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.
Leonard Singh is the EVP and Chief Financial Officer and Chairman and President of Ameren Services of Ameren.
4,958 people are employed at Ameren.
Ameren is based in St. Louis, Missouri.
The NAICS codes for Ameren are [22121, 221, 2212, 22].
The SIC codes for Ameren are [493, 49].
Top Ameren Employees
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25+ -
Martin Lyons
President and Chief Executive Officer at Ameren
St. Louis, MO, US24 -
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Mark Lindgren
EVP, Corporate Communications and CHRO at Ameren
St. Louis, MO, US25+ -
Eric Seidler
SVP, Safety, Security and Operational Oversight at Ameren
St. Louis, MO, US25+ -
Luke Wollin
Senior Vice President at Ameren
St. Louis, MO, US25+
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