Wolsong
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: 1,735 MWe.
| Unit | Type | Model | Net MWe | Construction | Grid | Commercial Op | Shutdown | Status |
|---|---|---|---|---|---|---|---|---|
| Wolsong 1 | PHWR | CANDU 6 | 661 | 1977-10-30 | 1982-12-31 | 1983-04-22 | 2019-12-24 | Permanent Shutdown |
| Wolsong 2 | PHWR | CANDU 6 | 571 | 1992-09-25 | 1997-04-01 | 1997-07-01 | Operational | |
| Wolsong 3 | PHWR | CANDU 6 | 595 | 1994-03-17 | 1998-03-25 | 1998-07-01 | Operational | |
| Wolsong 4 | PHWR | CANDU 6 | 569 | 1994-07-22 | 1999-05-21 | 1999-10-01 | Operational |
Capacity, milestones and suppliers
| Unit | Design MWe | Gross MWe | Thermal MWt | First Criticality | Reactor Supplier | Turbine Supplier | Notes |
|---|---|---|---|---|---|---|---|
| Wolsong 1 | 629 | 683 | 2,061 | 1982-11-21 | ATOMIC ENERGY OF CANADA, LTD. | BBH (CANADA) / NEI PARSONS (U.K) | |
| Wolsong 2 | 652 | 593 | 2,061 | 1997-01-29 | ATOMIC ENERGY OF CANADA LTD./DOOSAN HEAVY INDUSTRIES & CONSTRUCTION | Doosan Heavy Industries & Construction and General Electric | |
| Wolsong 3 | 665 | 624 | 2,061 | 1998-02-19 | ATOMIC ENERGY OF CANADA LTD./DOOSAN HEAVY INDUSTRIES & CONSTRUCTION | Doosan Heavy Industries & Construction and General Electric | |
| Wolsong 4 | 669 | 589 | 2,061 | 1999-04-10 | ATOMIC ENERGY OF CANADA LTD./DOOSAN HEAVY INDUSTRIES & CONSTRUCTION | Doosan Heavy Industries & Construction and General Electric |
Lifetime performance, through 2025
| Unit | Electricity Supplied | Load Factor | Energy Availability | Operating Factor |
|---|---|---|---|---|
| Wolsong 1 | 140.3 TWh | 68.5% | 73.1% | 68.7% |
| Wolsong 2 | 144.1 TWh | 88.6% | 86.9% | 86.7% |
| Wolsong 3 | 271.8 TWh | 84.9% | 83.5% | 83.3% |
| Wolsong 4 | 272.4 TWh | 89.9% | 88.2% | 88.1% |
Operator: Korea Hydro and Nuclear Power Co.
Owner: Korea Hydro and Nuclear Power Co.
Source: IAEA Power Reactor Information System (PRIS), as of 2026-10-14.
Fuel Cycle Facilities
Fuel cycle plants at this site, as listed in the IAEA Nuclear Fuel Cycle Facilities Database: what each plant does, its scale and design capacity, the years it operated, its current status and who operates it.
1 facility: 1 in operation.
| Facility | Type | Scale | Design Capacity | Operated | Status | Operator |
|---|---|---|---|---|---|---|
| Wolsong Dry Storage | AFR Dry Spent Fuel Storage | Commercial | 6250 t HM | 1992– | In Operation | Korea Hydro & Nuclear Power Co (KHNP) |
Source: IAEA Nuclear Fuel Cycle Facilities Database (NFCFDB), as of 2026-10-13.
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.
35.7102, 129.476
Location & Contact
Physical address, phone number, and website for this facility. Use the directions link to get driving directions via Google Maps.