Bulgaria vs Iran: Primary energy use by source
Bulgaria
1.28 terawatt-hours
in 2025
Iran
1.17 terawatt-hours
in 2025
Bulgaria rank
46th
Iran rank
48th
Primary energy use by source over time
- Bulgaria
- Iran
How they compare
Bulgaria currently reports 1.28 terawatt-hours against 1.17 terawatt-hours in Iran, a difference of 0.11 terawatt-hours.
That makes Bulgaria's figure about 1.1 times Iran's.
The two have swapped places 1 time across 61 shared years of data; in 1965 it was Iran ahead.
Bulgaria ranks 46th and Iran ranks 48th of 79 countries.
Across the 7 decades both report, Bulgaria averaged higher in 2 and Iran in 2.
Head to head by decade
| Decade | Bulgaria | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1970s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1980s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1990s | 0 terawatt-hours | 0.0035 terawatt-hours | 0.0035 terawatt-hours | Iran |
| 2000s | 0.0431 terawatt-hours | 0.0934 terawatt-hours | 0.0502 terawatt-hours | Iran |
| 2010s | 1.25 terawatt-hours | 0.317 terawatt-hours | 0.9313 terawatt-hours | Bulgaria |
| 2020s | 1.44 terawatt-hours | 1.14 terawatt-hours | 0.2988 terawatt-hours | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy use by source, Bulgaria or Iran?
- Bulgaria, at 1.28 terawatt-hours against 1.17 terawatt-hours in Iran as of 2025.
- What is the difference in primary energy use by source between Bulgaria and Iran?
- 0.11 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Bulgaria and Iran?
- 61 years are reported by both, from 1965 to 2025.
- How do Bulgaria and Iran rank globally for primary energy use by source?
- Bulgaria ranks 46th and Iran ranks 48th of 79 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.