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Ameren Illinois

Electric utility company in Illinois

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About Ameren Illinois

Ameren Illinois is one of the largest utility companies in Illinois. It supplies electricity to over 1.2 million customers and natural gas to over 800,000 customers across most of the state. Ameren is also responsible for maintaining the power and natural gas infrastructure in its service area. The company is a subsidiary of Ameren Corporation based in Collinsville, Illinois. Ameren Illinois was established in 2010 through the merger of three utility companies in Illinois.

If you live or operate a business in the southern three-fourths of Illinois, chances are Ameren is your utility provider. Some of the major cities it serves include Champaign, Peoria, and Springfield. Read on to learn the key details about Ameren Illinois, including its price to compare, coverage areas, and contact information.