Exhibit 21.1

WISCONSIN ENERGY CORPORATION
SUBSIDIARIES AS OF DECEMBER 31, 2010

The following table includes the subsidiaries of Wisconsin Energy Corporation, a diversified holding company incorporated in the state of Wisconsin, as well as the percent of ownership, as of December 31, 2010:

		State of
		Incorporation	Percent
Subsidiary (a)		or Organization	Ownership
Wisconsin Electric Power Company		Wisconsin	100%
	ATC Management Inc.	Wisconsin	26.24%
	American Transmission Company LLC	Wisconsin	23.04%
	Bostco LLC	Wisconsin	100%
Wisconsin Gas LLC		Wisconsin	100%
ATC Holding LLC		Wisconsin	100%
	American Transmission Company LLC	Wisconsin	3.20%
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%
Wisvest LLC		Wisconsin	100%
Wispark LLC		Wisconsin	100%
	CenterPoint Wispark Land Company LLC	Wisconsin	32.95%
	2825 Four Mile Road LLC	Wisconsin	100%
Wisconsin Energy Capital Corporation		Wisconsin	100%

(a)	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, 2010.
	Indirectly owned subsidiaries are listed under the subsidiaries through which
	Wisconsin Energy Corporation holds ownership.