United States · 33.369, -117.555San Onofre
San Onofre, nuclear power plant in United States, operated 3 pressurized water reactors between 1968 and 2013 and is now shut down.
- Country
- United States
- Units
- 3
- Technology
- PWR
- Net capacity
- —
- First grid connection
- 1968
- Operator
- Southern California Edison
- Owner
- Southern California Edison Co
- Status
- Shut down
See also: alerts for this plant · every plant in United States · Nuclear power plants in California · Vendor: Westinghouse · Vendor: Combustion Engineering · every PWR reactor · how a PWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| San Onofre 1 | Pressurized water (PWR) | WH (DRY) | Shut down | 436 | 1,347 | May 1964 | Jul 1967 | Nov 1992 | — |
| San Onofre 2 | Pressurized water (PWR) | Combustion Engineering 2-loop (CE 2LP) | Shut down | 1,070 | 3,438 | Mar 1974 | Sep 1982 | Jun 2013 | — |
| San Onofre 3 | Pressurized water (PWR) | Combustion Engineering 2-loop (CE 2LP) | Shut down | 1,080 | 3,438 | Mar 1974 | Sep 1983 | Jun 2013 | — |
Data: IAEA PRIS · Global Energy Monitor · Wikipedia · updated on Sep 17, 2026
San Onofre 1, a 436 MWe PWR (WH (DRY)), started construction in 1964 and operated from 1967 to 1992.
San Onofre 2, a 1,070 MWe PWR (Combustion Engineering 2-loop (CE 2LP)), started construction in 1974 and operated from 1982 to 2013.
San Onofre 3, a 1,080 MWe PWR (Combustion Engineering 2-loop (CE 2LP)), started construction in 1974 and operated from 1983 to 2013.
Operator: Southern California Edison.
Owner: Southern California Edison Co (San Onofre 1, San Onofre 2, San Onofre 3).