We're Ameren Corporation (AEE), a St. Louis-based, Fortune 500 company that powers the quality of life for millions of people throughout Illinois and Missouri. Ameren Illinois provides electric distribution and transmission service, as well as natural gas distribution service, while Ameren Missouri provides vertically integrated electric service, with generating capacity of over 10,200 megawatts, and natural gas distribution service. Combined, we serve 2.4 million electric and more than 900,000 natural gas customers in a 64,000 square mile area. We're the largest electric utility in Missouri and the second largest in Illinois, and we're among the nation's largest investor-owned electric or gas utility.
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Ameren Questions
The Ameren annual revenue was $7.3 billion in 2026.
Patrick Smith Sr. is the Chairman and President, Ameren Illinois of Ameren.
4,645 people are employed at Ameren.
Ameren is based in St. Louis, Missouri.
The NAICS codes for Ameren are [22121, 2212, 221, 22].
The SIC codes for Ameren are [49, 493].
Top Ameren Employees
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Patrick Smith Sr.
Chairman and President, Ameren Illinois at Ameren
Collinsville, IL, US25+ -
Mark Birk
President and Chairman at Ameren
St. Louis, MO, US -
Martin Lyons
President and Chief Executive Officer at Ameren
St. Louis, MO, US25 -
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Sanford Williams
Chief Operating Engineer at Ameren
St. Louis, MO, US22 -
Eric Seidler
SVP Operations Shared Services at Ameren
St. Louis, MO, US25+ -
Luke Wollin
Senior Vice President at Ameren
St. Louis, MO, US25+ -
Stephen Lee
Vice President and Deputy General Counsel at Ameren
St. Louis, MO, US23
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