Exhibit 21.1
WEC ENERGY GROUP, INC.
SUBSIDIARIES AS OF DECEMBER 31, 2022
The following table includes the subsidiaries of WEC Energy Group, a diversified holding company incorporated in the state of Wisconsin, as well as the percent of ownership, as of December 31, 2022:
Subsidiary * | State of Incorporation or Organization | Percent Ownership | ||||||||||||
ATC Holding LLC | Wisconsin | 100% | ||||||||||||
American Transmission Company LLC | Wisconsin | 60.31% | ||||||||||||
ATC Development Manager, Inc. | Delaware | 74.73% | ||||||||||||
ATC Holdco LLC | Delaware | 75.17% | ||||||||||||
ATC Management Inc. | Wisconsin | 60.32% | ||||||||||||
Bluewater Natural Gas Holding, LLC | Delaware | 100% | ||||||||||||
BGS Kimball Gas Storage, LLC | Delaware | 100% | ||||||||||||
Bluewater Gas Storage, LLC | Delaware | 100% | ||||||||||||
Integrys Holding, Inc. | Wisconsin | 100% | ||||||||||||
Michigan Gas Utilities Corporation | Delaware | 100% | ||||||||||||
Minnesota Energy Resources Corporation | Delaware | 100% | ||||||||||||
Peoples Energy, LLC | Delaware | 100% | ||||||||||||
North Shore Gas Company | Illinois | 100% | ||||||||||||
Peoples Energy Ventures, LLC | Delaware | 100% | ||||||||||||
The Peoples Gas Light and Coke Company | Illinois | 100% | ||||||||||||
Wisconsin Public Service Corporation | Wisconsin | 100% | ||||||||||||
Wisconsin River Power Company | Wisconsin | 50% | ||||||||||||
Wisconsin Valley Improvement Company | Wisconsin | 27% | ||||||||||||
WPS Power Development, LLC | Wisconsin | 100% | ||||||||||||
WPS Visions, Inc. | Wisconsin | 100% | ||||||||||||
Upper Michigan Energy Resources Corporation | Michigan | 100% | ||||||||||||
W.E. Power, LLC | Wisconsin | 100% | ||||||||||||
Elm Road Generating Station Supercritical, LLC | Wisconsin | 100% | ||||||||||||
Elm Road Services, LLC | Wisconsin | 100% | ||||||||||||
Port Washington Generating Station, LLC | Wisconsin | 100% | ||||||||||||
WEC Business Services LLC | Delaware | 100% | ||||||||||||
WEC Infrastructure LLC | Delaware | 100% | ||||||||||||
Thunderhead Wind Energy Holdings LLC | Delaware | 90% | ||||||||||||
WEC Infrastructure Wind Holding I LLC | Delaware | 100% | ||||||||||||
Bishop Hill Energy III Holdings LLC | Delaware | 90% | ||||||||||||
Blooming Grove Wind Energy Center Holdings LLC | Delaware | 90% | ||||||||||||
Coyote Ridge Wind, LLC | Oregon | 80% | ||||||||||||
Upstream Wind Energy Holdings LLC | Delaware | 90% | ||||||||||||
WEC Infrastructure Wind Holding II LLC | Delaware | 100% | ||||||||||||
Jayhawk Wind, LLC | Delaware | 90% | ||||||||||||
Tatanka Ridge Wind, LLC | Delaware | 85% | ||||||||||||
WEC Investments, LLC | Delaware | 100% | ||||||||||||
Wisconsin Electric Power Company | Wisconsin | 100% | ||||||||||||
Wisconsin Energy Capital Corporation | Wisconsin | 100% | ||||||||||||
Wisconsin Gas LLC | Wisconsin | 100% | ||||||||||||
Wispark LLC | Wisconsin | 100% | ||||||||||||
Wisvest LLC | Wisconsin | 100% |
* Omits the names of certain subsidiaries, which if considered in the aggregate as a single subsidiary, would not constitute a "significant subsidiary" as of December 31, 2022. Indirectly owned subsidiaries are listed under the subsidiaries through which WEC Energy Group holds ownership.