To listen to the presentation on the Web

Go to http://www.wisconsinenergy.com/. Click on the link for the "First Quarter Earnings Release and Conference Call" and select "webcast audio" up to 15 minutes before 1 p.m. Central time.

A packet of detailed financial information will be available on the Wisconsin Energy Web site at 6 a.m. Central time on May 5, 2009.

To listen to the presentation on the telephone

United States: Dial toll free 888-271-8608 up to 15 minutes before 1 p.m. Central time. A replay of the audio portion of the presentation will be available approximately two hours following the conclusion of the presentation and will be accessible through May 12, 2009, at 888-203-1112. The confirmation code for both the live call and the replay is 2489282.

International: Dial 913-312-0979 up to 15 minutes before 1 p.m. Central time. A replay of the audio portion of the presentation will be available approximately two hours following the conclusion of the presentation and will be accessible through May 12, 2009, at 719-457-0820. The confirmation code for both the live call and the replay is 2489282.

Wisconsin Energy Corporation , based in Milwaukee, is one of the nation's premier energy companies, serving more than 1.1 million electric customers in Wisconsin and Michigan's Upper Peninsula and more than 1 million natural gas customers in Wisconsin. The company's principal utilities are We Energies and Edison Sault Electric. The company's non-utility businesses include renewable energy technology and real estate development.

Wisconsin Energy Corporation (http://www.wisconsinenergy.com/), a component of the S&P 500, has more than $12 billion of assets, approximately 5,000 employees and 48,000 stockholders of record.

Wisconsin Energy Corporation

CONTACT: News Media, Rick James, +1-414-221-4444, or Analysts, ColleenF. Henderson, CFA, +1-414-221-2592, colleen.henderson@wisconsinenergy.com,both of Wisconsin Energy Corporation

Web Site: http://www.wisconsinenergy.com/

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