Investments

9 Months Ended

Sep. 30, 2022

Schedule of Equity Method Investments [Line Items]

Investments

INVESTMENTS

Unconsolidated Equity Investments - Alliant Energy’s equity (income) loss from unconsolidated investments accounted for under the equity method of accounting for the three and nine months ended September 30 was as follows (in millions):

	Three Months		Nine Months
	2022	2021	2022	2021
ATC Holdings	($7)	($12)	($29)	($34)
Other	2	(1)	(8)	(13)
	($5)	($13)	($37)	($47)

Refer to Note 13(e) for discussion of a reduction in earnings recorded in the third quarter of 2022 related to a court decision, which is currently expected to reduce the base return on equity authorized for MISO transmission owners, including ATC.