Takahama nuclear power plant 4
Gross capacity
870MW
Takahama nuclear power plant 4 is a pressurised water reactor unit at Takahama nuclear power plant in Japan rated at 870 MW gross. It is operating. Commercial operation began 5 Jun 1985.
Specification
| Reactor type | Pressurised water reactor (PWR) |
|---|---|
| Model | M (3-loop) |
| Size class | Large |
| Coolant | Light water |
| Moderator | Light water |
| Gross capacity | 870MW |
| Net capacity (reference) | 830MW |
| Net capacity (design) | 830MW |
| Thermal output | 2,660MWt |
| Typical enrichment | 3–5% U-235 |
Ownership & location
| Site | Takahama nuclear power plant |
|---|---|
| Unit | 4 |
| Country | Japan |
| Owner | Kansai Electric Power Co100% |
| Operator | Kansai Electric Power |
| Coordinates | 35.5223, 135.5036 |
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utilities do not publish fuel contracts.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
- 19 Mar 1981Construction start
- 11 Oct 1984First criticality
- 1 Nov 1984Grid connection
- 5 Jun 1985Commercial operation
Other units at Takahama nuclear power plant
| Unit | Status | Gross MW |
|---|---|---|
| Takahama nuclear power plant 1 | 826 | |
| Takahama nuclear power plant 2 | 826 | |
| Takahama nuclear power plant 3 | 870 |
Other M (3-loop) units
9 units worldwide share this model designation.
| Unit | Country | Status | Gross MW |
|---|---|---|---|
| Ikata nuclear power plant 3 | Japan | 890 | |
| Mihama nuclear power plant 3 | Japan | 826 | |
| 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 | |
| Tomari nuclear power plant 3 | Japan | Under construction | 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