ALLETE, Inc. operates as an energy company. The company operates through Regulated Operations, ALLETE Clean Energy, and Corporate and Other segments. It generates electricity from coal-fired, hydroelectric, natural gas-fired, biomass co-fired, and solar. The company provides regulated utility electric and natural gas in northwestern Wisconsin to approximately 15,000 electric customers and 13,000 natural gas customers, as well as regulated utility electric services in northeastern Minnesota to approximately 145,000 retail customers and 15 non-affiliated municipal customers. It also owns and maintains electric transmission assets in Wisconsin, Michigan, Minnesota, and Illinois. In addition, the company focuses on developing, acquiring, and operating clean and renewable energy projects; and owns and operates approximately 660 megawatt of wind energy generation. Further, it is involved in the coal mining operations in North Dakota; and real estate investment activities in Florida. The comp