Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

Revenues disaggregated by revenue source were as follows:

		Three Months Ended				Six Months Ended
(In thousands)		June 30,				June 30,
Electric revenues		2018		2017		2018		2017
Residential	$	32,217	$	31,634	$	65,476	$	64,987
Commercial(a)		50,174		54,721		97,626		104,885
Industrial		4,630		4,516		7,525		8,731
Other-retail/municipal		8,527		9,661		16,814		18,682
Total retail		95,548		100,532		187,441		197,285
Sales to the market		2,795		1,050		4,829		2,022
Other revenues		454		562		924		991
Adjustments to revenues		270		162		264		332
Total electric revenues		99,067		102,306		193,458		200,630
Gas revenues
Residential		15,620		15,140		52,171		49,043
Commercial/Industrial(a)		8,206		7,842		33,158		30,890
Total retail		23,826		22,982		85,329		79,933
Gas transportation		1,053		991		2,189		2,341
Other revenues		101		108		227		233
Total gas revenues		24,980		24,081		87,745		82,507
Non-regulated energy revenues		215		76		691		149
Total Operating Revenue(a)	$	124,262	$	126,463		281,894	$	283,286

(a)In 2017, MGE had less than $0.1 million of revenues related to CNG vehicle fuel servicing.No revenue was recognized for fuel servicing by MGE Energy in 2017.