Black Hills Corporation is a US-based electric and natural gas utility company that operates in two segments: Electric Utilities and Gas Utilities. The Electric Utilities segment generates, transmits, and distributes electricity to approximately 218,000 electric utility customers in four states, while the Gas Utilities segment distributes natural gas to approximately 1,094,000 natural gas utility customers in six states. The company also produces electric power through wind, natural gas, and coal-fired generating plants and coal at its coal mine located near Gillette, Wyoming.