Iran vs Sri Lanka: Primary energy from hydropower
Iran
11.96 terawatt-hours
in 2025
Sri Lanka
7.95 terawatt-hours
in 2025
Iran rank
37th
Sri Lanka rank
40th
Primary energy from hydropower 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.
The two have swapped places 2 times across 61 shared years of data; in 1965 it was Iran ahead.
Iran ranks 37th and Sri Lanka ranks 40th of 80 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 | 15.14 terawatt-hours | 6.58 terawatt-hours | 8.56 terawatt-hours | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy from hydropower, 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 primary energy from hydropower 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 primary energy from hydropower?
- Iran ranks 37th and Sri Lanka ranks 40th of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) β with major processing by Our World in Data, published as Primary energy from hydropower. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured in terawatt-hours of total energy supply.