Union Electric Company

Union Electric Company, known commercially as Ameren Missouri, operates as a regulated utility providing electricity services throughout Missouri, encompassing generation, transmission, and distribution. Its power generation portfolio is diverse, drawing from coal, nuclear, natural gas, hydroelectric, methane gas, and solar energy sources. Additionally, the company is engaged in the regulated distribution of natural gas. It caters to roughly 1.2 million electric customers and 100,000 natural gas customers across a vast 24,000 square-mile territory in central and eastern Missouri. Established in 1881, the company maintains its headquarters in St. Louis, Missouri, and functions as a subsidiary of Ameren Corporation.