaps -- Oil	—		350		—		(303		)	47
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		445		—		(169		)	276
Commodity derivatives — Utilities	—		8,581		—		(8,581		)	—
Interest rate swaps	—		87,208		—		(5,960		)	81,248
Total	$	—	$	96,765	$	—	$	(15,111	)	$	81,654

22

Fair Value Measures by Balance Sheet Classification

As required by accounting standards for derivatives and hedges, fair values within the following tables are presented on a gross basis reflecting the netting of asset and liability positions permitted in accordance with accounting standards for offsetting and under terms of our master netting agreements and the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions; however, the amounts do not include net cash collateral on deposit in margin accounts at June 30, 2014, December 31, 2013, and June 30, 2013, to collateralize certain financial instruments, which are included in Derivative assets and/or Derivative liabilities. Therefore, the balances are not indicative of either our actual credit exposure or net economic exposure. Additionally, the amounts below will not agree with the amounts presented on our Condensed Consolidated Balance Sheets, nor will they correspond to the fair value measurements presented in Note 8.

The following tables present the fair value and balance sheet classification of our derivative instruments (in thousands):

As of June 30, 2014
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	262	$	—
Commodity derivatives	Derivative assets — non-current	338		—
Commodity derivatives	Derivative liabilities — current	—		3,702
Commodity derivatives	Derivative liabilities — non-current	—		2,348
Interest rate swaps	Derivative liabilities — current	—		3,480
Interest rate swaps	Derivative liabilities — non-current	—		4,251
Total derivatives designated as hedges		$	600	$	13,781
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,737	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		3,384
Total derivatives not designated as hedges		$	1,737	$	3,384

As of December 31, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	248	$	—
Commodity derivatives	Derivative assets — non-current	698		—
Commodity derivatives	Derivative liabilities — current	—		1,541
Commodity derivatives	Derivative liabilities — non-current	—		219
Interest rate swaps	Derivative liabilities — current	—		3,474
Interest rate swaps	Derivative liabilities — non-current	—		5,614
Total derivatives designated as hedges		$	946	$	10,848
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	662	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		6,732
Total derivatives not designated as hedges		$	662	$	6,732

23

As of June 30, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,225	$	—
Commodity derivatives	Derivative assets — non-current	1,651		—
Commodity derivatives	Derivative liabilities — current	—		889
Commodity derivatives	Derivative liabilities — non-current	—		41
Interest rate swaps	Derivative liabilities — current	—		6,965
Interest rate swaps	Derivative liabilities — non-current	—		12,384
Total derivatives designated as hedges		$	2,876	$	20,279
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	160	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		1,884
Commodity derivatives	Derivative liabilities — non-current	—		5,365
Interest rate swaps	Derivative liabilities — current	—		67,859
Interest rate swaps	Derivative liabilities — non-current	—		—
Total derivatives not designated as hedges		$	160	$	75,108

24

(10)    FAIR VALUE OF FINANCIAL INSTRUMENTS

The estimated fair values of our financial instruments, excluding derivatives which are presented in Note 9, were as follows (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents (a)	$	14,697	$	14,697	$	7,841	$	7,841	$	30,633	$	30,633
Restricted cash and equivalents (a)	$	2	$	2	$	2	$	2	$	7,279	$	7,279
Notes payable (a)	$	132,700	$	132,700	$	82,500	$	82,500	$	100,000	$	100,000
Long-term debt, including current maturities (b)	$	1,396,950	$	1,578,756	$	1,396,948	$	1,491,422	$	1,214,066	$	1,323,543

__________

(a) Carrying value approximates fair value due to either the short-term length of maturity or variable interest rates that approximate prevailing market rates, and therefore is classified in Level 1 in the fair value hierarchy.

(b) Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy.

(11) OTHER COMPREHENSIVE INCOME (LOSS)

The components of the reclassification adjustments, net of tax, included in Other Comprehensive Income (Loss) for the periods were as follows (in thousands):

	Location on the Condensed Consolidated Statements of Income (Loss)	Amount Reclassified from AOCI
		Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
Gains (losses) on cash flow hedges:
Interest rate swaps	Interest expense	$	926		$	1,820		$	1,820		$	3,616
Commodity contracts	Revenue	1,251			28			1,562			(1,064		)
		2,177			1,848			3,382			2,552
Income tax	Income tax benefit (expense)	(774		)	(647		)	(1,199		)	(883		)
Reclassification adjustments related to cash flow hedges, net of tax		$	1,403		$	1,201		$	2,183		$	1,669
Amortization of defined benefit plans:
Prior service cost	Utilities - Operations and maintenance	$	(25	)	$	(31	)	$	(51	)	$	(62	)
	Non-regulated energy operations and maintenance	(84		)	(32		)	(71		)	(64		)
Actuarial gain (loss)	Utilities - Operations and maintenance	158			421			315			842
	Non-regulated energy operations and maintenance	101			274			186			548
		150			632			379			1,264
Income tax	Income tax benefit (expense)	(52		)	(268		)	(133		)	(443		)
Reclassification adjustments related to defined benefit plans, net of tax		$	98		$	364		$	246		$	821

25

Balances by classification included within Accumulated other comprehensive income (loss) on the accompanying Condensed Consolidated Balance Sheets are as follows (in thousands):

	Derivatives Designated as Cash Flow Hedges			Employee Benefit Plans			Total
Balance as of December 31, 2012	$	(15,713	)	$	(19,775	)	$	(35,488	)
Other comprehensive income (loss), net of tax	(1,193		)	457			(736		)
Balance as of March 31, 2013	(16,906		)	(19,318		)	(36,224		)
Other comprehensive income (loss), net of tax	5,079			364			5,443
Balance as of June 30, 2013	$	(11,827	)	$	(18,954	)	$	(30,781	)
Balance as of December 31, 2013	$	(7,133	)	$	(10,289	)	$	(17,422	)
Other comprehensive income (loss), net of tax	(1,478		)	311			(1,167		)
Balance as of March 31, 2014	(8,611		)	(9,978		)	(18,589		)
Other comprehensive income (loss), net of tax	(556		)	(296		)	(852		)
Balance as of June 30, 2014	$	(9,167	)	$	(10,274	)	$	(19,441	)

(12)    SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION

Six months ended	June 30, 2014			June 30, 2013
	(in thousands)
Non-cash investing and financing activities from continuing operations—
Property, plant and equipment acquired with accrued liabilities	$	40,611		$	45,000
Increase (decrease) in capitalized assets associated with asset retirement obligations	$	(2,785	)	$	—
Cash (paid) refunded during the period for continuing operations—
Interest (net of amounts capitalized)	$	(35,009	)	$	(44,191	)
Income taxes, net	$	(396	)	$	(5,406	)

(13)    EMPLOYEE BENEFIT PLANS

Defined Benefit Pension Plans

The components of net periodic benefit cost for the Defined Benefit Pension Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	1,362		$	1,608		$	2,724		$	3,216
Interest cost	3,963			3,825			7,926			7,650
Expected return on plan assets	(4,516		)	(4,654		)	(9,032		)	(9,308		)
Prior service cost	16			16			32			32
Net loss (gain)	1,201			3,062			2,403			6,124
Net periodic benefit cost	$	2,026		$	3,857		$	4,053		$	7,714

26

Non-pension Defined Benefit Postretirement Healthcare Plans

The components of net periodic benefit cost for the Non-pension Defined Benefit Postretirement Healthcare Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	425		$	419		$	850		$	838
Interest cost	480			417			959			834
Expected return on plan assets	(21		)	(20		)	(42		)	(40		)
Prior service cost (benefit)	(107		)	(125		)	(214		)	(250		)
Net loss (gain)	40			121			80			242
Net periodic benefit cost	$	817		$	812		$	1,633		$	1,624

Supplemental Non-qualified Defined Benefit and Defined Contribution Plans

The components of net periodic benefit cost for the Supplemental Non-qualified Defined Benefit and Defined Contribution Plans were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Service cost	$	374	$	348	$	749	$	696
Interest cost	362		332		724		664
Prior service cost	1		1		1		2
Net loss (gain)	124		198		249		396
Net periodic benefit cost	$	861	$	879	$	1,723	$	1,758

Contributions

We anticipate that we will make contributions to the benefit plans during 2014 and 2015. Contributions to the Defined Benefit Pension Plans are cash contributions made directly to the Pension Plan Trust accounts. Contributions to the Healthcare and Supplemental Plan are made in the form of benefit payments. Contributions and anticipated contributions are as follows (in thousands):

	Contributions Made		Contributions Made		Additional
	Three Months Ended June 30, 2014		Six Months Ended June 30, 2014		Contributions Anticipated for 2014		Contributions Anticipated for 2015
Defined Benefit Pension Plans	$	—	$	—	$	—	$	2,806
Non-pension Defined Benefit Postretirement Healthcare Plans	$	956	$	1,912	$	1,912	$	3,822
Supplemental Non-qualified Defined Benefit and Defined Contribution Plans	$	373	$	746	$	746	$	1,494

27

(14)    COMMITMENTS AND CONTINGENCIES

There have been no significant changes to commitments and contingencies from those previously disclosed in Note 18 of our Notes to the Consolidated Financial Statements in our 2013 Annual Report on Form 10-K except for those described below.

Bond Purchase Agreements

On June 30, 2014, Black Hills Power and Cheyenne Light entered into agreements to issue $160 million of first mortgage bonds to finance Cheyenne Prairie. Black Hills Power will issue $85 million of 4.43% coupon first mortgage bonds due October 20, 2044, and Cheyenne Light will issue $75 million of 4.53% coupon first mortgage bonds due October 20, 2044. The closing for the sale of the first mortgage bonds for both utilities is anticipated to be October 1, 2014, subject to satisfaction of customary closing conditions.

Natural Gas Delivery Agreement

In 2012, we entered into a ten-year gas gathering and processing contract for natural gas production from our properties in the Piceance Basin in Colorado, under which we pay a gathering fee per Mcf. The contract requires us to deliver a minimum of 20,000 Mcf per day. This agreement became effective in first quarter of 2014 upon completion of the processing infrastructure capable of handling the committed volumes. We believe that our reserves dedicated to the gathering system, and the projected volumes are adequate to materially satisfy our delivery commitments under this agreement.

Turbine Sale Agreement

On May 6, 2013, Black Hills Wyoming entered into an agreement to sell its 40 MW CTII natural-gas fired generating unit to the City of Gillette, Wyoming for approximately $22 million, upon expiration of the PPA with Cheyenne Light in August 2014. As part of the sale, Black Hills Wyoming will provide services to the City of Gillette through an economy energy PPA. The sale received FERC approval on July 14, 2014, and is expected to close by August 31, 2014.

Reimbursement Agreement

We have a reimbursement agreement in place with Wells Fargo on behalf of Cheyenne Light for the 2009A bonds of $10 million due in 2027 and the 2009B bonds of $7.0 million due in 2021. In the case of default, we hold the assumption of liability for drawings on Cheyenne Light’s Letter of Credit attached to these bonds.

Other Commitments

Construction of Cheyenne Prairie, a 132 MW natural gas-fired electric generating facility jointly owned by Cheyenne Light and Black Hills Power is expected to cost approximately$222 million. Construction is expected to be completed by September 30, 2014. As of June 30, 2014, committed contracts for equipment purchases and for construction were 100% and 98% complete, respectively.

Oil Creek Fire

On June 29, 2012, a forest and grassland fire occurred in the western Black Hills of Wyoming. A state fire investigator concluded that the fire was caused by the failure of a transmission structure owned, operated and maintained by Black Hills Power. On April 16, 2013, a lawsuit was filed in the United States District Court for the District of Wyoming, which forty-seven plaintiffs and the State of Wyoming have now joined, asserting claims for damages against Black Hills Power. The claims include allegations of negligence, negligence per se, common law nuisance, and trespass. In addition to claims for these compensatory damages, the lawsuit seeks recovery of punitive damages. Our investigation of the cause and origin of the fire is ongoing. We have denied and will vigorously defend all claims arising out of the fire, pending the completion of our investigation. We cannot predict the outcome of our investigation, the viability of alleged claims or the outcome of the litigation.

28

Civil litigation of this kind, however, is likely to lead to settlement negotiations, including negotiations prompted by pre-trial civil court procedures. We believe such negotiations would effect a settlement of all claims. Regardless of whether the litigation is determined at trial or through settlement, we expect to incur significant investigation, legal and expert services expenses associated with the litigation. We maintain insurance coverage to limit our exposure to losses due to civil liability claims, and related litigation expense. The deductible applicable to some types of claims arising out of this fire is $1.0 million. We expect this coverage to limit our exposure, and we will pursue recoveries to the maximum extent available under the policies. Based upon information currently available, we believe that a loss associated with settlement of pending claims is probable. Accordingly, as of June 30, 2014, we recorded a loss contingency liability related to these claims, and we recorded a receivable for costs we believe are reimbursable and probable of recovery under our insurance coverage. Both of these entries reflect our reasonable estimate of probable future litigation expense and settlement costs; we did not base these contingencies on any determination that it is probable we would be found liable for these claims were they to be litigated.

Given the uncertainty of litigation, however, a loss related to the fire, the litigation and related claims in excess of the loss we have determined to be probable is reasonably possible. However, we cannot reasonably estimate the amount of such possible loss because our investigation and review of damage claims documentation is ongoing, and there are significant factual and legal issues to be resolved. Further claims may be presented by these and other parties. While we have received claims seeking recovery for fire suppression, reclamation and rehabilitation costs, damage to fencing and other personal property, alleged injury to timber, grass or hay, livestock and related operations, and diminished value of real estate, currently totaling $50 million, we are not yet able, for the reasons described above, to reasonably estimate the amount of any reasonable possible losses in excess of the amount we have accrued. Based upon information currently available, however, management does not expect the outcome of the claims to have a material adverse effect upon our consolidated financial condition, results of operations or cash flows.

Dividend Restrictions

Our Revolving Credit Facility and other debt obligations contain restrictions on the payment of cash dividends upon a default or event of default. As of June 30, 2014, we were in compliance with these covenants.

Due to our holding company structure, substantially all of our operating cash flows are provided by dividends paid or distributions made by our subsidiaries. The cash to pay dividends to our stockholders is derived from these cash flows. As a result, certain statutory limitations or regulatory or financing agreements could affect the levels of distributions allowed to be made by our subsidiaries. The following restrictions on distributions from our subsidiaries existed at June 30, 2014:

• Our utilities are generally limited to the amount of dividends allowed to be paid to us as a utility holding company under the Federal Power Act and settlement agreements with state regulatory jurisdictions. As of June 30, 2014, the restricted net assets at our Utilities Group were approximately $141 million.

(15)    GUARANTEES

We have entered into various agreements providing financial or performance assurance to third parties on behalf of certain of our subsidiaries. The agreements include indemnification for reclamation and surety bonds.

We had the following guarantees in place (in thousands):

	Maximum Exposure at
Nature of Guarantee	June 30, 2014		Expiration
Indemnification for subsidiary reclamation/surety bonds (1)	$	65,744	Ongoing

_______________________

(1) We have guarantees in place for reclamation and surety bonds for our subsidiaries. The guarantees were entered into in the normal course of business. To the extent liabilities are incurred as a result of activities covered by the surety bonds, such liabilities are included in our Condensed Consolidated Balance Sheets.

During the second quarter, guarantees of Black Hills Utility Holdings’ payment obligations up to $70 million arising from commodity transactions for natural gas supply were removed, primarily due to improvement of the corporate credit rating, as well as the conversion of certain guarantees to letters of credit.

29

ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

We are a growth-oriented, vertically-integrated energy company operating principally in the United States with two major business groups — Utilities and Non-regulated Energy. We report our business groups in the following financial segments:

Business Group	Financial Segment
Utilities	Electric Utilities
	Gas Utilities
Non-regulated Energy	Power Generation
	Coal Mining
	Oil and Gas

Our Utilities Group consists of our Electric and Gas Utilities segments. Our Electric Utilities segment generates, transmits and distributes electricity to approximately 203,500 customers in South Dakota, Wyoming, Colorado and Montana; and also distributes natural gas to approximately 35,500 Cheyenne Light customers in Wyoming. Our Gas Utilities serve approximately 538,000 natural gas customers in Colorado, Iowa, Kansas and Nebraska. Our Non-regulated Energy Group consists of our Power Generation, Coal Mining and Oil and Gas segments. Our Power Generation segment produces electric power from our generating plants and sells the electric capacity and energy principally to our utilities under long-term contracts. Our Coal Mining segment produces coal at our coal mine near Gillette, Wyoming and sells the coal primarily to on-site, mine-mouth power generation facilities. Our Oil and Gas segment engages in exploration, development and production of crude oil and natural gas, primarily in the Rocky Mountain region.

Certain industries in which we operate are highly seasonal, and revenue from, and certain expenses for, such operations may fluctuate significantly among quarterly periods. Demand for electricity and natural gas is sensitive to seasonal cooling, heating and industrial load requirements, as well as changes in market prices. In particular, the normal peak usage season for electric utilities is June through August while the normal peak usage season for gas utilities is November through March. Significant earnings variances can be expected between the Gas Utilities segment’s peak and off-peak seasons. Due to this seasonal nature, our results of operations for the three and six months ended June 30, 2014 and 2013, and our financial condition as of June 30, 2014, December 31, 2013 and June 30, 2013, are not necessarily indicative of the results of operations and financial condition to be expected as of or for any other period or for the entire year.

See Forward-Looking Information in the Liquidity and Capital Resources section of this Item 2, beginning on Page 59.

The following business group and segment information does not include inter-company eliminations. Minor differences in amounts may result due to rounding. All amounts are presented on a pre-tax basis unless otherwise indicated.

30

Results of Operations

Executive Summary, Significant Events and Overview

Three Months Ended June 30, 2014 Compared to Three Months Ended June 30, 2013. Net income (loss) for the three months ended June 30, 2014 was $20 million, or $0.44 per share, compared to Net income (loss) of $31 million, or $0.69 per share, reported for the same period in 2013.

Six Months Ended June 30, 2014 Compared to Six Months Ended June 30, 2013. Net income (loss) for the six months ended June 30, 2014 was $68 million, or $1.52 per share, compared to Net income (loss) of $74 million, or $1.66 per share, reported for the same period in 2013.

The following table summarizes select financial results by operating segment and details significant items (in thousands):

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
Revenue
Utilities	$	264,383		$	263,868		$	515		$	705,822		$	626,310		$	79,512
Non-regulated Energy	51,779			46,257			5,522			104,475			95,544			8,931
Inter-company eliminations	(32,925		)	(30,299		)	(2,626		)	(66,891		)	(61,357		)	(5,534		)
	$	283,237		$	279,826		$	3,411		$	743,406		$	660,497		$	82,909
Net income (loss)
Electric Utilities	$	11,427		$	10,610		$	817		$	26,002		$	22,966		$	3,036
Gas Utilities	1,994			3,192			(1,198		)	26,692			21,675			5,017
Utilities	13,421			13,802			(381		)	52,694			44,641			8,053
Power Generation	7,194			5,031			2,163			15,267			10,675			4,592
Coal Mining	2,016			1,973			43			4,480			3,038			1,442
Oil and Gas	(1,660		)	(1,964		)	304			(3,682		)	(2,017		)	(1,665		)
Non-regulated Energy	7,550			5,040			2,510			16,065			11,696			4,369
Corporate activities and eliminations (a)	(1,151		)	11,676			(12,827		)	(821		)	17,378			(18,199		)
Net income (loss)	$	19,820		$	30,518		$	(10,698	)	$	67,938		$	73,715		$	(5,777	)

__________

(a) Corporate activities for the three and six months ended June 30, 2013 include a $12 million and a $17 million net after-tax non-cash mark-to-market gain on certain interest rate swaps. These same interest rate swaps were settled in November 2013.

31

Overview of Business Segments and Corporate Activity

Utilities Group

• Gas Utilities experienced milder weather during the three months ended June 30, 2014 resulting in a 16% decrease in heating degree days compared to the same period in 2013. Year-to-date results were favorably impacted by colder weather during the first quarter of 2014. Heating degree days were 2% higher for the six months ended June 30, 2014, compared to the same period in 2013. Heating degree days for the three and six months ended June 30, 2014 were 5% and 12% higher than normal, respectively, compared to 24% and 9% higher than normal for the same periods in 2013.

• Construction continued on Cheyenne Prairie, a natural gas-fired electric generating facility to serve Cheyenne Light and Black Hills Power customers. The 132 MW generation project is expected to cost approximately $222 million, exclusive of construction financing costs which are being recovered through construction financing riders. The Electric Utilities recorded additional gross margins of approximately $3.7 million and $7.8 million, respectively, for the three and six months ended June 30, 2014, related to these riders. To date, we have expended approximately $196 million. The project is expected to be completed at or less than budget and is on schedule to be placed into service in October 2014.

• On July 31, 2014, the WPSC approved rate case settlement agreements authorizing an increase for Cheyenne Light of $8.4 million and $0.8 million for annual electric and natural gas revenue, respectively, effective October 1, 2014. The settlement also included a return on equity of 9.9%, and a capital structure of 54% equity and 46% debt.

• On July 22, 2014, Black Hills Power filed a CPCN with the WPSC to construct the Wyoming portion of a $54 million, 230-kV, 144 mile-long transmission line that would connect the Teckla Substation in northeast Wyoming, to the Lange Substation near Rapid City, South Dakota. On June 30, 2014, Black Hills Power filed an application with the SDPUC, for a permit to construct the South Dakota portion of this line. Approval by the WPSC and SDPUC is anticipated in the fourth quarter of 2014.

• On June 30, 2014, Black Hills Power and Cheyenne Light entered into agreements to issue $160 million of first mortgage bonds to finance Cheyenne Prairie. Black Hills Power will issue $85 million of 4.43% coupon first mortgage bonds due October 20, 2044, and Cheyenne Light will issue $75 million of 4.53% coupon first mortgage bonds due October 20, 2044. The closing for the sale of the first mortgage bonds for both utilities is anticipated to be October 1, 2014, subject to satisfaction of customary closing conditions.

• On May 5, 2014, Colorado Electric issued an all-source generation request for approximately 42 MW of summer seasonal firm capacity in 2017, 2018, and 2019, and up to 60 MW of eligible renewable energy resources to serve its customers in southern Colorado. Colorado IPP submitted solar and wind bids in response to this request. Proposed bids were due by July 31, 2014, and pending Colorado Electric’s review of the bids and other regulatory proceedings, a CPUC decision on Colorado Electric’s portfolio of generation resources is expected by the end of February 2015.

• On April 30, 2014, Colorado Electric filed a rate request with the CPUC for an annual revenue increase of $8.0 million to recover operating expenses and infrastructure investments, including those for the Busch Ranch Wind Farm. Colorado Electric seeks approval of a new rider pursuant to the Clean Air-Clean Jobs Act Adjustment, to recover a return on the expenditures associated with the construction of a $65 million natural gas-fired combustion turbine unit, previously approved by the CPUC to replace the W.N. Clark retirement. The filing seeks a return on equity of 10.3% and a capital structure of approximately 50.5% equity and 49.5% debt.A subsequent filing on June 27, 2014 reduced our request to $7.2 million to reflect updated cost information.

• On April 29, 2014, Kansas Gas filed a rate request with the KCC to increase annual revenue by $7.3 million primarily to recover infrastructure and increased operating costs. The filing seeks a return on equity of 10.6%, and a capital structure of approximately 50.3% equity and 49.7% debt.

• On April 25, 2014 Cheyenne Light received FERC approval to establish rates for transmission services under their Open Access Transmission Tariff, effective May 3, 2014. The approval includes a return on equity of 10.6% and a capital structure of 54% equity and 46% debt.

• On March 31, 2014, Black Hills Power filed a rate request with the SDPUC to increase annual revenue by $14.6 million to recover operating expenses and infrastructure investments, primarily for Cheyenne Prairie. The filing seeks a return on equity of 10.25%, and a capital structure of approximately 53.3% equity and 46.7% debt.

32

• On March 21, 2014, Black Hills Power retired the Ben French, Neil Simpson I, and Osage coal-fired power plants. These three plants totaling 81 MW were closed because of federal environmental regulations. These plants will largely be replaced by Black Hills Power’s share of Cheyenne Prairie.

• On February 25, 2014, the CPUC issued a final order after rehearing, approving a CPCN for the retirement of Pueblo Unit #5 and #6, effective December 31, 2013.

• On January 17, 2014, Black Hills Power filed a rate request with the WPSC for an annual revenue increase of $2.8 million to recover investments made in electric infrastructure, primarily for Cheyenne Prairie. The filing seeks a return on equity of 10.25% and a capital structure of approximately 53.3% equity and 46.7% debt.

• Our Utilities Group continued its efforts to acquire small municipal gas distribution systems adjacent to our existing service territories. During the first quarter of 2014, we acquired an additional gas system, adding approximately 70 customers, and we announced the pending acquisition of assets serving approximately 400 customers.

Non-regulated Energy Group

• Oil and Gas production volumes increased 15% and 5%, respectively, for the three and six months ended June 30, 2014. The average hedged price received increased for natural gas by 35% and 24% and decreased for oil by 18% and 8%, respectively for the three and six months ended June 30, 2014 compared to the same periods in 2013.

• On July 14, 2014, Black Hills Wyoming received FERC approval for the sale of its 40 MW CTII natural gas-fired unit to the City of Gillette, Wyoming for approximately $22 million. The sale is expected to close on August 31, 2014 upon expiration of the PPA with Cheyenne Light.

• Drilling commenced in June 2014 in the southern Piceance Basin on two of the six horizontal Mancos Shale wells planned for 2014.

• Production continued from the two horizontal Mancos Shale wells placed on production during the first quarter of 2014. On March 6, 2014, the Summit Midstream cryogenic gas processing plant with a capacity of 20,000 Mcf per day started serving the company’s gas production in the southern Piceance Basin, including the two Mancos Shale wells placed on production during the first quarter.

Corporate Activities

• On June 13, 2014, Fitch upgraded the BHC credit rating to BBB+ with a stable outlook.

• On May 29, 2014, we amended our $500 million corporate Revolving Credit Facility agreement to extend the term through May 29, 2019. This facility is substantially similar to the former agreement, which includes an accordion feature that allows us, with the consent of the administrative agent and issuing agents, to increase the capacity of the facility to $750 million. Borrowings continue to be available under a base rate or various Eurodollar rate options for which the borrowing rates were reduced under the amended agreement.

• On January 30, 2014, Moody’s upgraded our corporate credit rating to Baa1 from Baa2 with continued stable outlook.

