Bulgaria vs Slovakia: Hydropower generation by region
Bulgaria
2.78 terawatt-hours
in 2025
Slovakia
2.96 terawatt-hours
in 2025
Bulgaria rank
52nd
Slovakia rank
50th
Hydropower generation by region over time
- Bulgaria
- Slovakia
How they compare
Slovakia currently reports 2.96 terawatt-hours against 2.78 terawatt-hours in Bulgaria, a difference of 0.18 terawatt-hours.
That makes Slovakia'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 Slovakia ahead.
Bulgaria ranks 52nd and Slovakia ranks 50th of 80 countries.
Across the 7 decades both report, Bulgaria averaged higher in 3 and Slovakia in 4.
Head to head by decade
| Decade | Bulgaria | Slovakia | 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 | Slovakia |
| 2000s | 3.01 terawatt-hours | 4.43 terawatt-hours | 1.42 terawatt-hours | Slovakia |
| 2010s | 4.02 terawatt-hours | 4.27 terawatt-hours | 0.2531 terawatt-hours | Slovakia |
| 2020s | 3.35 terawatt-hours | 4.15 terawatt-hours | 0.8049 terawatt-hours | Slovakia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Bulgaria or Slovakia?
- Slovakia, at 2.96 terawatt-hours against 2.78 terawatt-hours in Bulgaria as of 2025.
- What is the difference in hydropower generation by region between Bulgaria and Slovakia?
- 0.18 terawatt-hours, with Slovakia ahead.
- How many years of comparable data are there for Bulgaria and Slovakia?
- 61 years are reported by both, from 1965 to 2025.
- How do Bulgaria and Slovakia rank globally for hydropower generation by region?
- Bulgaria ranks 52nd and Slovakia ranks 50th of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026) β with major processing by Our World in Data, published as Hydropower generation by region. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Figures are based on gross primary hydroelectric generation and do not account for cross-border electricity supply.