Ameren Illinois Co is a US-based company operating in Multi-Utilities industry. The company is headquartered in Collinsville, Illinois and currently employs 3,108 full-time employees. Ameren Illinois Company (Ameren Illinois) is a utility company that operates rate-regulated electric transmission, electric distribution, and natural gas distribution businesses in Illinois. Ameren Illinois has three segments: Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Illinois Transmission. Ameren Illinois Electric Distribution segment consists of the electric distribution business of Ameren Illinois. Ameren Illinois Natural Gas segment consists of the natural gas business of Ameren Illinois. The Ameren Transmission segment consists of electric transmission business of Ameren Illinois. The firm supplies electric and natural gas utility service to a 43,700 square mile area in central and southern Illinois. Ameren Illinois supplies electric service to 1.2 million customers and natural gas service to 0.8 million customers.
