INVESTMENT IN TRANSMISSION AFFILIATES (Tables)

3 Months Ended

Mar. 31, 2021

Investment in transmission affiliates

Schedule of changes to our investments in transmission affiliates

The following tables provide a reconciliation of the changes in our investments in ATC and ATC Holdco:

	Three Months Ended March 31, 2021
(in millions)	ATC		ATC Holdco		Total
Balance at beginning of period	$	1,733.5	$	30.8	$	1,764.3
Add: Earnings from equity method investment	41.7		0.9		42.6
Less: Distributions	33.4		—		33.4
Add: Other	0.1		—		0.1
Balance at end of period	$	1,741.9	$	31.7	$	1,773.6
	Three Months Ended March 31, 2020
(in millions)	ATC		ATC Holdco		Total
Balance at beginning of period	$	1,684.7	$	36.1	$	1,720.8
Add: Earnings from equity method investment	39.6		0.2		39.8
Add: Capital contributions	3.0		—		3.0
Less: Distributions	40.6		—		40.6
Less: Return of capital	—		5.3		5.3
Balance at end of period	$	1,686.7	$	31.0	$	1,717.7

ATC

Investment in transmission affiliates

Schedule of significant related party transactions with ATC

The following table summarizes our significant related party transactions with ATC:

	Three Months Ended March 31
(in millions)	2021		2020
Charges to ATC for services and construction	$	6.0	$	6.0
Charges from ATC for network transmission services	92.6		86.9

Schedule of receivables and payables with ATC

Our balance sheets included the following receivables and payables for services provided to or received from ATC:

(in millions)	March 31, 2021		December 31, 2020
Accounts receivable for services provided to ATC	$	2.4	$	3.7
Accounts payable for services received from ATC	30.3		29.3
Amounts due from ATC for transmission infrastructure upgrades (1)	5.3		4.6

(1)The transmission infrastructure upgrades were primarily related to WE's and WPS's construction of their new solar projects, Badger Hollow II and Badger Hollow I, respectively.

Schedule of summarized income statement data for ATC

Summarized financial data for ATC is included in the tables below:

	Three Months Ended March 31
(in millions)	2021		2020
Income statement data
Operating revenues	$	188.7	$	186.8
Operating expenses	95.1		95.2
Other expense, net	28.5		28.5
Net income	$	65.1	$	63.1

Schedule of summarized balance sheet data for ATC

(in millions)	March 31, 2021		December 31, 2020
Balance sheet data
Current assets	$	90.0	$	92.7
Noncurrent assets	5,431.8		5,400.6
Total assets	$	5,521.8	$	5,493.3
Current liabilities	$	420.1	$	310.8
Long-term debt	2,412.5		2,512.2
Other noncurrent liabilities	385.0		378.2
Members' equity	2,304.2		2,292.1
Total liabilities and members' equity	$	5,521.8	$	5,493.3