Iran vs Sri Lanka: Primary energy use by source
Iran
18.83 terawatt-hours
in 2025
Sri Lanka
15.24 terawatt-hours
in 2025
Iran rank
44th
Sri Lanka rank
47th
Primary energy use by source over time
- Iran
- Sri Lanka
How they compare
Iran currently reports 18.83 terawatt-hours against 15.24 terawatt-hours in Sri Lanka, a difference of 3.59 terawatt-hours.
That makes Iran's figure about 1.2 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 44th and Sri Lanka ranks 47th of 78 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 | 3.01 terawatt-hours | 0 terawatt-hours | 3.01 terawatt-hours | Iran |
| 1970s | 9.38 terawatt-hours | 0.0085 terawatt-hours | 9.37 terawatt-hours | Iran |
| 1980s | 12.01 terawatt-hours | 0.1332 terawatt-hours | 11.88 terawatt-hours | Iran |
| 1990s | 12.27 terawatt-hours | 0.0038 terawatt-hours | 12.27 terawatt-hours | Iran |
| 2000s | 15.27 terawatt-hours | 0.4048 terawatt-hours | 14.87 terawatt-hours | Iran |
| 2010s | 12.72 terawatt-hours | 10.28 terawatt-hours | 2.44 terawatt-hours | Iran |
| 2020s | 19.75 terawatt-hours | 17.05 terawatt-hours | 2.7 terawatt-hours | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy use by source, Iran or Sri Lanka?
- Iran, at 18.83 terawatt-hours against 15.24 terawatt-hours in Sri Lanka as of 2025.
- What is the difference in primary energy use by source between Iran and Sri Lanka?
- 3.59 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 use by source?
- Iran ranks 44th and Sri Lanka ranks 47th of 78 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as Primary energy use by source. 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.