Central Illinois Public Service Company
From Wikipedia, the free encyclopedia
The Central Illinois Public Service Company was an electric streetcar holding company and power utility first organized in 1902. Under its later quarter billion dollar holding company, CIPSCO Inc. (formerly NYSE: CIP), it merged in 1997 with the larger neighboring Union Electric Company of Missouri (formerly NYSE: UEP) to form Ameren Corporation (NYSE: AEE) based in St. Louis, Missouri.[1] Now a subsidiary, Ameren Illinois is headquartered in Springfield, Illinois.