Black Hills Corp. is a diversified energy company. The company is headquartered in Rapid City, South Dakota and currently employs 2,982 full-time employees. The firm operates in the United States. The firm operates through two segments: Electric Utilities and Gas Utilities. The Electric Utilities segment generates, transmits, and distributes electricity to approximately 220,000 electric utility customers in Colorado, Montana, South Dakota and Wyoming. The company also owns and operates non-regulated power generation and mining assets that are vertically integrated into and primarily contracted to Electric Utilities. The Gas Utilities segment serves approximately 1,107,000 natural gas utility customers in Arkansas, Colorado, Iowa, Kansas, Nebraska, and Wyoming. The Gas Utilities segment owns and operates approximately 4,713 miles of intrastate gas transmission pipelines and 42,222 miles of gas distribution mains and service lines, seven natural gas storage sites, more than 50,000 horsepower of compression and over 515 miles of gathering lines.