Additionally, our recently acquired Black Hills Energy utility operations provide electric services to approximately 93,300 customers in southeastern Colorado and natural gas utility services to approximately 524,000 customers in Colorado, Iowa, Kansas and Nebraska. Our energy portfolio also includes non-utility businesses; Black Hills Exploration & Production produces oil and natural gas in New Mexico, Wyoming and Colorado. Enserco Energy provides wholesale natural gas marketing and producer services for natural gas and crude oil. The Wyodak coal mine in Wyoming's Powder River Basin supports the Company's low-cost, mine-mouth power generation. Black Hills also has a fleet of power generation facilities in Colorado, Wyoming and South Dakota that produce more than 1,000 MW of energy annually for our own utility customers as well as others.