CIS (EI) vs South Korea: Primary energy from nuclear
CIS (EI)
722.85 terawatt-hours
in 2025
South Korea
559.67 terawatt-hours
in 2025
CIS (EI) rank
2nd
South Korea rank
5th
Primary energy from nuclear over time
- CIS (EI)
- South Korea
How they compare
CIS (EI) currently reports 722.85 terawatt-hours against 559.67 terawatt-hours in South Korea, a difference of 163.18 terawatt-hours.
That makes CIS (EI)'s figure about 1.3 times South Korea's.
Across all 61 years both countries report, CIS (EI) has been ahead every year.
CIS (EI) ranks 2nd and South Korea ranks 5th of 3 groups.
CIS (EI) has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | CIS (EI) | South Korea | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 7.85 terawatt-hours | 0 terawatt-hours | 7.85 terawatt-hours | CIS (EI) |
| 1970s | 86.44 terawatt-hours | 1.68 terawatt-hours | 84.76 terawatt-hours | CIS (EI) |
| 1980s | 344.06 terawatt-hours | 61.44 terawatt-hours | 282.62 terawatt-hours | CIS (EI) |
| 1990s | 341.78 terawatt-hours | 210.09 terawatt-hours | 131.69 terawatt-hours | CIS (EI) |
| 2000s | 460.69 terawatt-hours | 405.39 terawatt-hours | 55.3 terawatt-hours | CIS (EI) |
| 2010s | 577.93 terawatt-hours | 455.59 terawatt-hours | 122.35 terawatt-hours | CIS (EI) |
| 2020s | 699.5 terawatt-hours | 529.39 terawatt-hours | 170.11 terawatt-hours | CIS (EI) |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy from nuclear, CIS (EI) or South Korea?
- CIS (EI), at 722.85 terawatt-hours against 559.67 terawatt-hours in South Korea as of 2025.
- What is the difference in primary energy from nuclear between CIS (EI) and South Korea?
- 163.18 terawatt-hours, with CIS (EI) ahead.
- How many years of comparable data are there for CIS (EI) and South Korea?
- 61 years are reported by both, from 1965 to 2025.
- How do CIS (EI) and South Korea rank globally for primary energy from nuclear?
- CIS (EI) ranks 2nd and South Korea ranks 5th of 3 groups.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as Primary energy from nuclear. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured in terawatt-hours of total energy supply.