Equity Investments (Tables)

9 Months Ended

Sep. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Equity Method Investments (Table Text Block)

ALLETE’s Investment in ATC
Millions
Equity Investment Balance as of December 31, 2019	$141.6
Cash Investments	2.0
Equity in ATC Earnings (a)	16.7
Distributed ATC Earnings	(14.4)
Amortization of the Remeasurement of Deferred Income Taxes	0.9
Equity Investment Balance as of September 30, 2020	$146.8

(a)Equity in ATC Earnings includes $1.2 million of additional earnings resulting from the FERC’s May 21, 2020, order increasing ATC’s authorized return on equity to 10.52 percent including an incentive adder for participation in a regional transmission organization.