Investment in ATC and ATC Holdco (Tables)

3 Months Ended

Mar. 31, 2021

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments Financial Data

MGE Transco and MGEE Transco have accounted for their investments in ATC and ATC Holdco, respectively, under the equity method of accounting. Equity earnings from investments are recorded as "Other income" on the consolidated statements of income of MGE Energy. MGE Transco recorded the following amounts related to its investment in ATC:

		Three Months Ended
		March 31,
(In thousands)		2021		2020
Equity earnings from investment in ATC	$	2,420	$	2,266
Dividends from ATC		1,967		2,391
Capital contributions to ATC		-		178

ATC's summarized financial data is as follows:

		Three Months Ended
		March 31,
(In thousands)		2021		2020
Operating revenues	$	188,694	$	186,801
Operating expenses		(95,104)		(95,211)
Other income, net		378		375
Interest expense, net		(28,871)		(28,888)
Earnings before members' income taxes	$	65,097	$	63,077