Cloud Peak Energy is headquartered in Wyoming, with operations in Wyoming and Montana, and a satellite office in Broomfield, CO. It is one of the largest U.S. coal producers, specializing in the production of low sulfur, subbituminous coal. With approximately 1,700 employees, the company is widely recognized for its exemplary performance in its safety and environmental programs. Cloud Peak Energy is a sustainable fuel supplier for approximately 4 percent of the nation’s electricity.