Bulgaria vs Iran: Annual change in primary energy from nuclear
Bulgaria
-1.34 terawatt-hours
in 2025
Iran
-5 terawatt-hours
in 2025
Bulgaria rank
210th
Iran rank
212th
Annual change in primary energy from nuclear over time
- Bulgaria
- Iran
How they compare
Bulgaria currently reports -1.34 terawatt-hours against -5 terawatt-hours in Iran, a difference of 3.66 terawatt-hours.
The two have swapped places 23 times across 60 shared years of data; in 1966 it was Iran ahead.
Bulgaria ranks 210th and Iran ranks 212th of 219 countries.
Across the 7 decades both report, Bulgaria averaged higher in 3 and Iran in 3.
Head to head by decade
| Decade | Bulgaria | Iran | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1970s | 1.87 terawatt-hours | 0 terawatt-hours | 1.87 terawatt-hours | Bulgaria |
| 1980s | 2.54 terawatt-hours | 0 terawatt-hours | 2.54 terawatt-hours | Bulgaria |
| 1990s | 0.3782 terawatt-hours | 0 terawatt-hours | 0.3782 terawatt-hours | Bulgaria |
| 2000s | -0.1691 terawatt-hours | 0 terawatt-hours | 0.1691 terawatt-hours | Iran |
| 2010s | 0.3937 terawatt-hours | 1.94 terawatt-hours | 1.55 terawatt-hours | Iran |
| 2020s | -0.6166 terawatt-hours | -0.5163 terawatt-hours | 0.1004 terawatt-hours | Iran |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from nuclear, Bulgaria or Iran?
- Bulgaria, at -1.34 terawatt-hours against -5 terawatt-hours in Iran as of 2025.
- What is the difference in annual change in primary energy from nuclear between Bulgaria and Iran?
- 3.66 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 nuclear?
- Bulgaria ranks 210th and Iran ranks 212th of 219 countries.
- Where does this data come from?
- Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as Annual change in primary energy from nuclear. 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.