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Investment in Transmission Affiliates | 12 Months Ended
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Dec. 31, 2021
Equity Method Investments and Joint Ventures [Abstract] |
INVESTMENT IN TRANSMISSION AFFILATES | INVESTMENT IN TRANSMISSION AFFILIATES We own approximately 60% of ATC, a for-profit, transmission-only company regulated by the FERC for cost of service and certain state regulatory commissions for routing and siting of transmission projects. We also own approximately 75% of ATC Holdco, a separate entity formed in December 2016 to invest in transmission-related projects outside of ATC's traditional footprint. ATC's corporate manager has an eleven-member board of directors, and ATC Holdco's corporate manager has a four-member board of directors. We have one representative on each board. Each member of the board has only one vote. The following tables provide a reconciliation of the changes in our investments in ATC and ATC Holdco:
|  | 2021
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at January 1 |  | $ | 1,733.5 |  |  | $ | 30.8 |  |  | $ | 1,764.3 |
Add: Earnings (loss) from equity method investment |  | 166.4 |  |  | (8.3) |  |  | 158.1 |
Less: Distributions |  | 133.0 |  |  | — |  |  | 133.0 |
Balance at December 31 |  | $ | 1,766.9 |  |  | $ | 22.5 |  |  | $ | 1,789.4 |
|  | 2020
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at January 1 |  | $ | 1,684.7 |  |  | $ | 36.1 |  |  | $ | 1,720.8 |
Add: Earnings from equity method investment |  | 174.3 |  |  | 1.5 |  |  | 175.8 |
Add: Capital contributions |  | 21.2 |  |  | — |  |  | 21.2 |
Less: Distributions |  | 146.7 |  |  | — |  |  | 146.7 |
Less: Return of capital |  | — |  |  | 6.8 |  |  | 6.8 |
Balance at December 31 |  | $ | 1,733.5 |  |  | $ | 30.8 |  |  | $ | 1,764.3 |
|  | 2019
(in millions) |  | ATC |  | ATC Holdco |  | Total
Balance at January 1 |  | $ | 1,625.3 |  |  | $ | 40.0 |  |  | $ | 1,665.3 |
Add: Earnings (loss) from equity method investment |  | 132.8 |  |  | (5.2) |  |  | 127.6 |
Add: Capital contributions |  | 51.3 |  |  | 1.3 |  |  | 52.6 |
Less: Distributions |  | 124.7 |  |  | — |  |  | 124.7 |
Balance at December 31 |  | $ | 1,684.7 |  |  | $ | 36.1 |  |  | $ | 1,720.8 |
In November 2019 and May 2020, the FERC issued orders that addressed complaints related to ATC's allowed ROE. Due to the various outstanding petitions filed related to these orders, our financials continue to include a $39.1 million liability for potential future refunds that ATC may be required to provide, reducing our equity earnings from ATC. This liability reflects a 10.52% ROE for all periods covered by the complaints. We pay ATC for network transmission and other related services it provides. In addition, we provide a variety of operational, maintenance, and project management work for ATC, which is reimbursed by ATC. We are also required to initially fund the construction of transmission infrastructure upgrades needed for new generation projects. ATC owns these transmission assets and reimburses us for these costs when the new generation is placed in service. The following table summarizes our significant related party transactions with ATC during the years ended December 31:
(in millions) |  | 2021 |  | 2020 |  | 2019
Charges to ATC for services and construction |  | $ | 22.9 |  |  | $ | 27.5 |  |  | $ | 25.9 |
Charges from ATC for network transmission services |  | 361.0 |  |  | 350.5 |  |  | 348.1 |
Net refund from ATC related to FERC ROE orders |  | 7.3 |  |  | 10.7 |  |  | — |
As of December 31, 2021 and 2020, our balance sheets included the following receivables and payables for services provided to or received from ATC:
(in millions) |  | 2021 |  | 2020
Accounts receivable for services provided to ATC |  | $ | 2.0 |  |  | $ | 3.7 |
Accounts payable for services received from ATC |  | 30.2 |  |  | 29.3 |
Amounts due from ATC for transmission infrastructure upgrades (1) |  | 13.0 |  |  | 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. Summarized financial data for ATC is included in the tables below:
|  | Year Ended December 31
(in millions) |  | 2021 |  | 2020 |  | 2019
Income statement data |  |  |  |  |  |
Operating revenues |  | $ | 754.8 |  |  | $ | 758.1 |  |  | $ | 744.4 |
Operating expenses |  | 376.2 |  |  | 372.5 |  |  | 373.5 |
Other expense, net |  | 113.9 |  |  | 110.8 |  |  | 110.5 |
Net income |  | $ | 264.7 |  |  | $ | 274.8 |  |  | $ | 260.4 |
(in millions) |  | December 31, 2021 |  | December 31, 2020 |  |
Balance sheet data |  |  |  |  |  |
Current assets |  | $ | 89.8 |  |  | $ | 92.7 |  |  |
Noncurrent assets |  | 5,628.1 |  |  | 5,400.6 |  |  |
Total assets |  | $ | 5,717.9 |  |  | $ | 5,493.3 |  |  |
Current liabilities |  | $ | 436.9 |  |  | $ | 310.8 |  |  |
Long-term debt |  | 2,513.0 |  |  | 2,512.2 |  |  |
Other noncurrent liabilities |  | 422.0 |  |  | 378.2 |  |  |
Members' equity |  | 2,346.0 |  |  | 2,292.1 |  |  |
Total liabilities and members' equity |  | $ | 5,717.9 |  |  | $ | 5,493.3 |  |  |

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- Definition The entire disclosure for equity method investments and joint ventures. Equity method investments are investments that give the investor the ability to exercise significant influence over the operating and financial policies of an investee. Joint ventures are entities owned and operated by a small group of businesses as a separate and specific business or project for the mutual benefit of the members of the group. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -URI http://asc.fasb.org/topic&trid=2196965 + Details
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