Bulgaria vs South Korea: Share of primary energy use by source
Bulgaria
13.9%
in 2025
South Korea
17.5%
in 2025
Bulgaria rank
57th
South Korea rank
54th
Share of primary energy use by source over time
- Bulgaria
- South Korea
How they compare
South Korea currently reports 17.5% against 13.9% in Bulgaria, a difference of 3.6%.
That makes South Korea's figure about 1.3 times Bulgaria's.
The two have swapped places 3 times across 40 shared years of data; in 1986 it was Bulgaria ahead.
Bulgaria ranks 57th and South Korea ranks 54th of 76 countries.
Across the 5 decades both report, Bulgaria averaged higher in 3 and South Korea in 2.
Head to head by decade
| Decade | Bulgaria | South Korea | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 16.6% | 2.3% | 14.3% | Bulgaria |
| 1990s | 17.9% | 5.3% | 12.6% | Bulgaria |
| 2000s | 13.4% | 11.2% | 2.1% | Bulgaria |
| 2010s | 13.9% | 15.0% | 1.1% | South Korea |
| 2020s | 13.9% | 17.0% | 3.1% | South Korea |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher share of primary energy use by source, Bulgaria or South Korea?
- South Korea, at 17.5% against 13.9% in Bulgaria as of 2025.
- What is the difference in share of primary energy use by source between Bulgaria and South Korea?
- 3.6%, with South Korea ahead.
- How many years of comparable data are there for Bulgaria and South Korea?
- 40 years are reported by both, from 1986 to 2025.
- How do Bulgaria and South Korea rank globally for share of primary energy use by source?
- Bulgaria ranks 57th and South Korea ranks 54th of 76 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 use by source. 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.