Ikata
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.
3 units: 1 operational, 2 permanent shutdown.
Net capacity in service: 846 MWe.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Ikata 1 | PWR | M (2-loop) | 538 | 1973-09-01 | 1977-02-17 | 1977-09-30 | 2016-05-10 | Permanent Shutdown |
| Ikata 2 | PWR | M (2-loop) | 538 | 1978-08-01 | 1981-08-19 | 1982-03-19 | 2018-05-23 | Permanent Shutdown |
| Ikata 3 | PWR | M (3-loop) | 846 | 1990-10-01 | 1994-03-29 | 1994-12-15 | Operational |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Ikata 1 | 538 | 566 | 1,650 | 1977-01-29 | MITSUBISHI HEAVY INDUSTRIES, LTD. | MITSUBISHI HEAVY INDUSTRIES, LTD. | Decommissioning from 2017-09-12 |
| Ikata 2 | 538 | 566 | 1,650 | 1981-07-31 | MITSUBISHI HEAVY INDUSTRIES, LTD. | MITSUBISHI HEAVY INDUSTRIES, LTD. | Decommissioning from 2021-01-07 |
| Ikata 3 | 846 | 890 | 2,660 | 1994-02-23 | MITSUBISHI HEAVY INDUSTRIES, LTD. | MITSUBISHI HEAVY INDUSTRIES, LTD. |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Ikata 1 | 125.7 TWh | 69.0% | 68.9% | 69.8% |
| Ikata 2 | 115.9 TWh | 67.9% | 67.9% | 68.4% |
| Ikata 3 | 151.3 TWh | 65.7% | 66.3% | 63.8% |
Operator: SHIKOKU ELECTRIC POWER CO., INC
Owner: SHIKOKU ELECTRIC POWER CO., INC
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.
33.4902, 132.311
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: Ikata Nuclear Power Plant.
Ikata Nuclear Power Plant is in the town of Ikata, Nishiuwa District, Ehime Prefecture, on the island of Shikoku, Japan, beside the Iyo-nada Sea.
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Construction began on 1 September 1973. The three units are pressurized water reactors, with Mitsubishi supplying Units 1 and 2 and a Mitsubishi and Westinghouse 3-loop design used for Unit 3. Unit 1 was connected to the grid on 17 February 1977, Unit 2 on 19 August 1981 and Unit 3 on 29 March 1994. Unit 1 was permanently shut down on 10 May 2016 and Unit 2 on 23 May 2018.