St. Louis-based Ameren Corporation (NYSE: AEE) is among the nation's largest investor-owned electric and gas utilities. We serve 2.4 million electric and nearly one million natural gas customers across a 64,000-square-mile area of Illinois and Missouri. We have a generating capacity of 16,900 megawatts, and we operate merchant power generation, plus development, marketing and fuels services companies.
You can find information about our operating companies by following the links below:
