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Ameren Illinois Service Territory

  

Our service territory spans 43,700 square miles, or about three-quarters of the state. Every day, we deliver electricity to 1.2 million electric and 816,000 natural gas customers in central and southern Illinois. We deliver safe, reliable energy to more than 1,200 communities. Our complex delivery system includes about 4,500 miles of electric transmission lines, 46,000 miles of distribution lines, 18,200 miles of natural gas transmission and distribution mains and 12 underground natural gas storage fields with a total capacity of approximately 24 billion cubic feet.