Japan · 34.623, 138.142Hamaoka
Hamaoka, nuclear power plant in Japan, has 3 boiling water reactors with 3,473 MW net installed capacity, with operation suspended.
Unit Hamaoka 3 has been operating for 39 years, since 1987. Its 3,473 MW net are enough to supply about 10,900,000 households.
- Country
- Japan
- Units
- 5
- Technology
- BWR
- Net capacity
- 3,473 MWe
- First grid connection
- 1976
- Operator
- Chubu Electric Power
- Owner
- Chubu Electric Power Co Inc
- Status
- Operation suspended
See also: alerts for this plant · every plant in Japan · Vendor: Toshiba · every BWR reactor · how a BWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Hamaoka 1 | Boiling water (BWR) | BWR-4 | Shut down | 515 | 1,593 | Jun 1971 | Aug 1974 | Jan 2009 | — |
| Hamaoka 2 | Boiling water (BWR) | BWR-4 | Shut down | 806 | 2,436 | Jun 1974 | May 1978 | Jan 2009 | — |
| Hamaoka 3 | Boiling water (BWR) | BWR-5 | Offline, awaiting restart | 1,056 | 3,293 | Apr 1983 | Jan 1987 | — | — |
| Hamaoka 4 | Boiling water (BWR) | BWR-5 | Offline, awaiting restart | 1,092 | 3,293 | Oct 1989 | Jan 1993 | — | — |
| Hamaoka 5 | Boiling water (BWR) | ABWR | Offline, no restart pending | 1,325 | 3,926 | Jul 2000 | Apr 2004 | — | — |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Hamaoka 1, a 515 MWe BWR (BWR-4), started construction in 1971 and operated from 1974 to 2009.
Hamaoka 2, an 806 MWe BWR (BWR-4), started construction in 1974 and operated from 1978 to 2009.
Hamaoka 3, a 1,056 MWe BWR (BWR-5), started construction in 1983, was connected to the grid in 1987 and is currently suspended.
Hamaoka 4, a 1,092 MWe BWR (BWR-5), started construction in 1989, was connected to the grid in 1993 and is currently suspended.
Hamaoka 5, a 1,325 MWe BWR (ABWR), started construction in 2000, was connected to the grid in 2004 and is currently suspended.
Operator: Chubu Electric Power.
Owner: Chubu Electric Power Co Inc (Hamaoka 1, Hamaoka 2, Hamaoka 3, Hamaoka 4, Hamaoka 5).