Iran vs South Korea: Year-to-year change in primary energy from fossil fuels vs.
Iran
-10.67 terawatt-hours
in 2025
South Korea
-12.72 terawatt-hours
in 2025
Iran rank
75th
South Korea rank
76th
Year-to-year change in primary energy from fossil fuels vs. over time
- Iran
- South Korea
How they compare
Iran currently reports -10.67 terawatt-hours against -12.72 terawatt-hours in South Korea, a difference of 2.05 terawatt-hours.
The two have swapped places 21 times across 60 shared years of data; in 1966 it was South Korea ahead.
Iran ranks 75th and South Korea ranks 76th of 80 countries.
South Korea has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Iran | South Korea | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.1458 terawatt-hours | 0.1795 terawatt-hours | 0.0337 terawatt-hours | South Korea |
| 1970s | 0.308 terawatt-hours | 1.04 terawatt-hours | 0.7339 terawatt-hours | South Korea |
| 1980s | 0.1349 terawatt-hours | 13.46 terawatt-hours | 13.33 terawatt-hours | South Korea |
| 1990s | -0.1554 terawatt-hours | 17.03 terawatt-hours | 17.18 terawatt-hours | South Korea |
| 2000s | 0.1777 terawatt-hours | 13.98 terawatt-hours | 13.8 terawatt-hours | South Korea |
| 2010s | 4.76 terawatt-hours | 5.37 terawatt-hours | 0.6109 terawatt-hours | South Korea |
| 2020s | -3.8 terawatt-hours | 27.45 terawatt-hours | 31.25 terawatt-hours | South Korea |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher year-to-year change in primary energy from fossil fuels vs. low-carbon energy, Iran or South Korea?
- Iran, at -10.67 terawatt-hours against -12.72 terawatt-hours in South Korea as of 2025.
- What is the difference in year-to-year change in primary energy from fossil fuels vs. low-carbon energy between Iran and South Korea?
- 2.05 terawatt-hours, with Iran ahead.
- How many years of comparable data are there for Iran and South Korea?
- 60 years are reported by both, from 1966 to 2025.
- How do Iran and South Korea rank globally for year-to-year change in primary energy from fossil fuels vs. low-carbon energy?
- Iran ranks 75th and South Korea ranks 76th of 80 countries.
- Where does this data come from?
- Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as Year-to-year change in primary energy from fossil fuels vs. low-carbon energy. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.