ST. LOUIS, April 11 /PRNewswire-FirstCall/ -- At 10:15 a.m. Central time today, April 11, Marty Lyons, senior vice president and chief accounting officer of Ameren Corporation (NYSE: AEE), will give a presentation to investors at the Berenson & Co./Wall St. Access Midwest Utility Seminar in Chicago, Ill.

Lyons' presentation will be available on a live audio Webcast beginning at 10:15 a.m. Central time via a link in the Investors section of Ameren's Web site, http://www.ameren.com. The Webcast will be archived at this site for one year.

With assets of $21 billion, Ameren serves approximately 2.4 million electric customers and nearly 1 million natural gas customers in a 64,000 square mile area of Missouri and Illinois. Ameren owns a diverse mix of electric generating plants strategically located in its Midwest market with a generating capacity of more than 16,400 megawatts.

SOURCE: Ameren Corporation

CONTACT: Media, Tim Fox, +1-314-554-3120, or Analysts, Bruce
Steinke, +1-314-554-2574, both of Ameren Corporation
Web site: http://www.ameren.com