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Pumped-storage hydroelectricity

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. Low-cost surplus off-peak…

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Basic principle

Types

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Potential technologies

History

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Pumped-storage hydroelectricity

Nodes97
Edges96
Triples36
Avg. degree1.98
Density0.020619
Components1

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Pumped-storage hydroelectricity

Top relations

related to Basic principle · 10
Pumped-storage hydroelectricity → At, Francis, In, PAT, PSH, Pump As Turbine, Pumped, The, Variable, When
related to China · 10
Pumped-storage hydroelectricity → China, GW, Hebei, In January, Jilin, Shandong, State Grid Corporation, US, Xinjiang Autonomous Region, Zhejiang

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Important terminology

storage pumped energy water capacity power gw plants reservoir pumped-storage electricity hydroelectric hydro use may project used reservoirs mw system

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
sunlight is used to lift water upward against the force of gravityinstance ofRed is power generated.Energy from a source0.80text
giving it potential energyinstance ofRed is power generated.Energy from a source0.80text
coal-fired plantsinstance ofpermitting thermal power stations0.80text
nuclear power plants that provide base-load electricity to continue operating at peak efficiencyinstance ofpermitting thermal power stations0.80text
while reducing the need forinstance ofpermitting thermal power stations0.80text
frequency regulationinstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
spinning reserveinstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
load followinginstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
and operating reserveinstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
in addition to bulk energy storageinstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
peak-shaving functionsinstance ofcan respond to load changes within seconds.Pumped-storage plants can therefore contribute ancillary services0.80text
the Kidston project under construction in Australiainstance oflocations such as disused mines0.80text

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