Ohma nuclear power plant
Ohma nuclear power plant is a nuclear site in Japan with 2 units on record. None is currently operating.
Units
| Unit | Status | Type | Model | Gross MW | Online |
|---|---|---|---|---|---|
| Unit 1 | Under construction | BWR | ABWR | 1,383 | 2029 |
| Unit Original | Cancelled | - | - | 600 | - |
Unit by unit
Each unit's rating, type and milestone dates as recorded by the Global Nuclear Power Tracker, with any correction we made to it. A dash or "not disclosed" means the source does not give the value.
Ohma nuclear power plant 1 Under construction
| Reactor type | Boiling water reactor (BWR) |
|---|---|
| Model | ABWR |
| Size class | Large |
| Gross capacity | 1,383MW |
| Net capacity | 1,328MW |
| Thermal output | 3,926MWt |
| Enrichment | 3–5% U-235 |
| NSSS vendor | GE Vernova Hitachi Nuclear Energy |
| Owner | Electric Power Development Co Ltd100% |
| Operator | Electric Power Development |
| Construction start | 7 May 2010 |
|---|---|
| Commercial operation | 1 Jan 2029 |
Ohma nuclear power plant Original Cancelled
| Reactor type | not disclosed |
|---|---|
| Model | not disclosed |
| Size class | Large |
| Gross capacity | 600MW |
| Net capacity | not disclosed |
| Thermal output | not disclosed |
| Enrichment | not established |
| NSSS vendor | not on record |
| Cancelled | 1995 |
| Owner | Electric Power Development Co Ltd100% |
| Milestones | no dates on record |
|---|
Ohma nuclear power plant in context
No other nuclear site with an exact position in this dataset lies within 300 km.
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 Ohma 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 | Aomori, Japan |
|---|---|
| Coordinates | 41.5099, 140.9131 |
| Elevation | about 30 mabove sea level |
| Setting | On the sea coast, 0.6 km from the water |
| Region | Eastern Asia |
| Units by status | Under construction: 1 Cancelled: 1 |
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 | Electric Power Development Co Ltd |
|---|---|
| Operators | Electric Power Development |
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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