Reactors, capacity and uranium mining
South Korea has 32 recorded nuclear reactor units across 8 sites in the WhereNuc dataset. Current breakdown: 26 operational, 2 under construction, 2 planned, 2 permanently shut down. Combined net capacity of the operating fleet is about 25,172 MW (25.2 GW), ranking South Korea #5 of 32 countries with operating capacity in this dataset, roughly 6.9% of world operating capacity tracked here. The country’s first reactor reached commercial operation in 1978.
| Site | Status | Units | Net capacity | First online |
|---|---|---|---|---|
| Hanul | Operational | 6 | 5,653 MW | 1988 |
| Hanbit | Operational | 6 | 5,649 MW | 1986 |
| Saeul | Operational | 4 | 5,360 MW | 2016 |
| Kori | Operational | 4 | 3,189 MW | 1978 |
| Shin-Hanul | Operational | 2 | 2,680 MW | 2022 |
| Wolsong | Operational | 6 | 2,615 MW | 1983 |
| Shin-Kori | Operational | 2 | 1,993 MW | 2011 |
| Shin-Wolsong | Operational | 2 | 1,900 MW | 2012 |
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