• Consolidated interest expense decreased by approximately $5.5 million and $11 million for the three and six months ended June 30, 2014, respectively, compared to the three and six months ended June 30, 2013, due primarily to the refinancing activities occurring during the fourth quarter of 2013.

Operating Results

A discussion of operating results from our segments and Corporate activities follows.

33

Utilities Group

We report two segments within the Utilities Group: Electric Utilities and Gas Utilities. The Electric Utilities segment includes the electric operations of Black Hills Power, Colorado Electric and the electric and natural gas operations of Cheyenne Light. The Gas Utilities segment includes the regulated natural gas utility operations of Black Hills Energy in Colorado, Iowa, Kansas and Nebraska.

Non-GAAP Financial Measure

The following discussion includes financial information prepared in accordance with GAAP, as well as another financial measure, gross margin, that is considered a “non-GAAP financial measure.” Generally, a non-GAAP financial measure is a numerical measure of a company’s financial performance, financial position or cash flows that excludes (or includes) amounts that are included in (or excluded from) the most directly comparable measure calculated and presented in accordance with GAAP. Gross margin (revenue less cost of sales) is a non-GAAP financial measure due to the exclusion of depreciation from the measure. The presentation of gross margin is intended to supplement investors’ understanding of our operating performance.

Gross margin for our Electric Utilities is calculated as operating revenue less cost of fuel, purchased power and cost of natural gas sold. Gross margin for our Gas Utilities is calculated as operating revenues less cost of natural gas sold. Our gross margin is impacted by the fluctuations in power purchases and natural gas and other fuel supply costs. However, while these fluctuating costs impact gross margin as a percentage of revenue, they only impact total gross margin if the costs cannot be passed through to our customers.

Our gross margin measure may not be comparable to other companies’ gross margin measure. Furthermore, this measure is not intended to replace operating income as determined in accordance with GAAP as an indicator of operating performance.

Electric Utilities

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
	(in thousands)
Revenue — electric	$	154,544		$	151,775		$	2,769		$	322,909		$	302,148		$	20,761
Revenue — gas	7,340			6,257			1,083			21,077			18,514			2,563
Total revenue	161,884			158,032			3,852			343,986			320,662			23,324
Fuel, purchased power and cost of gas — electric	69,723			67,349			2,374			148,142			133,038			15,104
Purchased gas — gas	4,051			2,515			1,536			12,325			8,953			3,372
Total fuel, purchased power and cost of gas	73,774			69,864			3,910			160,467			141,991			18,476
Gross margin — electric	84,821			84,426			395			174,767			169,110			5,657
Gross margin — gas	3,289			3,742			(453		)	8,752			9,561			(809		)
Total gross margin	88,110			88,168			(58		)	183,519			178,671			4,848
Operations and maintenance	40,272			39,383			889			82,872			78,218			4,654
Depreciation and amortization	19,274			19,665			(391		)	38,361			38,826			(465		)
Total operating expenses	59,546			59,048			498			121,233			117,044			4,189
Operating income	28,564			29,120			(556		)	62,286			61,627			659
Interest expense, net	(11,829		)	(13,810		)	1,981			(23,841		)	(28,207		)	4,366
Other income (expense), net	352			173			179			608			458			150
Income tax benefit (expense)	(5,660		)	(4,873		)	(787		)	(13,051		)	(10,912		)	(2,139		)
Net income (loss)	$	11,427		$	10,610		$	817		$	26,002		$	22,966		$	3,036

34

	Three Months Ended June 30,				Six Months Ended June 30,
Revenue - Electric (in thousands)	2014		2013		2014		2013
Residential:
Black Hills Power	$	14,332	$	13,535	$	34,392	$	29,977
Cheyenne Light	8,167		8,307		17,840		17,637
Colorado Electric	21,316		21,829		45,995		45,950
Total Residential	43,815		43,671		98,227		93,564
Commercial:
Black Hills Power	21,200		18,913		42,728		36,397
Cheyenne Light	15,238		14,476		29,631		27,243
Colorado Electric	23,101		21,663		44,991		42,814
Total Commercial	59,539		55,052		117,350		106,454
Industrial:
Black Hills Power	7,534		7,210		14,869		13,220
Cheyenne Light	7,304		5,344		14,528		10,199
Colorado Electric	9,535		9,647		18,573		19,284
Total Industrial	24,373		22,201		47,970		42,703
Municipal:
Black Hills Power	846		847		1,638		1,561
Cheyenne Light	514		490		968		948
Colorado Electric	3,277		3,492		6,584		6,039
Total Municipal	4,637		4,829		9,190		8,548
Total Retail Revenue - Electric	132,364		125,753		272,737		251,269
Contract Wholesale:
Total Contract Wholesale - Black Hills Power	4,473		4,926		10,071		10,693
Off-system Wholesale:
Black Hills Power	5,411		7,849		14,486		14,099
Cheyenne Light	1,787		2,094		4,174		4,776
Colorado Electric	1,912		2,133		3,995		3,240
Total Off-system Wholesale	9,110		12,076		22,655		22,115
Other Revenue:
Black Hills Power	6,945		7,552		13,823		14,702
Cheyenne Light	534		482		1,287		1,048
Colorado Electric	1,118		986		2,336		2,321
Total Other Revenue	8,597		9,020		17,446		18,071
Total Revenue - Electric	$	154,544	$	151,775	$	322,909	$	302,148

35

	Three Months Ended June 30,		Six Months Ended June 30,
Quantities Generated and Purchased (in MWh)	2014	2013	2014	2013
Generated —
Coal-fired:
Black Hills Power (a)	336,842	450,097	754,090	877,112
Cheyenne Light	162,847	155,384	332,636	327,696
Colorado Electric	—	—	—	—
Total Coal-fired	499,689	605,481	1,086,726	1,204,808
Natural Gas and Oil:
Black Hills Power	2,665	4,558	4,972	7,678
Cheyenne Light	—	—	—	—
Colorado Electric (b)	40,599	107,535	58,668	138,589
Total Natural Gas and Oil	43,264	112,093	63,640	146,267
Wind:
Colorado Electric	13,230	11,834	27,558	23,007
Total Wind	13,230	11,834	27,558	23,007
Total Generated:
Black Hills Power	339,507	454,655	759,062	884,790
Cheyenne Light	162,847	155,384	332,636	327,696
Colorado Electric	53,829	119,369	86,226	161,596
Total Generated	556,183	729,408	1,177,924	1,374,082
Purchased —
Black Hills Power	365,463	349,183	796,265	737,382
Cheyenne Light	197,225	205,027	404,543	406,872
Colorado Electric (b)	467,197	412,037	937,299	867,175
Total Purchased	1,029,885	966,247	2,138,107	2,011,429
Total Generated and Purchased:
Black Hills Power	704,970	803,838	1,555,327	1,622,172
Cheyenne Light	360,072	360,411	737,179	734,568
Colorado Electric	521,026	531,406	1,023,525	1,028,771
Total Generated and Purchased	1,586,068	1,695,655	3,316,031	3,385,511

__________

(a) Decrease reflects the retirement of Neil Simpson I on March 21, 2014.

(b) Decrease reflects a current year unplanned outage due to a turbine bearing replacement and combustor upgrade at Pueblo Airport Generation Station, and utilization of Pueblo Airport Generating Station Units #1 and #2 in place of purchased power from Colorado IPP during the six months ended June 30 2013.

36

	Three Months Ended June 30,		Six Months Ended June 30,
Quantity (in MWh)	2014	2013	2014	2013
Residential:
Black Hills Power	107,394	113,525	278,704	274,495
Cheyenne Light	57,328	60,669	127,983	136,125
Colorado Electric	132,256	140,755	285,887	296,191
Total Residential	296,978	314,949	692,574	706,811
Commercial:
Black Hills Power	176,541	174,763	360,989	350,380
Cheyenne Light	129,688	132,214	256,100	261,643
Colorado Electric	174,239	180,340	332,418	351,045
Total Commercial	480,468	487,317	949,507	963,068
Industrial:
Black Hills Power	104,914	105,856	205,765	197,488
Cheyenne Light	94,861	65,716	185,586	135,668
Colorado Electric	111,090	92,867	201,207	171,416
Total Industrial	310,865	264,439	592,558	504,572
Municipal:
Black Hills Power	7,709	8,147	15,394	15,930
Cheyenne Light	2,131	2,143	4,624	4,738
Colorado Electric	31,385	29,049	58,073	47,095
Total Municipal	41,225	39,339	78,091	67,763
Total Retail Quantity Sold	1,129,536	1,106,044	2,312,730	2,242,214
Contract Wholesale:
Total Contract Wholesale - Black Hills Power	71,999	77,653	167,227	181,437
Off-system Wholesale:
Black Hills Power	169,498	277,840	424,294	516,287
Cheyenne Light	42,250	61,514	94,606	131,822
Colorado Electric	50,178	38,238	80,924	70,015
Total Off-system Wholesale	261,926	377,592	599,824	718,124
Total Quantity Sold:
Black Hills Power	638,055	757,784	1,452,373	1,536,017
Cheyenne Light	326,258	322,256	668,899	669,996
Colorado Electric	499,148	481,249	958,509	935,762
Total Quantity Sold	1,463,461	1,561,289	3,079,781	3,141,775
Other Uses, Losses or Generation, net (a):
Black Hills Power	66,915	46,054	102,954	86,155
Cheyenne Light	33,814	38,155	68,280	64,572
Colorado Electric	21,878	50,157	65,016	93,009
Total Other Uses, Losses and Generation, net	122,607	134,366	236,250	243,736
Total Energy	1,586,068	1,695,655	3,316,031	3,385,511

__________

(a) Includes company uses, line losses, and excess exchange production.

37

	Three Months Ended June 30,
Degree Days	2014			2013
	Actual	Variance from 30-Year Average		Actual	Variance from 30-Year Average
Heating Degree Days:
Black Hills Power	1,025	2	%	1,227	43	%
Cheyenne Light	1,191	—	%	1,321	11	%
Colorado Electric	633	4	%	752	(1	)%
Combined	877	2	%	1,026	19	%
Cooling Degree Days:
Black Hills Power	99	(7	)%	78	(27	)%
Cheyenne Light	50	(2	)%	123	141	%
Colorado Electric	209	(8	)%	376	66	%
Combined	140	(7	)%	225	48	%

	Six Months Ended June 30,
Degree Days	2014			2013
	Actual	Variance from 30-Year Average		Actual	Variance from 30-Year Average
Heating Degree Days:
Black Hills Power	4,435	5	%	4,437	9	%
Cheyenne Light	4,397	4	%	4,483	6	%
Colorado Electric	3,303	3	%	3,502	4	%
Combined	3,905	4	%	4,012	6	%
Cooling Degree Days:
Black Hills Power	99	(7	)%	78	(27	)%
Cheyenne Light	50	(2	)%	123	141	%
Colorado Electric	209	(9	)%	376	66	%
Combined	140	(7	)%	225	49	%

Electric Utilities Power Plant Availability	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Coal-fired plants (a)	84.8	%	96.0	%	90.1	%	96.4	%
Other plants (b)(c)	89.9	%	95.5	%	84.0	%	97.1	%
Total availability	87.7	%	95.7	%	86.6	%	96.7	%

__________

(a) The three months and six months ended June 30, 2014 reflect a planned annual outage at Neil Simpson II and an unplanned outage for a catalyst repair at Wygen III.

(b) The three months and six months ended June 30, 2014 include a planned outage at Ben French CT's #1 and #2 for a controls upgrade.

(c) The six months ended June 30, 2014, reflects an unplanned outage due to a turbine bearing replacement and combustor upgrade at Pueblo Airport Generation Station.

Cheyenne Light Natural Gas Distribution

Included in the Electric Utilities is Cheyenne Light’s natural gas distribution system. The following table summarizes certain operating information for these natural gas distribution operations:

38

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Revenue - Natural Gas (in thousands):
Residential	$	4,519	$	4,033	$	12,743	$	11,565
Commercial	1,975		1,522		5,951		5,130
Industrial	616		505		1,903		1,403
Other Sales Revenue	230		197		480		416
Total Revenue - Natural Gas	$	7,340	$	6,257	$	21,077	$	18,514
Gross Margin (in thousands):
Residential	$	2,383	$	2,674	$	5,987	$	6,634
Commercial	631		748		1,962		2,240
Industrial	47		123		323		271
Other Gross Margin	228		197		480		416
Total Gross Margin	$	3,289	$	3,742	$	8,752	$	9,561
Volumes Sold (Dth):
Residential	450,715		492,261		1,485,892		1,585,261
Commercial	284,493		278,914		848,887		904,851
Industrial	120,558		137,212		376,485		364,159
Total Volumes Sold	855,766		908,387		2,711,264		2,854,271

39

Results of Operations for the Electric Utilities for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net income for the Electric Utilities was $11 million for the three months ended June 30, 2014, compared to $11 million for the three months ended June 30, 2013, as a result of:

Gross marginwas comparable to the prior year,reflecting increased rider margins of $2.2 million due to a return on additional investment in our generating facilities.Industrial megawatt hours sold increased 18%compared to the same period in the prior year, primarily driven by load growth at Cheyenne Light.These increases were offset by a38%decrease in cooling degree days compared to the same period in the prior year resulting in a $1.6 million decrease on lower residential and commercial megawatt hours sold,and a $0.6 million decrease in wholesale power volumes as a result of plant outages.Our Cheyenne Light gas utility experienced an11%decrease in heating degree days, primarily from April, resulting in a $0.5 million decrease in retail natural gas sales.

Operations and maintenanceincreased primarily due to increases in employee costs, regulatory support, and property taxes.

Depreciation and amortization was comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to lower interest rates from refinancing higher cost debt in the fourth quarter of 2013.

Other income (expense), net was comparable to the same period in the prior year.

Income tax benefit (expense): The effective tax rate is higher in 2014 primarily due to the research and development tax credit not being extended to 2014.

Results of Operations for the Electric Utilities for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net income for the Electric Utilities was $26 million for the six months ended June 30, 2014, compared to $23 million for the six months ended June 30, 2013, as a result of:

Gross marginincreased primarily due to a return on additional investments which increased base electric margins by $4.0 million and increased rider margins by $5.8 million. Industrial megawatt hours sold increased by approximately 18 percent, primarily due to load growth at Cheyenne Light. These increases are partially offset by a $1.8 million decrease from lower residential and commercial megawatt hours sold driven by a 38% decrease in cooling degree days compared to the same period in the prior year, a $1.0 million decrease in wholesale volumes sold, a $0.9 million decrease from the TCA, and a $0.5 million decrease from a construction savings incentive recognized in the prior year. Our Cheyenne Light gas utility experienced a decrease in heating degree days, resulting in a $0.8 million decrease in retail natural gas sales.

Operations and maintenanceincreased primarily due to an increase in employee costs, generation maintenance, regulatory support and property taxes.

Depreciation and amortization was comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to refinancing higher cost debt in the fourth quarter of 2013.

Other income (expense), net was comparable to the same period in the prior year.

Income tax benefit (expense): The effective tax rate is higher in 2014 primarily due to the research and development tax credit not being extended to 2014. The prior year reflected the entire year of the 2012 research and development tax credit due to retroactive reinstatement of the credit in January 2013 by the U.S. Congress.

40

Gas Utilities

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
	(in thousands)
Natural gas — regulated	$	95,350		$	98,635		$	(3,285	)	$	346,582		$	290,586		$	55,996
Other — non-regulated services	7,149			7,201			(52		)	15,254			15,062			192
Total revenue	102,499			105,836			(3,337		)	361,836			305,648			56,188
Natural gas — regulated	52,266			53,143			(877		)	223,040			173,523			49,517
Other — non-regulated services	3,675			3,517			158			7,397			7,234			163
Total cost of sales	55,941			56,660			(719		)	230,437			180,757			49,680
Gross margin	46,558			49,176			(2,618		)	131,399			124,891			6,508
Operations and maintenance	33,454			31,852			1,602			68,832			65,078			3,754
Depreciation and amortization	6,538			6,583			(45		)	13,059			13,086			(27		)
Total operating expenses	39,992			38,435			1,557			81,891			78,164			3,727
Operating income (loss)	6,566			10,741			(4,175		)	49,508			46,727			2,781
Interest expense, net	(3,722		)	(5,907		)	2,185			(7,574		)	(12,184		)	4,610
Other income (expense), net	19			(5		)	24			1			7			(6		)
Income tax benefit (expense)	(869		)	(1,637		)	768			(15,243		)	(12,875		)	(2,368		)
Net income (loss)	$	1,994		$	3,192		$	(1,198	)	$	26,692		$	21,675		$	5,017

41

	Three Months Ended June 30,				Six Months Ended June 30,
Revenue (in thousands)	2014		2013		2014		2013
Residential:
Colorado	$	9,435	$	9,850	$	33,122	$	29,644
Nebraska	17,519		22,932		80,411		71,784
Iowa	22,052		18,139		76,816		56,890
Kansas	10,348		12,620		43,625		38,385
Total Residential	59,354		63,541		233,974		196,703
Commercial:
Colorado	2,060		1,778		6,757		5,438
Nebraska	4,590		7,098		24,656		23,345
Iowa	11,202		8,442		37,116		26,217
Kansas	3,624		4,052		15,295		12,841
Total Commercial	21,476		21,370		83,824		67,841
Industrial:
Colorado	504		507		581		555
Nebraska	99		100		307		305
Iowa	1,141		709		2,313		1,454
Kansas	5,632		6,068		6,718		7,000
Total Industrial	7,376		7,384		9,919		9,314
Transportation:
Colorado	217		227		542		628
Nebraska	2,542		2,395		8,272		7,111
Iowa	983		999		2,744		2,538
Kansas	1,563		1,453		4,056		3,502
Total Transportation	5,305		5,074		15,614		13,779
Other Sales Revenue:
Colorado	36		22		67		(52		)
Nebraska	651		626		1,354		1,240
Iowa	262		190		414		302
Kansas	890		428		1,416		1,459
Total Other Sales Revenue	1,839		1,266		3,251		2,949
Total Regulated Revenue	95,350		98,635		346,582		290,586
Non-regulated Services	7,149		7,201		15,254		15,062
Total Revenue	$	102,499	$	105,836	$	361,836	$	305,648

42

	Three Months Ended June 30,				Six Months Ended June 30,
Gross Margin (in thousands)	2014		2013		2014		2013
Residential:
Colorado	$	3,597	$	3,884	$	9,969	$	10,122
Nebraska	9,925		11,055		30,814		29,366
Iowa	8,993		9,397		24,203		22,986
Kansas	6,529		6,925		18,113		17,129
Total Residential	29,044		31,261		83,099		79,603
Commercial:
Colorado	607		579		1,667		1,568
Nebraska	1,772		2,292		6,935		6,927
Iowa	2,300		2,592		7,525		7,044
Kansas	1,495		1,519		4,678		4,163
Total Commercial	6,174		6,982		20,805		19,702
Industrial:
Colorado	130		158		160		188
Nebraska	33		31		101		85
Iowa	61		81		146		163
Kansas	696		750		932		974
Total Industrial	920		1,020		1,339		1,410
Transportation:
Colorado	216		227		542		628
Nebraska	2,541		2,395		8,272		7,111
Iowa	982		999		2,743		2,538
Kansas	1,563		1,453		4,056		3,502
Total Transportation	5,302		5,074		15,613		13,779
Other Sales Margins:
Colorado	37		22		68		(52		)
Nebraska	653		626		1,356		1,240
Iowa	263		190		414		302
Kansas	692		318		849		1,079
Total Other Sales Margins	1,645		1,156		2,687		2,569
Total Regulated Gross Margin	43,085		45,493		123,543		117,063
Non-regulated Services	3,473		3,683		7,856		7,828
Total Gross Margin	$	46,558	$	49,176	$	131,399	$	124,891

43

	Three Months Ended June 30,		Six Months Ended June 30,
Distribution Quantities Sold and Transportation (in Dth)	2014	2013	2014	2013
Residential:
Colorado	1,018,966	1,268,892	4,040,400	4,190,227
Nebraska	1,278,283	2,056,892	8,264,576	7,794,565
Iowa	1,249,921	1,732,786	7,892,965	7,023,152
Kansas	715,890	1,044,593	4,597,445	4,260,899
Total Residential	4,263,060	6,103,163	24,795,386	23,268,843
Commercial:
Colorado	255,312	256,317	891,002	832,593
Nebraska	485,023	836,828	2,960,179	3,035,626
Iowa	884,997	1,164,878	4,370,689	3,970,551
Kansas	391,548	474,953	1,933,515	1,752,087
Total Commercial	2,016,880	2,732,976	10,155,385	9,590,857
Industrial:
Colorado	101,468	127,124	111,793	136,861
Nebraska	12,168	13,585	39,133	44,265
Iowa	119,710	129,772	313,573	272,096
Kansas	1,084,608	1,222,845	1,264,695	1,411,666
Total Industrial	1,317,954	1,493,326	1,729,194	1,864,888
Wholesale and Other:
Kansas	32,274	19,199	100,907	74,209
Total Wholesale and Other	32,274	19,199	100,907	74,209
Total Distribution Quantities Sold	7,630,168	10,348,664	36,780,872	34,798,797
Transportation:
Colorado	209,799	216,333	540,143	629,042
Nebraska	6,623,555	6,040,006	16,586,774	14,722,321
Iowa	4,319,339	4,790,583	10,476,705	10,469,740
Kansas	3,594,159	3,336,618	8,421,296	7,388,636
Total Transportation	14,746,852	14,383,540	36,024,918	33,209,739
Total Distribution Quantities Sold and Transportation	22,377,020	24,732,204	72,805,790	68,008,536

Our Gas Utilities are highly seasonal, and sales volumes vary considerably with weather and seasonal heating and industrial loads. Over 70% of our Gas Utilities’ revenue and margins are expected in the first and fourth quarters of each year. Therefore, revenue for and certain expenses of these operations fluctuate significantly among quarters. Depending upon the state in which our Gas Utilities operate, the winter heating season begins around November 1 and ends around March 31.

44

	Three Months Ended June 30,
	2014			2013
Heating Degree Days:	Actual	Variance from 30-Year Average		Actual	Variance from 30-Year Average
Colorado	924	—	%	972	5	%
Nebraska	580	1	%	769	33	%
Iowa	775	11	%	873	27	%
Kansas (a)	480	7	%	636	42	%
Combined (b)	711	5	%	842	24	%

	Six Months Ended June 30,
	2014			2013
Heating Degree Days:	Actual	Variance from 30-Year Average		Actual	Variance from 30-Year Average
Colorado	3,783	2	%	3,844	4	%
Nebraska	3,852	6	%	3,898	8	%
Iowa	4,949	18	%	4,616	14	%
Kansas (a)	3,169	8	%	3,186	9	%
Combined (b)	4,235	12	%	4,148	9	%

__________

(a) Kansas Gas has an approved weather normalization mechanism within its rate structure, which minimizes weather impact on gross margins.

(b) The combined heating degree days are calculated based on a weighted average of total customers by state excluding Kansas Gas due to its weather normalization mechanism.

Results of Operations for the Gas Utilities for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net income for the Gas Utilities was $2.0 million for the three months ended June 30, 2014, compared to Net income of $3.2 million for the three months ended June 30, 2013, as a result of:

Gross margindecreased primarily due to milder weather compared to the same period in the prior year resulting inlower residential and commercial volumes sold.Heating degree days were16%lower for the three months ended June 30, 2014, compared to the same period in the prior year and5%higher than normal.

Operations and maintenanceincreased primarily due to an increase in employee costs.

Depreciation and amortization were comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to lower interest rates from refinancing higher cost debt in the fourth quarter of 2013.

Other income (expense), net was comparable to the same period in the prior year.

Income tax benefit (expense): The effective tax rate for 2014 was slightly lower than 2013 due primarily to an increase in an estimated flow-through tax adjustment.

45

Results of Operations for the Gas Utilities for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net income for the Gas Utilities was $26.7 million for the six months ended June 30, 2014, compared to Net income of $21.7 million for the six months ended June 30, 2013, as a result of:

Gross marginincreased primarily due to higher residential and commercial consumption, and transport volumes sold driven primarily by a 7% increase in heating degree days experienced through the peak months of the winter heating season as compared to the same period last year. Heating degree days were 2% higher for the six months ended June 30, 2014, compared to the same period in the prior year and 12% higher than normal.

Operations and maintenanceincreased primarily due to an increase in employee costs and property taxes.

Depreciation and amortization were comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to refinancing higher cost debt in the fourth quarter of 2013.

Other income (expense), net was comparable to the same period in the prior year.

Income tax benefit (expense): The effective tax rate for 2014 was slightly lower than 2013 due primarily to an increase in an estimated flow-through tax adjustment.

Regulatory Matters — Utilities Group

The following summarizes our recent state and federal rate case and initial surcharge orders (in millions):

	Type of Service	Date Requested	Effective Date	Revenue Amount Requested		Revenue Amount Approved
Cheyenne Light (a)	Electric/Gas	12/2013	10/2014	$	14.1	$	9.2
Black Hills Power (b)	Electric	1/2014	pending	$	2.8	pending
Black Hills Power (c)	Electric	3/2014	pending	$	14.6	pending
Iowa Gas (d)	Gas	2/2014	4/2014	$	0.5	$	0.5
Kansas Gas (e)	Gas	4/2014	pending	$	7.3	pending
Colorado Electric (f)	Electric	4/2014	pending	$	7.2	pending

__________

(a) On July 31, 2014, the WPSC approved rate case settlement agreements authorizing an increase for Cheyenne Light of $8.4 million and $0.8 million for annual electric and natural gas revenue, respectively, effective October 1, 2014. The settlement also included a return on equity of 9.9%, and a capital structure of 54% equity and 46% debt. The WPSC’s decision provides Cheyenne Light a return on its investment in Cheyenne Prairie and associated infrastructure, and provides recovery of its share of operating expenses for the natural gas-fired facility.

(b) On January 17, 2014, Black Hills Power filed a rate request with the WPSC for an annual revenue increase of $2.8 million to recover investments made in electric infrastructure, primarily for Cheyenne Prairie. The filing seeks a return on equity of 10.25% and a capital structure of approximately 53.3% equity and 46.7% debt. Black Hills Power is seeking to implement the new rates on October 1, 2014, to coincide with Cheyenne Prairie’s expected in-service date.

(c) On March 31, 2014, Black Hills Power filed a rate request with the SDPUC to increase annual revenue by $14.6 million to recover operating expenses and infrastructure investments, primarily for Cheyenne Prairie. The filing seeks a return on equity of 10.25%, and a capital structure of approximately 53.3% equity and 46.7% debt. Black Hills Power is seeking to implement the new rates on October 1, 2014, to coincide with Cheyenne Prairie’s expected in-service date.

