The Ameren Illinois Utilities (AIU) is a regulated utility, headquartered in Peoria, Illinois. It has three operating companies, AmerenCIPS, AmerenCILCO and AmerenIP, delivering electricity and natural gas to customers in central and southern Illinois. AIU represents one of three corporate business segments of Ameren Corporation, headquartered in St. Louis, Missouri.
Budget billing. Residential customers can avoid fluctuations that may come with winter heating and summer air conditioning. Learn how it works.Info in your hand. Report or check on power outages and get safety tips on your smartphone. Watch a video to learn more.
