Kori
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.
4 units: 3 operational, 1 permanent shutdown.
Net capacity in service: 2,637 MWe.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Kori 1 | PWR | WH 60 | 576 | 1972-08-01 | 1977-06-26 | 1978-04-29 | 2017-06-18 | Permanent Shutdown |
| Kori 2 | PWR | WH F | 640 | 1977-12-23 | 1983-04-22 | 1983-07-25 | Operational | |
| Kori 3 | PWR | WH F | 996 | 1979-10-01 | 1985-01-22 | 1985-09-30 | Operational | |
| Kori 4 | PWR | WH F | 1,001 | 1980-04-01 | 1985-12-31 | 1986-04-29 | Operational |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Kori 1 | 558 | 607 | 1,729 | 1977-06-19 | WESTINGHOUSE ELECTRIC CORPORATION | GENERAL ELECTRIC COMPANY (UK) | |
| Kori 2 | 618 | 681 | 1,882 | 1983-04-09 | WESTINGHOUSE ELECTRIC CORPORATION | GENERAL ELECTRIC COMPANY (UK) | |
| Kori 3 | 1,011 | 1,046 | 2,912 | 1985-01-01 | WESTINGHOUSE ELECTRIC CORPORATION | GENERAL ELECTRIC COMPANY (UK) | |
| Kori 4 | 903 | 1,046 | 2,912 | 1985-10-26 | WESTINGHOUSE ELECTRIC CORPORATION | GENERAL ELECTRIC COMPANY (UK) |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Kori 1 | 148.6 TWh | 76.0% | 78.8% | 79.5% |
| Kori 2 | 185.2 TWh | 79.5% | 78.4% | 79.4% |
| Kori 3 | 274.5 TWh | 81.4% | 79.8% | 80.6% |
| Kori 4 | 279.9 TWh | 84.1% | 82.4% | 83.1% |
Operator: Korea Hydro and Nuclear Power Co.
Owner: Korea Hydro and Nuclear Power Co.
Source: IAEA Power Reactor Information System (PRIS), as of 2026-11-02.
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.
$60
Lodging/Night
$40
M&IE/Day
$100
Total/Day
South Korea: 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.
35.3209, 129.295
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: Kori Nuclear Power Plant.
Kori Nuclear Power Plant is at Gori (Kori), a coastal village in the Gijang area of Busan, South Korea, on the Sea of Japan.
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Construction of Unit 1 began on 1 August 1972, followed by Unit 2 on 23 December 1977, Unit 3 on 1 October 1979 and Unit 4 on 1 April 1980. All four are Westinghouse-type pressurized water reactors. Unit 1 was connected to the grid on 26 June 1977 and entered commercial operation on 29 April 1978. During a refueling outage on 9 February 2012 the plant lost off-site power for about 12 minutes, and the event was reported a month late. Unit 1 was permanently shut down on 18 June 2017.