Mihama nuclear power plant 3
Gross capacity
826MW
Mihama nuclear power plant 3 is a pressurised water reactor unit at Mihama nuclear power plant in Japan rated at 826 MW gross. It is operating. Commercial operation began 1 Dec 1976.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | Mitsubishi 3-loopM (3-loop) in the source |
| Size | Largeabove 300 MWe |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 826MW |
| Net capacity (reference) | 780MW |
| Net capacity (design) | 780MW |
| Thermal output | 2,440MWt |
| NSSS vendor | Mitsubishi Heavy Industriesall vendors |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Mihama nuclear power plant |
|---|---|
| Unit | 3 |
| Country | Japan |
| Owner | Kansai Electric Power Co100% |
| Operator | Kansai Electric Power |
| Coordinates | 35.7024, 135.9634 |
| Planned retirement | 2036planned, not actual |
Fuel chain for this unit
Fuel form
Uranium dioxide pellets in zirconium-alloy cladding
Enrichment
3–5% U-235
Who makes this assembly
- China National Nuclear Corporation PWR fuel assemblies
- ENUSA Industrias Avanzadas PWR and BWR fuel assemblies
- Framatome PWR fuel assemblies
- KEPCO Nuclear Fuel PWR fuel assemblies
- Mitsubishi Heavy Industries PWR fuel assemblies
- Westinghouse Electric Company PWR fuel assemblies
Upstream
Enriched fuel means this unit sits downstream of five conversion plants and four enrichment operators holding 88% of world capacity between the top three.
Fabricator capability is recorded against reactor type and model line, not against named units,
utilities do not publish fuel contracts. See the fuel chain.
Timeline
- 7 Aug 1972Construction start
- 28 Jan 1976First criticality
- 19 Feb 1976Grid connection
- 1 Dec 1976Commercial operation
Other units at Mihama nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Mihama nuclear power plant 1 | Retired | 340 |
| Mihama nuclear power plant 2 | Retired | 500 |
Other M (3-loop) units
9 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Ikata nuclear power plant 3 | Japan | 890 | |
| Sendai nuclear power plant 1 | Japan | 890 | |
| Sendai nuclear power plant 2 | Japan | 890 | |
| Takahama nuclear power plant 1 | Japan | 826 | |
| Takahama nuclear power plant 2 | Japan | 826 | |
| Takahama nuclear power plant 3 | Japan | 870 | |
| Takahama nuclear power plant 4 | Japan | 870 | |
| Tomari nuclear power plant 3 | Japan | Mothballed | 912 |
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 2024-05-16
- 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