| # | Plant | Region | MW |
|---|---|---|---|
| 1 | Kashiwazaki Kariwa | Niigata | 7,965 |
| 2 | Fukushima Daiichi nuclear power plant | Fukushima Prefecture | 7,456 |
| 3 | Ohi | Fukui | 4,710 |
| 4 | Fukushima Daina | Fukushima | 4,400 |
| 5 | Hamaoka | Shizuoka | 3,504 |
| 6 | Genkai | Saga Prefecture | 3,478 |
| 7 | Takahama | Kyoto | 3,392 |
| 8 | Kaminoseki nuclear power plant | Yamaguchi Prefecture | 2,746 |
| 9 | Ashihama nuclear power plant | Mie Prefecture | 2,600 |
| 10 | Onagawa | Miyagi | 2,174 |
| 11 | Hohoku nuclear power plant | Yamaguchi Prefecture | 2,134 |
| 12 | Tomari | Hokkaido | 2,070 |
| 13 | Ikata | Ehime | 2,022 |
| 14 | Ohma nuclear power plant | Aomori Prefecture | 1,983 |
| 15 | Maki nuclear power plant | Niigata Prefecture | 1,847 |
| 16 | Sendai | Kagoshima | 1,780 |
| 17 | Shika | Ishikawa | 1,746 |
| 18 | Tsuruga | Fukui | 1,160 |
| 19 | Higashi-Dori | Aomori | 1,100 |
| 20 | Tokai Daini | Ibaraki | 1,100 |
| 21 | Mihama | Fukui | 826 |
| 22 | Namie-Odaka nuclear power plant | Fukushima Prefecture | 825 |
| 23 | Shimane | Shimane | 820 |
| 24 | Japan Power Demonstration Reactor nuclear power plant | Ibaraki Prefecture | 13 |
WRI Global Power Plant Database (CC BY 4.0).
This page contains 24 positive-capacity records totalling 61,851 MW. Lifecycle labels, capacity scope and capacity-quality provenance are kept separate so a source-backed capacity is not mistaken for a verified operating status.
| Status | Records |
|---|---|
| Construction | 3 |
| Mothballed | 5 |
| Not Reported | 7 |
| Operating | 8 |
| Shelved | 1 |
| Quality label | Records |
|---|---|
| legacy source record not current verified | 13 |
| source verified gem tracker location 2026 | 4 |
| source verified wikidata p2109 strict match | 7 |
Unknown upstream labels remain unclassified; they are never guessed. Download the exact records used here: CSV · JSON with limitations.
