Investment in ATC and ATC Holdco (Tables)

3 Months Ended

Mar. 31, 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
	March 31,
(In thousands)	2023		2022
Equity earnings from investment in ATC	$	2,583	$	2,478
Dividends received from ATC		2,206		2,001
Capital contributions to ATC		357		1,243

ATC's summarized financial data is as follows:

	Three Months Ended
	March 31,
(In thousands)	2023			2022
Operating revenues	$	200,426		$	190,999
Operating expenses		(99,076	)		(95,491	)
Other income, net		391			404
Interest expense, net		(32,910	)		(28,440	)
Earnings before members' income taxes	$	68,831		$	67,472