Gianelli Power Plant
|Gianelli Power Plant|
Aerial photograph of the San Luis (William R. Gianelli) Power plant.
|Location||Merced County, California|
|Commission date||June 3, 1960|
|Owner(s)||State of California|
|Operator(s)||United States Bureau of Reclamation|
|Pumped-storage power station|
|Upper reservoir||O'Neill Forebay|
|Upper res. capacity||56,400 acre feet|
|Lower reservoir||San Luis Reservoir|
|Lower res. capacity||2,041,000 acre feet|
|Hydraulic head||290 feet|
|Nameplate capacity||424 MW|
|Storage capacity||298 Hours|
|Annual net output||
123,480 MWh (2009) |
311,535 MWh (2012)
111,800 MWh (2014)
The Gianelli Power Plant, also known as the San Luis Power Plant, is a pumped-storage hydroelectric plant that is at the base of the San Luis Dam in California. During the wet season, turbines pump water from the O`Neill forebay into the reservoir, then when needed during the irrigation season, water flows from the reservoir back through the turbines and generates electricity. This is an unusual use of pumped storage where the intention is to capture irrigation water not to store power.
- "Powerplant details — San Luis (William R. Gianelli) Powerplant". United States Bureau of Reclamation. 16 Dec 2013. Retrieved 30 May 2016.
- "San Luis (William R. Gianelli) Pumped Storage Hydroelectric Powerplant". DOE Global Energy Storage Database. 12 April 2013. Retrieved 30 May 2016.
- "Mapping drought's impact on electricity generation". Retrieved 10 August 2016.
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