pumped hydroelectric storage
Also found in: Acronyms.
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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.