Madison Gas and Electric Company Consolidated Statements of Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Operating Revenues:
Regulated electric revenues	$ 119,836	$ 118,914	$ 310,176	$ 305,189
Regulated gas revenues	18,864	16,587	121,373	92,235
Nonregulated revenues	1,399	2,337	4,075	6,894
Total Operating Revenues	140,099	137,838	435,624	404,318
Operating Expenses:
Fuel for electric generation	13,950	16,395	34,520	36,727
Purchased power	21,981	18,102	61,237	54,962
Cost of gas sold	8,819	7,389	70,259	50,035
Other operations and maintenance	41,134	41,975	124,670	126,202
Depreciation and amortization	9,710	9,706	28,864	29,042
Other general taxes	4,605	4,383	14,049	13,937
Income tax provision	14,692	14,253	37,030	32,711
Total Operating Expenses	100,199	97,950	333,599	310,905
Operating Income	39,900	39,888	102,025	93,413
Other Income and Deductions:
Equity in earnings in ATC			7,045	6,764
Total Other Income and Deductions	3,750	2,856	9,770	7,975
Interest Expense:
Net Interest Expense	4,605	4,849	13,937	14,717
Net Income (Loss)	24,353	23,642	60,828	53,960
MGE [Member]
Operating Revenues:
Regulated electric revenues	119,836	118,914	310,176	305,189
Regulated gas revenues	18,864	16,587	121,373	92,235
Nonregulated revenues	1,399	2,337	4,075	6,894
Total Operating Revenues	140,099	137,838	435,624	404,318
Operating Expenses:
Fuel for electric generation	13,950	16,395	34,520	36,727
Purchased power	21,981	18,102	61,237	54,962
Cost of gas sold	8,819	7,389	70,259	50,035
Other operations and maintenance	40,990	41,766	124,133	125,320
Depreciation and amortization	9,710	9,706	28,864	29,042
Other general taxes	4,605	4,384	14,049	13,938
Income tax provision	13,798	13,669	34,237	30,273
Total Operating Expenses	113,853	111,411	367,299	340,297
Operating Income	26,246	26,427	68,325	64,021
Other Income and Deductions:
AFUDC - equity funds	852	514	2,178	978
Equity in earnings in ATC	2,340	2,280	7,045	6,764
Income tax provision	(880)	(587)	(2,802)	(2,555)
Other income, net	407	(77)	118	(207)
Total Other Income and Deductions	2,719	2,130	6,539	4,980
Income before interest expense	28,965	28,557	74,864	69,001
Interest Expense:
Interest on long-term debt	4,910	5,065	14,757	15,335
Other interest, net	5	25	(31)	(116)
AFUDC - borrowed funds	(281)	(209)	(718)	(398)
Net Interest Expense	4,634	4,881	14,008	14,821
Net Income Including Noncontrolling Interest	24,331	23,676	60,856	54,180
Less Net Income Attributable to Noncontrolling Interest, net of tax	(6,861)	(6,153)	(20,547)	(18,305)
Net Income (Loss)	$ 17,470	$ 17,523	$ 40,309	$ 35,875