Iceland vs Portugal: Hydropower generation by region
Iceland
13.16 terawatt-hours
in 2025
Portugal
14.87 terawatt-hours
in 2025
Iceland rank
32nd
Portugal rank
29th
Hydropower generation by region over time
- Iceland
- Portugal
How they compare
Portugal currently reports 14.87 terawatt-hours against 13.16 terawatt-hours in Iceland, a difference of 1.71 terawatt-hours.
That makes Portugal's figure about 1.1 times Iceland's.
The two have swapped places 10 times across 61 shared years of data; in 1965 it was Portugal ahead.
Iceland ranks 32nd and Portugal ranks 29th of 79 countries.
Across the 7 decades both report, Iceland averaged higher in 2 and Portugal in 5.
Head to head by decade
| Decade | Iceland | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.6952 terawatt-hours | 5.25 terawatt-hours | 4.55 terawatt-hours | Portugal |
| 1970s | 2.16 terawatt-hours | 7.74 terawatt-hours | 5.58 terawatt-hours | Portugal |
| 1980s | 3.67 terawatt-hours | 8.42 terawatt-hours | 4.75 terawatt-hours | Portugal |
| 1990s | 4.79 terawatt-hours | 9.85 terawatt-hours | 5.06 terawatt-hours | Portugal |
| 2000s | 8.15 terawatt-hours | 9.95 terawatt-hours | 1.8 terawatt-hours | Portugal |
| 2010s | 13.18 terawatt-hours | 11.41 terawatt-hours | 1.77 terawatt-hours | Iceland |
| 2020s | 13.69 terawatt-hours | 12.06 terawatt-hours | 1.63 terawatt-hours | Iceland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Iceland or Portugal?
- Portugal, at 14.87 terawatt-hours against 13.16 terawatt-hours in Iceland as of 2025.
- What is the difference in hydropower generation by region between Iceland and Portugal?
- 1.71 terawatt-hours, with Portugal ahead.
- How many years of comparable data are there for Iceland and Portugal?
- 61 years are reported by both, from 1965 to 2025.
- How do Iceland and Portugal rank globally for hydropower generation by region?
- Iceland ranks 32nd and Portugal ranks 29th 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.