Bulgaria vs South Korea: Annual change in primary energy from coal
Bulgaria
3.77 terawatt-hours
in 2025
South Korea
0.7708 terawatt-hours
in 2025
Bulgaria rank
15th
South Korea rank
18th
Annual change in primary energy from coal over time
- Bulgaria
- South Korea
How they compare
Bulgaria currently reports 3.77 terawatt-hours against 0.7708 terawatt-hours in South Korea, a difference of 3 terawatt-hours.
That makes Bulgaria's figure about 4.9 times South Korea's.
The two have swapped places 23 times across 60 shared years of data; in 1966 it was South Korea ahead.
Bulgaria ranks 15th and South Korea ranks 18th of 78 countries.
Across the 7 decades both report, Bulgaria averaged higher in 2 and South Korea in 5.
Head to head by decade
| Decade | Bulgaria | South Korea | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 3.89 terawatt-hours | 0.9362 terawatt-hours | 2.95 terawatt-hours | Bulgaria |
| 1970s | 1.53 terawatt-hours | 7.64 terawatt-hours | 6.11 terawatt-hours | South Korea |
| 1980s | 1.39 terawatt-hours | 14.71 terawatt-hours | 13.33 terawatt-hours | South Korea |
| 1990s | -3.52 terawatt-hours | 17.53 terawatt-hours | 21.05 terawatt-hours | South Korea |
| 2000s | -0.546 terawatt-hours | 35.89 terawatt-hours | 36.44 terawatt-hours | South Korea |
| 2010s | -1.46 terawatt-hours | 17.81 terawatt-hours | 19.27 terawatt-hours | South Korea |
| 2020s | -3.32 terawatt-hours | -33.99 terawatt-hours | 30.67 terawatt-hours | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from coal, Bulgaria or South Korea?
- Bulgaria, at 3.77 terawatt-hours against 0.7708 terawatt-hours in South Korea as of 2025.
- What is the difference in annual change in primary energy from coal between Bulgaria and South Korea?
- 3 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Bulgaria and South Korea?
- 60 years are reported by both, from 1966 to 2025.
- How do Bulgaria and South Korea rank globally for annual change in primary energy from coal?
- Bulgaria ranks 15th and South Korea ranks 18th of 78 countries.
- 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 Annual change in primary energy from coal. 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.