MGE Energy Inc Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017		Sep. 30, 2018	Sep. 30, 2017
Operating Revenues:
Electric revenues	$ 119,388	$ 120,761		$ 313,537	$ 321,540
Gas revenue	18,407	18,778		106,152	101,285
Total Operating Revenues	137,795	139,539		419,689	422,825
Operating Expenses:
Fuel for electric generation	16,793	15,829		43,944	39,938
Purchased power	13,024	15,984		43,036	48,058
Cost of gas sold	4,921	5,094		54,109	50,109
Other operations and maintenance	44,130	42,533		131,976	131,177
Depreciation and amortization	14,259	13,372		41,754	39,606
Other general taxes	4,870	4,730		14,653	14,509
Total Operating Expenses	97,997	97,542		329,472	323,397
Operating Income	39,798	41,997		90,217	99,428
Other income, net	4,330	4,943	[1]	13,980	12,038	[1]
Interest expense, net	(5,025)	(4,727)		(14,547)	(14,507)
Income before income taxes	39,103	42,213		89,650	96,959
Income tax provision	(9,597)	(15,584)		(21,792)	(35,487)
Net Income	$ 29,506	$ 26,629		$ 67,858	$ 61,472
Earnings Per Share of Common Stock (basic and diluted)	$ 0.85	$ 0.77		$ 1.96	$ 1.77
Dividends per share of common stock	$ 0.338	$ 0.323		$ 0.983	$ 0.938
Weighted Average Shares Outstanding (basic and diluted)	34,668	34,668		34,668	34,668

[1] Reflects retrospective application of new accounting pronouncement related to pension and other postretirement benefits, see Footnote 2 for further information.