Bulgaria vs Slovak Republic: Primary energy from hydropower
Bulgaria
2.78 terawatt-hours
in 2025
Slovak Republic
2.96 terawatt-hours
in 2025
Bulgaria rank
52nd
Slovak Republic rank
50th
Primary energy from hydropower over time
- Bulgaria
- Slovak Republic
How they compare
Slovak Republic currently reports 2.96 terawatt-hours against 2.78 terawatt-hours in Bulgaria, a difference of 0.18 terawatt-hours.
That makes Slovak Republic's figure about 1.1 times Bulgaria's.
The two have swapped places 14 times across 61 shared years of data; in 1965 it was Slovak Republic ahead.
Bulgaria ranks 52nd and Slovak Republic ranks 50th of 80 countries.
Across the 7 decades both report, Bulgaria averaged higher in 3 and Slovak Republic in 4.
Head to head by decade
| Decade | Bulgaria | Slovak Republic | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 1.84 terawatt-hours | 1.83 terawatt-hours | 0.0038 terawatt-hours | Bulgaria |
| 1970s | 2.62 terawatt-hours | 1.91 terawatt-hours | 0.7117 terawatt-hours | Bulgaria |
| 1980s | 2.94 terawatt-hours | 1.88 terawatt-hours | 1.06 terawatt-hours | Bulgaria |
| 1990s | 2.25 terawatt-hours | 3.5 terawatt-hours | 1.25 terawatt-hours | Slovak Republic |
| 2000s | 3.01 terawatt-hours | 4.43 terawatt-hours | 1.42 terawatt-hours | Slovak Republic |
| 2010s | 4.02 terawatt-hours | 4.27 terawatt-hours | 0.2531 terawatt-hours | Slovak Republic |
| 2020s | 3.35 terawatt-hours | 4.15 terawatt-hours | 0.8049 terawatt-hours | Slovak Republic |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy from hydropower, Bulgaria or Slovak Republic?
- Slovak Republic, at 2.96 terawatt-hours against 2.78 terawatt-hours in Bulgaria as of 2025.
- What is the difference in primary energy from hydropower between Bulgaria and Slovak Republic?
- 0.18 terawatt-hours, with Slovak Republic 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 primary energy from hydropower?
- Bulgaria ranks 52nd and Slovak Republic ranks 50th 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 Primary energy from hydropower. 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.