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Investments
12 Months Ended
Dec. 31, 2015
Investments Disclosure [Abstract]  
Investments

Investments - MGE Energy and MGE.

a. Equity Method Investments, Available for Sale Securities, and Other Investments.

MGE EnergyMGE
(In thousands)2015201420152014
Available for sale securities:
Cost basis$2,225$1,964$480$489
Gross unrealized gains59976540240
Gross unrealized losses(2)-(2)-
Fair value2,8222,729518729
Equity method investments:
ATC69,46667,67369,46667,673
Other1,1841,199--
Total equity method investments70,65068,87269,46667,673
Other investments159159--
Total$73,631$71,760$69,984$68,402

MGE Energy's and MGE's available for sale securities represent publicly traded securities and private equity investments in common stock of companies in various industries.

During the years ended December 31, 2015, 2014, and 2013, certain investments were liquidated. As a result of these liquidations, MGE Energy and MGE received the following:

MGE EnergyMGE
(In thousands)201520142013201520142013
Cash proceeds$19$38$39$19$-$16
Gain (loss) on sale1021210-(3)

b. ATC.

ATC owns and operates electric transmission facilities primarily in Wisconsin. MGE received an interest in ATC when it, like other Wisconsin electric utilities, contributed its electric transmission facilities to ATC as required by Wisconsin law. That interest is presently held by MGE Transco, which is jointly owned by MGE Energy and MGE.

MGE Transco has accounted for its investment in ATC under the equity method of accounting. For the years ended December 31, 2015, 2014, and 2013, MGE Transco recorded the following:

(In thousands)201520142013
Equity in earnings from investment in ATC$7,728$9,150$9,434
Dividends received from ATC6,6457,7407,404
Capital contributions to ATC7101,7751,420

At December 31, 2015 and 2014, MGE Transco held a 3.6% ownership interest in ATC. MGE Transco's investment balance is different from the amount of the underlying equity in the net assets of ATC. This difference is attributable to the allocation of certain tax impacts related to the initial asset transfer. On January 29, 2016, MGE Transco made a $0.5 million capital contribution to ATC.

At December 31, 2015 and 2014, MGE is the majority owner, and MGE Energy, the holding company, is the minority owner of MGE Transco. MGE Energy's proportionate share of the equity and net income of MGE Transco is classified within the MGE consolidated financial statements as noncontrolling interest.

In mid-2016, MGE is no longer expected to be the majority owner of MGE Transco. The change will have no effect on MGE Energy's consolidated financial statements; however, MGE Energy's proportionate share of the equity and net income of MGE Transco will be deconsolidated from MGE’s financial statements. See further discussion in Footnote 8.

ATC's summarized financial data for the years ended December 31, 2015, 2014, and 2013 is as follows:

(In thousands)
Income statement data for the year ended December 31,201520142013
Operating revenues$615,836$635,033$626,336
Operating expenses(319,321)(307,451)(295,069)
Other income1,176117831
Interest expense, net(97,250)(88,970)(84,484)
Earnings before members' income taxes$200,441$238,729$247,614
Balance sheet data as of December 31,201520142013
Current assets$80,520$66,410$80,715
Noncurrent assets3,957,5763,728,6753,509,517
Total assets$4,038,096$3,795,085$3,590,232
Current liabilities$330,248$313,065$381,467
Long-term debt1,800,0291,701,0001,550,000
Other noncurrent liabilities244,991163,818126,167
Members' equity1,662,8281,617,2021,532,598
Total members' equity and liabilities$4,038,096$3,795,085$3,590,232