Union Electric Company

Operating as Ameren Missouri, Union Electric Company provides regulated utility services across Missouri. Its primary activities encompass the generation, transmission, and distribution of electricity, utilizing a varied mix of energy sources including coal, nuclear power, natural gas, hydroelectricity, methane gas, and solar. Furthermore, the company is involved in the regulated supply of natural gas to customers. It supplies electrical power to 1.2 million households and businesses, and natural gas to 100,000 customers, all within a 24,000 square-mile region spanning central and eastern Missouri. Founded in 1881 and headquartered in St. Louis, Missouri, Union Electric Company operates as a subsidiary of Ameren Corporation.