Bulgaria vs Slovak Republic: Global primary energy use by source
Bulgaria
5.43 terawatt-hours
in 2025
Slovak Republic
4.23 terawatt-hours
in 2025
Bulgaria rank
37th
Slovak Republic rank
39th
Global primary energy use by source over time
- Bulgaria
- Slovak Republic
How they compare
Bulgaria currently reports 5.43 terawatt-hours against 4.23 terawatt-hours in Slovak Republic, a difference of 1.2 terawatt-hours.
That makes Bulgaria's figure about 1.3 times Slovak Republic's.
The two have swapped places 1 time across 61 shared years of data; in 1965 it was Slovak Republic ahead.
Bulgaria ranks 37th and Slovak Republic ranks 39th of 80 countries.
Across the 7 decades both report, Bulgaria averaged higher in 1 and Slovak Republic in 2.
Head to head by decade
| Decade | Bulgaria | Slovak Republic | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1970s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1980s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1990s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 2000s | 0.0069 terawatt-hours | 0.7222 terawatt-hours | 0.7153 terawatt-hours | Slovak Republic |
| 2010s | 1.48 terawatt-hours | 3.99 terawatt-hours | 2.51 terawatt-hours | Slovak Republic |
| 2020s | 6.02 terawatt-hours | 4.75 terawatt-hours | 1.27 terawatt-hours | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher global primary energy use by source, Bulgaria or Slovak Republic?
- Bulgaria, at 5.43 terawatt-hours against 4.23 terawatt-hours in Slovak Republic as of 2025.
- What is the difference in global primary energy use by source between Bulgaria and Slovak Republic?
- 1.2 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Bulgaria and Slovak Republic?
- 61 years are reported by both, from 1965 to 2025.
- How do Bulgaria and Slovak Republic rank globally for global primary energy use by source?
- Bulgaria ranks 37th and Slovak Republic ranks 39th of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) β with major processing by Our World in Data, published as Global 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 in terawatt-hours of total energy supply.