Union Electric Company

Operating under the trade name Ameren Missouri, Union Electric Company serves as a regulated utility, managing the generation, transmission, and distribution of electricity throughout the state of Missouri. Its power portfolio is extensive, incorporating sources such as coal, nuclear, natural gas, hydroelectric, methane gas, and solar energy. The company also handles the regulated distribution of natural gas. Across a vast 24,000 square-mile service area in central and eastern Missouri, it delivers electricity to 1.2 million customers and natural gas to 100,000 customers. Established in 1881, Union Electric Company maintains its headquarters in St. Louis, Missouri, and functions as a subsidiary of Ameren Corporation.