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 class | Large |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,127MW |
| Net capacity (reference) | 1,070MW |
| Net capacity (design) | 1,070MW |
| Thermal output | 3,438MWt |
| 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utilities do not publish fuel contracts.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