History
The San Luis Unit, West San Joaquin Division, was authorized as a part of the Central Valley Project on June 3, 1960, Public Law 86-488. The pump-generating plant was turned over to Delta-Mendota Canal Authority for maintenance in 1994.
Plan
The O`Neill Pump-Generating Plant pumps Central Valley Project water for offstream storage. The O`Neill Pump-Generating Plant consists of an intake channel leading off the Delta-Mendota Canal and six pump-generating units. Normally these units operate as pumps to lift water from 45 to 53 feet into the O`Neill Forebay. Water is occasionally released from the forebay to the Delta-Mendota Canal, and these units then operate as generators.
When operating as pumps and motors, each unit can discharge 700 cubic feet per second and has a rating of 6,000 horsepower. When operating as turbines and generators, each unit has a generating capacity of about 4,200 kilowatts. The pump-generating plant was turned over to Delta-Mendota Canal Authority for maintenance in 1994.
General
| NERC Region | Western Electricity Coordinating Council, California-Southern Nevada Power Area |
| PMA Service Area | Western Area Power Administration, Sierra Nevada Region |
| Plant Type | Conventional |
| Powerhouse Type | Above Ground |
| Turbine Type | VIP Pitch |
| Original Nameplate Capacity | 25,200 kW |
| Installed Capacity | 25,200 kW |
| Year of Initial Operation | 1967 |
| Age | 40 years |
| (Fiscal Year) | 2007 |
| Rated Head | 50 ft |
| Plant Factor | 2.7 percent |
| Production Mode | Peaking |
| Remotely Operated | Yes |
| River | San Luis Creek |
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