St. Louis based Ameren Corporation is among the nation’s largest investor-owned electric and gas utilities. The largest electric utility in Missouri and the second largest in Illinois, Ameren companies provide energy services to 2.4 million electric and nearly one million natural gas customers throughout its 64,000-square mile territory.
Created by the year-end 1997 mergers of Union Electric Company and CIPSCO, parent of Central Illinois Public Service Company, the company grew in 2003 with the acquisition of CILCORP, the parent of Central Illinois Light Company and again in 2004 with the acquisition of Illinois Power Company.
Ameren companies pride themselves on a long, successful tradition of financial strength, cost containment and quality customer service, as well as nine decades of uninterrupted cash dividend payments to stockholders.
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