(d) On April 15, 2014, the IUB approved a capital investment recovery surcharge increase of $0.5 million.

(e) On April 29, 2014, Kansas Gas filed a rate request with the KCC to increase annual revenue by $7.3 million primarily to recover infrastructure and increased operating costs. The filing seeks a return on equity of 10.6%, and a capital structure of approximately 50.3% equity and 49.7% debt.

(f) On April 30, 2014, Colorado Electric filed a rate request with the CPUC for an annual revenue increase of $8.0 million to recover operating expenses and infrastructure investments, including those for the Busch Ranch Wind Farm. Colorado Electric seeks approval of a new rider pursuant to the Clean Air-Clean Jobs Act Adjustment, to recover a return on the expenditures associated with the construction of a $65 million natural gas-fired combustion turbine unit, previously approved by the CPUC to replace the W.N. Clark retirement. The filing seeks a return on equity of 10.3% and a capital structure of approximately 50.5% equity and 49.5% debt.A subsequent filing on June 27, 2014 reduced our request to $7.2 million to reflect updated cost information.

Non-regulated Energy Group

We report three segments within our Non-regulated Energy Group: Power Generation, Coal Mining and Oil and Gas.

Power Generation

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
	(in thousands)
Revenue	$	21,980		$	20,125		$	1,855		$	44,328		$	40,485		$	3,843
Operations and maintenance	8,733			8,161			572			16,410			15,952			458
Depreciation and amortization	1,154			1,313			(159		)	2,363			2,539			(176		)
Total operating expense	9,887			9,474			413			18,773			18,491			282
Operating income	12,093			10,651			1,442			25,555			21,994			3,561
Interest expense, net	(934		)	(2,706		)	1,772			(1,862		)	(5,380		)	3,518
Other (expense) income, net	2			(4		)	6			(7		)	(3		)	(4		)
Income tax (expense) benefit	(3,967		)	(2,910		)	(1,057		)	(8,419		)	(5,936		)	(2,483		)
Net income (loss)	$	7,194		$	5,031		$	2,163		$	15,267		$	10,675		$	4,592

____________

The generating facility located in Pueblo, Colorado is accounted for as a capital lease under GAAP; as such, revenue and depreciation expense are impacted by the accounting for this lease. Under the lease, the original cost of the facility is recorded at Colorado Electric and is being depreciated by Colorado Electric for segment reporting purposes.

46

The following table summarizes MWh for our Power Generation segment:

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Quantities Sold, Generated and Purchased (MWh)	(in thousands)
Sold
Black Hills Colorado IPP	273,200	186,921	559,156	421,117
Black Hills Wyoming	138,377	134,896	278,985	277,002
Total Sold	411,577	321,817	838,141	698,119
Generated
Black Hills Colorado IPP	273,200	186,921	559,156	421,117
Black Hills Wyoming	141,458	135,056	282,136	279,245
Total Generated	414,658	321,977	841,292	700,362
Purchased
Black Hills Colorado IPP	—	—	—	—
Black Hills Wyoming	16	721	1,005	721
Total Purchased	16	721	1,005	721

The following table provides certain operating statistics for our plants within the Power Generation segment:

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Contracted power plant fleet availability:
Coal-fired plant	98.7	%	94.0	%	99.0	%	97.0	%
Natural gas-fired plants	99.2	%	99.2	%	98.5	%	98.9	%
Total availability	99.1	%	98.0	%	98.6	%	98.5	%

Results of Operations for Power Generation for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net income for the Power Generation segment was $7.2 million for the three months ended June 30, 2014, compared to Net income of $5.0 million for the same period in 2013 as a result of:

Revenueincreased primarily due to an increase in megawatt hours delivered at higher prices and an increase in megawatt hours sold and pricing for off-system sales at Black Hills Wyoming.

Operations and maintenanceincreasedprimarily due to repairs and maintenance at Colorado IPP.

Depreciation and amortizationwas comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to refinancing higher cost project debt and settling associated interest rate swaps in the fourth quarter of 2013.

Other (expense) income, net was comparable to the same period in the prior year.

Income tax (expense) benefit: The effective tax rate is comparable to the same period in the prior year.

47

Results of Operations for Power Generation for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net income for the Power Generation segment was $15.3 million for the six months ended June 30, 2014, compared to Net income of $10.7 million for the same period in 2013 as a result of:

Revenueincreased primarily due to an increase in megawatts delivered at higher prices, an increase in fired hours and an increase in off-system megawatt hour sales and pricing at Black Hills Wyoming.

Operations and maintenance was comparable to the same period in the prior year.

Depreciation and amortization was comparable to the same period in the prior year.

Interest expense, netdecreased primarily due to refinancing higher cost project debt and settling associated interest rate swaps in the fourth quarter of 2013.

Other (expense) income, net was comparable to the same period in the prior year.

Income tax (expense) benefit: The effective tax rate is comparable to the same period in the prior year.

Coal Mining

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
	(in thousands)
Revenue	$	14,651		$	14,318		$	333		$	30,149		$	27,901		$	2,248
Operations and maintenance	10,023			9,251			772			20,154			19,402			752
Depreciation, depletion and amortization	2,570			2,964			(394		)	5,260			5,829			(569		)
Total operating expenses	12,593			12,215			378			25,414			25,231			183
Operating income (loss)	2,058			2,103			(45		)	4,735			2,670			2,065
Interest (expense) income, net	(113		)	(179		)	66			(216		)	(310		)	94
Other income, net	589			581			8			1,192			1,194			(2		)
Income tax benefit (expense)	(518		)	(532		)	14			(1,231		)	(516		)	(715		)
Net income (loss)	$	2,016		$	1,973		$	43		$	4,480		$	3,038		$	1,442

The following table provides certain operating statistics for our Coal Mining segment (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Tons of coal sold	1,063		1,079		2,150		2,132
Cubic yards of overburden moved	1,010		930		1,920		1,989
Revenue per ton	$	13.79	$	13.27	$	14.03	$	13.09

Results of Operations for Coal Mining for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net income for the Coal Mining segment was $2.0 million for the three months ended June 30, 2014, compared to Net income of $2.0 million for the same period in 2013 as a result of:

Revenueincreased primarily due to a 4%increase in price per ton sold, partially offset by a 1%decrease in tons sold. Approximately 50% of our coal production is sold under contracts that include price adjustments based on actual mining costs, including income taxes.

Operations and maintenanceincreasedprimarily due to materials and outside services for major maintenance projects.

48

Depreciation, depletion and amortizationdecreasedprimarily due to lower depreciation on mine assets and mine reclamation asset retirement costs.

Interest (expense) income, net was comparable to the same period in the prior year.

Other income, net was comparable to the same period in the prior year.

Income tax benefit (expense): The effective tax rate is comparable to the same period in the prior year.

49

Results of Operations for Coal Mining for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net income for the Coal Mining segment was $4.5 million for the six months ended June 30, 2014, compared to Net income of $3.0 million for the same period in 2013 as a result of:

Revenueincreased primarily due to a 7%increase in price per ton sold and a 1%increase in tons sold. Approximately 50% of our coal production is sold under contracts that include price adjustments based on actual mining costs, including income taxes.

Operations and maintenanceincreased primarily due to materials and outside services on major maintenance projects, partially offset by lower overburden removal costs, lower employee costs, and a favorable coal tax adjustment of $0.7 million.

Depreciation, depletion and amortizationdecreasedprimarily due to lower depreciation on mine assets and mine reclamation asset retirement costs.

Interest (expense) income, net was comparable to the same period in the prior year.

Other income, net was comparable to the same period in the prior year.

Income tax benefit (expense): The increase in the effective tax rate in 2014 is due primarily to the reduced impact of the tax benefit of percentage depletion.

Oil and Gas

	Three Months Ended June 30,									Six Months Ended June 30,
	2014			2013			Variance			2014			2013			Variance
	(in thousands)
Revenue	$	15,148		$	11,814		$	3,334		$	29,998		$	27,158		$	2,840
Operations and maintenance	10,239			9,995			244			21,378			20,250			1,128
Depreciation, depletion and amortization	7,290			5,214			2,076			13,923			10,581			3,342
Total operating expenses	17,529			15,209			2,320			35,301			30,831			4,470
Operating income (loss)	(2,381		)	(3,395		)	1,014			(5,303		)	(3,673		)	(1,630		)
Interest income (expense), net	(442		)	(54		)	(388		)	(897		)	25			(922		)
Other income (expense), net	49			81			(32		)	87			4			83
Income tax benefit (expense)	1,114			1,404			(290		)	2,431			1,627			804
Net income (loss)	$	(1,660	)	$	(1,964	)	$	304		$	(3,682	)	$	(2,017	)	$	(1,665	)

The following tables provide certain operating statistics for our Oil and Gas segment:

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Production:
Bbls of oil sold	92,228	65,304	166,490	162,107
Mcf of natural gas sold	1,840,826	1,784,389	3,600,790	3,517,339
Gallons of NGL sold	1,764,111	895,720	2,899,832	1,841,534
Mcf equivalent sales	2,646,210	2,304,173	5,013,992	4,753,057

50

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Average price received: (a)
Oil/Bbl	$	78.18	$	95.15	$	84.56	$	91.71
Gas/Mcf	$	3.17	$	2.35	$	3.25	$	2.63
NGL/gallon	$	0.80	$	0.73	$	0.95	$	0.84
Depletion expense/Mcfe	$	2.36	$	1.82	$	2.31	$	1.80

__________

(a) Net of hedge settlement gains and losses.

The following is a summary of certain average operating expenses per Mcfe:

	Three Months Ended June 30, 2014								Three Months Ended June 30, 2013
Producing Basin	LOE		Gathering,  Compression  and Processing		Production Taxes		Total		LOE		Gathering,  Compression and Processing		Production Taxes			Total
San Juan	$	1.39	$	0.46	$	0.59	$	2.44	$	1.39	$	0.40	$	0.52		$	2.31
Piceance	0.26		0.23		0.35		0.84		0.80		0.52		0.27			1.59
Powder River	1.55		—		1.15		2.70		2.00		—		1.23			3.23
Williston	1.31		—		1.41		2.72		1.43		—		2.52			3.95
All other properties	1.30		—		0.77		2.07		0.65		—		(0.48		)	0.17
Total weighted average	$	1.08	$	0.23	$	0.72	$	2.03	$	1.32	$	0.27	$	0.55		$	2.14

	Six Months Ended June 30, 2014								Six Months Ended June 30, 2013
Producing Basin	LOE		Gathering,  Compression  and Processing		Production Taxes		Total		LOE		Gathering,  Compression and Processing		Production Taxes			Total
San Juan	$	1.46	$	0.45	$	0.61	$	2.52	$	1.34	$	0.37	$	0.47		$	2.18
Piceance	0.11		0.23		0.45		0.79		0.73		0.58		0.30			1.61
Powder River	1.90		—		1.23		3.13		1.62		—		1.24			2.86
Williston	1.08		—		1.59		2.67		0.94		—		1.34			2.28
All other properties	1.47		—		0.36		1.83		0.67		—		(0.08		)	0.59
Total weighted average	$	1.13	$	0.23	$	0.73	$	2.09	$	1.19	$	0.25	$	0.60		$	2.04

51

Results of Operations for Oil and Gas for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net loss for the Oil and Gas segment was $1.7 million for the three months ended June 30, 2014, compared to Net loss of $2.0 million for the same period in 2013 as a result of:

Revenueincreased primarily due to a 15%increasein volumes sold driven by production from two new Piceance Mancos Shale wells and an increase in non-operated Bakken crude oil volumes sold,and a35% increase in the average hedged price received for natural gas sold.These increases were partially offset by an18%decrease in the average price received for crude oil sold.

Operations and maintenancewas comparable to the same period in the prior year.

Depreciation, depletion and amortizationincreased primarily due to a higher depletion rate, applied to greater production.

Interest income (expense), net was comparable to prior year.

Other income (expense), net was comparable to the same period in the prior year.

Income tax (expense) benefit: The effective tax rate is higher in 2014 primarily due to the research and development tax credit not being extended to 2014.

Results of Operations for Oil and Gas for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net loss for the Oil and Gas segment was $3.7 million for the six months ended June 30, 2014, compared to Net loss of $2.0 million for the same period in 2013 as a result of:

Revenueincreased primarily due to a 5%increase in volumes sold driven by increased gallons of NGL sales from production on the two new Mancos Shale wells, and a 24% increase in the average hedged price received for natural gas sold, partially offset by an 8% decrease in the average price received for crude oil sold.

Operations and maintenanceincreased primarily due to higher non-operated well costs, higher production taxes and ad valorem taxes on higher natural gas revenue.

Depreciation, depletion and amortizationincreased primarily due to a higher depletion rate, applied to greater production.

Interest income (expense), netincreased primarily due to interest received on third-party non-operated well revenue in the prior year that offset interest expense.

Other income (expense), net was comparable to the same period in the prior year.

Income tax (expense) benefit: The effective tax rate is higher in 2014 primarily due to the research and development tax credit not being extended to 2014. The prior year reflected the entire year of the 2012 research and development tax credit due to retroactive reinstatement of the credit in January 2013 by the U.S. Congress.

52

Corporate Activity

Results of Operations for Corporate activities for the Three Months Ended June 30, 2014 Compared to the Three Months Ended June 30, 2013: Net loss for Corporate was $1.2 million for the three months ended June 30, 2014, compared to Net income of $11.7 million for the three months ended June 30, 2013 as a result of:

• The settlement of the de-designated interest rate swaps in the fourth quarter of 2013, resulted in no activity for the three months ended June 30, 2014, compared to the recognition of an unrealized, non-cash mark-to-market gain of $18.8 million during the three months ended June 30, 2013.

• The income for the three months ended June 30, 2014 included lower interest expense as compared to the three months ended June 30, 2013, as a result of lower interest rate debt from refinancing activities in fourth quarter 2013 and the settlement of the de-designated interest rate swaps.

Results of Operations for Corporate activities for the Six Months Ended June 30, 2014 Compared to the Six Months Ended June 30, 2013: Net loss for Corporate was $0.8 million for the six months ended June 30, 2014, compared to Net income of $17.4 million for the six months ended June 30, 2013 as a result of:

• The settlement of the de-designated interest rate swaps in the fourth quarter of 2013, resulted in no activity for the six months ended June 30, 2014, compared to the recognition of an unrealized, non-cash mark-to-market gain of $26.2 million during the six months ended June 30, 2013.

• The income for the six months ended June 30, 2014 included lower interest expense as compared to the six months ended June 30, 2013, as a result of lower interest rate debt from refinancing activities in fourth quarter 2013 and the settlement of the de-designated interest rate swaps.

Critical Accounting Policies

There have been no material changes in our critical accounting policies from those reported in our 2013 Annual Report on Form 10-K filed with the SEC. For more information on our critical accounting policies, see Part II, Item 7 of our 2013 Annual Report on Form 10-K.

Liquidity and Capital Resources

OVERVIEW

BHC and its subsidiaries require significant amounts of cash to support and grow our business. Our predominant source of cash is supplied by our operations and supplemented with corporate borrowings. This cash is used for, among other things, working capital, capital expenditures, dividends, pension funding, investments in or acquisitions of assets and businesses, payment of debt obligations and redemption of outstanding debt and equity securities when required or financially appropriate.

The most significant items impacting cash are our capital expenditures, the purchase of natural gas for our Utilities Group and our Power Generation segment, and the payment of dividends to our shareholders. Generally, we experience significant cash requirements during peak months of the winter heating season due to higher natural gas consumption.

We believe that our cash on hand, operating cash flows, existing borrowing capacity and ability to complete new debt and equity financings, taken in their entirety, provide sufficient capital resources to fund our ongoing operating requirements, debt maturities, anticipated dividends, and anticipated capital expenditures discussed in this section.

53

Significant Factors Affecting Liquidity

Although we believe we have sufficient resources to fund our cash requirements, there are many factors with the potential to influence our cash flow position, including seasonality, commodity prices, significant capital projects, requirements imposed by state and federal agencies, and economic market conditions. We have implemented risk mitigation programs, where possible, to stabilize cash flow; however, the potential for unforeseen events affecting cash needs will continue to exist.

Cash Flow Activities

The following table summarizes our cash flows for the six months ended June 30, 2014 and 2013 (in thousands):

Cash provided by (used in):	2014			2013			Increase (Decrease)
Operating activities	$	173,835		$	197,385		$	(23,550	)
Investing activities	$	(180,296	)	$	(145,224	)	$	(35,072	)
Financing activities	$	13,317		$	(36,990	)	$	50,307

Year-to-Date 2014 Compared to Year-to-Date 2013

Operating Activities

Net cash provided by operating activities was $24 millionlower for the six months ended June 30, 2014, than for the same period in 2013 primarily attributable to:

• Cash earnings (net income plus non-cash adjustments) were $4.1 millionhigher for the six months ended June 30, 2014 than for the same period in the prior year.

• Net outflows from operating assets and liabilities were $24 million for the six months ended June 30, 2014, compared to net cash outflows of $11 million in the same period in the prior year. Changes are primarily due to:

• Increased working capital requirements resulting from higher natural gas volumes sold during our peak winter heating season months driven by cold weather and higher natural gas prices creating an increase in fuel cost adjustments recorded in regulatory assets in our Utility Group; and

• Receipt in 2013 of approximately $8.4 million from a government grant relating to the Busch Ranch wind project.

Investing Activities

Net cash used in investing activities was $180 million for the six months ended June 30, 2014, compared to net cash used in investing activities of $145 million for the same period in 2013 for a variance of $35 million. The variance was primarily driven by:

• Capital expenditures of approximately $177 million for the six months ended June 30, 2014, compared to $147 million for the six months ended June 30, 2013. The increase is related primarily to the construction of Cheyenne Prairie at our Electric Utilities segment.

54

Financing Activities

Net cash provided by financing activities for the six months ended June 30, 2014, was $13.3 million, compared to net cash used in financing activities for the same period in 2013 of $37 million for a variance of $50 million. The variance was primarily driven by:

• Net short-term borrowings under the revolving credit facility for the six months ended June 30, 2014 were used primarily to fund additional working capital requirements due to colder weather during the peak winter heating season and the increase in overall capital expenditures. The prior period reflected the refinancing of the $275 million term loan, proceeds of which, replaced a short term loan of $150 million, a short term loan of $100 million, and $25 million used to pay off short-term borrowings under the Revolving Credit Facility.

Dividends

Dividends paid on our common stock totaled $34.8 million for the six months ended June 30, 2014, or $0.78 per share. On July 30, 2014, our board of directors declared a quarterly dividend of $0.39 per share payable September 1, 2014, which is equivalent to an annual dividend rate of $1.56 per share. The determination of the amount of future cash dividends, if any, to be declared and paid will depend upon, among other things, our financial condition, funds from operations, the level of our capital expenditures, restrictions under our Revolving Credit Facility and our future business prospects.

Debt

Financing Transactions and Short-Term Liquidity

Our principal sources to meet day-to-day operating cash requirements are cash from operations and our corporate Revolving Credit Facility.

Revolving Credit Facility

On May 29, 2014, we amended our $500 million corporate Revolving Credit Facility agreement to extend the term through May 29, 2019. This facility is substantially similar to the former agreement, which includes an accordion feature that allows us, with the consent of the administrative agent and issuing agents, to increase the capacity of the facility to $750 million. Borrowings continue to be available under a base rate or various Eurodollar rate options. The interest costs associated with the letters of credit or borrowings and the commitment fee under the Revolving Credit Facility are determined based upon our most favorable Corporate credit rating from S&P and Moody’s for our unsecured debt. Based on our credit ratings, the margins for base rate borrowings, Eurodollar borrowings and letters of credit were 0.125%, 1.125% and 1.125%, respectively, from May 29, 2014 through June 30, 2014; a reduction of 0.250% for each method of borrowing. A commitment fee is charged on the unused amount of the Revolving Credit Facility and is 0.175% based on our credit rating, a reduction of 0.025% compared to the prior arrangement.

Our Revolving Credit Facility had the following borrowings, outstanding letters of credit and available capacity (in millions):

		Current		Borrowings at		Letters of Credit at		Available Capacity at
Credit Facility	Expiration	Capacity		June 30, 2014		June 30, 2014		June 30, 2014
Revolving Credit Facility	May 29, 2019	$	500	$	133	$	20	$	347

The Revolving Credit Facility contains customary affirmative and negative covenants, such as limitations on the creation of new indebtedness and on certain liens, restrictions on certain transactions, and maintaining a certain recourse leverage ratio. Under the Revolving Credit Facility, our recourse leverage ratio is calculated by dividing the sum of our recourse debt, letters of credit and certain guarantees issued, by total capital, which includes recourse indebtedness plus our net worth. Subject to applicable cure periods, a violation of any of these covenants would constitute an event of default that entitles the lenders to terminate their remaining commitments and accelerate all principal and interest outstanding. We were in compliance with these covenants as of June 30, 2014.

55

The Revolving Credit Facility prohibits us from paying cash dividends if a default or an event of default exists prior to, or would result after, paying a dividend. Although these contractual restrictions exist, we do not anticipate triggering any default measures or restrictions.

Hedges and Derivatives

Interest Rate Swaps

We have entered into floating-to-fixed interest rate swap agreements to reduce our exposure to interest rate fluctuations. We have $75 million notional amount floating-to-fixed interest rate swaps with a maximum remaining term of approximately 2.5 years. These swaps have been designated as cash flow hedges for the Revolving Credit Facility, and accordingly their mark-to-market adjustments are recorded in Accumulated other comprehensive income (loss) on the accompanying Condensed Consolidated Balance Sheets. The mark-to-market value of these swaps was a liability of $7.7 million at June 30, 2014.

Financing Activities

On June 30, 2014, Black Hills Power and Cheyenne Light entered into Bond Purchase Agreements, to authorize the sale of $160 million of first mortgage bonds in a private placement to finance Cheyenne Prairie. Black Hills Power will issue $85 million of 4.43% first mortgage bonds due October 20, 2044. Cheyenne Light will issue $75 million of 4.53% first mortgage bonds due October 20, 2044. The closing date for the sale of the first mortgage bonds for both utilities is anticipated to be October 1, 2014, subject to satisfaction of customary closing conditions.

On November 19, 2013, we entered into a $525 million, 4.25% senior unsecured note expiring on November 30, 2023. The proceeds of this debt were used to:

• Redeem our $250 million senior unsecured 9.0% notes originally due on May 15, 2014. This repayment occurred on December 19, 2013, for approximately $261 million which included a make-whole provision of approximately $8.5 million and accrued interest.

• Repay our variable interest rate Black Hills Wyoming project financing with a remaining balance of $87 million originally due on December 9, 2016, and settle the interest rate swaps designated to this project financing of $8.5 million.

• Settle the $250 million notional de-designated interest rate swaps for approximately $64 million.

• Pay down $55 million of the Revolving Credit Facility.

• Remainder was used for general corporate purposes.

On June 21, 2013, we entered into a new two-year $275 million term loan expiring on June 19, 2015. The proceeds from this new term loan repaid the $150 million term loan due on June 24, 2013, the $100 million long-term corporate term loan due on September 30, 2013, and $25 million in short-term borrowing under our Revolving Credit Facility. At June 30, 2014, the cost of borrowing under this new term loan was 1.3125% (LIBOR plus a margin of 1.125%).

Future Financing Plans

We anticipate the following financing activities:

• Closing on the delayed-draw private placement bonds Black Hills Power and Cheyenne Light executed on June 30, 2014 to finance Cheyenne Prairie. It’s anticipated that Black Hills Power and Cheyenne Light will execute the draw of $85 million and $75 million, respectively, on October 1, 2014; and

• Evaluate options for the $275 million term loan expiring on June 19, 2015.

56

Dividend Restrictions

As a utility holding company which owns several regulated utilities, we are subject to various regulations that could influence our liquidity. Our utilities in Colorado, Iowa, Kansas and Nebraska have regulatory agreements in which they cannot pay dividends if they have issued debt to third parties and the payment of a dividend would reduce their equity ratio to below 40% of their total capitalization; and neither Black Hills Utility Holdings nor its subsidiaries can extend credit to the Company except in ordinary course of business and upon reasonable terms consistent with market terms. The use of our utility assets as collateral generally requires the prior approval of the state regulators in the state in which the utility assets are located. Additionally, our utility subsidiaries may generally be limited to the amount of dividends allowed by state regulatory authorities to be paid to us as a utility holding company and also may have further restrictions under the Federal Power Act. As a result of our holding company structure, our right as a common shareholder to receive assets of any of our direct or indirect subsidiaries upon a subsidiary’s liquidation or reorganization is junior to the claims against the assets of such subsidiaries by their creditors. Therefore, our holding company debt obligations are effectively subordinated to all existing and future claims of the creditors of our subsidiaries, including trade creditors, debt holders, secured creditors, taxing authorities, and guarantee holders. As of June 30, 2014, the restricted net assets at our Electric Utilities and Gas Utilities were approximately $141 million.

Our credit facilities and other debt obligations contain restrictions on the payment of cash dividends upon a default or event of default. An event of default would be deemed to have occurred if we did not meet certain financial covenants. The only financial covenant under our Revolving Credit Facility is a recourse leverage ratio not to exceed 0.65 to 1.00. Additionally, covenants within Cheyenne Light’s financing agreements require Cheyenne Light to maintain a debt to capitalization ratio of no more than 0.60 to 1.00. As of June 30, 2014, we were in compliance with this covenant.

There have been no other material changes in our financing transactions and short-term liquidity from those reported in Item 7 of our 2013 Annual Report on Form 10-K filed with the SEC.

Credit Ratings

Financing for operational needs and capital expenditure requirements not satisfied by operating cash flows depends upon the cost and availability of external funds through both short and long-term financing. The inability to raise capital on favorable terms could negatively affect our ability to maintain or expand our businesses. Access to funds is dependent upon factors such as general economic and capital market conditions, regulatory authorizations and policies, our credit ratings, cash flows from routine operations and the credit ratings of counterparties. After assessing the current operating performance, liquidity and our credit ratings, management believes that we will have access to the capital markets at prevailing market rates for companies with comparable credit ratings. Credit ratings are prepared by third party rating agencies and are not recommendations to buy, sell, or hold securities and may be subject to revision or withdrawal at any time by the assigning rating agency. Each rating should be evaluated independently of any other rating.

