Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Revenues:
Electric revenues	$ 117,291	$ 110,127
Gas revenue	99,962	98,811
Total Operating Revenues	217,253	208,938
Operating Expenses:
Fuel for electric generation	13,807	13,485
Purchased power	15,386	12,543
Cost of gas sold	67,847	64,802
Other operations and maintenance	49,958	49,994
Depreciation and amortization	24,611	21,046
Other general taxes	5,610	5,205
Total Operating Expenses	177,219	167,075
Operating Income	40,034	41,863
Other income, net	5,355	6,972
Interest expense, net	(7,487)	(6,571)
Income before income taxes	37,902	42,264
Income tax provision	(6,824)	(7,844)
Net Income Including Noncontrolling Interest	31,078	34,420
Net Income	$ 31,078	$ 34,420
Earnings per share of Common Stock - Basic	$ 0.86	$ 0.95
Earnings per share of Common Stock - Diluted	0.86	0.95
Dividends per share of common stock	$ 0.408	$ 0.388
Weighted Average Shares Outstanding - Basic	36,163	36,163
Weighted Average Shares Outstanding - Diluted	36,180	36,171
MGE [Member]
Operating Revenues:
Electric revenues	$ 117,291	$ 110,127
Gas revenue	99,962	98,811
Total Operating Revenues	217,253	208,938
Operating Expenses:
Fuel for electric generation	13,807	13,485
Purchased power	15,386	12,543
Cost of gas sold	67,847	64,802
Other operations and maintenance	49,569	49,746
Depreciation and amortization	24,611	21,046
Other general taxes	5,610	5,205
Total Operating Expenses	176,830	166,827
Operating Income	40,423	42,111
Other income, net	2,907	3,519
Interest expense, net	(7,520)	(6,577)
Income before income taxes	35,810	39,053
Income tax provision	(6,167)	(7,000)
Net Income Including Noncontrolling Interest	29,643	32,053
Less Net Income Attributable to Noncontrolling Interest, net of tax	(5,520)	(4,756)
Net Income	$ 24,123	$ 27,297