Xcel Energy, Inc. operates as a holding company engaged in the generation, purchase, transmission, distribution, and sale of electricity. It operates through the following three segments: Regulated Electric Utility, Regulated Natural Gas Utility and All Others. The Regulated Electric Utility segment generates, transmits, and distributes electricity primarily in Minnesota, Wisconsin, Michigan, North Dakota, South Dakota, Colorado, Texas, and New Mexico. In addition, this segment includes sales for resale and provides wholesale transmission service to various entities in the United States. It also includes commodity trading operations. The Regulated Natural Gas Utility segment transports, stores, and distributes natural gas primarily in portions of Minnesota, Wisconsin, North Dakota, Michigan, and Colorado. The All Others segment engages in steam, appliance repair services, nonutility real estate activities, processing solid waste into refuse-derived fuel and investments in rental housing projects that qualify for low-income housing tax credits. The company was founded in 1909 and is headquartered in Minneapolis, MN.