Iran vs Sri Lanka: Hydropower generation by region
Iran
11.96 terawatt-hours
in 2025
Sri Lanka
7.95 terawatt-hours
in 2025
Iran rank
36th
Sri Lanka rank
39th
Hydropower generation by region over time
- Iran
- Sri Lanka
How they compare
Iran currently reports 11.96 terawatt-hours against 7.95 terawatt-hours in Sri Lanka, a difference of 4.01 terawatt-hours.
That makes Iran's figure about 1.5 times Sri Lanka's.
Across all 61 years both countries report, Iran has been ahead every year.
Iran ranks 36th and Sri Lanka ranks 39th of 79 countries.
Iran has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Iran | Sri Lanka | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 2 terawatt-hours | 0.4394 terawatt-hours | 1.56 terawatt-hours | Iran |
| 1970s | 3.77 terawatt-hours | 1.03 terawatt-hours | 2.74 terawatt-hours | Iran |
| 1980s | 6.59 terawatt-hours | 2.06 terawatt-hours | 4.53 terawatt-hours | Iran |
| 1990s | 7.53 terawatt-hours | 3.64 terawatt-hours | 3.9 terawatt-hours | Iran |
| 2000s | 10.25 terawatt-hours | 3.54 terawatt-hours | 6.71 terawatt-hours | Iran |
| 2010s | 15.22 terawatt-hours | 5.05 terawatt-hours | 10.17 terawatt-hours | Iran |
| 2020s | 17.45 terawatt-hours | 6.58 terawatt-hours | 10.86 terawatt-hours | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher hydropower generation by region, Iran or Sri Lanka?
- Iran, at 11.96 terawatt-hours against 7.95 terawatt-hours in Sri Lanka as of 2025.
- What is the difference in hydropower generation by region between Iran and Sri Lanka?
- 4.01 terawatt-hours, with Iran ahead.
- How many years of comparable data are there for Iran and Sri Lanka?
- 61 years are reported by both, from 1965 to 2025.
- How do Iran and Sri Lanka rank globally for hydropower generation by region?
- Iran ranks 36th and Sri Lanka ranks 39th 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.