South Korea vs Switzerland: Share of primary energy from nuclear
South Korea
15.5%
in 2025
Switzerland
22.8%
in 2025
South Korea rank
12th
Switzerland rank
9th
Share of primary energy from nuclear over time
- South Korea
- Switzerland
How they compare
Switzerland currently reports 22.8% against 15.5% in South Korea, a difference of 7.3%.
That makes Switzerland's figure about 1.5 times South Korea's.
Across all 61 years both countries report, Switzerland has been ahead every year.
South Korea ranks 12th and Switzerland ranks 9th of 215 countries.
Switzerland has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | South Korea | Switzerland | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.0% | 0.2% | 0.2% | Switzerland |
| 1970s | 0.4% | 8.9% | 8.5% | Switzerland |
| 1980s | 8.3% | 22.5% | 14.1% | Switzerland |
| 1990s | 12.5% | 25.6% | 13.1% | Switzerland |
| 2000s | 15.5% | 27.0% | 11.5% | Switzerland |
| 2010s | 13.5% | 26.3% | 12.8% | Switzerland |
| 2020s | 14.8% | 25.8% | 11.0% | Switzerland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of primary energy from nuclear, South Korea or Switzerland?
- Switzerland, at 22.8% against 15.5% in South Korea as of 2025.
- What is the difference in share of primary energy from nuclear between South Korea and Switzerland?
- 7.3%, with Switzerland ahead.
- How many years of comparable data are there for South Korea and Switzerland?
- 61 years are reported by both, from 1965 to 2025.
- How do South Korea and Switzerland rank globally for share of primary energy from nuclear?
- South Korea ranks 12th and Switzerland ranks 9th of 215 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as Share of 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 as a percentage of total energy supply.