Black Hills Corporation, through its subsidiaries, operates as an electric and natural gas utility company in the United States. It operates through Electric Utilities, Gas Utilities, Power Generation, and Mining segments. The Electric Utilities segment generates, transmits, and distributes electricity to approximately 214,000 electric customers in Colorado, Montana, South Dakota, and Wyoming, as well as provides electrical system construction services to large industrial customers. This segment owns 939 megawatts of generation capacity and 8,900 miles of electric transmission and distribution lines. The Gas Utilities segment distributes natural gas to approximately 1,066,000 natural gas utility customers in Arkansas, Colorado, Iowa, Kansas, Nebraska, and Wyoming. It also provides appliance repair services to residential customers through company technicians and third-party service providers; and constructs and maintains gas infrastructure facilities for gas transportation customers. T