pumped hydroelectric storage


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pumped hydroelectric storage

[′pəmpt ¦hī·drō·i′lek·trik ′stȯr·ij]
(electricity)
A method of energy storage in which excess electrical energy produced at times of low demand is used to pump water into a reservoir, and this water is released at times of high demand to operate hydroelectric generators.
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In addition, the detailed study on the mine site allows us to explore the feasibility of abandoned mine cavities for pumped hydroelectric storage. We expect to make a decision on which site to advance by mid-2018.
The UK currently has 2800 MW of electricity storage capacity in the form of pumped hydroelectric storage. According to National Grid we will need 8000 MW of electricity storage capacity by 2025 if the penetration of wind power in the network is 30%.