Finland vs Iran: Hydropower generation by region
Finland
12.44 terawatt-hours
in 2025
Iran
11.96 terawatt-hours
in 2025
Finland rank
34th
Iran rank
36th
Hydropower generation by region over time
- Finland
- Iran
How they compare
Finland currently reports 12.44 terawatt-hours against 11.96 terawatt-hours in Iran, a difference of 0.48 terawatt-hours.
The two have swapped places 10 times across 61 shared years of data; in 1965 it was Finland ahead.
Finland ranks 34th and Iran ranks 36th of 79 countries.
Across the 7 decades both report, Finland averaged higher in 5 and Iran in 2.
Head to head by decade
| Decade | Finland | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 10.12 terawatt-hours | 2 terawatt-hours | 8.12 terawatt-hours | Finland |
| 1970s | 10.84 terawatt-hours | 3.77 terawatt-hours | 7.07 terawatt-hours | Finland |
| 1980s | 12.87 terawatt-hours | 6.59 terawatt-hours | 6.28 terawatt-hours | Finland |
| 1990s | 12.93 terawatt-hours | 7.53 terawatt-hours | 5.4 terawatt-hours | Finland |
| 2000s | 13.26 terawatt-hours | 10.25 terawatt-hours | 3 terawatt-hours | Finland |
| 2010s | 14.15 terawatt-hours | 15.22 terawatt-hours | 1.07 terawatt-hours | Iran |
| 2020s | 14.52 terawatt-hours | 17.45 terawatt-hours | 2.93 terawatt-hours | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Finland or Iran?
- Finland, at 12.44 terawatt-hours against 11.96 terawatt-hours in Iran as of 2025.
- What is the difference in hydropower generation by region between Finland and Iran?
- 0.48 terawatt-hours, with Finland ahead.
- How many years of comparable data are there for Finland and Iran?
- 61 years are reported by both, from 1965 to 2025.
- How do Finland and Iran rank globally for hydropower generation by region?
- Finland ranks 34th and Iran ranks 36th 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.