Investment in ATC and ATC Holdco (Tables)

6 Months Ended

Jun. 30, 2024

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)	2024		2023		2024		2023
Equity earnings from investment in ATC	$	2,748	$	2,599	$	5,470	$	5,182
Dividends received from ATC		2,132		2,042		4,238		4,248
Capital contributions to ATC		1,070		1,601		1,785		1,958

ATC's summarized financial data is as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In thousands)	2024			2023			2024			2023
Operating revenues	$	218,222		$	203,776		$	430,150		$	404,202
Operating expenses		(109,197	)		(101,517	)		(214,039	)		(200,593	)
Other income, net		356			565			543			956
Interest expense, net		(36,040	)		(33,504	)		(71,458	)		(66,414	)
Earnings before members' income taxes	$	73,341		$	69,320		$	145,196		$	138,151