The Black Hills (and neighboring states) are alive with the sound of energy generation, distribution, and exploration activities. Black Hills distributes power to 205,400 customers in Colorado, Montana, South Dakota, and Wyoming; its Cheyenne Light, Fuel and Power unit serves 40,970 electric customers and 36,000 natural gas customers in the Cheyenne area. Black Hills' energy segment serves 543,200 natural gas customers in Colorado, Iowa, Kansas, Nebraska, and Wyoming, and 94,400 electricity customers in Colorado. The company's unregulated segment is engaged in coal mining, power generation, oil and gas production and appliance repair services.