Tokai nuclear power plant 2
Tokai nuclear power plant 2 is a boiling water reactor unit at Tokai nuclear power plant in Japan rated at 1,100 MW gross. It is mothballed. Commercial operation began 1978.
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 Tokai-2 (BWR, 1,100 MWe) among the operable units, commercial operation 1978, in outage since 2011.03.11. 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 Tokai-2 (BWR, 1,100 MWe) among the operable units, commercial operation 1978, in outage since 2011.03.11. 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:
2026-01-01 → 1978
· 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 Tokai-2 (BWR, 1,100 MWe) among the operable units, commercial operation 1978, in outage since 2011.03.11. 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:
2026 → 1978
· 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 | BWR-5 |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 1,100MW |
| Net capacity (reference) | 1,060MW |
| Net capacity (design) | 1,056MW |
| Thermal output | 3,293MWt |
| NSSS vendor | GE Vernova Hitachi Nuclear Energyall vendors |
| Typical enrichment | 3–5% U-235 |
| Site | Tokai nuclear power plant |
|---|---|
| Unit | 2 |
| Country | Japan |
| Owner | Japan Atomic Power Co100% |
| Operator | Japan Atomic Power |
| Coordinates | 36.4215, 140.6028 |
- 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
- 3 Oct 1973Construction start
- 18 Jan 1978First criticality
- 13 Mar 1978Grid connection
- 1978Commercial operation
Other units at Tokai nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Tokai nuclear power plant 1 | Retired | 166 |
Other BWR-5 units
20 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Laguna Verde nuclear power plant 1 | Mexico | 805 | |
| Laguna Verde nuclear power plant 2 | Mexico | 803 | |
| Onagawa nuclear power plant 2 | Japan | 825 | |
| Shimane nuclear power plant 2 | Japan | 820 | |
| Fukushima Daiichi nuclear power plant 6 | Japan | Retired | 1,100 |
| Fukushima Daini nuclear power plant 1 | Japan | Retired | 1,100 |
| Fukushima Daini nuclear power plant 2 | Japan | Retired | 1,100 |
| Fukushima Daini nuclear power plant 3 | Japan | Retired | 1,100 |
| Fukushima Daini nuclear power plant 4 | Japan | Retired | 1,100 |
| Hamaoka nuclear power plant 3 | Japan | Mothballed | 1,100 |
| Hamaoka nuclear power plant 4 | Japan | Mothballed | 1,137 |
| Higashidori (Tohoku) nuclear power plant 1 | Japan | Mothballed | 1,100 |
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