Kashiwazaki Kariwa nuclear power plant 7
Kashiwazaki Kariwa nuclear power plant 7 is a boiling water reactor unit at Kashiwazaki Kariwa nuclear power plant in Japan rated at 1,356 MW gross. It is mothballed. Commercial operation began 1997.
GNPT records the unit as under construction, with a commercial operation date in the future. The Japan Atomic Industrial Forum's table of the status of Japan's nuclear power plants, as of 7 August 2026, lists Kashiwazaki-Kariwa 7 (ABWR, 1,356 MWe) among the operable units, commercial operation 1997, in outage since 2011.08.23. Only Ohma, Higashidori-1 and Shimane-3 are in its under-construction table. The unit is complete and idle, like its sister units already recorded as mothballed, so it is not under construction. The commercial operation year is the JAIF's; the exact day is not given there, so only the year is recorded.
status:
construction → mothballed
· Japan Atomic Industrial Forum, Current Status of Nuclear Power Plants in Japan (as of 7 August 2026)
· verified 2026-10-22
GNPT records the unit as under construction, with a commercial operation date in the future. The Japan Atomic Industrial Forum's table of the status of Japan's nuclear power plants, as of 7 August 2026, lists Kashiwazaki-Kariwa 7 (ABWR, 1,356 MWe) among the operable units, commercial operation 1997, in outage since 2011.08.23. Only Ohma, Higashidori-1 and Shimane-3 are in its under-construction table. The unit is complete and idle, like its sister units already recorded as mothballed, so it is not under construction. The commercial operation year is the JAIF's; the exact day is not given there, so only the year is recorded.
commercial_operation:
2030-01-01 → 1997
· Japan Atomic Industrial Forum, Current Status of Nuclear Power Plants in Japan (as of 7 August 2026)
· verified 2026-10-22
GNPT records the unit as under construction, with a commercial operation date in the future. The Japan Atomic Industrial Forum's table of the status of Japan's nuclear power plants, as of 7 August 2026, lists Kashiwazaki-Kariwa 7 (ABWR, 1,356 MWe) among the operable units, commercial operation 1997, in outage since 2011.08.23. Only Ohma, Higashidori-1 and Shimane-3 are in its under-construction table. The unit is complete and idle, like its sister units already recorded as mothballed, so it is not under construction. The commercial operation year is the JAIF's; the exact day is not given there, so only the year is recorded.
start_year:
2030 → 1997
· Japan Atomic Industrial Forum, Current Status of Nuclear Power Plants in Japan (as of 7 August 2026)
· verified 2026-10-22
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | ABWR |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,356MW |
| Net capacity (reference) | 1,315MW |
| Net capacity (design) | 1,315MW |
| Thermal output | 3,926MWt |
| NSSS vendor | GE Vernova Hitachi Nuclear Energyall vendors |
| Typical enrichment | 3–5% U-235 |
| Site | Kashiwazaki Kariwa nuclear power plant |
|---|---|
| Unit | 7 |
| Country | Japan |
| Owner | Tokyo Electric Power Co100% |
| Operator | Tokyo Electric Power |
| Coordinates | 37.4259, 138.5941 |
- Framatome BWR fuel assemblies
- Global Nuclear Fuel BWR fuel assemblies
- Westinghouse Electric Company BWR fuel assemblies
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Timeline
- 1 Jul 1993Construction start
- 1 Nov 1996First criticality
- 17 Dec 1996Grid connection
- 1997Commercial operation
Other units at Kashiwazaki Kariwa nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Kashiwazaki Kariwa nuclear power plant 1 | Mothballed | 1,100 |
| Kashiwazaki Kariwa nuclear power plant 2 | Mothballed | 1,100 |
| Kashiwazaki Kariwa nuclear power plant 3 | Mothballed | 1,100 |
| Kashiwazaki Kariwa nuclear power plant 4 | Mothballed | 1,100 |
| Kashiwazaki Kariwa nuclear power plant 5 | Mothballed | 1,100 |
| Kashiwazaki Kariwa nuclear power plant 6 | 1,356 |
Other ABWR units
11 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Kashiwazaki Kariwa nuclear power plant 6 | Japan | 1,356 | |
| Hamaoka nuclear power plant 5 | Japan | Mothballed | 1,380 |
| Hamaoka nuclear power plant 6 | Japan | Shelved | 1,400 |
| Kaminoseki nuclear power plant 1 | Japan | Shelved | 1,373 |
| Kaminoseki nuclear power plant 2 | Japan | Shelved | 1,373 |
| Longmen nuclear power plant 1 | Taiwan | Cancelled | 1,350 |
| Longmen nuclear power plant 2 | Taiwan | Cancelled | 1,350 |
| Ohma nuclear power plant 1 | Japan | Under construction | 1,383 |
| Shika nuclear power plant 2 | Japan | Mothballed | 1,206 |
| Shimane nuclear power plant 3 | Japan | Under construction | 1,373 |
Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06 · this unit last researched by GEM on 2026-06-24
- GEM.wiki entry (further reading) , CC BY-SA 4.0, linked, not quoted
How these sources are used, including the corrections applied on top of them and what is deliberately left blank · download the underlying data