The following table represents the credit ratings and outlook of BHC at June 30, 2014:

Rating Agency	Senior Unsecured Rating	Outlook
S&P	BBB	Stable
Moody’s (a)	Baa1	Stable
Fitch (b)	BBB+	Stable

__________

(a) On January 30, 2014, Moody’s upgraded the BHC credit rating to Baa1 with a Stable outlook.

(b) On June 13, 2014, Fitch upgraded the BHC credit rating to BBB+ with a Stable outlook.

57

The following table represents the credit ratings of Black Hills Power’s Senior Secured Mortgage Bonds at June 30, 2014:

Rating Agency	Senior Secured Rating
S&P	A-
Moody’s *	A1
Fitch **	A

___________

* On January 30, 2014, Moody’s upgraded the BHP credit rating to A1 with a Stable outlook.

** On June 13, 2014, Fitch upgraded the BHP credit rating to A with a Stable outlook.

Capital Requirements

Actual and forecasted capital requirements are as follows (in thousands):

	Expenditures for the		Total		Total		Total
	Six Months Ended June 30, 2014 (a)		2014 Planned Expenditures (b)		2015 Planned Expenditures		2016 Planned Expenditures
Utilities:
Electric Utilities	$	96,249	$	250,700	$	189,300	$	160,500
Gas Utilities	22,176		63,000		62,000		47,600
Non-regulated Energy:
Power Generation	48		2,500		5,200		3,200
Coal Mining	2,755		6,600		6,200		7,300
Oil and Gas	27,859		117,800		122,700		122,200
Corporate	9,013		8,700		5,900		6,100
	$	158,100	$	449,300	$	391,300	$	346,900

__________    

(a)    Expenditures for the six months ended June 30, 2014 include the impact of accruals for property, plant and equipment.

(b)    Includes actual expenditures for the six months ended June 30, 2014.

We continue to evaluate potential future acquisitions and other growth opportunities that are dependent upon the availability of economic opportunities; as a result, capital expenditures may vary significantly from the estimates identified above.

Contractual Obligations

Except as noted below, there have been no significant changes in the contractual obligations from those previously disclosed in Note 18 of our Notes to the Consolidated Financial Statements in our 2013 Annual Report on Form 10-K.

Natural Gas Delivery Agreement

In 2012, we entered into a ten-year gas gathering and processing contract for natural gas production from our properties in the Piceance Basin in Colorado, under which we pay a gathering fee per Mcf. The contract requires us to deliver a minimum of 20,000 Mcf per day. This agreement became effective in first quarter of 2014 upon completion of the processing infrastructure capable of handling the committed volumes. We believe that our reserves dedicated to the gathering system, and the projected volumes are adequate to materially satisfy our delivery commitments under this agreement.

Construction Commitments

Construction of Cheyenne Prairie, a 132 MW natural gas-fired electric generating facility jointly owned by Cheyenne Light and Black Hills Power is expected to cost approximately$222 million. Construction is expected to be completed by September 30, 2014. As of June 30, 2014, contracts for equipment purchases and for construction were 100% and 98% committed, respectively.

58

Bond Purchase Agreements

On June 30, 2014, Black Hills Power and Cheyenne Light entered into agreements to issue $160 million of first mortgage bonds to finance Cheyenne Prairie. Black Hills Power will issue $85 million of 4.43% coupon first mortgage bonds due October 20, 2044, and Cheyenne Light will issue $75 million of 4.53% coupon first mortgage bonds due October 20, 2044. The closing date for the sale of the first mortgage bonds for both utilities is anticipated October 1, 2014.

Guarantees

Except as noted below, there have been no significant changes to guarantees from those previously disclosed in Note 19 of the Notes to the Consolidated Financial Statements in our 2013 Annual Report on Form 10-K.

During the second quarter, guarantees of payment obligations arising from commodity transactions of BHUH for natural gas supply were reduced by $70 million and no longer exist, primarily due to improvement of the corporate credit rating, as well as the conversion of certain guarantees to letters of credit.

New Accounting Pronouncements

Other than the pronouncements reported in our 2013 Annual Report on Form 10-K filed with the SEC and those discussed in Note 1 of the Notes to Condensed Consolidated Financial Statements in this Quarterly Report on Form 10-Q, there have been no new accounting pronouncements that are expected to have a material effect on our financial position, results of operations, or cash flows.

FORWARD-LOOKING INFORMATION

This Quarterly Report on Form 10-Q contains forward-looking statements as defined by the SEC. Forward-looking statements are all statements other than statements of historical fact, including without limitation those statements that are identified by the words “anticipates,” “estimates,” “expects,” “intends,” “plans,” “predicts” and similar expressions, and include statements concerning plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements that are other than statements of historical facts. From time to time, the Company may publish or otherwise make available forward-looking statements of this nature, including statements contained within Item 2 - Management’s Discussion & Analysis of Financial Condition and Results of Operations.

Forward-looking statements involve risks and uncertainties, which could cause actual results or outcomes to differ materially from those expressed. The Company’s expectations, beliefs and projections are expressed in good faith and are believed by the Company to have a reasonable basis, including without limitation, management’s examination of historical operating trends, data contained in the Company’s records and other data available from third parties. Nonetheless, the Company’s expectations, beliefs or projections may not be achieved or accomplished.

Any forward-looking statement contained in this document speaks only as of the date on which the statement was made, and the Company undertakes no obligation to update any forward-looking statement or statements to reflect events or circumstances that occur after the date on which the statement was made or to reflect the occurrence of unanticipated events. New factors emerge from time to time, and it is not possible for management to predict all of the factors, nor can it assess the effect of each factor on the Company’s business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statement. All forward-looking statements, whether written or oral and whether made by or on behalf of the Company, are expressly qualified by the risk factors and cautionary statements described in our 2013 Annual Report on Form 10-K including statements contained within Item 1A - Risk Factors of our 2013 Annual Report on Form 10-K, Part II, Item 1A of this Quarterly Report on Form 10-Q and other reports that we file with the SEC from time to time.

59

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Utilities

Our utility customers are exposed to natural gas price volatility; therefore, as allowed or required by state utility commissions, we have entered into commission-approved hedging programs utilizing natural gas futures, options and basis swaps to reduce our customers’ underlying exposure to these fluctuations. The fair value of our Utilities Group’s derivative contracts is summarized below (in thousands) as of:

	June 30, 2014			December 31, 2013			June 30, 2013
Net derivative (liabilities) assets	$	(1,647	)	$	(6,071	)	$	(7,203	)
Cash collateral offset in Derivatives	3,384			6,733			7,203
Cash Collateral included in Other current assets	2,767			3,390			2,938
Net receivable (liability) position	$	4,504		$	4,052		$	2,938

Oil and Gas Activities

We have entered into agreements to hedge a portion of our estimated 2014, 2015 and 2016 natural gas and crude oil production from the Oil and Gas segment. The hedge agreements in place at June 30, 2014, were as follows:

Natural Gas

	March 31,		June 30,		September 30,		December 31,		Total Year
2014
Swaps - MMBtu	—		—		1,335,000		1,305,000		2,640,000
Weighted Average Price per MMBtu	$	—	$	—	$	4.03	$	4.04	$	4.03
2015
Swaps - MMBtu	1,217,500		1,180,000		955,000		1,000,000		4,352,500
Weighted Average Price per MMBtu	$	4.24	$	4.03	$	4.00	$	4.04	$	4.08
2016
Swaps - MMBtu	587,500		572,500		567,500		545,000		2,272,500
Weighted Average Price per MMBtu	$	3.91	$	3.98	$	4.08	$	3.90	$	3.97

Crude Oil

	March 31,		June 30,		September 30,		December 31,		Total Year
2014
Swaps - Bbls	—		—		57,000		57,000		114,000
Weighted Average Price per Bbl	$	—	$	—	$	90.55	$	90.66	$	90.60
2015
Swaps - Bbls	55,500		51,000		42,000		36,000		184,500
Weighted Average Price per Bbl	$	89.98	$	87.84	$	88.18	$	87.92	$	88.48
2016
Swaps - Bbls	33,000		33,000		30,000		30,000		126,000
Weighted Average Price per Bbl	$	83.45	$	83.45	$	83.33	$	83.33	$	83.39

60

Financing Activities

We engage in activities to manage risks associated with changes in interest rates. We have entered into floating-to-fixed interest rate swap agreements to reduce our exposure to interest rate fluctuations associated with our floating rate debt obligations. Further details of the swap agreements are set forth in Note 8 of the Notes to Consolidated Financial Statements in our 2013 Annual Report on Form 10-K and in Note 8 of the Notes to the Condensed Consolidated Financial Statements in this Quarterly Report on Form 10-Q.

The contract or notional amounts, terms of our interest rate swaps and the interest rate swaps balances reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014			December 31, 2013			June 30, 2013
	Designated  Interest Rate Swaps (a)			Designated Interest Rate Swaps (a)			Designated Interest Rate Swaps (b)			De-designated Interest Rate Swaps (c)
Notional	$	75,000		$	75,000		$	150,000		$	250,000
Weighted average fixed interest rate	4.97		%	4.97		%	5.04		%	5.67		%
Maximum terms in years	2.5			3.0			3.5			0.5
Derivative liabilities, current	$	3,480		$	3,474		$	6,965		$	61,899
Derivative liabilities, non-current	$	4,251		$	5,614		$	12,384		$	—
Pre-tax accumulated other comprehensive income (loss)	$	(7,731	)	$	(9,088	)	$	(19,349	)	$	—

__________

(a) These swaps are designated to borrowings on our Revolving Credit Facility, and are priced using three-month LIBOR, matching the floating portion of the related debt.

(b) At June 30, 2013, $75 million of these interest rate swaps were designated to borrowings on our Revolving Credit Facility and $75 million were designated to borrowings on our project financing debt at Black Hills Wyoming. These swaps are priced using three-month LIBOR, matching the floating portion of the related swaps. The portion of the swaps that were designated to Black Hills Wyoming were settled during the fourth quarter of 2013 upon repayment of the Black Hills Wyoming project financing.

(c) These swaps were settled during the fourth quarter of 2013.

Based on June 30, 2014market interest rates and balances related to our interest rate swaps, a loss of approximately$3.5 millionwould be realized, reported in pre-tax earnings and reclassified from AOCI during the next 12 months.Estimated and actual realized gains or losses will change during future periods as market interest rates change.

ITEM 4.CONTROLS AND PROCEDURES

Our Chief Executive Officer and Chief Financial Officer evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934) as of June 30, 2014. Based on their evaluation, they have concluded that our disclosure controls and procedures are effective.

During the quarter ended June 30, 2014, there have been no changes in our internal control over financial reporting that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

61

BLACK HILLS CORPORATION

Part II — Other Information

ITEM 1. Legal Proceedings

For information regarding legal proceedings, see Note 18 in Item 8 of our 2013 Annual Report on Form 10-K and Note 14 in Item 1 of Part I of this Quarterly Report on Form 10-Q, which information from Note 14 is incorporated by reference into this item.

ITEM 1A. Risk Factors

Except as noted below, there are no material changes to the risk factors previously disclosed in Item 1A of Part I in our 2013 Annual Report on Form 10-K.

ENVIRONMENTAL RISKS

Federal and state laws concerning greenhouse gas regulations and air emissions may materially increase our generation and production costs and could render some of our generating units uneconomical to operate and maintain.

We own and operate regulated and non-regulated fossil-fuel generating plants in South Dakota, Wyoming, and Colorado. Recent developments under federal and state laws and regulations governing air emissions from fossil-fuel generating plants will likely result in more stringent emission limitations, which could have a material impact on our costs of operations. In addition to the environmental matters identified in Item 1A of our Annual Report on    Form 10-K under the caption “Environmental Matters”, the following recently proposed regulations could negatively impact our operations.

On June 2, 2014, the EPA proposed the Clean Power Plan to cut carbon emissions from existing electric generating units. The design of the Clean Power Plan is to decrease existing coal-fired generation, and increase the utilization of existing gas generation, increase renewable energy, and demand side management. This rule could have a significant impact on our coal and natural gas generating fleet. The rule calls for states to develop plans to meet their assigned emission rate targets by 2030. The rule also allows states to formulate a regional approach whereby they would join with other states and be assigned a new single target for the group. We are currently evaluating this proposal, but cannot predict the impact on operations as this rule is expected to be final in June 2015, and state plans are expected to be due at the earliest in June 2016, with extensions possible to 2017 and 2018. We expect any impact to us to be mitigated through the recent Osage, Ben French, Neil Simpson I and W.N. Clark plant closures.

The Clean Power Plan could have a significant impact on our WRDC coal mine. Coal competes with other energy sources, such as natural gas, wind, solar and hydropower. If the Clean Power Plan Rule regulations were to have an adverse effect on coal as a domestic energy source, this rule could have a significant impact on our coal mining operations.

New or more stringent regulations or other energy efficiency requirements could require us to incur significant additional costs relating to, among other things, the installation of additional emission control equipment, the acceleration of capital expenditures, the purchase of additional emissions allowances or offsets, the acquisition or development of additional energy supply from renewable resources, and the closure of certain generating facilities. To the extent our regulated fossil-fuel generating plants are included in rate base we will attempt to recover costs associated with complying with emission standards or other requirements. We will also attempt to recover the emission compliance costs of our non-regulated fossil-fuel generating plants from utility and other purchasers of the power generated by those non-regulated power plants. Any unrecovered costs could have a material impact on our results of operations and financial condition. In addition, future changes in environmental regulations governing air emissions could render some of our power generating units more expensive or uneconomical to operate and maintain.

62

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

There were no unregistered securities sold during the six months ended June 30, 2014.

ITEM 4. Mine Safety Disclosures

Information concerning mine safety violations or other regulatory matters required by Sections 1503(a) of Dodd-Frank is included in Exhibit 95 of this Quarterly Report on Form 10-Q.

ITEM 5. Other Information

None.

ITEM 6. Exhibits

Exhibit Number	Description
Exhibit 3.1*	Restated Articles of Incorporation of the Registrant (filed as Exhibit 3 to the Registrant’s Form 10-K for 2004).
Exhibit 3.2*	Amended and Restated Bylaws of the Registrant dated January 28, 2010 (filed as Exhibit 3 to the Registrant’s Form 8-K filed on February 3, 2010).
Exhibit 4.1*	Indenture dated as of May 21, 2003 between the Registrant and Wells Fargo Bank, National Association (as successor to LaSalle Bank National Association), as Trustee (filed as Exhibit 4.1 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003). First Supplemental Indenture dated as of May 21, 2003 (filed as Exhibit 4.2 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003). Second Supplemental Indenture dated as of May 14, 2009 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on May 14, 2009). Third Supplemental Indenture dated as of July 16, 2010 (filed as Exhibit 4 to Registrant’s Form 8-K filed on July 15, 2010). Fourth Supplemental Indenture dated as of November 19, 2013 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on November 18, 2013).
Exhibit 4.2*	Restated and Amended Indenture of Mortgage and Deed of Trust of Black Hills Corporation (now called Black Hills Power, Inc.) dated as of September 1, 1999 (filed as Exhibit 4.19 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)). First Supplemental Indenture, dated as of August 13, 2002, between Black Hills Power, Inc. and The Bank of New York Mellon (as successor to JPMorgan Chase Bank), as Trustee (filed as Exhibit 4.20 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S‑3 (No. 333‑150669)). Second Supplemental Indenture, dated as of October 27, 2009, between Black Hills Power, Inc. and The Bank of New York Mellon (filed as Exhibit 4.21 to the Registrant’s Post-Effective Amendment No. 2 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)).
Exhibit 4.3*	Form of Stock Certificate for Common Stock, Par Value $1.00 Per Share (filed as Exhibit 4.2 to the Registrant’s Form 10-K for 2000).
Exhibit 10.1*	Credit Agreement dated May 29, 2014 among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto (filed as Exhibit 10 to the Registrant’s Form 8-K filed on May 30, 2014.)
Exhibit 10.2*	Bond Purchase Agreement dated as of June 30, 2014 by and among Black Hills Power, Inc., New York Life Insurance Company, New York Life Insurance and Annuity Corporation, Teachers Insurance and Annuity Association of America, John Hancock Life Insurance Company (U.S.A.), John Hancock Life & Health Insurance Company, John Hancock Life Insurance Company of New York and United of Omaha Life Insurance Company (filed as Exhibit 10.1 to the Registrant’s Form 8-K filed on July 2, 2014.)

63

Exhibit 10.3*	Bond Purchase Agreement dated as of June 30, 2014 by and among Cheyenne Light, Fuel and Power Company, New York Life Insurance Company, New York Life Insurance and Annuity Corporation, Teachers Insurance and Annuity Association of America, John Hancock Life Insurance Company (U.S.A.), John Hancock Life & Health Insurance Company, John Hancock Life Insurance Company of New York, Mutual of Omaha Insurance Company, United of Omaha Life Insurance Company and American Equity Investment Life Insurance Company (filed as Exhibit 10.2 to the Registrant’s Form 8-K filed on July 2, 2014.)
Exhibit 31.1	Certification of Chief Executive Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
Exhibit 31.2	Certification of Chief Financial Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
Exhibit 32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.
Exhibit 32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.
Exhibit 95	Mine Safety and Health Administration Safety Data.
Exhibit 101	Financial Statements for XBRL Format.

__________

* Previously filed as part of the filing indicated and incorporated by reference herein.

64

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

BLACK HILLS CORPORATION

		/s/ David R. Emery
		David R. Emery, Chairman, President and
		Chief Executive Officer
		/s/ Anthony S. Cleberg
		Anthony S. Cleberg, Executive Vice President and
		Chief Financial Officer
Dated:	August 6, 2014

65

INDEX TO EXHIBITS

Exhibit Number	Description
Exhibit 3.1*	Restated Articles of Incorporation of the Registrant (filed as Exhibit 3 to the Registrant’s Form 10-K for 2004).
Exhibit 3.2*	Amended and Restated Bylaws of the Registrant dated January 28, 2010 (filed as Exhibit 3 to the Registrant’s Form 8-K filed on February 3, 2010).
Exhibit 4.1*	Indenture dated as of May 21, 2003 between the Registrant and Wells Fargo Bank, National Association (as successor to LaSalle Bank National Association), as Trustee (filed as Exhibit 4.1 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003). First Supplemental Indenture dated as of May 21, 2003 (filed as Exhibit 4.2 to the Registrant’s Form 10-Q for the quarterly period ended June 30, 2003). Second Supplemental Indenture dated as of May 14, 2009 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on May 14, 2009). Third Supplemental Indenture dated as of July 16, 2010 (filed as Exhibit 4 to the Registrant’s Form 8-K filed on July 15, 2010). Fourth Supplemental Indenture dated as of November 19, 2013 (filed as Exhibit 4 to the Registrants’ Form 8-K filed on November 18, 2013).
Exhibit 4.2*	Restated and Amended Indenture of Mortgage and Deed of Trust of Black Hills Corporation (now called Black Hills Power, Inc.) dated as of September 1, 1999 (filed as Exhibit 4.19 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)). First Supplemental Indenture, dated as of August 13, 2002, between Black Hills Power, Inc. and The Bank of New York Mellon (as successor to JPMorgan Chase Bank), as Trustee (filed as Exhibit 4.20 to the Registrant’s Post-Effective Amendment No. 1 to the Registrant’s Registration Statement on Form S‑3 (No. 333‑150669)). Second Supplemental Indenture, dated as of October 27, 2009, between Black Hills Power, Inc. and The Bank of New York Mellon (filed as Exhibit 4.21 to the Registrant’s Post-Effective Amendment No. 2 to the Registrant’s Registration Statement on Form S-3 (No. 333-150669)).
Exhibit 4.3*	Form of Stock Certificate for Common Stock, Par Value $1.00 Per Share (filed as Exhibit 4.2 to the Registrant’s Form 10-K for 2000).
Exhibit 10.1*	Credit Agreement dated May 29, 2014 among Black Hills Corporation, as Borrower, U.S. Bank, National Association, in its capacity as administrative agent for the Banks under the Credit Agreement, and as a Bank, and the other Banks party thereto (filed as Exhibit 10 to the Registrant’s Form 8-K filed on May 30, 2014.)
Exhibit 10.2*	Bond Purchase Agreement dated as of June 30, 2014 by and among Black Hills Power, Inc., New York Life Insurance Company, New York Life Insurance and Annuity Corporation, Teachers Insurance and Annuity Association of America, John Hancock Life Insurance Company (U.S.A.), John Hancock Life & Health Insurance Company, John Hancock Life Insurance Company of New York and United of Omaha Life Insurance Company (filed as Exhibit 10.1 to the Registrant’s Form 8-K filed on July 2, 2014.)
Exhibit 10.3*	Bond Purchase Agreement dated as of June 30, 2014 by and among Cheyenne Light, Fuel and Power Company, New York Life Insurance Company, New York Life Insurance and Annuity Corporation, Teachers Insurance and Annuity Association of America, John Hancock Life Insurance Company (U.S.A.), John Hancock Life & Health Insurance Company, John Hancock Life Insurance Company of New York, Mutual of Omaha Insurance Company, United of Omaha Life Insurance Company and American Equity Investment Life Insurance Company (filed as Exhibit 10.2 to the Registrant’s Form 8-K filed on July 2, 2014.)
Exhibit 31.1	Certification of Chief Executive Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
Exhibit 31.2	Certification of Chief Financial Officer pursuant to Rule 13a - 14(a) of the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes - Oxley Act of 2002.
Exhibit 32.1	Certification of Chief Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.

66

Exhibit 32.2	Certification of Chief Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes - Oxley Act of 2002.
Exhibit 95	Mine Safety and Health Administration Safety Data.
Exhibit 101	Financial Statements for XBRL Format.

__________

* Previously filed as part of the filing indicated and incorporated by reference herein.

67

EX-31.1

Exhibit 31.1

CERTIFICATION

I, David R. Emery, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Black Hills Corporation;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;
	c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 6, 2014
		/S/ DAVID R. EMERY
		David R. Emery
		Chairman, President and
		Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION

I, Anthony S. Cleberg, certify that:

1.	I have reviewed this Quarterly Report on Form 10-Q of Black Hills Corporation;
2.	Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.	Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.	The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
	a)	Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
	b)	Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, 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;
	c)	Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
	d)	Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.
5.	The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of registrant’s board of directors (or persons performing the equivalent functions):
	a)	All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
	b)	Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.

Date:	August 6, 2014
		/S/ ANTHONY S. CLEBERG
		Anthony S. Cleberg
		Executive Vice President and
		Chief Financial Officer

EX-32.1

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Black Hills Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, David R. Emery, Chairman, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Report fully complies with the requirements of Section 13 (a) or 15 (d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	August 6, 2014
		/S/ DAVID R. EMERY
		David R. Emery
		Chairman, President and
		Chief Executive Officer

EX-32.2

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Black Hills Corporation (the “Company”) on Form 10-Q for the period ended June 30, 2014 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Anthony S. Cleberg, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that:

(1)	The Report fully complies with the requirements of Section 13 (a) or 15 (d) of the Securities Exchange Act of 1934; and
(2)	The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date:	August 6, 2014
		/S/ ANTHONY S. CLEBERG
		Anthony S. Cleberg
		Executive Vice President and
		Chief Financial Officer

EX-95

Exhibit 95

Information concerning mine safety violations or other regulatory matters required by Sections 1503(a) of Dodd-Frank is included below.

Mine Safety and Health Administration Safety Data

Safety is a core value at Black Hills Corporation and at each of its subsidiary operations. We have in place a comprehensive safety program that includes extensive health and safety training for all employees, site inspections, emergency response preparedness, crisis communications training, incident investigation, regulatory compliance training and process auditing, as well as an open dialogue between all levels of employees. The goals of our processes are to eliminate exposure to hazards in the workplace, ensure that we comply with all mine safety regulations, and support regulatory and industry efforts to improve the health and safety of our employees along with the industry as a whole.

Under the recently enacted Dodd-Frank Act, each operator of a coal or other mine is required to include certain mine safety results in its periodic reports filed with the SEC. Our mining operation, consisting of Wyodak Coal Mine, is subject to regulation by the federal Mine Safety and Health Administration ("MSHA") under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). Below we present the following information regarding certain mining safety and health matters for the three month period ended June 30, 2014. In evaluating this information, consideration should be given to factors such as: (i) the number of citations and orders will vary depending on the size of the coal mine, (ii) the number of citations issued will vary from inspector to inspector and mine to mine, and (iii) citations and orders can be contested and appealed, and in that process, are often reduced in severity and amount, and are sometimes dismissed. The information presented includes:

• Total number of violations of mandatory health and safety standards that could significantly and substantially contribute to the cause and effect of a coal or other mine safety or health hazard under section 104 of the Mine Act for which we have received a citation from MSHA;

• Total number of orders issued under section 104(b) of the Mine Act;

• Total number of citations and orders for unwarrantable failure of the mine operator to comply with mandatory health and safety standards under section 104(d) of the Mine Act;

• Total number of imminent danger orders issued under section 107(a) of the Mine Act; and

• Total dollar value of proposed assessments from MSHA under the Mine Act.

The table below sets forth the total number of citations and/or orders issued by MSHA to WRDC under the indicated provisions of the Mine Act, together with the total dollar value of proposed MSHA assessments received during the three months ended June 30, 2014 and legal actions pending before the Federal Mine Safety and Health Review Commission, together with the Administrative Law Judges thereof, for WRDC, our only mining complex. All citations were abated within 24 hours of issue.

Mine/ MSHA

Mine Act Section 104 S&S Citations issued during three months ended

Mine Act Section 104(b)

Mine Act Section 104(d) Citations and

Mine Act Section 110(b)(2)

Mine Act Section 107(a) Imminent Danger

Total Dollar Value of Proposed MSHA

Total Number of Mining Related

Received Notice of Potential to Have Pattern Under

Legal Actions Pending as of Last Day of

Legal Actions Initiated During

Legal Actions Resolved During

Identification Number

June 30, 2014

Orders (#)

Orders (#)

Violations (#)

Orders (#)

Assessments

Fatalities (#)

Section 104(e) (yes/no)

Period (#) (a)

Period (#)

Period (#)

Wyodak Coal Mine - 4800083

—

—

—

—

—

$

1,211

—

No

—

—

—

________________________

(a) The types of proceedings by class: (1) contests of citations and orders - none; (2) contests of proposed penalties - none; (3) complaints for compensation - none; (4) complaints of discharge, discrimination or interference under Section 105 of the Mine Act - none; (5) applications for temporary relief - none; and (6) appeals of judges' decisions or orders to the FMSHRC - none.

