Ameren Corporation (NYSE: AEE) is a Fortune 500 company with assets of $23 billion. It is the parent company of Ameren Illinois, based in Peoria, Ill., and Ameren Missouri in St. Louis, Mo.

Employing more than 9,000 personnel, Ameren companies serve 2.4 million electric customers and more than 900,000 natural gas customers across 64,000 square miles in Illinois and Missouri.

Ameren Missouri ranks as the largest electric power provider in Missouri, and Ameren Illinois ranks as Illinois' third largest natural gas distribution operation in total number of customers.

Ameren companies generate a net capacity of nearly 16,000 megawatts of electricity.

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