Company Union Electric Co

Union Electric Company, doing business as Ameren Missouri, operates a rate-regulated electric generation, transmission and distribution business, and a rate-regulated natural gas transmission and distribution business in Missouri. The Company is a subsidiary of Ameren Corporation (Ameren). The Company principally uses coal, nuclear fuel, and natural gas for fuel in its operations. Its electric supply is primarily generated from its energy centers. Ameren Missouri primarily uses the interstate pipeline systems of Panhandle Eastern Pipe Line Company, Trunkline Gas Company, Natural Gas Pipeline Company of America and Mississippi River Transmission Corporation to transport natural gas to energy centers. The Company has agreements in place to purchase coal and to transport it to energy centers. As of December 31, 2015, the Company supplied electric and natural gas service to a 24,000 square-mile area in central and eastern Missouri.