Ameren

Ameren Corporation is a public utility holding company based in St. Louis, Missouri, with a history dating back to 1881. It operates primarily through its subsidiaries, Ameren Missouri and Ameren Illinois, providing rate-regulated electric and natural gas generation, transmission, and distribution services. The company serves over 2.4 million electricity customers and approximately 900,000 natural gas customers across its service areas in Missouri and Illinois. Ameren generates electricity through a mix of coal, nuclear, natural gas, and renewable sources, including hydroelectric, methane gas, and solar energy. Its operations are structured into four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. Ameren's focus is on delivering reliable energy services while adhering to regulatory standards in the energy sector.