Ikata 3 is Shikoku Electric's 846 MWe (net) PWR, restarted in August 2016 as Japan's fifth post-Fukushima restart. A court injunction idled it again in 2017-2018, but it is operating and resumed commercial operation in January 2026 after its latest inspection.
Background: Palisades fuel loading: Holtec restart timeline and what comes next · NRC reactor licensing process, explained
Current state
| Status | Restarted |
| Country | Japan |
| Location | Ikata, Ehime Prefecture |
| Plant | Ikata |
| Unit | 3 |
| Operator | Shikoku Electric Power |
| Reactor type | PWR |
| Net capacity (MWe) | 846 |
| Restart type | Post-Fukushima restart |
| Shut down | 2011-04 |
| Restarted | 2016-08-12 |
| Years offline | 5.3 |
| Regulator | NRA conformity approval 2015-07-15 (MOX use assumed) |
Notes
Power generation resumed 2016-08-15. Later court-ordered outages are not all itemised here; only the 2017-2018 injunction and 2018 restart are cited.
Timeline
- 2011-04 — Ikata 3 was taken offline for a periodic inspection. (source)
- 2015-07-15 — The NRA officially approved Ikata 3. (source)
- 2016-08-12 — Shikoku began restarting Ikata 3, the fifth Japanese reactor back under the new standards. (source)
- 2016-09-07 — The unit resumed commercial operation. (source)
- 2018-10-27 — Ikata 3 restarted after the Hiroshima High Court cancelled a provisional injunction in September 2018. (source)
- 2026-01-21 — Ikata 3 restarted commercial operation after a periodic inspection. (source)
The timeline is append-only: corrections are added as new entries. Stated targets appear in the current-state table, never as milestones.
Related units
- Genkai Unit 3 Restarted · Japan
- Genkai Unit 4 Restarted · Japan
- Hamaoka Unit 3 Cancelled · Japan
- Hamaoka Unit 4 Cancelled · Japan
- Higashidori Unit 1 (Tohoku Electric) Under review · Japan
- Kashiwazaki-Kariwa Unit 6 Restarted · Japan
- Kashiwazaki-Kariwa Unit 7 Approved · Japan
- Mihama Unit 3 Restarted · Japan
See all 45 units in the Nuclear Plant Restarts Tracker →
Sources
- Current Status of Nuclear Power Plants in Japan as of August 7, 2026 — Japan Atomic Industrial Forum (JAIF) (primary), checked 2026-10-11
- Current Status of Nuclear Power Plants in Japan as of March 14, 2019 — Japan Atomic Industrial Forum (JAIF) (primary), checked 2026-10-11
- Nuclear Power in Japan — World Nuclear Association, checked 2026-10-11
- Fifth Japanese power reactor restarted — World Nuclear News, checked 2026-10-11