Investment in ATC and ATC Holdco (Tables)

6 Months Ended

Jun. 30, 2023

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)	2023		2022		2023		2022
Equity earnings from investment in ATC	$	2,599	$	2,592	$	5,182	$	5,070
Dividends received from ATC		2,042		1,958		4,248		3,959
Capital contributions to ATC		1,601		540		1,958		1,783

ATC's summarized financial data is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In thousands)	2023			2022			2023			2022
Operating revenues	$	203,776		$	191,605		$	404,202		$	382,604
Operating expenses		(101,517	)		(95,256	)		(200,593	)		(190,747	)
Other income, net		565			344			956			748
Interest expense, net		(33,504	)		(29,059	)		(66,414	)		(57,499	)
Earnings before members' income taxes	$	69,320		$	67,634		$	138,151		$	135,106