XML

Materials, Supplies and Fuel (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Inventory, Net [Abstract]
Materials and supplies	$ 51,925	$ 50,196	$ 51,334
Fuel - Electric Utilities	7,679	6,213	6,817
Natural gas in storage held for distribution	21,560	32,069	15,617
Total materials, supplies and fuel	$ 81,164	$ 88,478	$ 73,768

XML

Commitments and Contingencies - Purchase Sales Agreement (Details) (Power Generation [Member], CTII Natural Gas Fired Generating Unit [Member], USD $) In Millions, unless otherwise specified	0 Months Ended
	May 06, 2013
Power Generation [Member] | CTII Natural Gas Fired Generating Unit [Member]
Future Consideration from Sale of Assets	$ 22

XML

Fair Value of Financial Instruments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	$ 14,697		$ 7,841		$ 30,633
Restricted cash and equivalents	2		2		7,279
Notes payable	132,700		82,500		100,000
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and cash equivalents	14,697		7,841		30,633
Restricted cash and equivalents	2		2		7,279
Notes payable	132,700		82,500		100,000
Long-term debt, including current maturities	1,396,950		1,396,948		1,214,066
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and Cash Equivalents, Fair Value	14,697	[1]	7,841	[1]	30,633	[1]
Restricted Cash and equivalents, Fair Value	2	[1]	2	[1]	7,279	[1]
Notes payable, Fair Value	132,700	[1]	82,500	[1]	100,000	[1]
Long-term debt, including current maturities, Fair Value	$ 1,578,756	[2]	$ 1,491,422	[2]	$ 1,323,543	[2]

[1] Carrying value approximates fair value due to either the short-term length of maturity or variable interest rates that approximate prevailing market rates, and therefore is classified in Level 1 in the fair value hierarchy.

[2] Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy.

XML

Commitments and Contingencies - Reimbursement Agreement (Details) (Surety Bond [Member], Electric Utilities [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Industrial Development Revenue Bonds Due 2027 [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 10,000
Industrial Development Revenue Bonds Due 2021 [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 7,000

XML

Fair Value Measurements - Fair Value Hierarchy (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Fair Value, Transfers Between Level 1 and Level 2, Description and Policy [Abstract]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0	$ 0	$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0	0	0
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount	0	0	0
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0	0
Liabilities, Fair Value Disclosure	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Crude Oil [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Crude Oil [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Natural Gas [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Natural Gas [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Natural Gas, Distribution [Member] | Utilities Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	4,942	3,975	4,414
Liabilities, Fair Value Disclosure	19,770	19,948	96,765
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	7,731	9,088	87,208
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Crude Oil [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	45
Derivative Liabilities	0	0	181
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Crude Oil [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	130	1,109
Derivative Liabilities	4,020	1,229	350
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Natural Gas [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Natural Gas [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	600	815	1,882
Derivative Liabilities	2,030	531	445
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Natural Gas, Distribution [Member] | Utilities Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	4,342	3,030	1,378
Derivative Liabilities	5,989	9,100	8,581
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	0	0	0
Liabilities, Fair Value Disclosure	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Crude Oil [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Crude Oil [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Natural Gas [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Natural Gas [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Natural Gas, Distribution [Member] | Utilities Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Netting [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	(3,205)	(3,258)	(3,511)
Liabilities, Fair Value Disclosure	(12,039)	(10,860)	(15,111)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	0	0	(5,960)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Crude Oil [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	(6)
Derivative Liabilities	0	0	(98)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Crude Oil [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	(75)	(538)
Derivative Liabilities	(4,020)	(1,229)	(303)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Natural Gas [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Natural Gas [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	(600)	(815)	(1,589)
Derivative Liabilities	(2,030)	(531)	(169)
Fair Value, Measurements, Recurring [Member] | Netting [Member] | Natural Gas, Distribution [Member] | Utilities Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	(2,605)	(2,368)	(1,378)
Derivative Liabilities	(5,989)	(9,100)	(8,581)
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	1,737	717	903
Liabilities, Fair Value Disclosure	7,731	9,088	81,654
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liabilities	7,731	9,088	81,248
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Crude Oil [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	39
Derivative Liabilities	0	0	83
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Crude Oil [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	55	571
Derivative Liabilities	0	0	47
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Natural Gas [Member] | Commodity Option [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	0
Derivative Liabilities	0	0	0
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Natural Gas [Member] | Basis Swap [Member] | Oil and Gas [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	0	0	293
Derivative Liabilities	0	0	276
Fair Value, Measurements, Recurring [Member] | Estimate of Fair Value Measurement [Member] | Natural Gas, Distribution [Member] | Utilities Group [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	1,737	662	0
Derivative Liabilities	$ 0	$ 0	$ 0

XML

Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2014

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Schedule of Net Benefit Costs [Table Text Block]

The components of net periodic benefit cost for the Defined Benefit Pension Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	1,362		$	1,608		$	2,724		$	3,216
Interest cost	3,963			3,825			7,926			7,650
Expected return on plan assets	(4,516		)	(4,654		)	(9,032		)	(9,308		)
Prior service cost	16			16			32			32
Net loss (gain)	1,201			3,062			2,403			6,124
Net periodic benefit cost	$	2,026		$	3,857		$	4,053		$	7,714

Non-pension Defined Benefit Postretirement Healthcare Plans

The components of net periodic benefit cost for the Non-pension Defined Benefit Postretirement Healthcare Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	425		$	419		$	850		$	838
Interest cost	480			417			959			834
Expected return on plan assets	(21		)	(20		)	(42		)	(40		)
Prior service cost (benefit)	(107		)	(125		)	(214		)	(250		)
Net loss (gain)	40			121			80			242
Net periodic benefit cost	$	817		$	812		$	1,633		$	1,624

Supplemental Non-qualified Defined Benefit and Defined Contribution Plans

The components of net periodic benefit cost for the Supplemental Non-qualified Defined Benefit and Defined Contribution Plans were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Service cost	$	374	$	348	$	749	$	696
Interest cost	362		332		724		664
Prior service cost	1		1		1		2
Net loss (gain)	124		198		249		396
Net periodic benefit cost	$	861	$	879	$	1,723	$	1,758

Schedule of Defined Benefit Plans Contributions [Table Text Block]

Contributions and anticipated contributions are as follows (in thousands):

	Contributions Made		Contributions Made		Additional
	Three Months Ended June 30, 2014		Six Months Ended June 30, 2014		Contributions Anticipated for 2014		Contributions Anticipated for 2015
Defined Benefit Pension Plans	$	—	$	—	$	—	$	2,806
Non-pension Defined Benefit Postretirement Healthcare Plans	$	956	$	1,912	$	1,912	$	3,822
Supplemental Non-qualified Defined Benefit and Defined Contribution Plans	$	373	$	746	$	746	$	1,494

XML

Commitments and Contingencies - Oil Creek Fire (Details) (Oil Creek Fire [Member], Loss from Catastrophes [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Minimum [Member]
Loss Contingencies [Line Items]
Insurance Coverage Deductible Per Occurrence	$ 1.0
Maximum [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 50

XML

Materials, Supplies and Fuel (Tables)

6 Months Ended

Jun. 30, 2014

Inventory, Net [Abstract]

Materials, Supplies and Fuel [Table Text Block]

The following amounts by major classification are included in Materials, supplies and fuel in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014		December 31, 2013		June 30, 2013
Materials and supplies	$	51,925	$	50,196	$	51,334
Fuel - Electric Utilities	7,679		6,213		6,817
Natural gas in storage held for distribution	21,560		32,069		15,617
Total materials, supplies and fuel	$	81,164	$	88,478	$	73,768

XML

Accumulated Other Comprehensive Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Jun. 30, 2013	Mar. 31, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (19,441)	$ (18,589)	$ (30,781)	$ (36,224)	$ (19,441)	$ (30,781)	$ (17,422)	$ (35,488)
Other Comprehensive Income (Loss), Net of Tax	(852)	(1,167)	5,443	(736)	(2,019)	4,707
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(9,167)	(8,611)	(11,827)	(16,906)	(9,167)	(11,827)	(7,133)	(15,713)
Other Comprehensive Income (Loss), Net of Tax	(556)	(1,478)	5,079	(1,193)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax	(10,274)	(9,978)	(18,954)	(19,318)	(10,274)	(18,954)	(10,289)	(19,775)
Other Comprehensive Income (Loss), Net of Tax	$ (296)	$ 311	$ 364	$ 457

XML

Notes Payable (Details) (USD $)	6 Months Ended
	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Line of Credit Facility [Line Items]
Revolving Credit Facility - Balance Outstanding	$ 132,700,000	$ 82,500,000	$ 100,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Revolving Credit Facility - Balance Outstanding	132,700,000	82,500,000	100,000,000
Revolving Credit Facility - Letters of Credit Outstanding	20,272,000	22,100,000	43,157,000
Revolving Credit Facility - Current Borrowing Capacity	500,000,000
Revolving Credit Facility - Maximum Borrowing Capacity	$ 750,000,000
Revolving Credit Facility - Unused Capacity, Commitment Fee Percentage	0.175%
Revolving Credit Facility - Commitment Fee Percentage Decrease	0.025%
Debt Disclosure [Abstract]
Recourse Leverage Ratio	54.00%
Recourse Leverage Ratio, Maximum Allowed, Covenant	65.00%
Revolving Credit Facility [Member] | Base Rate [Member]
Line of Credit Facility [Line Items]
Revolving Credit Facility - Interest Rate at Period End	0.125%
Debt Instrument Interest Rate Increase Decrease Parenthetical Disclosures [Abstract]
Revolving Credit Facility - Interest Rate Decrease	0.25%
Revolving Credit Facility [Member] | Eurodollar [Member]
Line of Credit Facility [Line Items]
Revolving Credit Facility - Interest Rate at Period End	1.125%
Debt Instrument Interest Rate Increase Decrease Parenthetical Disclosures [Abstract]
Revolving Credit Facility - Interest Rate Decrease	0.25%
Revolving Credit Facility [Member] | Letter of Credit [Member]
Line of Credit Facility [Line Items]
Revolving Credit Facility - Interest Rate at Period End	1.125%
Debt Instrument Interest Rate Increase Decrease Parenthetical Disclosures [Abstract]
Revolving Credit Facility - Interest Rate Decrease	0.25%

XML

Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	$ (1,662)	$ (1,237)	$ (1,723)
Accounts receivable, net	135,145	177,573	132,726
Corporate[Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	0	0	0
Accounts receivable, net	2,012	604	1,935
Electric Utilities [Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	(622)	(666)	(630)
Accounts receivable, net	69,427	75,594	68,910
Gas Utilities [Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	(1,027)	(558)	(1,074)
Accounts receivable, net	51,342	89,799	50,867
Power Generation [Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	0	0	0
Accounts receivable, net	1,388	1,722	157
Coal Mining [Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	0	0	0
Accounts receivable, net	1,866	1,711	2,503
Oil and Gas [Member]
Accounts Receivable [Line Items]
Allowance for Doubtful Accounts Receivable	(13)	(13)	(19)
Accounts receivable, net	9,110	8,143	8,354
Billed Revenues [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	105,826	113,792	96,967
Billed Revenues [Member] | Corporate[Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	2,012	604	1,935
Billed Revenues [Member] | Electric Utilities [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	48,333	52,437	45,250
Billed Revenues [Member] | Gas Utilities [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	43,104	49,162	38,749
Billed Revenues [Member] | Power Generation [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	1,388	1,722	157
Billed Revenues [Member] | Coal Mining [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	1,866	1,711	2,503
Billed Revenues [Member] | Oil and Gas [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	9,123	8,156	8,373
Unbilled Revenues [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	30,981	65,018	37,482
Unbilled Revenues [Member] | Corporate[Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	0	0	0
Unbilled Revenues [Member] | Electric Utilities [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	21,716	23,823	24,290
Unbilled Revenues [Member] | Gas Utilities [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	9,265	41,195	13,192
Unbilled Revenues [Member] | Power Generation [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	0	0	0
Unbilled Revenues [Member] | Coal Mining [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	0	0	0
Unbilled Revenues [Member] | Oil and Gas [Member]
Accounts Receivable [Line Items]
Accounts Receivable, Trade	$ 0	$ 0	$ 0

XML

Employee Benefit Plans (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Pension Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	$ 1,362	$ 1,608	$ 2,724	$ 3,216
Interest cost	3,963	3,825	7,926	7,650
Expected return on plan assets	(4,516)	(4,654)	(9,032)	(9,308)
Prior service cost (benefit)	16	16	32	32
Net loss (gain)	1,201	3,062	2,403	6,124
Net periodic benefit cost	2,026	3,857	4,053	7,714
Pension and Other Postretirement Benefit Contributions [Abstract]
Contributions by Employer	0		0
Estimated Future Employer Contributions in Current Fiscal Year			0
Estimated Future Employer Contributions in Next Fiscal Year			2,806
Non-pension Defined Benefit Postretirement Healthcare Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	425	419	850	838
Interest cost	480	417	959	834
Expected return on plan assets	(21)	(20)	(42)	(40)
Prior service cost (benefit)	(107)	(125)	(214)	(250)
Net loss (gain)	40	121	80	242
Net periodic benefit cost	817	812	1,633	1,624
Pension and Other Postretirement Benefit Contributions [Abstract]
Contributions by Employer	956		1,912
Estimated Future Employer Contributions in Current Fiscal Year			1,912
Estimated Future Employer Contributions in Next Fiscal Year			3,822
Supplemental Non-qualified Defined Benefit and Defined Contribution Plans
Defined Benefit Plan, Net Periodic Benefit Cost [Abstract]
Service cost	374	348	749	696
Interest cost	362	332	724	664
Prior service cost (benefit)	1	1	1	2
Net loss (gain)	124	198	249	396
Net periodic benefit cost	861	879	1,723	1,758
Pension and Other Postretirement Benefit Contributions [Abstract]
Contributions by Employer	373		746
Estimated Future Employer Contributions in Current Fiscal Year			746
Estimated Future Employer Contributions in Next Fiscal Year			$ 1,494

XML

Fair Value Measurements - Balance Sheet Location (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	$ 600	$ 946	$ 2,876
Derivative Liability, Fair Value, Net	13,781	10,848	20,279
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Net	1,737	662	160
Derivative Liability, Fair Value, Net	3,384	6,732	75,108
Commodity Contract [Member] | Designated as Hedging Instrument [Member] | Derivative Assets, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	262	248	1,225
Derivative Asset, Fair Value, Gross Liability	0	0	0
Commodity Contract [Member] | Designated as Hedging Instrument [Member] | Derivative Assets, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	338	698	1,651
Derivative Asset, Fair Value, Gross Liability	0	0	0
Commodity Contract [Member] | Designated as Hedging Instrument [Member] | Derivative Liabilities, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	3,702	1,541	889
Commodity Contract [Member] | Designated as Hedging Instrument [Member] | Derivative Liabilities, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	2,348	219	41
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Derivative Assets, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	1,737	662	160
Derivative Asset, Fair Value, Gross Liability	0	0	0
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Derivative Assets, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset	0	0	0
Derivative Asset, Fair Value, Gross Liability	0	0	0
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Derivative Liabilities, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	0	0	1,884
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Derivative Liabilities, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	3,384	6,732	5,365
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Derivative Liabilities, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	3,480	3,474	6,965
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member] | Derivative Liabilities, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset	0	0	0
Derivative Liability, Fair Value, Gross Liability	4,251	5,614	12,384
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Derivative Liabilities, Current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset			0
Derivative Liability, Fair Value, Gross Liability			67,859
Interest Rate Swap [Member] | Not Designated as Hedging Instrument [Member] | Derivative Liabilities, Non-current [Member]
Derivatives, Fair Value [Line Items]
Derivative Liability, Fair Value, Gross Asset			0
Derivative Liability, Fair Value, Gross Liability			$ 0

XML

Accounts Receivable

6 Months Ended

Jun. 30, 2014

Receivables [Abstract]

Accounts Receivable [Text Block]

ACCOUNTS RECEIVABLE

Following is a summary of Accounts receivable, net included in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2014	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	48,333	$	21,716	$	(622	)	$	69,427
Gas Utilities	43,104		9,265		(1,027		)	51,342
Power Generation	1,388		—		—			1,388
Coal Mining	1,866		—		—			1,866
Oil and Gas	9,123		—		(13		)	9,110
Corporate	2,012		—		—			2,012
Total	$	105,826	$	30,981	$	(1,662	)	$	135,145

	Accounts		Unbilled		Less Allowance for			Accounts
December 31, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	52,437	$	23,823	$	(666	)	$	75,594
Gas Utilities	49,162		41,195		(558		)	89,799
Power Generation	1,722		—		—			1,722
Coal Mining	1,711		—		—			1,711
Oil and Gas	8,156		—		(13		)	8,143
Corporate	604		—		—			604
Total	$	113,792	$	65,018	$	(1,237	)	$	177,573

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	45,250	$	24,290	$	(630	)	$	68,910
Gas Utilities	38,749		13,192		(1,074		)	50,867
Power Generation	157		—		—			157
Coal Mining	2,503		—		—			2,503
Oil and Gas	8,373		—		(19		)	8,354
Corporate	1,935		—		—			1,935
Total	$	96,967	$	37,482	$	(1,723	)	$	132,726

XML

Current Maturities of Long-Term Debt (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 275,000	$ 0	$ 255,507
Black Hills Corporation [Member] | Corporate Term Loan Due June 2015
Debt Instrument [Line Items]
Current maturities of long-term debt	$ 275,000

XML

Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Schedule of Fair Value Hierarchy, Measured on Recurring Basis [Table Text Block]

The following tables set forth by level within the fair value hierarchy our gross assets and gross liabilities and related offsetting as permitted by GAAP that were accounted for at fair value on a recurring basis for derivative instruments. A discussion of fair value of financial instruments is included in Note 10:

	As of June 30, 2014
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		—		—		—			—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		600		—		(600		)	—
Commodity derivatives — Utilities	—		4,342		—		(2,605		)	1,737
Total	$	—	$	4,942	$	—	$	(3,205	)	$	1,737
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		4,020		—		(4,020		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		2,030		—		(2,030		)	—
Commodity derivatives — Utilities	—		5,989		—		(5,989		)	—
Interest rate swaps	—		7,731		—		—			7,731
Total	$	—	$	19,770	$	—	$	(12,039	)	$	7,731

	As of December 31, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		130		—		(75		)	55
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		815		—		(815		)	—
Commodity derivatives —Utilities	—		3,030		—		(2,368		)	662
Total	$	—	$	3,975	$	—	$	(3,258	)	$	717
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		1,229		—		(1,229		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		531		—		(531		)	—
Commodity derivatives — Utilities	—		9,100		—		(9,100		)	—
Interest rate swaps	—		9,088		—		—			9,088
Total	$	—	$	19,948	$	—	$	(10,860	)	$	9,088

	As of June 30, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	45	$	—	$	(6	)	$	39
Basis Swaps -- Oil	—		1,109		—		(538		)	571
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		1,882		—		(1,589		)	293
Commodity derivatives — Utilities	—		1,378		—		(1,378		)	—
Total	$	—	$	4,414	$	—	$	(3,511	)	$	903
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	181	$	—	$	(98	)	$	83
Basis Swaps -- Oil	—		350		—		(303		)	47
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		445		—		(169		)	276
Commodity derivatives — Utilities	—		8,581		—		(8,581		)	—
Interest rate swaps	—		87,208		—		(5,960		)	81,248
Total	$	—	$	96,765	$	—	$	(15,111	)	$	81,654

Schedule of Derivative Instruments Balance Sheet Location [Table Text Block]

The following tables present the fair value and balance sheet classification of our derivative instruments (in thousands):

As of June 30, 2014
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	262	$	—
Commodity derivatives	Derivative assets — non-current	338		—
Commodity derivatives	Derivative liabilities — current	—		3,702
Commodity derivatives	Derivative liabilities — non-current	—		2,348
Interest rate swaps	Derivative liabilities — current	—		3,480
Interest rate swaps	Derivative liabilities — non-current	—		4,251
Total derivatives designated as hedges		$	600	$	13,781
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,737	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		3,384
Total derivatives not designated as hedges		$	1,737	$	3,384

As of December 31, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	248	$	—
Commodity derivatives	Derivative assets — non-current	698		—
Commodity derivatives	Derivative liabilities — current	—		1,541
Commodity derivatives	Derivative liabilities — non-current	—		219
Interest rate swaps	Derivative liabilities — current	—		3,474
Interest rate swaps	Derivative liabilities — non-current	—		5,614
Total derivatives designated as hedges		$	946	$	10,848
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	662	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		6,732
Total derivatives not designated as hedges		$	662	$	6,732

As of June 30, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,225	$	—
Commodity derivatives	Derivative assets — non-current	1,651		—
Commodity derivatives	Derivative liabilities — current	—		889
Commodity derivatives	Derivative liabilities — non-current	—		41
Interest rate swaps	Derivative liabilities — current	—		6,965
Interest rate swaps	Derivative liabilities — non-current	—		12,384
Total derivatives designated as hedges		$	2,876	$	20,279
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	160	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		1,884
Commodity derivatives	Derivative liabilities — non-current	—		5,365
Interest rate swaps	Derivative liabilities — current	—		67,859
Interest rate swaps	Derivative liabilities — non-current	—		—
Total derivatives not designated as hedges		$	160	$	75,108

XML

Risk Management Activities (Tables)

6 Months Ended

Jun. 30, 2014

Derivative [Line Items]

Schedule of Derivative Instruments [Table Text Block]

The contract or notional amounts, terms of our interest rate swaps and the interest rate swaps balances reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014			December 31, 2013			June 30, 2013
	Interest Rate Swaps (a)			Interest Rate Swaps (a)			Interest Rate Swaps (b)			De-designated Interest Rate Swaps (c)
Notional	$	75,000		$	75,000		$	150,000		$	250,000
Weighted average fixed interest rate	4.97		%	4.97		%	5.04		%	5.67		%
Maximum terms in years	2.5			3.0			3.5			0.5
Derivative liabilities, current	$	3,480		$	3,474		$	6,965		$	61,899
Derivative liabilities, non-current	$	4,251		$	5,614		$	12,384		$	—

__________

(a) These swaps are designated to borrowings on our Revolving Credit Facility, and are priced using three-month LIBOR, matching the floating portion of the related debt.

(b) At June 30, 2013, $75 million of these interest rate swaps were designated to borrowings on our Revolving Credit Facility and $75 million were designated to borrowings on our project financing debt at Black Hills Wyoming. These swaps are priced using three-month LIBOR, matching the floating portion of the related debt. The portion of the swaps that were designated to Black Hills Wyoming were settled during the fourth quarter of 2013 upon repayment of the Black Hills Wyoming project financing.

(c) These swaps were settled during the fourth quarter of 2013.

Derivative Instruments, Gain (Loss) [Table Text Block]

The impacts of cash flow hedges on our Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(337	)	Interest expense	$	(926	)		$	—
Commodity derivatives	(2,737		)	Revenue	(1,251		)		—
Total	$	(3,074	)		$	(2,177	)		$	—

Three Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,067	Interest expense	$	(1,820	)		$	—
Commodity derivatives	4,985		Revenue	(28		)		—
Total	$	6,052		$	(1,848	)		$	—

Six Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(429	)	Interest expense	$	(1,820	)		$	—
Commodity derivatives	(6,209		)	Revenue	(1,562		)		—
Total	$	(6,638	)		$	(3,382	)		$	—

Six Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,048	Interest expense	$	(3,616	)		$	—
Commodity derivatives	2,226		Revenue	1,064				—
Total	$	3,274		$	(2,552	)		$	—

Oil and Gas [Member]

Derivative [Line Items]

Schedule of Derivative Instruments [Table Text Block]

The contract or notional amounts, terms of our commodity derivatives, and the derivative balances for our Oil and Gas segment reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps
Notional (a)	424,500		9,265,000		412,500		7,082,500		520,500		10,712,500
Maximum terms in months (b)	1		1		3		1		6		1
Derivative assets, current	$	—	$	—	$	55	$	—	$	610	$	293
Derivative assets, non-current	$	—	$	—	$	—	$	—	$	—	$	—
Derivative liabilities, current	$	—	$	—	$	—	$	—	$	130	$	276
Derivative liabilities, non-current	$	—	$	—	$	—	$	—	$	—	$	—

__________

(a) Crude oil in Bbls, natural gas in MMBtus.

(b) Refers to the term of the derivative instrument. Assets and liabilities are classified as current/non-current based on the term of the hedged transaction and the corresponding settlement of the derivative instrument.

