Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment - MGE Energy and MGE.

Property, plant, and equipment consisted of the following at December 31:

		MGE Energy				MGE
(In thousands)		2014		2013		2014		2013
Utility:
Electric	$	1,110,953	$	953,290	$	1,110,970	$	953,307
Gas		369,975		351,694		369,987		351,705
Total utility plant		1,480,928		1,304,984		1,480,957		1,305,012
Less: Accumulated depreciation and amortization		559,615		560,066		559,615		560,066
In-service utility plant, net		921,313		744,918		921,342		744,946
Nonregulated:
Nonregulated		313,152		311,742		312,314		310,745
Less: Accumulated depreciation and amortization		45,388		37,851		45,305		37,814
In-service nonregulated plant, net		267,764		273,891		267,009		272,931
Construction work in progress:
Utility construction work in progress		16,988		140,301		16,988		140,301
Nonregulated construction work in progress		2,041		1,114		2,041		1,114
Total property, plant, and equipment	$	1,208,106	$	1,160,224	$	1,207,380	$	1,159,292

MGE's utility plant is subject to the lien of its Indenture of Mortgage and Deed of Trust. As of December 31, 2014 and 2013, there was $1.2 million of bonds outstanding under that indenture. See Footnote 9 for further discussion of the mortgage indenture.

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

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