J-MOX, Rokkasho
Capacity
130tHM/yr
J-MOX, Rokkasho is a fabrication facility operated by Japan Nuclear Fuel Limited in Japan. It has a capacity of 130 tHM/yr as of 2026, about 1% of world fabrication capacity.
Under construction alongside the Rokkasho reprocessing plant and repeatedly delayed, now targeted for Japanese fiscal year 2027. Japan holds a large separated plutonium stockpile and no way to use it at scale, which is the reason this plant matters diplomatically as much as industrially.
Facility
| Stage | Fabrication |
|---|---|
| Operator | Japan Nuclear Fuel Limited |
| Country | Japan |
| Capacity | 130tHM/yr |
| Figure applies to | 2026 |
| Note on the figure | design capacity; the plant is not yet complete |
| Status | construction |
| Commissioned | not stated |
| Coordinates | 40.9500, 141.3833 |
Position in the chain
This facility is about 1% of world fabrication capacity (14,912 tHM/yr, 2022).
Japan Nuclear Fuel Limited also operates:
- Rokkasho Enrichment Plant (enrichment)
- Rokkasho LLW Disposal Center (repository)
- Rokkasho Reprocessing Plant (reprocessing)
Other fabrication facilities
| Facility | Capacity | Status |
|---|---|---|
| Cameco Fuel Manufacturing, Port Hope | 1,650tHM/yr | operating |
| Columbia Fuel Fabrication Facility | 1,600tHM/yr | operating |
| Elektrostal (MSZ) | 1,560tHM/yr | operating |
| Romans-sur-Isère (FBFC) | 1,400tHM/yr | operating |
| Richland | 1,200tHM/yr | operating |
| Novosibirsk Chemical Concentrates Plant | 1,200tHM/yr | operating |
| Toronto and Peterborough | 1,200tHM/yr | operating |
| Wilmington | 1,000tHM/yr | operating |
| Nuclear Fuel Complex, Hyderabad | 1,000tHM/yr | operating |
| Daejeon | 900tHM/yr | operating |
| Västerås | 800tHM/yr | operating |
| Yibin (CJNF) | 800tHM/yr | operating |
| Lingen (ANF) | 650tHM/yr | operating |
| Kurihama (GNF-J) | 630tHM/yr | operating |
| Springfields | 600tHM/yr | operating |
| Juzbado | 500tHM/yr | operating |
| Nuclear Fuel Complex, Kota | 500tHM/yr | operating |
| Tokai-Mura (Mitsubishi Nuclear Fuel) | 440tHM/yr | operating |
| Baotou (CBNF) | 400tHM/yr | operating |
| Kumatori (NFI) | 284tHM/yr | operating |
| Tokai-Mura (NFI) | 250tHM/yr | operating |
| Pitești | 250tHM/yr | operating |
| Baotou (CNNFC) | 246tHM/yr | operating |
| Resende | 240tHM/yr | operating |
| Ust-Kamenogorsk (ULBA) | 200tHM/yr | operating |
| Ezeiza and Córdoba (Conuar) | 200tHM/yr | operating |
| Melox, Marcoule | 195tHM/yr | operating |
| Sellafield MOX Plant | 120tHM/yr | shut down |
| Zheleznogorsk MOX plant | 60tHM/yr | operating |
| Isfahan Fuel Manufacturing Plant | not disclosed | uncertain |
Sources
- World Nuclear Association, Nuclear Fuel Fabrication · retrieved 2026-09-06
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data