Iran vs United States: Fossil fuel supply by source
Iran
2,563 terawatt-hours
in 2025
United States
9,134 terawatt-hours
in 2025
Iran rank
5th
United States rank
1st
Fossil fuel supply by source over time
- Iran
- United States
How they compare
United States currently reports 9,134 terawatt-hours against 2,563 terawatt-hours in Iran, a difference of 6,571 terawatt-hours.
That makes United States's figure about 3.6 times Iran's.
Across all 61 years both countries report, United States has been ahead every year.
Iran ranks 5th and United States ranks 1st of 77 countries.
United States has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Iran | United States | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 8.91 terawatt-hours | 4,779 terawatt-hours | 4,770 terawatt-hours | United States |
| 1970s | 40.03 terawatt-hours | 5,594 terawatt-hours | 5,554 terawatt-hours | United States |
| 1980s | 91.27 terawatt-hours | 4,852 terawatt-hours | 4,760 terawatt-hours | United States |
| 1990s | 332.77 terawatt-hours | 5,751 terawatt-hours | 5,418 terawatt-hours | United States |
| 2000s | 959.69 terawatt-hours | 6,108 terawatt-hours | 5,149 terawatt-hours | United States |
| 2010s | 1,794 terawatt-hours | 7,329 terawatt-hours | 5,536 terawatt-hours | United States |
| 2020s | 2,437 terawatt-hours | 8,759 terawatt-hours | 6,322 terawatt-hours | United States |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher fossil fuel supply by source, Iran or United States?
- United States, at 9,134 terawatt-hours against 2,563 terawatt-hours in Iran as of 2025.
- What is the difference in fossil fuel supply by source between Iran and United States?
- 6,571 terawatt-hours, with United States ahead.
- How many years of comparable data are there for Iran and United States?
- 61 years are reported by both, from 1965 to 2025.
- How do Iran and United States rank globally for fossil fuel supply by source?
- Iran ranks 5th and United States ranks 1st of 77 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 Fossil fuel supply 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.