Ameren Illinois is an organized electric and gas delivery company.Its headquarter is situated at St. Louis, Missouri under the name ”Ameren Corporation” which was established on December 31, 1997 by Central Illinois merging Public Service Company and Missouri's Union Electric Company. Ameren Illinois deals with business of energy distribution. The service territory of Ameren Illinois covers a distance of 43,700 square miles, or about three-quarters of the state. 45,400 miles of distribution lines, 12 underground natural gas storage fields, 4,500 miles of electric transmission lines and18,000 miles of natural gas transmission and distribution mains are included in their complicated delivery system. The contact details like address, contact number, customer care number and customer service phone number of Ameren Cips Illinois is displayed above.