Greece vs Slovenia: Hydropower generation by region
Greece
3.45 terawatt-hours
in 2025
Slovenia
3.99 terawatt-hours
in 2025
Greece rank
48th
Slovenia rank
46th
Hydropower generation by region over time
- Greece
- Slovenia
How they compare
Slovenia currently reports 3.99 terawatt-hours against 3.45 terawatt-hours in Greece, a difference of 0.54 terawatt-hours.
That makes Slovenia's figure about 1.2 times Greece's.
The two have swapped places 10 times across 36 shared years of data; in 1990 it was Slovenia ahead.
Greece ranks 48th and Slovenia ranks 46th of 80 countries.
Across the 4 decades both report, Greece averaged higher in 2 and Slovenia in 2.
Head to head by decade
| Decade | Greece | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 3.2 terawatt-hours | 3.36 terawatt-hours | 0.1619 terawatt-hours | Slovenia |
| 2000s | 4.02 terawatt-hours | 3.7 terawatt-hours | 0.3121 terawatt-hours | Greece |
| 2010s | 5.21 terawatt-hours | 4.41 terawatt-hours | 0.7987 terawatt-hours | Greece |
| 2020s | 3.99 terawatt-hours | 4.52 terawatt-hours | 0.5321 terawatt-hours | Slovenia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Greece or Slovenia?
- Slovenia, at 3.99 terawatt-hours against 3.45 terawatt-hours in Greece as of 2025.
- What is the difference in hydropower generation by region between Greece and Slovenia?
- 0.54 terawatt-hours, with Slovenia ahead.
- How many years of comparable data are there for Greece and Slovenia?
- 36 years are reported by both, from 1990 to 2025.
- How do Greece and Slovenia rank globally for hydropower generation by region?
- Greece ranks 48th and Slovenia ranks 46th 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.