Powder River Energy Corporation (PRECorp) is an electric cooperative serving approximately 11,900 customers in a 16,200 square-mile area of rural Wyoming and Montana. PRECorp’s customers frequently experience harsh weather conditions. Severe weather conditions in PRECorp’s rural and remote service territory present unique challenges in providing reliable electric service to PRECorp’s customers. PRECorp’s customers include coal mining facilities that provide approximately 40 percent of all coal production in the United States. PRECorp addressed these reliability challenges as part of its Smart Grid Investment Grant (SGIG) award totaling $5 million, including $2 million in funding from the U.S. Department of Energy (DOE). The SGIG grant has allowed PRECorp to undertake grid modernization improvements for network communications and control systems infrastructure to ensure higher reliability and increased service efficiency for its customers.