Wisconsin Energy Announces Second Quarter 2008 Earnings Release and Conference Call

MILWAUKEE, July 24 /PRNewswire-FirstCall/ — Wisconsin Energy Corporation (NYSE:WEC) will issue its second quarter 2008 earnings news release before the stock market opens on Thursday, July 31. A conference call for security analysts is scheduled for the same day at 1 p.m. Central time.

To listen to the presentation on the Web

Go to http://www.wisconsinenergy.com/. Click on the link for the “Second 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 on July 31 at 7:30 a.m. Central time.

To listen to the presentation on the telephone

United States: Dial toll free 800-289-0493 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 accessible through Aug. 7, 2008, at 888-203-1112. The confirmation code for both the live call and the replay is 5843245.

International: Dial 913-312-1452 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 accessible through Aug. 7, 2008, at 719-457-0820. The confirmation code for both the live call and the replay is 5843245.

Wisconsin Energy Corporation (NYSE:WEC) , 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/) has more than $11 billion of assets, approximately 5,000 employees and more than 50,000 stockholders of record.

First Call Analyst:
FCMN Contact:

Source: Wisconsin Energy Corporation

CONTACT: media, Rick James, +1-414-221-4444, or analysts, Colleen F.
Henderson, CFA, +1-414-221-2592, colleen.henderson@wisconsinenergy.com, both
of Wisconsin Energy Corporation

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