Fukushima Daini's four BWRs, 11 km south of Daiichi, survived the 2011 tsunami in cold shutdown but were never restarted; TEPCO decided in July 2019 to decommission them. The regulator approved a 44-year plan in April 2021 that removes about 10,000 pool fuel assemblies over 22 years using a new on-site dry cask store.
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Current state
| Status | Fuel removal |
| Country | Japan |
| Location | Naraha and Tomioka, Fukushima Prefecture |
| Site | Fukushima Daini |
| Units | Unit 1, Unit 2, Unit 3, Unit 4 |
| Unit count | 4 |
| Reactor types | BWR |
| Owner / licensee | Tokyo Electric Power Company Holdings (TEPCO) |
| Strategy | Immediate dismantling |
| Final shutdown | 2019 |
| Decommissioning start | 2021 |
| Spent fuel | About 10,000 fuel assemblies in unit pools, to be moved to on-site dry casks and reprocessed over ~22 years. |
| Notable issue | Decommissioned in tandem with Fukushima Daiichi in response to local demands. |
Notes
Plan runs ~44 years from 2021 approval (implies completion in the mid-2060s; no official year stated in the sources reviewed). final shutdown year = 2019 retirement decision.
Timeline
- 2018-06 — TEPCO said it was considering decommissioning Fukushima Daini. (source)
- 2019-07 — TEPCO formally decided to decommission all four units. (source)
- 2020-05 — TEPCO submitted its 44-year decommissioning plan to the NRA. (source)
- 2021-04-28 — The NRA approved the Fukushima Daini decommissioning plan. (source)
The timeline is append-only: corrections are added as new entries. Stated targets appear in the current-state table, never as milestones.
Related sites
- Biblis Nuclear Power Plant (Units A and B) Active dismantling · Germany
- Brokdorf Nuclear Power Plant (KBR) Active dismantling · Germany
- Brunsbüttel Nuclear Power Plant (KKB) Active dismantling · Germany
- Chinshan Nuclear Power Plant Fuel removal · Taiwan
- Chooz A Active dismantling · France
- Crystal River Unit 3 Site restoration · United States
- Doel Nuclear Power Plant (Units 1-3) Shut down · Belgium
- Dounreay (DFR and PFR fast reactors) Active dismantling · United Kingdom
See all 72 sites in the Nuclear Decommissioning Tracker →
Sources
- Fukushima Daini decommissioning plan approved — World Nuclear News, checked 2026-10-11
- Tepco declares Fukushima Daini for decommissioning — World Nuclear News, checked 2026-10-11
- Nuclear Power in Japan — World Nuclear Association, checked 2026-10-11