Black Hills Corp. is a diversified energy company. It operates through the following segments: Electric Utilities, Gas Utilities, Power Generation, Mining, and Corporate and Other. The Electric Utilities segment generates, transmits, and distributes electricity in South Dakota, Wyoming, Colorado, and Montana. The Gas Utilities segment conducts natural gas utility operations through the Arkansas, Colorado, Iowa, Kansas, Nebraska, and Wyoming subsidiaries. The Power Generation segment produces electric power from its generating plants and sells the electric capacity and energy. The Mining segment comprises of the production and sale of coal to site, mine-mouth power generation facilities. The Corporate and Other segment covers unallocated corporate expenses that support its operating segments. The company was founded in 1883 and is headquartered in Rapid City, SD.