Castaic Power Plant

Castaic Power Plant, also known as the Castaic Pumped-Storage Plant, is a seven unit pumped-storage hydroelectric plant, operated by the Los Angeles Department of Water and Power, which provides peak load power from the falling water on the West Branch of the California State Aqueduct. It is a cooperative venture between the LADWP and the Department of Water Resources of the State of California. An agreement between the two organizations was signed on September 2, 1966, for construction of the project.

Castaic Power Plant
Front of Castaic Power Plant
Official nameCastaic Power Plant
CountryUnited States
LocationLos Angeles County, California
Coordinates34°35′14.32″N 118°39′23.88″W
Construction began1966
Opening dateJuly 11, 1973
Owner(s)CDWR, LADWP
Upper reservoir
CreatesPyramid Lake
Total capacity186,000 acre⋅ft (229,427,622 m3)
Lower reservoir
CreatesElderberry Forebay
Total capacity28,400 acre⋅ft (35,030,884 m3)
Power Station
Hydraulic head1,060 ft (323 m)
Turbines7
Pump-generators6
Installed capacity1507 MW (nominal)
1247 MW (rated)
Annual generation880,702,000 KWh (gross, 2001–2012)
319,181,000 KWh (net, 2001–2012)
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