Mitsubishi Heavy Industries
Mitsubishi Heavy Industries is the nuclear steam supply system vendor for 21 reactor units on record, 12 of them operating, totalling 11.6 GW of gross capacity across 1 country.
Operating units
12
11.6 GW gross
Under construction
1
Planned
0
Retired
5
Built Japan's PWR fleet under Westinghouse licence and developed the two-, three- and four-loop M-series and the APWR. Holds a minority stake in Framatome.
Company
| Headquarters | Tokyo, Japan |
|---|---|
| Founded | 1884 |
| Ownership | listed |
| Listing | TSE: 7011 |
| Roles in the chain | vendor |
Installed base by country
| Japan | 12 |
|---|
Position in the chain
Facilities
| Facility | Stage | Country | Capacity / output | Status |
|---|---|---|---|---|
| Tokai-Mura (Mitsubishi Nuclear Fuel) | fabrication | JPN | 440tHM/yr | operating |
What it supplies
| Product | For | Operating units of that kind |
|---|---|---|
| PWR fuel assemblies | pwr | — |
Recorded as capability against a reactor type or model line rather than against named units, because utilities do not publish fuel contracts.
Installed base
| Unit | Country | Status | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Genkai nuclear power plant 3 | Japan | M (4-loop) | 1,180 | 1994 | |
| Genkai nuclear power plant 4 | Japan | M (4-loop) | 1,180 | 1997 | |
| Ohi nuclear power plant 3 | Japan | M (4-loop) | 1,180 | 1991 | |
| Ohi nuclear power plant 4 | Japan | M (4-loop) | 1,180 | 1993 | |
| Ikata nuclear power plant 3 | Japan | M (3-loop) | 890 | 1994 | |
| Sendai nuclear power plant 1 | Japan | M (3-loop) | 890 | 1984 | |
| Sendai nuclear power plant 2 | Japan | M (3-loop) | 890 | 1985 | |
| Takahama nuclear power plant 3 | Japan | M (3-loop) | 870 | 1985 | |
| Takahama nuclear power plant 4 | Japan | M (3-loop) | 870 | 1985 | |
| Mihama nuclear power plant 3 | Japan | M (3-loop) | 826 | 1976 | |
| Takahama nuclear power plant 1 | Japan | M (3-loop) | 826 | 1974 | |
| Takahama nuclear power plant 2 | Japan | M (3-loop) | 826 | 1975 | |
| Tomari nuclear power plant 3 | Japan | Under construction | M (3-loop) | 912 | 2027 |
| Tsuruga nuclear power plant 2 | Japan | Mothballed | M (4-loop) | 1,160 | 1987 |
| Tomari nuclear power plant 1 | Japan | Mothballed | M (2-loop) | 579 | 1989 |
| Tomari nuclear power plant 2 | Japan | Mothballed | M (2-loop) | 579 | 1991 |
| Ikata nuclear power plant 1 | Japan | Retired | M (2-loop) | 566 | 1977 |
| Ikata nuclear power plant 2 | Japan | Retired | M (2-loop) | 566 | 1982 |
| Genkai nuclear power plant 1 | Japan | Retired | M (2-loop) | 559 | 1975 |
| Genkai nuclear power plant 2 | Japan | Retired | M (2-loop) | 559 | 1981 |
| Mihama nuclear power plant 2 | Japan | Retired | M (2-loop) | 500 | 1972 |
Sources
- Mitsubishi Heavy Industries — company source
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release — CC BY 4.0 · retrieved 2026-09-06