Japan · 43.037, 140.512Tomari
Tomari, nuclear power plant in Japan, has 3 pressurized water reactors with 1,966 MW net installed capacity, with operation suspended.
Unit Tomari 1 has been operating for 37 years, since 1989. Its 1,966 MW net are enough to supply about 6,190,000 households.
- Country
- Japan
- Units
- 3
- Technology
- PWR
- Net capacity
- 1,966 MWe
- First grid connection
- 1989
- Operator
- Hokkaido Electric Power
- Owner
- Hokkaido Electric Power Co Inc
- Status
- Operation suspended
See also: alerts for this plant · every plant in Japan · Vendor: Mitsubishi Heavy Industries · every PWR reactor · how a PWR works
Units
| Unit | Type | Model | Status | MWe | MWt | Construction start | Grid connection | Closure | Load factor |
|---|---|---|---|---|---|---|---|---|---|
| Tomari 1 | Pressurized water (PWR) | Mitsubishi 2-loop (M 2LP) | Offline, awaiting restart | 550 | 1,650 | Apr 1985 | Dec 1988 | — | — |
| Tomari 2 | Pressurized water (PWR) | Mitsubishi 2-loop (M 2LP) | Offline, awaiting restart | 550 | 1,650 | Jun 1985 | Aug 1990 | — | — |
| Tomari 3 | Pressurized water (PWR) | Mitsubishi 3-loop (M 3LP) | Offline, awaiting restart | 866 | 2,660 | Nov 2004 | Mar 2009 | — | — |
Data: IAEA PRIS · Wikipedia · updated on Sep 17, 2026
Tomari 1, a 550 MWe PWR (Mitsubishi 2-loop (M 2LP)), started construction in 1985, was connected to the grid in 1988 and is currently suspended.
Tomari 2, a 550 MWe PWR (Mitsubishi 2-loop (M 2LP)), started construction in 1985, was connected to the grid in 1990 and is currently suspended.
Tomari 3, an 866 MWe PWR (Mitsubishi 3-loop (M 3LP)), started construction in 2004, was connected to the grid in 2009 and is currently suspended.
Operator: Hokkaido Electric Power.
Owner: Hokkaido Electric Power Co Inc (Tomari 1, Tomari 2, Tomari 3).