Valuation and Qualifying Accounts

12 Months Ended

Dec. 31, 2011

Valuation and Qualifying Accounts Disclosure [Abstract]

Schedule II Valuation and Qualifying Accounts

Schedule II
MGE Energy, Inc. and Madison Gas and Electric Company
Valuation and Qualifying Accounts
			Additions
			(1)	(2)
		Balance at	Charged to	Charged	Net		Balance at
		beginning	costs and	to other	Accounts		end of
		of period	expenses	accounts	written off		period
Fiscal Year 2009:
Accumulated provision for uncollectibles	$	4,275,899	3,409,313	48,946	(3,491,823)	$	4,242,335
Fiscal Year 2010:
Accumulated provision for uncollectibles	$	4,242,335	2,805,311	49,500	(2,508,471)	$	4,588,675
Fiscal Year 2011:
Accumulated provision for uncollectibles	$	4,588,675	2,174,729	49,500	(2,712,571)	$	4,100,333