Annual percentage change in primary energy from nuclear in Bulgaria
Bulgaria: Annual percentage change in primary energy from nuclear was -2.8% in 2025. ◆ Volatile
Annual percentage change in primary energy from nuclear in Bulgaria, 1975–2025
Source: Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data. Measured in %.
Analysis
Bulgaria recorded -2.8% for annual percentage change in primary energy from nuclear in 2025.
That represents a change of down 17.4% on the previous year and up 8.0% over ten years.
Over the whole period, annual percentage change in primary energy from nuclear in Bulgaria peaked at 175.2% in 1975 and was at its lowest, -24.9%, in 2007.
Bulgaria ranks 24th of 35 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1970s | 58.7% | 0.4% | 175.2% | 5 |
| 1980s | 10.1% | -9.1% | 47.9% | 10 |
| 1990s | 1.3% | -12.4% | 21.0% | 10 |
| 2000s | 0.4% | -24.9% | 14.9% | 10 |
| 2010s | 1.0% | -10.2% | 12.0% | 10 |
| 2020s | -1.3% | -2.8% | 0.4% | 6 |
Countries ranked near Bulgaria
More energy & mining data for Bulgaria
- Fuel imports 12.3% (2024)
- Ores and metals imports 9.8% (2024)
- Ores and metals exports 15.6% (2024)
- Gas production 0.0968 terawatt-hours (2024)
- Fossil fuel production per person, by fuel 14.32 kilowatt-hours per person (2024)
- Fossil fuel production by fuel 0.0968 terawatt-hours (2024)
- Gas production per person 14.32 kilowatt-hours per person (2024)
- Fuel exports 7.8% (2024)
- Electric power transmission and distribution losses 5.9% (2023)
- Share of dietary energy supply from carbohydrates vs gdp per capita 46.56 (2023)
Frequently asked questions
- What is annual percentage change in primary energy from nuclear in Bulgaria?
- Annual percentage change in primary energy from nuclear in Bulgaria was -2.8% in 2025, according to Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data.
- What is the highest annual percentage change in primary energy from nuclear recorded in Bulgaria?
- The highest recorded value was 175.2% in 1975.
- What is the lowest annual percentage change in primary energy from nuclear recorded in Bulgaria?
- The lowest recorded value was -24.9% in 2007.
- How does Bulgaria rank for annual percentage change in primary energy from nuclear?
- Bulgaria ranks 24th out of 35 countries with data for 2025.
- Is annual percentage change in primary energy from nuclear rising or falling in Bulgaria?
- Over the last ten years it is up 8.0%. The long-run trend across the full record is volatile.
- Where does this Bulgaria data come from?
- The figures come from Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as part of Annual percentage change in primary energy from nuclear. Statizoid updates them automatically from the source API.
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About this data
Percentage change in total energy supply relative to the previous year.