Japan Nuclear Fuel Limited
Japan Nuclear Fuel Limited is a JPN company active in the nuclear fuel chain as enricher, reprocessing.
Operator of the Rokkasho complex, enrichment, reprocessing and vitrification on one site. The reprocessing plant has been under construction since 1993 and its completion date has been postponed more than twenty times, making it one of the longest-running nuclear construction projects anywhere.
| Headquarters | Rokkasho, Aomori, Japan |
|---|---|
| Founded | not recorded |
| Ownership | private |
| Roles in the chain | enricher, reprocessing |
Position in the chain
Downstream
Enriched uranium from this company feeds fuel fabrication, and from there 373 operating reactors across these types. Heavy water reactors are absent because they run on natural uranium and skip enrichment entirely.
| Reactor type | Operating units |
|---|---|
| Pressurised water reactor | 309 |
| Boiling water reactor | 45 |
| Gas-cooled reactor | 9 |
| Light water graphite reactor | 7 |
| Fast reactor | 2 |
| High-temperature gas reactor | 1 |
Facilities
| Facility | Stage | Country | Capacity / output | Status |
|---|---|---|---|---|
| Rokkasho Enrichment Plant | enrichment | JPN | 150tSWU/yr | operating |
| J-MOX, Rokkasho | fabrication | JPN | 130tHM/yr | construction |
| Rokkasho LLW Disposal Center | repository | JPN | not disclosed | operating |
| Rokkasho Reprocessing Plant | reprocessing | JPN | 800tHM/yr | construction |
Japan Nuclear Fuel Limited in context
In reprocessing Japan Nuclear Fuel Limited holds 800 of the 3,860 tHM/yr of world reprocessing capacity in 2022 (21%), ranking 2nd of the 4 named operators in the source.
Japan Nuclear Fuel Limited has 4 facilities on record in 1 country (Japan): 2 operating and 2 planned, licensing or under construction. The oldest operating one was commissioned in 1992.
Share of each stage it works in
| Stage | Company | World total | Share | Rank | Source |
|---|---|---|---|---|---|
| Reprocessing | 800tHM/yr | 3,860(2022) | 21% | 2 of 4 | World Nuclear Association, Processing of Used Nuclear Fuel |
How these are worked out: shares and ranks use the world totals cited in the table, and only named companies are ranked (unnamed or country-level entries in a source are not). A facility with no stated capacity is counted as a facility but adds nothing to a capacity figure. Vendor figures count operating units where this company is the recorded reactor vendor; ages count from the start-up year on record, and build times run from construction start to grid connection, as on the age and build-times pages.
Sources
- Japan Nuclear Fuel Limited, company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · 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