Iran vs Japan: Primary energy use
Iran
3,688 terawatt-hours
in 2025
Japan
4,578 terawatt-hours
in 2025
Iran rank
6th
Japan rank
5th
Primary energy use over time
- Iran
- Japan
How they compare
Japan currently reports 4,578 terawatt-hours against 3,688 terawatt-hours in Iran, a difference of 890 terawatt-hours.
That makes Japan's figure about 1.2 times Iran's.
Across all 61 years both countries report, Japan has been ahead every year.
Iran ranks 6th and Japan ranks 5th of 218 countries.
Japan has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Iran | Japan | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 113.88 terawatt-hours | 2,216 terawatt-hours | 2,102 terawatt-hours | Japan |
| 1970s | 295.7 terawatt-hours | 3,932 terawatt-hours | 3,636 terawatt-hours | Japan |
| 1980s | 555.53 terawatt-hours | 4,358 terawatt-hours | 3,803 terawatt-hours | Japan |
| 1990s | 1,039 terawatt-hours | 5,680 terawatt-hours | 4,642 terawatt-hours | Japan |
| 2000s | 1,883 terawatt-hours | 6,130 terawatt-hours | 4,248 terawatt-hours | Japan |
| 2010s | 2,793 terawatt-hours | 5,357 terawatt-hours | 2,565 terawatt-hours | Japan |
| 2020s | 3,526 terawatt-hours | 4,690 terawatt-hours | 1,164 terawatt-hours | Japan |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy use, Iran or Japan?
- Japan, at 4,578 terawatt-hours against 3,688 terawatt-hours in Iran as of 2025.
- What is the difference in primary energy use between Iran and Japan?
- 890 terawatt-hours, with Japan ahead.
- How many years of comparable data are there for Iran and Japan?
- 61 years are reported by both, from 1965 to 2025.
- How do Iran and Japan rank globally for primary energy use?
- Iran ranks 6th and Japan ranks 5th of 218 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as Primary energy use. 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.