Ohma nuclear power plant 1
Under construction Japan
Gross capacity
1,383MW
Ohma nuclear power plant 1 is a boiling water reactor unit at Ohma nuclear power plant in Japan rated at 1,383 MW gross. It is under construction. Commercial operation began 1 Jan 2029.
Specification
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | ABWR |
| Size class | Large |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,383MW |
| Net capacity (reference) | 1,328MW |
| Net capacity (design) | 1,328MW |
| Thermal output | 3,926MWt |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Ohma nuclear power plant |
|---|---|
| Unit | 1 |
| Country | Japan |
| Owner | Electric Power Development Co Ltd100% |
| Operator | Electric Power Development |
| Coordinates | 41.5099, 140.9131 |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- Framatome BWR fuel assemblies
- Global Nuclear Fuel BWR fuel assemblies
- Westinghouse Electric Company BWR 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utilities do not publish fuel contracts.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
- 7 May 2010Construction start
- 1 Jan 2029Commercial operation
Other units at Ohma nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Ohma nuclear power plant Original | Cancelled | 600 |
Other ABWR units
11 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Kashiwazaki Kariwa nuclear power plant 6 | Japan | 1,356 | |
| Hamaoka nuclear power plant 5 | Japan | Mothballed | 1,380 |
| Hamaoka nuclear power plant 6 | Japan | Shelved | 1,400 |
| Kaminoseki nuclear power plant 1 | Japan | Shelved | 1,373 |
| Kaminoseki nuclear power plant 2 | Japan | Shelved | 1,373 |
| Kashiwazaki Kariwa nuclear power plant 7 | Japan | Under construction | 1,356 |
| Longmen nuclear power plant 1 | Taiwan | Cancelled | 1,350 |
| Longmen nuclear power plant 2 | Taiwan | Cancelled | 1,350 |
| Shika nuclear power plant 2 | Japan | Mothballed | 1,206 |
| Shimane nuclear power plant 3 | Japan | Under construction | 1,373 |
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 2026-06-24
- GEM.wiki entry (further reading) — CC BY-SA 4.0 — linked, not quoted