ALLETE, Inc. engages in the provision of electric and natural gas utility services. It operates through the following business segments: Regulated Operations, ALLETE Clean Energy, and U.S. Water Services. The Regulated Operations segment includes regulated utilities; Minnesota Power; SWL&P; and investment in ATC, which regulates utilities that owns and maintains electric transmission assets. The ALLETE Clean Energy segment develops, acquires, and operates clean and renewable energy projects. The U.S. Water Services segment provides integrated water management for industry by combining chemical, equipment, engineering, and service for customized solutions to reduce water and energy usage and improve efficiency. The company was founded in 1906 and is headquartered in Duluth, MN.