News Releases

Warner L. Baxter, Ameren Corporation (NYSE:AEE) executive vice president and chief financial officer, will participate in three separate panel discussions at the First Annual Citigroup Power, Gas and Utilities Conference, March 2-3. The conference and panels address critical topics for the utility industry. Live Webcasts of each panel discussion will be available through links in the Investors area of Ameren's Web site, www.ameren.com. Following are the dates, times and topics Baxter will discuss:

• March 2, 9:00 a.m. Eastern, 8:00 a.m. Central: "Effective Strategies for Managing Regulatory Uncertainty"

• March 2, 2:00 p.m. Eastern, 1:00 p.m. Central: "Environmental Compliance: How Do You Get an Edge?"

• March 3, 10:00 a.m. Eastern, 9:00 a.m. Central: "Coal-Fired Generation: Risks and Issues Other than Environmental Compliance"

The Webcasts can also be accessed directly at these dates and times at the following links:

•Effective Strategies for Managing Regulatory Uncertainty

•Environmental Compliance: How Do You Get an Edge?

•Coal- Fired Generation: Risks and Issues Other then Environmental Compliance

The Webcasts will be archived at these addresses for 30 days.

With assets of more than $18 billion, Ameren serves approximately 2.3 million electric customers and more than 900,000 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 15,200 megawatts.

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