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Pumped-storage hydroelectricity (PSH), or pumped hydroelectric energy storage (PHES), is a type of hydroelectric energy storage used by electric power systems for load balancing. A PSH system stores energy in the form of gravitational potential energy of water, pumped from a lower elevation reservoir to a higher elevation.
Storage capacity is the amount of energy extracted from an energy storage device or system; usually measured in joules or kilowatt-hours and their multiples, it may be given in number of hours of electricity production at power plant nameplate capacity; when storage is of primary type (i.e., thermal or pumped-water), output is sourced only with ...
The Blenheim–Gilboa Pumped Storage Power Station is a pumped-storage hydroelectricity plant in the Catskill Mountains of New York State. The plant is part of the New York Power Authority, and can generate over 1,100 megawatts (1,500,000 hp) of electricity. It is used daily to cover peak demand.
The Ludington Pumped Storage Plant is a hydroelectric plant and reservoir in Ludington, Michigan. It was built between 1969 and 1973 at a cost of $315 million and is owned jointly by Consumers Energy and DTE Energy and operated by Consumers Energy. At the time of its construction, it was the largest pumped storage hydroelectric facility in the ...
The facility is operated by the Susquehanna Electric Company, a subsidiary of Constellation Energy. The facility's upper reservoir is the 1,000-acre (400 ha) Muddy Run Reservoir, with a full pool elevation of over 500 feet (150 m), and a usable storage capacity of 1,466 million cubic feet (33,700 acre⋅ft; 41.5 hm 3).
Bear Swamp Generating Station or Jack Cockwell Station is a pumped-storage hydroelectric underground power station that straddles the Deerfield River in Rowe and Florida, Massachusetts. The reservoir covers 88 acres (36 ha), storing about 1.7 billion gallons at an elevation of 1,600 feet (490 m) above sea level, 770 feet (230 m) higher than the ...
When the demand becomes greater, water is released back into the lower reservoir through a turbine. In 2021 pumped-storage schemes provided almost 85% of the world's 190 GW of grid energy storage [2] and improve the daily capacity factor of the generation system. Pumped storage is not an energy source, and appears as a negative number in ...
The energy storage capacity of the station is approximately 9.1 GWh. [2] At peak output water flows through the generators at 390 cubic metres (86,000 imperial gallons) per second (about the volume of a 25 m (27 yd) swimming pool every second). [15]