Romania vs Slovakia: Annual change in primary energy from hydropower
Romania
-2.06 terawatt-hours
in 2025
Slovakia
-1.87 terawatt-hours
in 2025
Romania rank
68th
Slovakia rank
66th
Annual change in primary energy from hydropower over time
- Romania
- Slovakia
How they compare
Slovakia currently reports -1.87 terawatt-hours against -2.06 terawatt-hours in Romania, a difference of 0.19 terawatt-hours.
The two have swapped places 33 times across 60 shared years of data; in 1966 it was Romania ahead.
Romania ranks 68th and Slovakia ranks 66th of 80 countries.
Across the 7 decades both report, Romania averaged higher in 5 and Slovakia in 2.
Head to head by decade
| Decade | Romania | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.303 terawatt-hours | -0.2298 terawatt-hours | 0.5328 terawatt-hours | Romania |
| 1970s | 0.9122 terawatt-hours | 0.058 terawatt-hours | 0.8542 terawatt-hours | Romania |
| 1980s | 0.2339 terawatt-hours | 0.0078 terawatt-hours | 0.2261 terawatt-hours | Romania |
| 1990s | 0.4612 terawatt-hours | 0.2512 terawatt-hours | 0.21 terawatt-hours | Romania |
| 2000s | -0.2756 terawatt-hours | -0.0106 terawatt-hours | 0.265 terawatt-hours | Slovakia |
| 2010s | 0.0047 terawatt-hours | -0.0012 terawatt-hours | 0.0058 terawatt-hours | Romania |
| 2020s | -0.5747 terawatt-hours | -0.2332 terawatt-hours | 0.3415 terawatt-hours | Slovakia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from hydropower, Romania or Slovakia?
- Slovakia, at -1.87 terawatt-hours against -2.06 terawatt-hours in Romania as of 2025.
- What is the difference in annual change in primary energy from hydropower between Romania and Slovakia?
- 0.19 terawatt-hours, with Slovakia ahead.
- How many years of comparable data are there for Romania and Slovakia?
- 60 years are reported by both, from 1966 to 2025.
- How do Romania and Slovakia rank globally for annual change in primary energy from hydropower?
- Romania ranks 68th and Slovakia ranks 66th of 80 countries.
- Where does this data come from?
- Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as Annual change in primary energy from hydropower. 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.