Utilities Group [Member]

Derivative [Line Items]

Schedule of Derivative Instruments [Table Text Block]

We had the following derivative balances related to the hedges in our Utilities reflected in our Condensed Consolidated Balance Sheets as of (in thousands):

	June 30, 2014		December 31, 2013		June 30, 2013
Derivative assets, current	$	1,737	$	662	$	—
Derivative assets, non-current	$	—	$	—	$	—
Derivative liabilities, non-current	$	—	$	—	$	—
Net unrealized (gain) loss included in Regulatory assets or Regulatory liabilities	$	3,561	$	7,567	$	8,450

Contract or Notional Amounts and Terms of Commodity Derivatives[Table Text Block]

The contract or notional amounts and terms of the natural gas derivative commodity instruments held at our Utilities were as follows, as of:

	June 30, 2014		December 31, 2013		June 30, 2013
	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)
Natural gas futures purchased	16,240,000	78	17,930,000	84	13,330,000	77
Natural gas options purchased	3,980,000	9	3,890,000	8	2,850,000	5
Natural gas basis swaps purchased	13,415,000	66	14,785,000	60	10,650,000	66

XML

Commitments and Contingencies - Other Commitments (Details) (Cheyenne Prairie [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Long-term Purchase Commitment [Line Items]
Long-term Purchase Commitment, Amount	$ 222
Equipment [Member]
Long-term Purchase Commitment [Line Items]
Long Term Purchase Commitment, Percentage Committed	100.00%
Construction Contracts [Member]
Long-term Purchase Commitment [Line Items]
Long Term Purchase Commitment, Percentage Committed	98.00%

XML

Risk Management Activities (Details) (USD $)	6 Months Ended				12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013		Dec. 31, 2013
Derivative [Line Items]
Credit Exposure, Non-Investment Grade Company	$ 500,000
Derivative assets, current	1,737,000		903,000		717,000
Derivative liabilities, current	3,480,000		69,270,000		3,474,000
Derivative liabilities, non-current	4,251,000		12,384,000		5,614,000
Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative liabilities, current	3,480,000		6,965,000		3,474,000
Derivative liabilities, non-current	4,251,000		12,384,000		5,614,000
Derivative, Notional Amount	75,000,000	[1]	150,000,000	[2]	75,000,000	[1]
Weighted Average Fixed Interest Rate	4.97%		5.04%		4.97%
Derivative, Remaining Maturity	2 years 6 months		3 years 6 months		3 years
Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net	(3,500,000)
Not Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative liabilities, current			61,899,000
Derivative liabilities, non-current			0
Derivative, Notional Amount			250,000,000	[3]
Weighted Average Fixed Interest Rate			5.67%
Derivative, Remaining Maturity			0 years 6 months
Oil and Gas [Member]
Derivative [Line Items]
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months	(3,400,000)
Power Generation [Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount			75,000,000
Natural Gas, Distribution [Member] | Utilities Group [Member]
Derivative [Line Items]
Derivative assets, current	1,737,000		0		662,000
Derivative assets, non-current	0		0		0
Derivative liabilities, non-current	0		0		0
Net Unrealized (Gain) Loss Included in Regulatory assets or Regulatory liabilities	3,561,000		8,450,000		7,567,000
Natural Gas, Distribution [Member] | Utilities Group [Member] | Future [Member] | Purchase Contract [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	16,240,000		13,330,000		17,930,000
Derivative, Remaining Maturity	78 months		77 months		84 months
Natural Gas, Distribution [Member] | Utilities Group [Member] | Commodity Option [Member] | Purchase Contract [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	3,980,000		2,850,000		3,890,000
Derivative, Remaining Maturity	9 months		5 months		8 months
Natural Gas, Distribution [Member] | Utilities Group [Member] | Basis Swap [Member] | Purchase Contract [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	13,415,000		10,650,000		14,785,000
Derivative, Remaining Maturity	66 months		66 months		60 months
Crude Oil [Member] | Oil and Gas [Member] | Swaps and Options [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	424,500	[4]	520,500	[4]	412,500	[4]
Maximum terms in months - Hedged in Cash Flow Hedge	1 month	[5]	6 months	[5]	3 months	[5]
Derivative assets, current	0		610,000		55,000
Derivative assets, non-current	0		0		0
Derivative liabilities, current	0		130,000		0
Derivative liabilities, non-current	0		0		0
Natural Gas [Member] | Oil and Gas [Member] | Swap [Member]
Derivative [Line Items]
Derivative, Nonmonetary Notional Amount	9,265,000	[4]	10,712,500	[4]	7,082,500	[4]
Maximum terms in months - Hedged in Cash Flow Hedge	1 month	[5]	1 month	[5]	1 month	[5]
Derivative assets, current	0		293,000		0
Derivative assets, non-current	0		0		0
Derivative liabilities, current	0		276,000		0
Derivative liabilities, non-current	0		0		0
Corporate[Member] | Designated as Hedging Instrument [Member] | Interest Rate Swap [Member]
Derivative [Line Items]
Derivative, Notional Amount			$ 75,000,000

[1] These swaps are designated to borrowings on our Revolving Credit Facility, and are priced using three-month LIBOR, matching the floating portion of the related debt.

[2] At June 30, 2013, $75 million of these interest rate swaps were designated to borrowings on our Revolving Credit Facility and $75 million were designated to borrowings on our project financing debt at Black Hills Wyoming. These swaps are priced using three-month LIBOR, matching the floating portion of the related debt. The portion of the swaps that were designated to Black Hills Wyoming were settled during the fourth quarter of 2013 upon repayment of the Black Hills Wyoming project financing.

[3] These swaps were settled during the fourth quarter of 2013.

[4] Crude oil in Bbls, natural gas in MMBtus.

[5] Refers to the term of the derivative instrument. Assets and liabilities are classified as current/non-current based on the term of the hedged transaction and the corresponding settlement of the derivative instrument.

XML

Fair Value of Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments [Table Text Block]

The estimated fair values of our financial instruments, excluding derivatives which are presented in Note 9, were as follows (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents (a)	$	14,697	$	14,697	$	7,841	$	7,841	$	30,633	$	30,633
Restricted cash and equivalents (a)	$	2	$	2	$	2	$	2	$	7,279	$	7,279
Notes payable (a)	$	132,700	$	132,700	$	82,500	$	82,500	$	100,000	$	100,000
Long-term debt, including current maturities (b)	$	1,396,950	$	1,578,756	$	1,396,948	$	1,491,422	$	1,214,066	$	1,323,543

__________

(a) Carrying value approximates fair value due to either the short-term length of maturity or variable interest rates that approximate prevailing market rates, and therefore is classified in Level 1 in the fair value hierarchy.

(b) Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy.

XML

Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2014

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Reclassification Out of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The components of the reclassification adjustments, net of tax, included in Other Comprehensive Income (Loss) for the periods were as follows (in thousands):

	Location on the Condensed Consolidated Statements of Income (Loss)	Amount Reclassified from AOCI
		Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
Gains (losses) on cash flow hedges:
Interest rate swaps	Interest expense	$	926		$	1,820		$	1,820		$	3,616
Commodity contracts	Revenue	1,251			28			1,562			(1,064		)
		2,177			1,848			3,382			2,552
Income tax	Income tax benefit (expense)	(774		)	(647		)	(1,199		)	(883		)
Reclassification adjustments related to cash flow hedges, net of tax		$	1,403		$	1,201		$	2,183		$	1,669
Amortization of defined benefit plans:
Prior service cost	Utilities - Operations and maintenance	$	(25	)	$	(31	)	$	(51	)	$	(62	)
	Non-regulated energy operations and maintenance	(84		)	(32		)	(71		)	(64		)
Actuarial gain (loss)	Utilities - Operations and maintenance	158			421			315			842
	Non-regulated energy operations and maintenance	101			274			186			548
		150			632			379			1,264
Income tax	Income tax benefit (expense)	(52		)	(268		)	(133		)	(443		)
Reclassification adjustments related to defined benefit plans, net of tax		$	98		$	364		$	246		$	821

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Balances by classification included within Accumulated other comprehensive income (loss) on the accompanying Condensed Consolidated Balance Sheets are as follows (in thousands):

	Derivatives Designated as Cash Flow Hedges			Employee Benefit Plans			Total
Balance as of December 31, 2012	$	(15,713	)	$	(19,775	)	$	(35,488	)
Other comprehensive income (loss), net of tax	(1,193		)	457			(736		)
Balance as of March 31, 2013	(16,906		)	(19,318		)	(36,224		)
Other comprehensive income (loss), net of tax	5,079			364			5,443
Balance as of June 30, 2013	$	(11,827	)	$	(18,954	)	$	(30,781	)
Balance as of December 31, 2013	$	(7,133	)	$	(10,289	)	$	(17,422	)
Other comprehensive income (loss), net of tax	(1,478		)	311			(1,167		)
Balance as of March 31, 2014	(8,611		)	(9,978		)	(18,589		)
Other comprehensive income (loss), net of tax	(556		)	(296		)	(852		)
Balance as of June 30, 2014	$	(9,167	)	$	(10,274	)	$	(19,441	)

XML

Business Segment Information

6 Months Ended

Jun. 30, 2014

Segment Reporting Information, Additional Information [Abstract]

Business Segment Information [Text Block]

BUSINESS SEGMENT INFORMATION

Segment information and Corporate activities included in the accompanying Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	158,740	$	3,144		$	11,427
Gas	102,499		—			1,994
Non-regulated Energy:
Power Generation	1,267		20,713			7,194
Coal Mining	5,583		9,068			2,016
Oil and Gas	15,148		—			(1,660		)
Corporate activities	—		—			(1,151		)
Inter-company eliminations	—		(32,925		)	—
Total	$	283,237	$	—		$	19,820

Three Months Ended June 30, 2013	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	154,338	$	3,694		$	10,610
Gas	105,836		—			3,192
Non-regulated Energy:
Power Generation	1,031		19,094			5,031
Coal Mining	6,807		7,511			1,973
Oil and Gas	11,814		—			(1,964		)
Corporate activities (a)	—		—			11,679
Inter-company eliminations	—		(30,299		)	(3		)
Total	$	279,826	$	—		$	30,518

Six Months Ended June 30, 2014	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	336,835	$	7,151		$	26,002
Gas	361,836		—			26,692
Non-regulated Energy:
Power Generation	2,536		41,792			15,267
Coal Mining	12,201		17,948			4,480
Oil and Gas	29,998		—			(3,682		)
Corporate activities	—		—			(821		)
Inter-company eliminations	—		(66,891		)	—
Total	$	743,406	$	—		$	67,938

Six Months Ended June 30, 2013	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	312,821	$	7,841		$	22,966
Gas	305,648		—			21,675
Non-regulated Energy:
Power Generation	2,053		38,432			10,675
Coal Mining	12,817		15,084			3,038
Oil and Gas	27,158		—			(2,017		)
Corporate activities (a)	—		—			17,378
Inter-company eliminations	—		(61,357		)	—
Total	$	660,497	$	—		$	73,715

__________

(a) Corporate activities include a $12 million and a $17 million after-tax non-cash mark-to-market gain for the three and six months ended June 30, 2013, respectively on certain interest rate swaps.

Segment information and Corporate balances included in the accompanying Condensed Consolidated Balance Sheets were as follows (in thousands):

Total Assets (net of inter-company eliminations) as of:	June 30, 2014		December 31, 2013		June 30, 2013
Utilities:
Electric (a)	$	2,603,900	$	2,525,947	$	2,417,952
Gas	799,365		805,617		734,337
Non-regulated Energy:
Power Generation (a)	85,269		95,692		108,515
Coal Mining	73,701		78,825		82,553
Oil and Gas	307,837		288,366		256,855
Corporate activities	100,426		80,731		146,302
Total assets	$	3,970,498	$	3,875,178	$	3,746,514

__________

(a) The PPA under which Black Hills Colorado IPP provides generation to support Colorado Electric customers from the Pueblo Airport Generation Station is accounted for as a capital lease. As such, assets owned by our Power Generation segment are recorded at Colorado Electric under accounting for a capital lease.

XML

Supplemental Disclosure of Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2014

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosure of Cash Flow Information [Table Text Block]

Six months ended	June 30, 2014			June 30, 2013
	(in thousands)
Non-cash investing and financing activities from continuing operations—
Property, plant and equipment acquired with accrued liabilities	$	40,611		$	45,000
Increase (decrease) in capitalized assets associated with asset retirement obligations	$	(2,785	)	$	—
Cash (paid) refunded during the period for continuing operations—
Interest (net of amounts capitalized)	$	(35,009	)	$	(44,191	)
Income taxes, net	$	(396	)	$	(5,406	)

XML

Basic to Dilutive EPS (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss) available for common stock	$ 19,820	$ 30,518	$ 67,938	$ 73,715
Weighted average shares - basic	44,399	44,172	44,365	44,113
Dilutive Effect on Basic Earnings Per Share [Abstract]
Equity compensation, shares	189	240	206	250
Weighted average shares - diluted	44,588	44,412	44,571	44,363

XML

Commitments and Contingencies - Bond Purchase Agreement (Details) (First Mortgage Bonds Due 2044 [Member], Electric Utilities [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Debt Instrument [Line Items]
Debt Instrument Aggregate Principal Amount Entered Into Private Placement	$ 160
Black Hills Power [Member]
Debt Instrument [Line Items]
Debt Instrument Aggregate Principal Amount Entered Into Private Placement	85
Debt Instrument, Interest Rate, Stated Percentage	4.43%
Cheyenne Light [Member]
Debt Instrument [Line Items]
Debt Instrument Aggregate Principal Amount Entered Into Private Placement	$ 75
Debt Instrument, Interest Rate, Stated Percentage	4.53%

XML

Condensed Statements of Income (unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue	$ 283,237	$ 279,826	$ 743,406	$ 660,497
Utilities -
Fuel, purchased power and cost of natural gas sold	101,331	99,172	331,799	267,345
Operations and maintenance	66,074	64,977	137,301	130,667
Non-regulated energy operations and maintenance	21,350	20,890	43,682	42,219
Depreciation, depletion and amortization	36,712	35,152	72,795	69,933
Taxes - property, production and severance	11,044	10,069	21,380	20,449
Other operating expenses	149	529	274	1,001
Total operating expenses	236,660	230,789	607,231	531,614
Operating income	46,577	49,037	136,175	128,883
Interest charges -
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts and realized settlements on interest rate swaps)	(17,886)	(23,369)	(35,746)	(47,041)
Allowance for funds used during construction - borrowed	256	411	526	484
Capitalized interest	246	272	503	538
Unrealized gain (loss) on interest rate swaps, net	0	18,793	0	26,249
Interest income	576	475	966	760
Allowance for funds used during construction - equity	293	42	531	242
Other income (expense), net	409	473	1,000	879
Total other income (expense), net	(16,106)	(2,903)	(32,220)	(17,889)
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	30,471	46,134	103,955	110,994
Equity in earnings (loss) of unconsolidated subsidiaries	0	0	0	(86)
Income tax benefit (expense)	(10,651)	(15,616)	(36,017)	(37,193)
Net income (loss) available for common stock	$ 19,820	$ 30,518	$ 67,938	$ 73,715
Earnings (loss) per share, Basic -
Total income (loss) per share, Basic	$ 0.45	$ 0.69	$ 1.53	$ 1.67
Earnings (loss) per share, Diluted -
Total income (loss) per share, Diluted	$ 0.44	$ 0.69	$ 1.52	$ 1.66
Weighted Average Number of Shares Outstanding:
Basic	44,399	44,172	44,365	44,113
Diluted	44,588	44,412	44,571	44,363
Dividends paid per share of common stock	$ 0.39	$ 0.38	$ 0.78	$ 0.76

XML

Risk Management Activities Hedging Activities (Details) (Cash Flow Hedging [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)	$ (3,074)	$ 6,052	$ (6,638)	$ 3,274
Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)	(2,177)	(1,848)	(3,382)	(2,552)
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0	0	0
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)	(337)	1,067	(429)	1,048
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	0	0	0	0
Interest Rate Swap [Member] | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)	(926)	(1,820)	(1,820)	(3,616)
Commodity Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)	(2,737)	4,985	(6,209)	2,226
Commodity Contract [Member] | Sales Revenue, Goods, Net [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)	(1,251)	(28)	(1,562)	1,064
Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	$ 0	$ 0	$ 0	$ 0

XML

Condensed Consoldiated Statement of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Operating activities:
Net income (loss) available for common stock	$ 67,938	$ 73,715
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	72,795	69,933
Deferred financing cost amortization	1,107	2,188
Derivative fair value adjustments	(1,660)	4,248
Stock compensation	6,908	6,896
Unrealized (gain) loss on interest rate swaps, net	0	(26,249)
Deferred income taxes	35,514	36,607
Employee benefit plans	7,409	11,096
Other adjustments, net	1,481	8,967
Changes in certain operating assets and liabilities:
Materials, supplies and fuel	7,314	8,940
Accounts receivable, unbilled revenue and other operating assets	(5,851)	28,377
Accounts payable and other current liabilities	(24,978)	(26,739)
Other operating activities, net	5,858	(594)
Net cash provided by (used in) operating activities	173,835	197,385
Investing activities:
Property, plant and equipment additions	(177,302)	(147,230)
Other investing activities	(2,994)	2,006
Net cash provided by (used in) investing activities	(180,296)	(145,224)
Financing activities:
Dividends paid on common stock	(34,803)	(33,774)
Common stock issued	1,693	2,570
Short-term borrowings - issuances	214,100	133,300
Short-term borrowings - repayments	(163,900)	(310,300)
Long-term debt - issuances	0	275,000
Long-term debt - repayments	0	(103,786)
Other financing activities	(3,773)	0
Net cash provided by (used in) financing activities	13,317	(36,990)
Net change in cash and cash equivalents	6,856	15,171
Cash and Cash Equivalents:
Cash and cash equivalents, beginning of period	7,841	15,462
Cash and cash equivalents, end of period	$ 14,697	$ 30,633

XML

Guarantees (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014
Coal Mining [Member] | Surety Bond [Member]
Statement [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 65,744	[1]
Gas Utilities [Member] | Payment Guarantee [Member]
Statement [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	$ 70,000

[1] We have guarantees in place for reclamation and surety bonds for our subsidiaries. The guarantees were entered into in the normal course of business. To the extent liabilities are incurred as a result of activities covered by the surety bonds, such liabilities are included in our Condensed Consolidated Balance Sheets.

XML

Information Relating to Segment Statement of Income (Details) (USD $)	3 Months Ended			6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013		Jun. 30, 2014	Jun. 30, 2013
Segment Reporting Information [Line Items]
Revenue, Net	$ 283,237,000	$ 279,826,000		$ 743,406,000	$ 660,497,000
Net Income (Loss)	19,820,000	30,518,000		67,938,000	73,715,000
Mark-to-market gain (loss) on certain interest rate swaps, net of tax		12,000,000			17,000,000
Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	(32,925,000)	(30,299,000)		(66,891,000)	(61,357,000)
Net Income (Loss)	0	(3,000)		0	0
Corporate activities[Member]
Segment Reporting Information [Line Items]
Revenue, Net	0	0		0	0
Net Income (Loss)	(1,151,000)	11,679,000	[1]	(821,000)	17,378,000	[1]
Consolidation, Eliminations [Member]
Segment Reporting Information [Line Items]
Revenue, Net	0	0		0	0
Electric Utilities [Member]
Segment Reporting Information [Line Items]
Revenue, Net	158,740,000	154,338,000		336,835,000	312,821,000
Net Income (Loss)	11,427,000	10,610,000		26,002,000	22,966,000
Electric Utilities [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	3,144,000	3,694,000		7,151,000	7,841,000
Gas Utilities [Member]
Segment Reporting Information [Line Items]
Revenue, Net	102,499,000	105,836,000		361,836,000	305,648,000
Net Income (Loss)	1,994,000	3,192,000		26,692,000	21,675,000
Gas Utilities [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	0	0		0	0
Power Generation [Member]
Segment Reporting Information [Line Items]
Revenue, Net	1,267,000	1,031,000		2,536,000	2,053,000
Net Income (Loss)	7,194,000	5,031,000		15,267,000	10,675,000
Power Generation [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	20,713,000	19,094,000		41,792,000	38,432,000
Coal Mining [Member]
Segment Reporting Information [Line Items]
Revenue, Net	5,583,000	6,807,000		12,201,000	12,817,000
Net Income (Loss)	2,016,000	1,973,000		4,480,000	3,038,000
Coal Mining [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	9,068,000	7,511,000		17,948,000	15,084,000
Oil and Gas [Member]
Segment Reporting Information [Line Items]
Revenue, Net	15,148,000	11,814,000		29,998,000	27,158,000
Net Income (Loss)	(1,660,000)	(1,964,000)		(3,682,000)	(2,017,000)
Oil and Gas [Member] | Intersegment Elimination [Member]
Segment Reporting Information [Line Items]
Revenue, Net	$ 0	$ 0		$ 0	$ 0

[1] Corporate activities include a $12 million and a $17 million after-tax non-cash mark-to-market gain for the three and six months ended June 30, 2013, respectively on certain interest rate swaps.

XML

Business Segment Information (Tables)

6 Months Ended

Jun. 30, 2014

Segment Reporting Information, Additional Information [Abstract]

Schedule of Segment Reporting Information [Table Text Block]

Segment information and Corporate activities included in the accompanying Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	158,740	$	3,144		$	11,427
Gas	102,499		—			1,994
Non-regulated Energy:
Power Generation	1,267		20,713			7,194
Coal Mining	5,583		9,068			2,016
Oil and Gas	15,148		—			(1,660		)
Corporate activities	—		—			(1,151		)
Inter-company eliminations	—		(32,925		)	—
Total	$	283,237	$	—		$	19,820

Three Months Ended June 30, 2013	External Operating Revenue		Inter-company Operating Revenue			Net Income (Loss)
Utilities:
Electric	$	154,338	$	3,694		$	10,610
Gas	105,836		—			3,192
Non-regulated Energy:
Power Generation	1,031		19,094			5,031
Coal Mining	6,807		7,511			1,973
Oil and Gas	11,814		—			(1,964		)
Corporate activities (a)	—		—			11,679
Inter-company eliminations	—		(30,299		)	(3		)
Total	$	279,826	$	—		$	30,518

Six Months Ended June 30, 2014	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	336,835	$	7,151		$	26,002
Gas	361,836		—			26,692
Non-regulated Energy:
Power Generation	2,536		41,792			15,267
Coal Mining	12,201		17,948			4,480
Oil and Gas	29,998		—			(3,682		)
Corporate activities	—		—			(821		)
Inter-company eliminations	—		(66,891		)	—
Total	$	743,406	$	—		$	67,938

Six Months Ended June 30, 2013	External Operating Revenues		Intercompany Operating Revenues			Net Income (Loss)
Utilities:
Electric	$	312,821	$	7,841		$	22,966
Gas	305,648		—			21,675
Non-regulated Energy:
Power Generation	2,053		38,432			10,675
Coal Mining	12,817		15,084			3,038
Oil and Gas	27,158		—			(2,017		)
Corporate activities (a)	—		—			17,378
Inter-company eliminations	—		(61,357		)	—
Total	$	660,497	$	—		$	73,715

__________

(a) Corporate activities include a $12 million and a $17 million after-tax non-cash mark-to-market gain for the three and six months ended June 30, 2013, respectively on certain interest rate swaps.

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

Segment information and Corporate balances included in the accompanying Condensed Consolidated Balance Sheets were as follows (in thousands):

Total Assets (net of inter-company eliminations) as of:	June 30, 2014		December 31, 2013		June 30, 2013
Utilities:
Electric (a)	$	2,603,900	$	2,525,947	$	2,417,952
Gas	799,365		805,617		734,337
Non-regulated Energy:
Power Generation (a)	85,269		95,692		108,515
Coal Mining	73,701		78,825		82,553
Oil and Gas	307,837		288,366		256,855
Corporate activities	100,426		80,731		146,302
Total assets	$	3,970,498	$	3,875,178	$	3,746,514

__________

(a) The PPA under which Black Hills Colorado IPP provides generation to support Colorado Electric customers from the Pueblo Airport Generation Station is accounted for as a capital lease. As such, assets owned by our Power Generation segment are recorded at Colorado Electric under accounting for a capital lease.

XML

Segment and Corporate Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 3,970,498		$ 3,875,178		$ 3,746,514
Corporate activities[Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	100,426		80,731		146,302
Electric Utilities [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	2,603,900	[1]	2,525,947	[1]	2,417,952	[1]
Gas Utilities [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	799,365		805,617		734,337
Power Generation [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	85,269	[1]	95,692	[1]	108,515	[1]
Coal Mining [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	73,701		78,825		82,553
Oil and Gas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Assets	$ 307,837		$ 288,366		$ 256,855

[1] The PPA under which Black Hills Colorado IPP provides generation to support Colorado Electric customers from the Pueblo Airport Generation Station is accounted for as a capital lease. As such, assets owned by our Power Generation segment are recorded at Colorado Electric under accounting for a capital lease.

XML

Regulatory Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2014

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of Regulatory Assets and Liabilities [Table Text Block]

We had the following regulatory assets and liabilities (in thousands):

	Maximum	As of		As of		As of
	Amortization (in years)	June 30, 2014		December 31, 2013		June 30, 2013
Regulatory assets
Deferred energy and fuel cost adjustments - current (a)(d)	1	$	29,605	$	16,775	$	15,951
Deferred gas cost adjustments and natural gas price derivatives (a)(d)	7	39,040		12,366		13,090
AFUDC (b)	45	12,468		12,315		12,456
Employee benefit plans (c)	13	65,874		67,059		115,379
Environmental (a)	subject to approval	1,314		1,800		1,798
Asset retirement obligations (a)	44	3,278		3,266		3,257
Bond issue cost (a)	24	3,347		3,419		3,489
Renewable energy standard adjustment (a)	5	14,501		14,186		14,694
Flow through accounting (c)	35	22,754		20,916		17,995
Other regulatory assets (a)	15	10,780		10,546		8,795
		$	202,961	$	162,648	$	206,904
Regulatory liabilities
Deferred energy and gas costs (a)	1	$	6,490	$	11,708	$	22,340
Employee benefit plans (c)	13	34,356		34,431		60,214
Cost of removal (a)	44	70,841		64,970		59,461
Other regulatory liabilities (c)	25	8,603		9,047		7,548
		$	120,290	$	120,156	$	149,563

__________

(a) Recovery of costs, but we are not allowed a rate of return.

(b) In addition to recovery of costs, we are allowed a rate of return.

(c) In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base, respectively.

(d) Our deferred energy, fuel cost, and gas cost adjustments represent the cost of electricity and gas delivered to our electric and gas utility customers that is either higher or lower than current rates and will be recovered or refunded in future rates. Increases in the current year balances as of June 30, 2014 are primarily due to higher natural gas prices driven by demand and market conditions during our peak winter heating season. Our electric and gas utilities file periodic quarterly, semi-annual, and/or annual filings to recover these costs based on the respective cost mechanisms approved by their applicable state utility commissions.

XML

Management's Statement

6 Months Ended

Jun. 30, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Management's Statement [Text Block]

MANAGEMENT’S STATEMENT

The unaudited Condensed Consolidated Financial Statements included herein have been prepared by Black Hills Corporation (together with our subsidiaries the “Company,” “us,” “we,” or “our”), pursuant to the rules and regulations of the SEC. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been condensed or omitted pursuant to such rules and regulations; however, we believe that the footnotes adequately disclose the information presented. These Condensed Consolidated Financial Statements should be read in conjunction with the consolidated financial statements and the notes thereto included in our 2013 Annual Report on Form 10-K filed with the SEC.

We conduct our operations through the following reportable segments: Electric Utilities, Gas Utilities, Power Generation, Coal Mining and Oil and Gas. Our reportable segments are based on our method of internal reporting, which generally segregates the strategic business groups due to differences in products, services and regulation. All of our operations and assets are located within the United States.

Accounting methods historically employed require certain estimates as of interim dates. The information furnished in the accompanying Condensed Consolidated Financial Statements reflects all adjustments, including accruals, which are, in the opinion of management, necessary for a fair presentation of the June 30, 2014, December 31, 2013, and June 30, 2013 financial information and are of a normal recurring nature. Certain industries in which we operate are highly seasonal, and revenue from, and certain expenses for, such operations may fluctuate significantly among quarterly periods. Demand for electricity and natural gas is sensitive to seasonal cooling, heating and industrial load requirements, as well as changes in market price. In particular, the normal peak usage season for electric utilities is June through August while the normal peak usage season for gas utilities is November through March. Significant earnings variances can be expected between the Gas Utilities segment’s peak and off-peak seasons. Due to this seasonal nature, our results of operations for the three and six months ended June 30, 2014 and June 30, 2013, and our financial condition as of June 30, 2014, December 31, 2013, and June 30, 2013, are not necessarily indicative of the results of operations and financial condition to be expected as of or for any other period. All earnings per share amounts discussed refer to diluted earnings per share unless otherwise noted.

