AEE vs IPLDP

Ameren Corporation

Ameren Corporation, together with its subsidiaries, operates as a public utility holding company in the United States. It operates through four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. The company engages in the rate-regulated electric generation, transmission, and distribution activities; and rate-regulated natural gas distribution and transmission businesses. It primarily generates electricity through coal, nuclear, and natural gas, as well as renewable sources, such as hydroelectric, wind, methane gas, and solar. The company serves residential, commercial, and industrial customers. The company was founded in 1881 and is headquartered in St. Louis, Missouri.

Interstate Power and Light Company

Interstate Power and Light Company, a public utility company, generates and distributes electricity, and distributes and transports natural gas to retail customers in Iowa. The company operates through three segments: Electric Operations, Gas Operations, and Other. It generates electricity from coal, natural gas, and wind energy; and purchases electricity from wholesale energy markets. The company also sells electricity to wholesale customers, including municipalities and rural electric cooperatives in Minnesota, Illinois, and Iowa. In addition, it generates and distributes steam for customers in Cedar Rapids, Iowa; and owns overhead electric distribution lines, underground electric distribution cables, and substation distribution transformers, as well as gas mains in Iowa. The company provides utility services to incorporated communities. It offers electric utility services to retail customers in various industries, such as farming, agriculture, industrial manufacturing, chemical, packaging, and food industries, as well as gas utility services for various industries comprising research, education, hospitality, manufacturing, and chemicals. As of December 31, 2020, it supplied electric service to approximately 495,000 retail customers and natural gas service to approximately 225,000 retail customers. The company was formerly known as Iowa Railway and Light Corporation. The company was incorporated in 1925 and is based in Cedar Rapids, Iowa. Interstate Power and Light Company is a subsidiary of Alliant Energy Corporation.