MGE Energy Inc Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Revenues:
Regulated electric revenues	$ 375,858	$ 360,729	$ 332,324
Regulated gas revenues	165,271	165,915	192,334
Nonregulated revenues	5,253	5,947	9,161
Total Operating Revenues	546,382	532,591	533,819
Operating Expenses:
Fuel for electric generation	50,819	41,947	36,879
Purchased power	64,085	71,239	85,098
Cost of gas sold	99,465	103,784	123,062
Other operations and maintenance	165,859	164,001	145,177
Depreciation and amortization	40,942	37,960	41,080
Other general taxes	17,344	17,058	17,858
Total Operating Expenses	438,514	435,989	449,154
Operating Income	107,868	96,602	84,665
Other income, net	9,214	11,093	8,096
Interest expense, net	(20,162)	(16,157)	(13,594)
Income before income taxes	96,920	91,538	79,167
Income tax provision	(35,992)	(33,820)	(28,170)
Net Income	$ 60,928	$ 57,718	$ 50,997
Earnings Per Share of Common Stock (basic and diluted)	$ 2.64	$ 2.50	$ 2.21
Dividends per share of common stock	$ 1.52	$ 1.49	$ 1.46
Average Shares Outstanding (basic and diluted)	23,114	23,114	23,070