- CEO
- Martin J. Lyons Jr.
- Full Time Employees
- 3,830
- Sector
- Utilities
- Industry
- Regulated Electric
- Address
- 1901 Chouteau Avenue Saint Louis MO United States of America 63103
- IPO Date
- May 11, 2012
- Business
- Union Electric Company, operating as Ameren Missouri, serves as a prominent rate-regulated utility engaged in electric generation, transmission, and distribution, alongside natural gas delivery, throughout central and eastern Missouri. Its diverse energy portfolio relies on a balanced blend of sources, including coal, nuclear, natural gas, hydroelectric, wind, and solar facilities, with a strong focus on transitioning to cleaner energy. The company supplies electricity to approximately 1.3 million customers and natural gas to about 135,000 customers across numerous counties and more than 500 communities, including the greater St. Louis metropolitan area. Recent initiatives include significant investments in new solar generation, such as 500 megawatts completed in late 2024, and continued expansion of grid modernization efforts to enhance reliability and support economic development. Ameren Missouri, a subsidiary of Ameren Corporation, remains dedicated to powering the quality of life for its customers with reliable and increasingly sustainable energy solutions, aiming for net-zero carbon emissions by 2045.