Investment in ATC and ATC Holdco (Tables)

6 Months Ended

Jun. 30, 2022

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments Financial Data

MGE Transco recorded the following amounts related to its investment in ATC:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
(In thousands)	2022		2021		2022		2021
Equity earnings from investment in ATC	$	2,592	$	2,413	$	5,070	$	4,833
Dividends received from ATC		1,958		1,933		3,959		3,900
Capital contributions to ATC		540		—		1,783		—

ATC's summarized financial data is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In thousands)	2022			2021			2022			2021
Operating revenues	$	191,605		$	185,900		$	382,604		$	374,594
Operating expenses		(95,256	)		(92,384	)		(190,747	)		(187,488	)
Other income, net		344			663			748			1,041
Interest expense, net		(29,059	)		(28,792	)		(57,499	)		(57,663	)
Earnings before members' income taxes	$	67,634		$	65,387		$	135,106		$	130,484