Recently Issued and Adopted Accounting Standards

We have implemented all new accounting pronouncements that are in effect and may impact our financial statements and do not believe that there are any other new accounting pronouncements that have been issued that might have a material impact on our financial position, results of operations, or cash flows.

Revenue from Contracts with Customers, ASU 2014-09

In May 2014, the FASB issued ASU 2014-09, Revenue from Contracts with Customers. The standard provides companies with a single model for use in accounting for revenue arising from contracts with customers and supersedes current revenue recognition guidance, including industry-specific revenue guidance. The core principle of the model is to recognize revenue when control of the goods or services transfers to the customer, as opposed to recognizing revenue when the risks and rewards transfer to the customer under the existing revenue guidance. ASU 2014-09 is effective for annual and interim reporting periods beginning after December 15, 2016 and early adoption is not permitted. We are currently assessing the impact, if any, that ASU 2014-09 will have on our financial position, results of operations, or cash flows.

XML

Condensed Consolidated Statement of Comprehensive Income (unaudited) Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net income (loss) available for common stock	$ 19,820	$ 30,518	$ 67,938	$ 73,715
Other comprehensive income (loss), net of tax:
Fair value adjustments on derivatives designated as cash flow hedges (net of tax (expense) benefit of $1,115 and $(2,174) for the three months ended 2014 and 2013 and $2,422 and $(1,057) for the six months ended 2014 and 2013, respectively)	(1,959)	3,878	(4,216)	2,217
Reclassification adjustments for cash flow hedges settled and included in net income (loss) (net of tax (expense) benefit of $(774) and $(647) for the three months ended 2014 and 2013 and $(1,199) and $(883) for the six months ended 2014 and 2013, respectively)	1,403	1,201	2,183	1,669
Benefit plan liability adjustments - net gain (loss) (net of tax of $0 and $0 for the three months ended 2014 and 2013 and $2 and $0 for the six months ended 2014 and 2013, respectively)	0	0	(2)	0
Benefit plan liability tax adjustments - net gain (loss)	(394)	0	(394)	0
Benefit plan liability adjustments - prior service cost (net of tax of $0 and $0 for the three months ended 2014 and 2013 and $(90) and $0 for the six months ended 2014 and 2013, respectively)	0	0	164	0
Reclassification adjustments of benefit plan liability - prior service cost (net of tax of $39 and $(268) for the three months ended 2014 and 2013 and $43 and $(251) for the six months ended 2014 and 2013, respectively)	(70)	364	(79)	318
Reclassification adjustments of benefit plan liability - net gain (loss) (net of tax of $(91) and $0 for the three months ended 2014 and 2013 and $(176) and $(192) for the six months ended 2014 and 2013, respectively)	168	0	325	503
Other comprehensive income (loss), net of tax	(852)	5,443	(2,019)	4,707
Comprehensive income (loss) available for common stock	18,968	35,961	65,919	78,422
Other Comprehensive Income (Loss), Tax, Portion Attributable to Parent, Parenthetical Disclosures
Fair value adjustment on derivatives designated as cash flow hedges, (tax) benefit	1,115	(2,174)	2,422	(1,057)
Reclassification adjustments of cash flow hedges settled and included in net income, (tax) benefit	(774)	(647)	(1,199)	(883)
Benefit plan liability adjustments net gain, (tax) benefit	0	0	2	0
Benefit plan liability adjustments prior service cost, (tax) benefit	0	0	(90)	0
Reclassification adjustment of benefit plan prior service cost included in net income, (tax) benefit	39	(268)	43	(251)
Reclassification adjustment of benefit plan liabilities actuarial gain (loss), (tax) benefit	$ (91)	$ 0	$ (176)	$ (192)

XML

Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2014

Other Comprehensive Income (Loss), Net of Tax [Abstract]

Other Comprehensive Income (Loss) [Text Block]

OTHER COMPREHENSIVE INCOME (LOSS)

The components of the reclassification adjustments, net of tax, included in Other Comprehensive Income (Loss) for the periods were as follows (in thousands):

	Location on the Condensed Consolidated Statements of Income (Loss)	Amount Reclassified from AOCI
		Three Months Ended						Six Months Ended
		June 30, 2014			June 30, 2013			June 30, 2014			June 30, 2013
Gains (losses) on cash flow hedges:
Interest rate swaps	Interest expense	$	926		$	1,820		$	1,820		$	3,616
Commodity contracts	Revenue	1,251			28			1,562			(1,064		)
		2,177			1,848			3,382			2,552
Income tax	Income tax benefit (expense)	(774		)	(647		)	(1,199		)	(883		)
Reclassification adjustments related to cash flow hedges, net of tax		$	1,403		$	1,201		$	2,183		$	1,669
Amortization of defined benefit plans:
Prior service cost	Utilities - Operations and maintenance	$	(25	)	$	(31	)	$	(51	)	$	(62	)
	Non-regulated energy operations and maintenance	(84		)	(32		)	(71		)	(64		)
Actuarial gain (loss)	Utilities - Operations and maintenance	158			421			315			842
	Non-regulated energy operations and maintenance	101			274			186			548
		150			632			379			1,264
Income tax	Income tax benefit (expense)	(52		)	(268		)	(133		)	(443		)
Reclassification adjustments related to defined benefit plans, net of tax		$	98		$	364		$	246		$	821

Balances by classification included within Accumulated other comprehensive income (loss) on the accompanying Condensed Consolidated Balance Sheets are as follows (in thousands):

	Derivatives Designated as Cash Flow Hedges			Employee Benefit Plans			Total
Balance as of December 31, 2012	$	(15,713	)	$	(19,775	)	$	(35,488	)
Other comprehensive income (loss), net of tax	(1,193		)	457			(736		)
Balance as of March 31, 2013	(16,906		)	(19,318		)	(36,224		)
Other comprehensive income (loss), net of tax	5,079			364			5,443
Balance as of June 30, 2013	$	(11,827	)	$	(18,954	)	$	(30,781	)
Balance as of December 31, 2013	$	(7,133	)	$	(10,289	)	$	(17,422	)
Other comprehensive income (loss), net of tax	(1,478		)	311			(1,167		)
Balance as of March 31, 2014	(8,611		)	(9,978		)	(18,589		)
Other comprehensive income (loss), net of tax	(556		)	(296		)	(852		)
Balance as of June 30, 2014	$	(9,167	)	$	(10,274	)	$	(19,441	)

XML

Document and Entity Information Document	6 Months Ended
	Jun. 30, 2014	Jul. 31, 2014
Document Information [Line Items]
Entity Registrant Name	BLACK HILLS CORP /SD/
Entity Central Index Key	0001130464
Document Type	10-Q
Document Period End Date	Jun. 30, 2014
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q2
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		44,641,421
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No

XML

Supplemental Disclosure of Cash Flow Information

6 Months Ended

Jun. 30, 2014

Supplemental Cash Flow Information [Abstract]

Supplemental Disclosure of Cash Flow Information [Text Block]

SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION

Six months ended	June 30, 2014			June 30, 2013
	(in thousands)
Non-cash investing and financing activities from continuing operations—
Property, plant and equipment acquired with accrued liabilities	$	40,611		$	45,000
Increase (decrease) in capitalized assets associated with asset retirement obligations	$	(2,785	)	$	—
Cash (paid) refunded during the period for continuing operations—
Interest (net of amounts capitalized)	$	(35,009	)	$	(44,191	)
Income taxes, net	$	(396	)	$	(5,406	)

XML

Condensed Consolidated Balance Sheets (unaudited) Statement (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Current assets:
Cash and cash equivalents	$ 14,697	$ 7,841	$ 30,633
Restricted cash and equivalents	2	2	7,279
Accounts receivable, net	135,145	177,573	132,726
Materials, supplies and fuel	81,164	88,478	73,768
Derivative assets, current	1,737	717	903
Income tax receivable, net	1,043	1,460	146
Deferred income tax assets, net, current	23,872	18,889	38,764
Regulatory assets, current	64,735	24,451	26,258
Other current assets	21,660	25,877	27,595
Total current assets	344,055	345,288	338,072
Investments	17,096	16,697	16,566
Property, plant and equipment	4,408,291	4,259,445	4,066,502
Less accumulated depreciation and depletion	(1,325,660)	(1,269,148)	(1,234,578)
Total property, plant and equipment, net	3,082,631	2,990,297	2,831,924
Other assets:
Goodwill	353,396	353,396	353,396
Intangible assets, net	3,286	3,397	3,508
Regulatory assets, non-current	138,226	138,197	180,646
Other assets, non-current	31,808	27,906	22,402
Total other assets, non-current	526,716	522,896	559,952
TOTAL ASSETS	3,970,498	3,875,178	3,746,514
Current liabilities:
Accounts payable	100,098	130,416	88,071
Accrued liabilities	141,177	151,277	135,819
Derivative liabilities, current	3,480	3,474	69,270
Regulatory liabilities, current	828	10,727	20,550
Notes payable	132,700	82,500	100,000
Current maturities of long-term debt	275,000	0	255,507
Total current liabilities	653,283	378,394	669,217
Long-term debt, net of current maturities	1,121,950	1,396,948	958,559
Deferred credits and other liabilities:
Deferred income tax liabilities, net, non-current	476,059	432,287	387,674
Derivative liabilities, non-current	4,251	5,614	12,384
Regulatory liabilities, non-current	119,462	109,429	129,013
Benefit plan liabilities	116,403	111,479	177,216
Other deferred credits and other liabilities	137,765	133,279	129,763
Total deferred credits and other liabilities	853,940	792,088	836,050
Commitments and contingencies (See Notes 7, 8, 13, 14 and 15)
Stockholders’ equity:
Common stock $1 par value; 100,000,000 shares authorized; issued 44,682,885; 44,550,239; and 44,516,472 shares, respectively	44,683	44,550	44,517
Additional paid-in capital	744,505	742,344	737,729
Retained earnings	573,379	540,244	532,810
Treasury stock, at cost – 40,951; 50,877; and 42,480 shares, respectively	(1,801)	(1,968)	(1,587)
Accumulated other comprehensive income (loss)	(19,441)	(17,422)	(30,781)
Total stockholders’ equity	1,341,325	1,307,748	1,282,688
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 3,970,498	$ 3,875,178	$ 3,746,514

XML

Earnings Per Share

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Earnings Per Share [Text Block]

EARNINGS PER SHARE

A reconciliation of share amounts used to compute Earnings (loss) per share in the accompanying Condensed Consolidated Statements of Income (loss) is as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net income (loss) available for common stock	$	19,820	$	30,518	$	67,938	$	73,715
Weighted average shares - basic	44,399		44,172		44,365		44,113
Dilutive effect of:
Equity compensation	189		240		206		250
Weighted average shares - diluted	44,588		44,412		44,571		44,363

The following outstanding securities were not included in the computation of diluted earnings per share as their effect would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Equity compensation	81	28	63	34
Anti-dilutive shares	81	28	63	34

XML

Materials, Supplies and Fuel

6 Months Ended

Jun. 30, 2014

Inventory, Net [Abstract]

Materials, Supplies and Fuel [Text Block]

MATERIALS, SUPPLIES AND FUEL

The following amounts by major classification are included in Materials, supplies and fuel in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014		December 31, 2013		June 30, 2013
Materials and supplies	$	51,925	$	50,196	$	51,334
Fuel - Electric Utilities	7,679		6,213		6,817
Natural gas in storage held for distribution	21,560		32,069		15,617
Total materials, supplies and fuel	$	81,164	$	88,478	$	73,768

XML

Accounts Receivable Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2014

Receivables [Abstract]

Schedule of Accounts Receivable [Table Text Block]

Following is a summary of Accounts receivable, net included in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2014	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	48,333	$	21,716	$	(622	)	$	69,427
Gas Utilities	43,104		9,265		(1,027		)	51,342
Power Generation	1,388		—		—			1,388
Coal Mining	1,866		—		—			1,866
Oil and Gas	9,123		—		(13		)	9,110
Corporate	2,012		—		—			2,012
Total	$	105,826	$	30,981	$	(1,662	)	$	135,145

	Accounts		Unbilled		Less Allowance for			Accounts
December 31, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	52,437	$	23,823	$	(666	)	$	75,594
Gas Utilities	49,162		41,195		(558		)	89,799
Power Generation	1,722		—		—			1,722
Coal Mining	1,711		—		—			1,711
Oil and Gas	8,156		—		(13		)	8,143
Corporate	604		—		—			604
Total	$	113,792	$	65,018	$	(1,237	)	$	177,573

	Accounts		Unbilled		Less Allowance for			Accounts
June 30, 2013	Receivable, Trade		Revenue		Doubtful Accounts			Receivable, net
Electric Utilities	$	45,250	$	24,290	$	(630	)	$	68,910
Gas Utilities	38,749		13,192		(1,074		)	50,867
Power Generation	157		—		—			157
Coal Mining	2,503		—		—			2,503
Oil and Gas	8,373		—		(19		)	8,354
Corporate	1,935		—		—			1,935
Total	$	96,967	$	37,482	$	(1,723	)	$	132,726

XML

Employee Benefit Plans

6 Months Ended

Jun. 30, 2014

Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]

Pension and Other Postretirement Benefits Disclosure [Text Block]

EMPLOYEE BENEFIT PLANS

Defined Benefit Pension Plans

The components of net periodic benefit cost for the Defined Benefit Pension Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	1,362		$	1,608		$	2,724		$	3,216
Interest cost	3,963			3,825			7,926			7,650
Expected return on plan assets	(4,516		)	(4,654		)	(9,032		)	(9,308		)
Prior service cost	16			16			32			32
Net loss (gain)	1,201			3,062			2,403			6,124
Net periodic benefit cost	$	2,026		$	3,857		$	4,053		$	7,714

Non-pension Defined Benefit Postretirement Healthcare Plans

The components of net periodic benefit cost for the Non-pension Defined Benefit Postretirement Healthcare Plans were as follows (in thousands):

	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2013			2014			2013
Service cost	$	425		$	419		$	850		$	838
Interest cost	480			417			959			834
Expected return on plan assets	(21		)	(20		)	(42		)	(40		)
Prior service cost (benefit)	(107		)	(125		)	(214		)	(250		)
Net loss (gain)	40			121			80			242
Net periodic benefit cost	$	817		$	812		$	1,633		$	1,624

Supplemental Non-qualified Defined Benefit and Defined Contribution Plans

The components of net periodic benefit cost for the Supplemental Non-qualified Defined Benefit and Defined Contribution Plans were as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Service cost	$	374	$	348	$	749	$	696
Interest cost	362		332		724		664
Prior service cost	1		1		1		2
Net loss (gain)	124		198		249		396
Net periodic benefit cost	$	861	$	879	$	1,723	$	1,758

Contributions

We anticipate that we will make contributions to the benefit plans during 2014 and 2015. Contributions to the Defined Benefit Pension Plans are cash contributions made directly to the Pension Plan Trust accounts. Contributions to the Healthcare and Supplemental Plan are made in the form of benefit payments. Contributions and anticipated contributions are as follows (in thousands):

	Contributions Made		Contributions Made		Additional
	Three Months Ended June 30, 2014		Six Months Ended June 30, 2014		Contributions Anticipated for 2014		Contributions Anticipated for 2015
Defined Benefit Pension Plans	$	—	$	—	$	—	$	2,806
Non-pension Defined Benefit Postretirement Healthcare Plans	$	956	$	1,912	$	1,912	$	3,822
Supplemental Non-qualified Defined Benefit and Defined Contribution Plans	$	373	$	746	$	746	$	1,494

XML

Fair Value Measurements

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value Measurements [Text Block]

FAIR VALUE MEASUREMENTS

Derivative Financial Instruments

The accounting guidance for fair value measurements requires certain disclosures about assets and liabilities measured at fair value. This guidance establishes a hierarchical framework for disclosing the observability of the inputs utilized in measuring assets and liabilities at fair value. Assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. Our assessment of the significance of a particular input to the fair value measurement requires judgment and may affect the placement within the fair value hierarchy levels. We record transfers, if necessary, between levels at the end of the reporting period for all of our financial instruments. For additional information see Notes 1, 8 and 10 to the Consolidated Financial Statements included in our 2013 Annual Report on Form 10-K filed with the SEC.

Transfers into Level 3, if any, occur when significant inputs used to value the derivative instruments become less observable such as a significant decrease in the frequency and volume in which the instrument is traded, negatively impacting the availability of observable pricing inputs. Transfers out of Level 3, if any, occur when the significant inputs become more observable, such as when the time between the valuation date and the delivery date of a transaction becomes shorter, positively impacting the availability of observable pricing inputs.

Valuation Methodologies for Derivatives

Oil and Gas Segment:

• The commodity option contracts for our Oil and Gas segment are valued using the market approach and can include calls and puts. Fair value was derived using quoted prices from third-party brokers for similar instruments as to quantity and timing. The prices are then validated through third-party sources and therefore support Level 2 disclosure.

• The commodity basis swaps for our Oil and Gas segment are valued using the market approach with the instrument’s current forward price strip hedged for the same quantity and date and discounted based on the three-month LIBOR. We utilize observable inputs which support a Level 2 disclosure.

Utilities Segments:

• The commodity contracts for our Utilities Segments, valued using the market approach, include exchange-traded futures, options and basis swaps (Level 2) and OTC basis swaps (Level 3) for natural gas contracts. For Level 2 assets and liabilities, fair value was derived using broker quotes validated by the Chicago Mercantile Exchange pricing for similar instruments. For Level 3 assets and liabilities, fair value was derived using average price quotes from the OTC contract broker and an independent third-party market participant because these instruments are not traded on an exchange.

Corporate Activities:

• The interest rate swaps are valued using the market approach. We establish fair value by obtaining price quotes directly from the counterparty which are based on the floating three-month LIBOR curve for the term of the contract. The fair value obtained from the counterparty is then validated by utilizing a nationally recognized service that obtains observable inputs to compute fair value for the same instrument. In addition, the fair value for the interest rate swap derivatives includes a CVA component. The CVA considers the fair value of the interest rate swap and the probability of default based on the life of the contract. For the probability of a default component, we utilize observable inputs supporting a Level 2 disclosure by using our credit default spread, if available, or a generic credit default spread curve that takes into account our credit ratings.

Recurring Fair Value Measurements

There have been no significant transfers between Level 1 and Level 2 derivative balances. Amounts included in cash collateral and counterparty netting in the following tables represent the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions, netting of asset and liability positions permitted in accordance with accounting standards for offsetting as well as cash collateral posted with the same counterparties.

The following tables set forth by level within the fair value hierarchy our gross assets and gross liabilities and related offsetting as permitted by GAAP that were accounted for at fair value on a recurring basis for derivative instruments. A discussion of fair value of financial instruments is included in Note 10:

	As of June 30, 2014
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		—		—		—			—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		600		—		(600		)	—
Commodity derivatives — Utilities	—		4,342		—		(2,605		)	1,737
Total	$	—	$	4,942	$	—	$	(3,205	)	$	1,737
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		4,020		—		(4,020		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		2,030		—		(2,030		)	—
Commodity derivatives — Utilities	—		5,989		—		(5,989		)	—
Interest rate swaps	—		7,731		—		—			7,731
Total	$	—	$	19,770	$	—	$	(12,039	)	$	7,731

	As of December 31, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		130		—		(75		)	55
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		815		—		(815		)	—
Commodity derivatives —Utilities	—		3,030		—		(2,368		)	662
Total	$	—	$	3,975	$	—	$	(3,258	)	$	717
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	—	$	—	$	—		$	—
Basis Swaps -- Oil	—		1,229		—		(1,229		)	—
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		531		—		(531		)	—
Commodity derivatives — Utilities	—		9,100		—		(9,100		)	—
Interest rate swaps	—		9,088		—		—			9,088
Total	$	—	$	19,948	$	—	$	(10,860	)	$	9,088

	As of June 30, 2013
	Level 1		Level 2		Level 3		Cash Collateral and Counterparty Netting			Total
	(in thousands)
Assets:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	45	$	—	$	(6	)	$	39
Basis Swaps -- Oil	—		1,109		—		(538		)	571
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		1,882		—		(1,589		)	293
Commodity derivatives — Utilities	—		1,378		—		(1,378		)	—
Total	$	—	$	4,414	$	—	$	(3,511	)	$	903
Liabilities:
Commodity derivatives — Oil and Gas
Options -- Oil	$	—	$	181	$	—	$	(98	)	$	83
Basis Swaps -- Oil	—		350		—		(303		)	47
Options -- Gas	—		—		—		—			—
Basis Swaps -- Gas	—		445		—		(169		)	276
Commodity derivatives — Utilities	—		8,581		—		(8,581		)	—
Interest rate swaps	—		87,208		—		(5,960		)	81,248
Total	$	—	$	96,765	$	—	$	(15,111	)	$	81,654

Fair Value Measures by Balance Sheet Classification

As required by accounting standards for derivatives and hedges, fair values within the following tables are presented on a gross basis reflecting the netting of asset and liability positions permitted in accordance with accounting standards for offsetting and under terms of our master netting agreements and the impact of legally enforceable master netting agreements that allow us to settle positive and negative positions; however, the amounts do not include net cash collateral on deposit in margin accounts at June 30, 2014, December 31, 2013, and June 30, 2013, to collateralize certain financial instruments, which are included in Derivative assets and/or Derivative liabilities. Therefore, the balances are not indicative of either our actual credit exposure or net economic exposure. Additionally, the amounts below will not agree with the amounts presented on our Condensed Consolidated Balance Sheets, nor will they correspond to the fair value measurements presented in Note 8.

The following tables present the fair value and balance sheet classification of our derivative instruments (in thousands):

As of June 30, 2014
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	262	$	—
Commodity derivatives	Derivative assets — non-current	338		—
Commodity derivatives	Derivative liabilities — current	—		3,702
Commodity derivatives	Derivative liabilities — non-current	—		2,348
Interest rate swaps	Derivative liabilities — current	—		3,480
Interest rate swaps	Derivative liabilities — non-current	—		4,251
Total derivatives designated as hedges		$	600	$	13,781
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,737	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		3,384
Total derivatives not designated as hedges		$	1,737	$	3,384

As of December 31, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	248	$	—
Commodity derivatives	Derivative assets — non-current	698		—
Commodity derivatives	Derivative liabilities — current	—		1,541
Commodity derivatives	Derivative liabilities — non-current	—		219
Interest rate swaps	Derivative liabilities — current	—		3,474
Interest rate swaps	Derivative liabilities — non-current	—		5,614
Total derivatives designated as hedges		$	946	$	10,848
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	662	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		—
Commodity derivatives	Derivative liabilities — non-current	—		6,732
Total derivatives not designated as hedges		$	662	$	6,732

As of June 30, 2013
	Balance Sheet Location	Fair Value of Asset Derivatives		Fair Value of Liability Derivatives
Derivatives designated as hedges:
Commodity derivatives	Derivative assets — current	$	1,225	$	—
Commodity derivatives	Derivative assets — non-current	1,651		—
Commodity derivatives	Derivative liabilities — current	—		889
Commodity derivatives	Derivative liabilities — non-current	—		41
Interest rate swaps	Derivative liabilities — current	—		6,965
Interest rate swaps	Derivative liabilities — non-current	—		12,384
Total derivatives designated as hedges		$	2,876	$	20,279
Derivatives not designated as hedges:
Commodity derivatives	Derivative assets — current	$	160	$	—
Commodity derivatives	Derivative assets — non-current	—		—
Commodity derivatives	Derivative liabilities — current	—		1,884
Commodity derivatives	Derivative liabilities — non-current	—		5,365
Interest rate swaps	Derivative liabilities — current	—		67,859
Interest rate swaps	Derivative liabilities — non-current	—		—
Total derivatives not designated as hedges		$	160	$	75,108

XML

Notes Payable and Current Maturities of Long-term Debt

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Notes Payable [Text Block]

NOTES PAYABLE AND CURRENT MATURITIES OF LONG-TERM DEBT

We had the following short-term debt outstanding in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit
Revolving Credit Facility	$	132,700	$	20,272	$	82,500	$	22,100	$	100,000	$	43,157

Revolving Credit Facility

On May 29, 2014, we amended our $500 million corporate Revolving Credit Facility agreement to extend the term through May 29, 2019. This facility is substantially similar to the former agreement, which includes an accordion feature that allows us, with the consent of the administrative agent and issuing agents, to increase the capacity of the facility to $750 million. Borrowings continue to be available under a base rate or various Eurodollar rate options. The interest costs associated with the letters of credit or borrowings and the commitment fee under the Revolving Credit Facility are determined based upon our most favorable Corporate credit rating from S&P and Moody’s for our unsecured debt. Based on our credit ratings, the margins for base rate borrowings, Eurodollar borrowings and letters of credit were 0.125%, 1.125% and 1.125%, respectively, from May 29, 2014 through June 30, 2014; a reduction of 0.25% for each method of borrowing as compared to the previous arrangement. Borrowings under the facility are primarily Eurodollar based. A commitment fee is charged on the unused amount of the Revolving Credit Facility and was 0.175% based on our credit rating, a reduction of 0.025% compared to the prior arrangement.

Current Maturities Of Long-Term Debt

As of June 30, 2014, our Corporate term loan due June 19, 2015, for $275 million has been re-classified to Current maturities of long-term debt from Long-term debt, net of current maturities.

Debt Covenants

Our Revolving Credit Facility and our Term Loan require compliance with the following financial covenant at the end of each quarter:

	As of June 30, 2014	Covenant Requirement
Recourse Leverage Ratio	54%	Less than	65%

As of June 30, 2014, we were in compliance with this covenant.

XML

Risk Management Activities (Notes)

6 Months Ended

Jun. 30, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Risk Management Activities

RISK MANAGEMENT ACTIVITIES

Our activities in the regulated and non-regulated energy sectors expose us to a number of risks in the normal operation of our businesses. Depending on the activity, we are exposed to varying degrees of market risk and credit risk. To manage and mitigate these identified risks, we have adopted the Black Hills Corporation Risk Policies and Procedures as discussed in our 2013 Annual Report on Form 10-K.

Market Risk

Market risk is the potential loss that might occur as a result of an adverse change in market price or rate. We are exposed to the following market risks including, but not limited to:

• Commodity price risk associated with our natural long position in crude oil and natural gas reserves and production; and our fuel procurement for certain of our gas-fired generation assets; and

• Interest rate risk associated with our variable rate debt.

