San Onofre nuclear power plant 2
Retired United States
Gross capacity
1,127MW
San Onofre nuclear power plant 2 is a pressurised water reactor unit at San Onofre nuclear power plant in United States rated at 1,127 MW gross. It is retired. Commercial operation began 8 Aug 1983.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | CE (2-loop) DRYAMB |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,127MW |
| Net capacity (reference) | 1,070MW |
| Net capacity (design) | 1,070MW |
| Thermal output | 3,438MWt |
| NSSS vendor | Combustion Engineeringall vendors |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | San Onofre nuclear power plant |
|---|---|
| Unit | 2 |
| Country | United States |
| Owner | Southern California Edison Co100% |
| Operator | Southern California Edison |
| Coordinates | 33.3692, -117.5553 |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- China National Nuclear Corporation PWR fuel assemblies
- ENUSA Industrias Avanzadas PWR and BWR fuel assemblies
- Framatome PWR fuel assemblies
- KEPCO Nuclear Fuel PWR fuel assemblies
- Mitsubishi Heavy Industries PWR fuel assemblies
- Westinghouse Electric Company PWR fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 1 Mar 1974Construction start
- 26 Jul 1982First criticality
- 20 Sep 1982Grid connection
- 8 Aug 1983Commercial operation
- 7 Jun 2013Permanent shutdown
Other units at San Onofre nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| San Onofre nuclear power plant 1 | Retired | 456 |
| San Onofre nuclear power plant 3 | Retired | 1,127 |
Other CE (2-loop) DRYAMB units
3 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Palisades nuclear power plant Unit 1 Repower | United States | Under construction | 800 |
| San Onofre nuclear power plant 3 | United States | Retired | 1,127 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2024-05-29
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data