Fugen
Reactor Data
Reactor Units
Every power reactor at this site as listed in the IAEA Power Reactor Information System (PRIS): reactor type and model, net electrical capacity, grid connection and commercial operation dates, and current status.
1 unit: 1 permanent shutdown.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Fugen ATR | HWLWR | ATR | 148 | 1972-05-10 | 1978-07-29 | 1979-03-20 | 2003-03-29 | Permanent Shutdown |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Fugen ATR | 148 | 165 | 557 | 1978-03-20 | HITACHI, LTD. | TOSHIBA CORPORATION |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Fugen ATR | 8.5 TWh | 61.9% | 61.9% | 63.7% |
Operator: JAPAN ATOMIC ENERGY AGENCY
Owner: JAPAN ATOMIC ENERGY AGENCY
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-19.
Working Here
Per Diem Rates FY 2026
Per diem covers lodging and meals & incidental expenses (M&IE) for government and contractor travel near this facility. Rates are from the U.S. State Department foreign per diem tables for FY 2026.
$208
Lodging/Night
$107
M&IE/Day
$315
Total/Day
Japan: rate for locations the State Department does not list separately
U.S. Department of State foreign per diem, for U.S. government and contractor travel.
Photos
Photos of this facility from the NukeWorker photo gallery. Click the header or any photo to browse the full album.
Facility Map
Interactive satellite map showing the facility's geographic location. Marker color indicates current status: green for online, red for offline, orange for reduced power. Click the header to open in Google Maps satellite view.
35.7547, 136.017
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.
Plant Facts
About This Site
Written by NukeWorker from public records: facts that do not change. Operator, status and capacity come from the live data elsewhere on this page. Sources: Wikipedia: Fugen Nuclear Power Plant.
Fugen was a demonstration Advanced Thermal Reactor, a heavy-water-moderated, light-water-cooled design, in the Myojin-cho district of Tsuruga, Fukui Prefecture, Japan.
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Construction began on 10 May 1972. The reactor was connected to the grid on 29 July 1978, and the plant was formally commissioned in March 1979. A tritium leak was reported there in 1997. It was permanently shut down on 29 March 2003 and later entered decommissioning.