Genkai nuclear power plant
Genkai nuclear power plant is a nuclear power station in Japan with 2 operating units totalling 2,360 MW gross. The site has 4 units on record in total.
Units
| Unit | Status | Type | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Unit 3 | PWR | M (4-loop) | 1,180 | 1994 | |
| Unit 4 | PWR | M (4-loop) | 1,180 | 1997 | |
| Unit 1 | Retired | PWR | M (2-loop) | 559 | 1975 |
| Unit 2 | Retired | PWR | M (2-loop) | 559 | 1981 |
Genkai nuclear power plant in context
By gross operating capacity Genkai nuclear power plant is the 2nd largest of 9 operating nuclear sites in Japan, holding 16% of the country's operating capacity, and ranks 72nd of 172 worldwide.
Its operating units started up between 1994 and 1997; the median unit is 30.5 years old, younger than the median of 35.0 in Japan.
The 4 units with both construction and grid dates on record took 3.3 to 5.0 years (median 3.9) from construction start to grid connection; the median across all reactors connected in the 1990s is 8.0 years.
The nearest other tracked nuclear sites are Sendai nuclear power plant (190 km), Kori nuclear power plant (207 km) and Saeul nuclear power plant (207 km).
Build time by unit
| Unit | Construction start | Grid connection | Years | Fleet median, same decade |
|---|---|---|---|---|
| Unit 1 | 1971 | 1975 | 3.4 | 5.4 (1970s) |
| Unit 2 | 1977 | 1980 | 3.3 | 7.3 (1980s) |
| Unit 3 | 1988 | 1993 | 5.0 | 8.0 (1990s) |
| Unit 4 | 1992 | 1996 | 4.3 | 8.0 (1990s) |
Nearest tracked nuclear sites
| Site | Country | Distance | Operating GW gross |
|---|---|---|---|
| Sendai nuclear power plant | Japan | 190 km | 1.8 |
| Kori nuclear power plant | South Korea | 207 km | 2.8 |
| Saeul nuclear power plant | South Korea | 207 km | 3.0 |
How these are worked out: ranks use gross operating capacity; ages count from the start-up year on record, as on the age page; build times run from construction start to grid connection, as on the build-times page; ratings are the tracker's net and design net capacity, as on the uprates page. Distances are straight-line between exact positions, so a site with only an approximate position gets none. A unit missing a date or a rating is left out of the figure that needs it.
Earthquakes nearby
Loading the latest USGS check…
| Time (UTC) | Mag | Depth | Epicentre | Distance |
|---|
Magnitude 4.0 and above within 200 km of Genkai nuclear power plant's listed coordinates, past 30 days. This is distance, not shaking: it says nothing about damage or any change in operation. Every plant.
| Location | Saga, Japan |
|---|---|
| Coordinates | 33.5152, 129.8360 |
| Elevation | about 15 mabove sea level |
| Setting | On the sea coast, 0.2 km from the water |
| Region | Eastern Asia |
| Units by status | Operating: 2 Retired: 2 |
Elevation is read at the listed coordinates from a 30 m terrain model (SRTM 30 m). Two independent models differ by a median of 6 m across our plants and by up to about 40 m on steep or coastal ground, and a point on a shoreline can read as sea level. Distance to the water is measured to a generalised 1:10 million coastline, so a few kilometres or less is not resolved. This is context, not a design-basis or flood-risk figure.
| Owners | Kyushu Electric Power Co Inc |
|---|---|
| Operators | Kyushu Electric Power |
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Sources
- Global Nuclear Power Tracker, Global Energy Monitor, August 2026 release , CC BY 4.0 · retrieved 2026-09-06
- 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