The Federal Energy Regulatory Commission in the U.S. has issued a preliminary permit to Renewable Energy Aggregators to study the 20-MW Big Rock Pumped Storage Hydro Project in Virginia.
The project would be located in Big Rock in Buchanan County and would consist of:
An upper reservoir with a storage capacity of 404.97 acre-feet at a surface elevation of about 1,883 feet above mean sea level (msl) created through construction of a roller-compacted concrete or rock-fill dam
A new lower reservoir with a storage capacity of 547.76 acre-feet at a surface elevation of 1,241 feet msl;
A new 2,053-foot-long, 4-foot-diameter penstock connecting the upper and lower reservoirs;
A new 150-foot-long, 50-foot-wide, 25-foot-high powerhouse containing as many as two turbine-generator units with a total rated capacity of 20 MW;
A new transmission line connecting the powerhouse to a nearby electric grid interconnection point with options to evaluate multiple grid interconnection locations
The proposed project would have annual generation of 86,449.37 MWh.
The preliminary permit is effective for 48 months.