Ameren’s service territory offers various service options. In Missouri, AmerenUE provides service to 1.2 million electric customers and 125,000 natural gas customers as a regulated utility. Ameren’s Illinois operating companies―AmerenCILCO, AmerenCIPS and ,AmerenIP―provide electric service to more than 1.2 million customers and gas service to more than 900,000 customers in a non-regulated environment that provides various supply options.
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