MGE Energy Inc Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Operating Revenues:
Electric revenues	$ 99,282	$ 102,382		$ 194,149	$ 200,779
Gas revenues	24,980	24,081		87,745	82,507
Total Operating Revenues	124,262	126,463		281,894	283,286
Operating Expenses:
Fuel for electric generation	15,251	11,910		27,151	24,109
Purchased power	12,979	16,720		30,012	32,074
Cost of gas sold	9,562	9,231		49,188	45,015
Other operations and maintenance	43,453	44,880		87,846	88,644
Depreciation and amortization	13,872	13,275		27,495	26,234
Other general taxes	4,914	4,852		9,783	9,779
Total Operating Expenses	100,031	100,868		231,475	225,855
Operating Income	24,231	25,595		50,419	57,431
Other income, net	4,731	3,570	[1]	9,650	7,095	[1]
Interest expense, net	(4,783)	(4,886)		(9,522)	(9,780)
Income before income taxes	24,179	24,279		50,547	54,746
Income tax provision	(5,828)	(8,736)		(12,195)	(19,903)
Net Income	$ 18,351	$ 15,543		$ 38,352	$ 34,843
Earnings Per Share of Common Stock (basic and diluted)	$ 0.53	$ 0.45		$ 1.11	$ 1.01
Dividends per share of common stock	$ 0.323	$ 0.308		$ 0.645	$ 0.615
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.