Gianelli Power Plant
| Gianelli Power Plant | |
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Aerial photograph of the San Luis (William R. Gianelli) Power plant.
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 Location of Gianelli Power Plant
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| Country | United States |
| Location | Merced County, California |
| Coordinates | 37°03′33″N 121°04′29″W / 37.05917°N 121.07472°WCoordinates: 37°03′33″N 121°04′29″W / 37.05917°N 121.07472°W |
| Status | Operational |
| 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 |
| Pump-generators | 8 |
| Power generation | |
| Nameplate capacity | 424 MW |
| Storage capacity | 298 Hours |
| Annual output | 123,480 MWh (2009) 311,535 MWh (2012) 111,800 MWh (2014) |
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Website usbr.gov |
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The Gianelli Power Plant, also known as the San Luis Power Plant, is a hydro-electric power plant that is at the base of the San Luis Dam in California. Due to the droughts in California, the plant has had a drastically reduced electricity output since the water levels in the reservoir have been kept lower than normal.
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