WEC Energy (WEC) 11-K Annual report of employee stock purchases

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-86467 on Form S-8 of our report dated June 12, 2007 appearing in this Annual Report on Form 11-K of Wisconsin Energy Corporation Employee Retirement Savings Plan for the year ended December 31, 2006.

/s/Clifton Gunderson LLP

Milwaukee, Wisconsin
June 13, 2007