Greece vs Slovakia: Hydropower generation by region
Greece
3.45 terawatt-hours
in 2025
Slovakia
2.96 terawatt-hours
in 2025
Greece rank
47th
Slovakia rank
49th
Hydropower generation by region over time
- Greece
- Slovakia
How they compare
Greece currently reports 3.45 terawatt-hours against 2.96 terawatt-hours in Slovakia, a difference of 0.49 terawatt-hours.
That makes Greece's figure about 1.2 times Slovakia's.
The two have swapped places 19 times across 61 shared years of data; in 1965 it was Slovakia ahead.
Greece ranks 47th and Slovakia ranks 49th of 79 countries.
Across the 7 decades both report, Greece averaged higher in 3 and Slovakia in 4.
Head to head by decade
| Decade | Greece | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 1.52 terawatt-hours | 1.83 terawatt-hours | 0.3086 terawatt-hours | Slovakia |
| 1970s | 2.49 terawatt-hours | 1.91 terawatt-hours | 0.5799 terawatt-hours | Greece |
| 1980s | 2.87 terawatt-hours | 1.88 terawatt-hours | 0.9884 terawatt-hours | Greece |
| 1990s | 3.2 terawatt-hours | 3.5 terawatt-hours | 0.2939 terawatt-hours | Slovakia |
| 2000s | 4.02 terawatt-hours | 4.43 terawatt-hours | 0.4118 terawatt-hours | Slovakia |
| 2010s | 5.21 terawatt-hours | 4.27 terawatt-hours | 0.9362 terawatt-hours | Greece |
| 2020s | 3.99 terawatt-hours | 4.15 terawatt-hours | 0.1615 terawatt-hours | Slovakia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Greece or Slovakia?
- Greece, at 3.45 terawatt-hours against 2.96 terawatt-hours in Slovakia as of 2025.
- What is the difference in hydropower generation by region between Greece and Slovakia?
- 0.49 terawatt-hours, with Greece ahead.
- How many years of comparable data are there for Greece and Slovakia?
- 61 years are reported by both, from 1965 to 2025.
- How do Greece and Slovakia rank globally for hydropower generation by region?
- Greece ranks 47th and Slovakia ranks 49th of 79 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 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.