Bulgaria vs Iran: Annual change in primary energy from solar
Bulgaria
1.34 terawatt-hours
in 2025
Iran
1.23 terawatt-hours
in 2025
Bulgaria rank
29th
Iran rank
30th
Annual change in primary energy from solar over time
- Bulgaria
- Iran
How they compare
Bulgaria currently reports 1.34 terawatt-hours against 1.23 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 5 times across 60 shared years of data; in 1966 it was Iran ahead.
Bulgaria ranks 29th and Iran ranks 30th of 77 countries.
Bulgaria has averaged higher in every one of the 7 decades both report.
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 terawatt-hours | 0 terawatt-hours | — |
| 2000s | 0.0003 terawatt-hours | 0 terawatt-hours | 0.0003 terawatt-hours | Bulgaria |
| 2010s | 0.1414 terawatt-hours | 0.051 terawatt-hours | 0.0904 terawatt-hours | Bulgaria |
| 2020s | 0.9018 terawatt-hours | 0.282 terawatt-hours | 0.6198 terawatt-hours | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from solar, Bulgaria or Iran?
- Bulgaria, at 1.34 terawatt-hours against 1.23 terawatt-hours in Iran as of 2025.
- What is the difference in annual change in primary energy from solar between Bulgaria and Iran?
- 0.11 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Bulgaria and Iran?
- 60 years are reported by both, from 1966 to 2025.
- How do Bulgaria and Iran rank globally for annual change in primary energy from solar?
- Bulgaria ranks 29th and Iran ranks 30th of 77 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 Annual change in primary energy from solar. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.