Credit Risk

Credit risk is the risk of financial loss resulting from non-performance of contractual obligations by a counterparty.

For production and generation activities, we attempt to mitigate our credit exposure by conducting business primarily with high credit quality entities, setting tenor and credit limits commensurate with counterparty financial strength, obtaining master netting agreements, and mitigating credit exposure with less creditworthy counterparties through parental guarantees, prepayments, letters of credit, and other security agreements.

We perform ongoing credit evaluations of our customers and adjust credit limits based upon payment history and the customer’s current creditworthiness, as determined by review of their current credit information. We maintain a provision for estimated credit losses based upon historical experience and any specific customer collection issue that is identified.

As ofJune 30, 2014, our credit exposure included a $0.5 million exposure to a non-investment grade energy marketing company. The remainder of our credit exposure was concentrated primarily among retail utility customers, investment grade rated companies, cooperative utilities and federal agencies. Our derivative and hedging activities recorded in the accompanying Condensed Consolidated Balance Sheets, Condensed Consolidated Statements of Income (Loss) and Condensed Consolidated Statements of Comprehensive Income (Loss) are detailed below and in Note 9.

Oil and Gas

We produce natural gas and crude oil through our exploration and production activities. Our natural long positions, or unhedged open positions, result in commodity price risk and variability to our cash flows.

To mitigate commodity price risk and preserve cash flows, we primarily use OTC swaps, exchange traded futures and related options to hedge portions of our crude oil and natural gas production. We elect hedge accounting on these instruments. These transactions were designated at inception as cash flow hedges, documented under accounting standards for derivatives and hedging, and initially met prospective effectiveness testing. Effectiveness of our hedging position is evaluated at least quarterly.

The derivatives were marked to fair value and were recorded as Derivative assets or Derivative liabilities on the accompanying Condensed Consolidated Balance Sheets. The effective portion of the gain or loss on these derivatives for which we have elected cash flow hedge accounting is reported in AOCI in the accompanying Condensed Consolidated Balance Sheets and the ineffective portion, if any, is reported in Revenue in the accompanying Condensed Consolidated Statements of Income (Loss).

The contract or notional amounts, terms of our commodity derivatives, and the derivative balances for our Oil and Gas segment reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps		Crude Oil Futures, Swaps and Options		Natural Gas Futures and Swaps
Notional (a)	424,500		9,265,000		412,500		7,082,500		520,500		10,712,500
Maximum terms in months (b)	1		1		3		1		6		1
Derivative assets, current	$	—	$	—	$	55	$	—	$	610	$	293
Derivative assets, non-current	$	—	$	—	$	—	$	—	$	—	$	—
Derivative liabilities, current	$	—	$	—	$	—	$	—	$	130	$	276
Derivative liabilities, non-current	$	—	$	—	$	—	$	—	$	—	$	—

__________

(a) Crude oil in Bbls, natural gas in MMBtus.

(b) Refers to the term of the derivative instrument. Assets and liabilities are classified as current/non-current based on the term of the hedged transaction and the corresponding settlement of the derivative instrument.

A $3.4 million loss is included in AOCI at June 30, 2014, and would be realized over the next 12 months if market prices remained equal to June 30, 2014 prices. Future realized gains or losses fluctuate with market prices.

Utilities

The operations of our utilities, including natural gas sold by our Gas Utilities and natural gas used for Electric Utility generation plants or those plants under PPAs where our Electric Utilities must provide the generation fuel (tolling agreements), expose our utility customers to volatility in natural gas prices. Therefore, as allowed or required by state utility commissions, we have entered into commission-approved hedging programs utilizing natural gas futures, options and basis swaps to reduce our customers’ underlying exposure to these fluctuations. These transactions are considered derivatives, and in accordance with accounting standards for derivatives and hedging, mark-to-market adjustments are recorded as Derivative assets or Derivative liabilities on the accompanying Condensed Consolidated Balance Sheets, net of balance sheet offsetting as permitted by GAAP. Unrealized and realized gains and losses, as well as option premiums and commissions on these transactions are recorded as Regulatory assets or Regulatory liabilities in the accompanying Condensed Consolidated Balance Sheets in accordance with state commission guidelines. When the related costs are recovered through our rates, the hedging activity is recognized in the Condensed Consolidated Statements of Income (Loss).

The contract or notional amounts and terms of the natural gas derivative commodity instruments held at our Utilities were as follows, as of:

	June 30, 2014		December 31, 2013		June 30, 2013
	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)	Notional (MMBtus)	Maximum Term (months)
Natural gas futures purchased	16,240,000	78	17,930,000	84	13,330,000	77
Natural gas options purchased	3,980,000	9	3,890,000	8	2,850,000	5
Natural gas basis swaps purchased	13,415,000	66	14,785,000	60	10,650,000	66

We had the following derivative balances related to the hedges in our Utilities reflected in our Condensed Consolidated Balance Sheets as of (in thousands):

	June 30, 2014		December 31, 2013		June 30, 2013
Derivative assets, current	$	1,737	$	662	$	—
Derivative assets, non-current	$	—	$	—	$	—
Derivative liabilities, non-current	$	—	$	—	$	—
Net unrealized (gain) loss included in Regulatory assets or Regulatory liabilities	$	3,561	$	7,567	$	8,450

Financing Activities

We entered into floating-to-fixed interest rate swap agreements to reduce our exposure to interest rate fluctuations associated with our floating rate debt obligations. The contract or notional amounts, terms of our interest rate swaps and the interest rate swaps balances reflected on the Condensed Consolidated Balance Sheets were as follows (dollars in thousands) as of:

	June 30, 2014			December 31, 2013			June 30, 2013
	Interest Rate Swaps (a)			Interest Rate Swaps (a)			Interest Rate Swaps (b)			De-designated Interest Rate Swaps (c)
Notional	$	75,000		$	75,000		$	150,000		$	250,000
Weighted average fixed interest rate	4.97		%	4.97		%	5.04		%	5.67		%
Maximum terms in years	2.5			3.0			3.5			0.5
Derivative liabilities, current	$	3,480		$	3,474		$	6,965		$	61,899
Derivative liabilities, non-current	$	4,251		$	5,614		$	12,384		$	—

__________

(a) These swaps are designated to borrowings on our Revolving Credit Facility, and are priced using three-month LIBOR, matching the floating portion of the related debt.

(b) At June 30, 2013, $75 million of these interest rate swaps were designated to borrowings on our Revolving Credit Facility and $75 million were designated to borrowings on our project financing debt at Black Hills Wyoming. These swaps are priced using three-month LIBOR, matching the floating portion of the related debt. The portion of the swaps that were designated to Black Hills Wyoming were settled during the fourth quarter of 2013 upon repayment of the Black Hills Wyoming project financing.

(c) These swaps were settled during the fourth quarter of 2013.

Based on June 30, 2014, market interest rates and balances related to our interest rate swaps, a loss of approximately$3.5 millionwould be realized, reported in pre-tax earnings and reclassified from AOCI during the next 12 months.Estimated and actual realized gains or losses will change during future periods as market interest rates change.

Cash Flow Hedges

The impacts of cash flow hedges on our Condensed Consolidated Statements of Income (Loss) were as follows (in thousands):

Three Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(337	)	Interest expense	$	(926	)		$	—
Commodity derivatives	(2,737		)	Revenue	(1,251		)		—
Total	$	(3,074	)		$	(2,177	)		$	—

Three Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,067	Interest expense	$	(1,820	)		$	—
Commodity derivatives	4,985		Revenue	(28		)		—
Total	$	6,052		$	(1,848	)		$	—

Six Months Ended June 30, 2014
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)			Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	(429	)	Interest expense	$	(1,820	)		$	—
Commodity derivatives	(6,209		)	Revenue	(1,562		)		—
Total	$	(6,638	)		$	(3,382	)		$	—

Six Months Ended June 30, 2013
Derivatives in Cash Flow Hedging Relationships	Amount of Gain/(Loss) Recognized in AOCI Derivative (Effective Portion)		Location of Gain/(Loss) Reclassified from AOCI into Income (Effective Portion)	Amount of Reclassified Gain/(Loss) from AOCI into Income (Effective Portion)			Location of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)	Amount of Gain/(Loss) Recognized in Income on Derivative (Ineffective Portion)
Interest rate swaps	$	1,048	Interest expense	$	(3,616	)		$	—
Commodity derivatives	2,226		Revenue	1,064				—
Total	$	3,274		$	(2,552	)		$	—

XML

Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2014

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments [Text Block]

FAIR VALUE OF FINANCIAL INSTRUMENTS

The estimated fair values of our financial instruments, excluding derivatives which are presented in Note 9, were as follows (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Carrying Amount		Fair Value		Carrying Amount		Fair Value		Carrying Amount		Fair Value
Cash and cash equivalents (a)	$	14,697	$	14,697	$	7,841	$	7,841	$	30,633	$	30,633
Restricted cash and equivalents (a)	$	2	$	2	$	2	$	2	$	7,279	$	7,279
Notes payable (a)	$	132,700	$	132,700	$	82,500	$	82,500	$	100,000	$	100,000
Long-term debt, including current maturities (b)	$	1,396,950	$	1,578,756	$	1,396,948	$	1,491,422	$	1,214,066	$	1,323,543

__________

(a) Carrying value approximates fair value due to either the short-term length of maturity or variable interest rates that approximate prevailing market rates, and therefore is classified in Level 1 in the fair value hierarchy.

(b) Long-term debt is valued based on observable inputs available either directly or indirectly for similar liabilities in active markets and therefore is classified in Level 2 in the fair value hierarchy.

XML

Guarantees (Tables)

6 Months Ended

Jun. 30, 2014

Guarantees [Abstract]

Schedule of Guarantor Obligations [Table Text Block]

We had the following guarantees in place (in thousands):

	Maximum Exposure at
Nature of Guarantee	June 30, 2014		Expiration
Indemnification for subsidiary reclamation/surety bonds (1)	$	65,744	Ongoing

_______________________

(1) We have guarantees in place for reclamation and surety bonds for our subsidiaries. The guarantees were entered into in the normal course of business. To the extent liabilities are incurred as a result of activities covered by the surety bonds, such liabilities are included in our Condensed Consolidated Balance Sheets.

During the second quarter, guarantees of Black Hills Utility Holdings’ payment obligations up to $70 million arising from commodity transactions for natural gas supply were removed, primarily due to improvement of the corporate credit rating, as well as the conversion of certain guarantees to letters of credit.

XML

Supplemental Disclosure of Cash Flow Information (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Non-cash Investing and Financing Activities from Continuing Operations [Abstract]
Property, plant and equipment acquired wtih accrued liabilities	$ 40,611	$ 45,000
Increase (decrease) in capitalized assets associated with asset retirement obligations	(2,785)	0
Cash (paid) refunded during the period for continuing operations [Abstract]
Interest (net of amounts capitalized)	(35,009)	(44,191)
Income taxes, net	$ (396)	$ (5,406)

XML

Guarantees

6 Months Ended

Jun. 30, 2014

Guarantees [Abstract]

Guarantees [Text Block]

GUARANTEES

We have entered into various agreements providing financial or performance assurance to third parties on behalf of certain of our subsidiaries. The agreements include indemnification for reclamation and surety bonds.

We had the following guarantees in place (in thousands):

	Maximum Exposure at
Nature of Guarantee	June 30, 2014		Expiration
Indemnification for subsidiary reclamation/surety bonds (1)	$	65,744	Ongoing

_______________________

(1) We have guarantees in place for reclamation and surety bonds for our subsidiaries. The guarantees were entered into in the normal course of business. To the extent liabilities are incurred as a result of activities covered by the surety bonds, such liabilities are included in our Condensed Consolidated Balance Sheets.

During the second quarter, guarantees of Black Hills Utility Holdings’ payment obligations up to $70 million arising from commodity transactions for natural gas supply were removed, primarily due to improvement of the corporate credit rating, as well as the conversion of certain guarantees to letters of credit.

XML

Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share Reconciliation [Table Text Block]

A reconciliation of share amounts used to compute Earnings (loss) per share in the accompanying Condensed Consolidated Statements of Income (loss) is as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2014		2013		2014		2013
Net income (loss) available for common stock	$	19,820	$	30,518	$	67,938	$	73,715
Weighted average shares - basic	44,399		44,172		44,365		44,113
Dilutive effect of:
Equity compensation	189		240		206		250
Weighted average shares - diluted	44,588		44,412		44,571		44,363

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following outstanding securities were not included in the computation of diluted earnings per share as their effect would have been anti-dilutive (in thousands):

	Three Months Ended June 30,		Six Months Ended June 30,
	2014	2013	2014	2013
Equity compensation	81	28	63	34
Anti-dilutive shares	81	28	63	34

XML

Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	$ 17,886	$ 23,369	$ 35,746	$ 47,041
Revenue	283,237	279,826	743,406	660,497
Utilities - Operating and Maintenance	66,074	64,977	137,301	130,667
Non-regulated energy operations and maintenance	21,350	20,890	43,682	42,219
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	30,471	46,134	103,955	110,994
Income tax benefit (expense)	(10,651)	(15,616)	(36,017)	(37,193)
Cash Flow Hedging [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	2,177	1,848	3,382	2,552
Income tax benefit (expense)	(774)	(647)	(1,199)	(883)
Net income (loss) available for common stock	1,403	1,201	2,183	1,669
Cash Flow Hedging [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Interest Rate Contract [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Interest expense	926	1,820	1,820	3,616
Cash Flow Hedging [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member] | Commodity Contract [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Revenue	1,251	28	1,562	(1,064)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Cost (Credit) [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Utilities - Operating and Maintenance	(25)	(31)	(51)	(62)
Non-regulated energy operations and maintenance	(84)	(32)	(71)	(64)
Accumulated Defined Benefit Plans Adjustment, Net Unamortized Gain (Loss) [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Utilities - Operating and Maintenance	158	421	315	842
Non-regulated energy operations and maintenance	101	274	186	548
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification Out Of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	150	632	379	1,264
Income tax benefit (expense)	(52)	(268)	(133)	(443)
Net income (loss) available for common stock	$ 98	$ 364	$ 246	$ 821

XML

Earnings Per Share Anti-dilutive shares (Details) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Shares	81	28	63	34
Equity compensation [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Shares	81	28	63	34

XML

Condensed Consolidated Balance Sheets (unaudited) Parantheticals (USD $)	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Common Stock, Par Per Share	$ 1.00	$ 1.00	$ 1.00
Common Stock, Shares, Issued	44,682,885	44,550,239	44,516,472
Treasury Stock, Shares	40,951	50,877	42,480
Common Stock, Shares Authorized	100,000,000	100,000,000	100,000,000
Common Stock, Shares, Outstanding	44,641,934	44,499,362	44,473,992

XML

Regulatory Accounting

6 Months Ended

Jun. 30, 2014

Regulatory Assets and Liabilities Disclosure [Abstract]

Regulatory Accounting [Text Block]

REGULATORY ACCOUNTING

We had the following regulatory assets and liabilities (in thousands):

	Maximum	As of		As of		As of
	Amortization (in years)	June 30, 2014		December 31, 2013		June 30, 2013
Regulatory assets
Deferred energy and fuel cost adjustments - current (a)(d)	1	$	29,605	$	16,775	$	15,951
Deferred gas cost adjustments and natural gas price derivatives (a)(d)	7	39,040		12,366		13,090
AFUDC (b)	45	12,468		12,315		12,456
Employee benefit plans (c)	13	65,874		67,059		115,379
Environmental (a)	subject to approval	1,314		1,800		1,798
Asset retirement obligations (a)	44	3,278		3,266		3,257
Bond issue cost (a)	24	3,347		3,419		3,489
Renewable energy standard adjustment (a)	5	14,501		14,186		14,694
Flow through accounting (c)	35	22,754		20,916		17,995
Other regulatory assets (a)	15	10,780		10,546		8,795
		$	202,961	$	162,648	$	206,904
Regulatory liabilities
Deferred energy and gas costs (a)	1	$	6,490	$	11,708	$	22,340
Employee benefit plans (c)	13	34,356		34,431		60,214
Cost of removal (a)	44	70,841		64,970		59,461
Other regulatory liabilities (c)	25	8,603		9,047		7,548
		$	120,290	$	120,156	$	149,563

__________

(a) Recovery of costs, but we are not allowed a rate of return.

(b) In addition to recovery of costs, we are allowed a rate of return.

(c) In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base, respectively.

(d) Our deferred energy, fuel cost, and gas cost adjustments represent the cost of electricity and gas delivered to our electric and gas utility customers that is either higher or lower than current rates and will be recovered or refunded in future rates. Increases in the current year balances as of June 30, 2014 are primarily due to higher natural gas prices driven by demand and market conditions during our peak winter heating season. Our electric and gas utilities file periodic quarterly, semi-annual, and/or annual filings to recover these costs based on the respective cost mechanisms approved by their applicable state utility commissions.

XML

Commitments and Contingencies - Dividend Restrictions (Details) (Utilities Group [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2014
Utilities Group [Member]
Related Party Transaction [Line Items]
Restricted Net Assets for Subsidiaries	$ 141

XML

Notes Payable and Current Maturities of Long-term Debt (Tables)

6 Months Ended

Jun. 30, 2014

Debt Disclosure [Abstract]

Schedule of Short-term Debt [Table Text Block]

We had the following short-term debt outstanding in the accompanying Condensed Consolidated Balance Sheets (in thousands) as of:

	June 30, 2014				December 31, 2013				June 30, 2013
	Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit		Balance Outstanding		Letters of Credit
Revolving Credit Facility	$	132,700	$	20,272	$	82,500	$	22,100	$	100,000	$	43,157

Credit Facility and Short Term Debt Covenants [Table Text Block]

Our Revolving Credit Facility and our Term Loan require compliance with the following financial covenant at the end of each quarter:

	As of June 30, 2014	Covenant Requirement
Recourse Leverage Ratio	54%	Less than	65%

XML

Regulatory Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Dec. 31, 2013		Jun. 30, 2013
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets	$ 202,961		$ 162,648		$ 206,904
Regulatory Liabilities	120,290		120,156		149,563
Deferred energy and gas costs
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities Amortization Period (in years)	P1Y
Regulatory Liabilities	6,490	[1]	11,708	[1]	22,340	[1]
Employee benefit plans
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities Amortization Period (in years)	P13Y
Regulatory Liabilities	34,356	[2]	34,431	[2]	60,214	[2]
Cost of removal
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities Amortization Period (in years)	P44Y
Regulatory Liabilities	70,841	[1]	64,970	[1]	59,461	[1]
Other regulatory liabilities
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Liabilities Amortization Period (in years)	P25Y
Regulatory Liabilities	8,603	[2]	9,047	[2]	7,548	[2]
Deferred energy and fuel cost adjustments - current
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets	29,605	[1],[3]	16,775	[1],[3]	15,951	[1],[3]
Deferred gas cost adjustments and natural gas price derivatives
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P7Y
Regulatory Assets	39,040	[1],[3]	12,366	[1],[3]	13,090	[1],[3]
Allowance For Funds Used During Construction
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P45Y
Regulatory Assets	12,468	[4]	12,315	[4]	12,456	[4]
Employee benefit plans
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P13Y
Regulatory Assets	65,874	[2]	67,059	[2]	115,379	[2]
Environmental
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	subject to approval
Regulatory Assets	1,314	[1]	1,800	[1]	1,798	[1]
Asset retirement obligations
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P44Y
Regulatory Assets	3,278	[1]	3,266	[1]	3,257	[1]
Bond issue cost
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P24Y
Regulatory Assets	3,347	[1]	3,419	[1]	3,489	[1]
Renewable energy standard adjustment
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P5Y
Regulatory Assets	14,501	[1]	14,186	[1]	14,694	[1]
Flow through accounting
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P35Y
Regulatory Assets	22,754	[2]	20,916	[2]	17,995	[2]
Other regulatory assets
Schedule Of Regulatory Assets And Liabilities [Line Items]
Regulatory Assets Amortization Period (in years)	P15Y
Regulatory Assets	$ 10,780	[1]	$ 10,546	[1]	$ 8,795	[1]

[1] Recovery of costs, but we are not allowed a rate of return.

[2] In addition to recovery or repayment of costs, we are allowed a return on a portion of this amount or a reduction in rate base, respectively.

[3] Our deferred energy, fuel cost, and gas cost adjustments represent the cost of electricity and gas delivered to our electric and gas utility customers that is either higher or lower than current rates and will be recovered or refunded in future rates. Increases in the current year balances as of June 30, 2014 are primarily due to higher natural gas prices driven by demand and market conditions during our peak winter heating season. Our electric and gas utilities file periodic quarterly, semi-annual, and/or annual filings to recover these costs based on the respective cost mechanisms approved by their applicable state utility commissions.

[4] In addition to recovery of costs, we are allowed a rate of return.

XML

Commitments and Contingencies

6 Months Ended

Jun. 30, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

COMMITMENTS AND CONTINGENCIES

There have been no significant changes to commitments and contingencies from those previously disclosed in Note 18 of our Notes to the Consolidated Financial Statements in our 2013 Annual Report on Form 10-K except for those described below.

Bond Purchase Agreements

On June 30, 2014, Black Hills Power and Cheyenne Light entered into agreements to issue $160 million of first mortgage bonds to finance Cheyenne Prairie. Black Hills Power will issue $85 million of 4.43% coupon first mortgage bonds due October 20, 2044, and Cheyenne Light will issue $75 million of 4.53% coupon first mortgage bonds due October 20, 2044. The closing for the sale of the first mortgage bonds for both utilities is anticipated to be October 1, 2014, subject to satisfaction of customary closing conditions.

Natural Gas Delivery Agreement

In 2012, we entered into a ten-year gas gathering and processing contract for natural gas production from our properties in the Piceance Basin in Colorado, under which we pay a gathering fee per Mcf. The contract requires us to deliver a minimum of 20,000 Mcf per day. This agreement became effective in first quarter of 2014 upon completion of the processing infrastructure capable of handling the committed volumes. We believe that our reserves dedicated to the gathering system, and the projected volumes are adequate to materially satisfy our delivery commitments under this agreement.

Turbine Sale Agreement

On May 6, 2013, Black Hills Wyoming entered into an agreement to sell its 40 MW CTII natural-gas fired generating unit to the City of Gillette, Wyoming for approximately $22 million, upon expiration of the PPA with Cheyenne Light in August 2014. As part of the sale, Black Hills Wyoming will provide services to the City of Gillette through an economy energy PPA. The sale received FERC approval on July 14, 2014, and is expected to close by August 31, 2014.

Reimbursement Agreement

We have a reimbursement agreement in place with Wells Fargo on behalf of Cheyenne Light for the 2009A bonds of $10 million due in 2027 and the 2009B bonds of $7.0 million due in 2021. In the case of default, we hold the assumption of liability for drawings on Cheyenne Light’s Letter of Credit attached to these bonds.

Other Commitments

Construction of Cheyenne Prairie, a 132 MW natural gas-fired electric generating facility jointly owned by Cheyenne Light and Black Hills Power is expected to cost approximately$222 million. Construction is expected to be completed by September 30, 2014. As of June 30, 2014, committed contracts for equipment purchases and for construction were 100% and 98% complete, respectively.

Oil Creek Fire

On June 29, 2012, a forest and grassland fire occurred in the western Black Hills of Wyoming. A state fire investigator concluded that the fire was caused by the failure of a transmission structure owned, operated and maintained by Black Hills Power. On April 16, 2013, a lawsuit was filed in the United States District Court for the District of Wyoming, which forty-seven plaintiffs and the State of Wyoming have now joined, asserting claims for damages against Black Hills Power. The claims include allegations of negligence, negligence per se, common law nuisance, and trespass. In addition to claims for these compensatory damages, the lawsuit seeks recovery of punitive damages. Our investigation of the cause and origin of the fire is ongoing. We have denied and will vigorously defend all claims arising out of the fire, pending the completion of our investigation. We cannot predict the outcome of our investigation, the viability of alleged claims or the outcome of the litigation.

Civil litigation of this kind, however, is likely to lead to settlement negotiations, including negotiations prompted by pre-trial civil court procedures. We believe such negotiations would effect a settlement of all claims. Regardless of whether the litigation is determined at trial or through settlement, we expect to incur significant investigation, legal and expert services expenses associated with the litigation. We maintain insurance coverage to limit our exposure to losses due to civil liability claims, and related litigation expense. The deductible applicable to some types of claims arising out of this fire is $1.0 million. We expect this coverage to limit our exposure, and we will pursue recoveries to the maximum extent available under the policies. Based upon information currently available, we believe that a loss associated with settlement of pending claims is probable. Accordingly, as of June 30, 2014, we recorded a loss contingency liability related to these claims, and we recorded a receivable for costs we believe are reimbursable and probable of recovery under our insurance coverage. Both of these entries reflect our reasonable estimate of probable future litigation expense and settlement costs; we did not base these contingencies on any determination that it is probable we would be found liable for these claims were they to be litigated.

Given the uncertainty of litigation, however, a loss related to the fire, the litigation and related claims in excess of the loss we have determined to be probable is reasonably possible. However, we cannot reasonably estimate the amount of such possible loss because our investigation and review of damage claims documentation is ongoing, and there are significant factual and legal issues to be resolved. Further claims may be presented by these and other parties. While we have received claims seeking recovery for fire suppression, reclamation and rehabilitation costs, damage to fencing and other personal property, alleged injury to timber, grass or hay, livestock and related operations, and diminished value of real estate, currently totaling $50 million, we are not yet able, for the reasons described above, to reasonably estimate the amount of any reasonable possible losses in excess of the amount we have accrued. Based upon information currently available, however, management does not expect the outcome of the claims to have a material adverse effect upon our consolidated financial condition, results of operations or cash flows.

Dividend Restrictions

Our Revolving Credit Facility and other debt obligations contain restrictions on the payment of cash dividends upon a default or event of default. As of June 30, 2014, we were in compliance with these covenants.

Due to our holding company structure, substantially all of our operating cash flows are provided by dividends paid or distributions made by our subsidiaries. The cash to pay dividends to our stockholders is derived from these cash flows. As a result, certain statutory limitations or regulatory or financing agreements could affect the levels of distributions allowed to be made by our subsidiaries. The following restrictions on distributions from our subsidiaries existed at June 30, 2014:

• Our utilities are generally limited to the amount of dividends allowed to be paid to us as a utility holding company under the Federal Power Act and settlement agreements with state regulatory jurisdictions. As of June 30, 2014, the restricted net assets at our Utilities Group were approximately $141 million.