Bath County Pumped Storage Station

The Bath County Pumped Storage Station is a pumped storage hydroelectric power plant, which is described as the "largest battery in the world", with a maximum generation capacity of 3,003 MW, an average of 2,772 MW, and a total storage capacity of 24,000 MWh. The station is located in the northern corner of Bath County, Virginia, on the southeast side of the Eastern Continental Divide, which forms this section of the border between Virginia and West Virginia. The station consists of two reservoirs separated by about 1,260 feet in elevation. It is the largest pumped-storage power station in the world.
Construction on the power station, with an original capacity of 2,100 megawatts , began in March 1977 and was completed in December 1985 at a cost of $1.6 billion, Voith-Siemens upgraded the six turbines between 2004 and 2009, increasing power generation to 500.5 MW and pumping power to 480 megawatts for each turbine. Bath County Station is jointly owned by Dominion Generation and FirstEnergy , and managed by Dominion. It stores energy for PJM Interconnection, a regional transmission organization in 13 states and the District of Columbia.

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