Ameren

Ameren Corporation is an American power company created December 31, 1997, by the merger of St. Louis, Missouri’s Union Electric Company and the neighboring Central Illinois Public Service Company of Springfield, Illinois. It is now a holding company for several power companies and energy companies.

Ameren Corp. operates as a public utility holding company that provides electric and natural gas services. It operates through the following business segments: Ameren Missouri and Ameren Illinois. The Ameren Missouri segment operates a rate-regulated electric generation, transmission and distribution business, and a rate-regulated natural gas transmission and distribution business in Missouri. The Ameren Illinois segment operates a rate-regulated electric and natural gas transmission and distribution business in Illinois. The company was founded in 1997 and is headquartered in St. Louis, MO.