Mountaineer is a coal-fired power plant located in New Haven, West Virginia, operating under the jurisdiction of the ReliabilityFirst Corporation within the PJM Interconnection power control area. The facility boasts an operating capacity of 1,299 megawatts, utilizing steam turbine technology to generate electricity. The plant is regulated and is primarily owned and operated by Appalachian Power Company, a subsidiary of American Electric Power Company. Mountaineer plays a significant role in the regional energy landscape, contributing to the reliability and stability of the power supply in its service area.