Madison Gas and Electric Company Consolidated Statements of Income (Unaudited) (MGE [Member], USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
MGE [Member]
Operating Revenues:
Regulated electric revenues	$ 90,834	$ 87,438	$ 176,841	$ 169,432
Regulated gas revenues	25,062	20,290	102,499	96,837
Nonregulated revenues	1,363	1,354	2,524	2,456
Total Operating Revenues	117,259	109,082	281,864	268,725
Operating Expenses:
Fuel for electric generation	11,599	10,242	22,648	19,143
Purchased power	14,392	16,467	31,973	37,934
Cost of gas sold	13,052	9,792	63,999	62,476
Other operations and maintenance	40,369	38,464	79,604	79,375
Depreciation and amortization	10,357	9,481	20,373	18,703
Other general taxes	4,005	4,285	8,706	8,849
Income tax provision	6,666	5,765	16,557	12,103
Total Operating Expenses	100,440	94,496	243,860	238,583
Operating Income	16,819	14,586	38,004	30,142
Other Income and Deductions:
AFUDC-equity funds	116	67	203	125
Equity in earnings in ATC	2,170	2,096	4,267	4,282
Income tax provision	(950)	(823)	(1,756)	(2,777)
Other income, net	(274)	(209)	(161)	2,255
Total Other Income and Deductions	1,062	1,131	2,553	3,885
Income before interest expense	17,881	15,717	40,557	34,027
Interest Expense:
Interest on long-term debt	5,223	4,761	10,214	9,273
Other interest, net	(105)	(743)	(252)	(1,145)
AFUDC - borrowed funds	(48)	(26)	(83)	(49)
Net Interest Expense	5,070	3,992	9,879	8,079
Net Income Including Noncontrolling Interest	12,811	11,725	30,678	25,948
Less net income attributable to noncontrolling interest, net of tax	(5,992)	(4,900)	(11,925)	(9,996)
Net Income	$ 6,819	$ 6,825	$ 18,753	$ 15,952