Ameren Illinois Utilities
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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. View our businesses.

Ameren was created by the merger of CIPSCO Incorporated and Union Electric Company. The name comes from combining the words American and Energy.

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.

Vision- Leading the way to secure energy future.

Mission- To meet our customer’s energy needs in a safe, reliable, efficient and environmentally responsible manner while enhancing shareholder value.

Values- Our values- the way we do business- include integrity, respect, accountability, stewardship, teamwork, and commitment to excellence.