Share of primary energy from nuclear in Bulgaria
Bulgaria: Share of primary energy from nuclear was 24.0% in 2025. ◆ Volatile
Share of primary energy from nuclear in Bulgaria, 1965–2025
Source: Energy Institute – Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data. Measured in %.
Analysis
The most recent figure for share of primary energy from nuclear in Bulgaria is 24.0%, measured in 2025.
Compared with earlier readings it is down 4.8% on the previous year and up 11.9% over ten years.
Over the whole period, share of primary energy from nuclear in Bulgaria peaked at 28.1% in 2002 and was at its lowest, 0.0%, in 1965.
Bulgaria ranks 7th of 216 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Share of primary energy from nuclear in Bulgaria, year by year
| Year | % | Change |
|---|---|---|
| 1965 | 0.0% | — |
| 1966 | 0.0% | — |
| 1967 | 0.0% | — |
| 1968 | 0.0% | — |
| 1969 | 0.0% | — |
| 1970 | 0.0% | — |
| 1971 | 0.0% | — |
| 1972 | 0.0% | — |
| 1973 | 0.0% | — |
| 1974 | 1.2% | — |
| 1975 | 3.0% | +149.0% |
| 1976 | 5.5% | +84.6% |
| 1977 | 6.1% | +12.2% |
| 1978 | 5.9% | -3.5% |
| 1979 | 6.0% | +0.9% |
| 1980 | 5.7% | -5.4% |
| 1981 | 8.5% | +49.8% |
| 1982 | 9.7% | +14.5% |
| 1983 | 11.1% | +13.9% |
| 1984 | 11.5% | +3.9% |
| 1985 | 11.9% | +3.3% |
| 1986 | 10.7% | -9.8% |
| 1987 | 11.0% | +2.3% |
| 1988 | 13.8% | +25.7% |
| 1989 | 12.7% | -8.2% |
| 1990 | 13.7% | +8.4% |
| 1991 | 15.3% | +11.7% |
| 1992 | 14.3% | -7.0% |
| 1993 | 16.1% | +13.0% |
| 1994 | 18.3% | +13.6% |
| 1995 | 19.2% | +5.2% |
| 1996 | 20.3% | +5.5% |
| 1997 | 21.1% | +3.7% |
| 1998 | 20.9% | -0.6% |
| 1999 | 22.3% | +6.4% |
| 2000 | 25.5% | +14.5% |
| 2001 | 26.3% | +2.9% |
| 2002 | 28.1% | +6.8% |
| 2003 | 23.4% | -16.7% |
| 2004 | 23.5% | +0.7% |
| 2005 | 24.2% | +2.9% |
| 2006 | 24.7% | +2.1% |
| 2007 | 19.1% | -22.7% |
| 2008 | 20.8% | +8.5% |
| 2009 | 23.0% | +10.9% |
| 2010 | 22.3% | -3.0% |
| 2011 | 22.1% | -1.2% |
| 2012 | 22.7% | +2.9% |
| 2013 | 22.3% | -1.6% |
| 2014 | 23.3% | +4.5% |
| 2015 | 21.5% | -8.0% |
| 2016 | 22.9% | +6.5% |
| 2017 | 21.8% | -4.6% |
| 2018 | 22.9% | +4.9% |
| 2019 | 23.9% | +4.3% |
| 2020 | 25.9% | +8.7% |
| 2021 | 23.0% | -11.5% |
| 2022 | 22.1% | -3.8% |
| 2023 | 25.4% | +15.2% |
| 2024 | 25.2% | -0.9% |
| 2025 | 24.0% | -4.8% |
Biggest year-on-year movements
Years where Share of primary energy from nuclear in Bulgaria changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1975 | +149.0% | 1.2% | 3.0% |
| 1976 | +84.6% | 3.0% | 5.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 0.0% | 0.0% | 0.0% | 5 |
| 1970s | 2.8% | 0.0% | 6.1% | 10 |
| 1980s | 10.6% | 5.7% | 13.8% | 10 |
| 1990s | 18.2% | 13.7% | 22.3% | 10 |
| 2000s | 23.9% | 19.1% | 28.1% | 10 |
| 2010s | 22.6% | 21.5% | 23.9% | 10 |
| 2020s | 24.3% | 22.1% | 25.9% | 6 |
Countries ranked near Bulgaria
More energy & mining data for Bulgaria
- Fossil fuel consumption by fuel, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, annual growth rate 2.05 % change on previous year (2025)
- Coal consumption, per capita 0 terawatt-hours per person (2025)
- Coal consumption, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per capita 0 terawatt-hours per person (2025)
- Coal production, per capita 0 terawatt-hours per person (2025)
- Coal production, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Fossil fuel consumption by fuel, per capita 0 terawatt-hours per person (2025)
- Fuel imports 12.3% (2024)
Frequently asked questions
- What is share of primary energy from nuclear in Bulgaria?
- Share of primary energy from nuclear in Bulgaria was 24.0% in 2025, according to Energy Institute – Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data.
- What is the highest share of primary energy from nuclear recorded in Bulgaria?
- The highest recorded value was 28.1% in 2002.
- What is the lowest share of primary energy from nuclear recorded in Bulgaria?
- The lowest recorded value was 0.0% in 1965.
- How does Bulgaria rank for share of primary energy from nuclear?
- Bulgaria ranks 7th out of 216 countries with data for 2025.
- Is share of primary energy from nuclear rising or falling in Bulgaria?
- Over the last ten years it is up 11.9%. 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); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as part of Share of primary energy from nuclear. Statizoid updates them automatically from the source API.
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About this data
Measured as a percentage of total energy supply.