Annual change in primary energy from nuclear in Bulgaria
Bulgaria: Annual change in primary energy from nuclear was -1.34 terawatt-hours in 2025. ◆ Volatile
Latest (2025)
-1.34 terawatt-hours
Change on year
down 14.6%
World rank
210th
of 219 countries
All-time high
10.89 terawatt-hours
in 1988
All-time low
-14.7 terawatt-hours
in 2007
Years of data
60
1966–2025
Annual change in primary energy from nuclear in Bulgaria, 1966–2025
Source: Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in terawatt-hours.
Analysis
In 2025, annual change in primary energy from nuclear in Bulgaria stood at -1.34 terawatt-hours.
Compared with earlier readings it is down 14.6% on the previous year and up 8.5% over ten years.
Over the whole period, annual change in primary energy from nuclear in Bulgaria peaked at 10.89 terawatt-hours in 1988 and was at its lowest, -14.7 terawatt-hours, in 2007.
Bulgaria ranks 210th of 219 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Annual change in primary energy from nuclear in Bulgaria, year by year
| Year | terawatt-hours | Change |
|---|---|---|
| 1966 | 0 terawatt-hours | — |
| 1967 | 0 terawatt-hours | — |
| 1968 | 0 terawatt-hours | — |
| 1969 | 0 terawatt-hours | — |
| 1970 | 0 terawatt-hours | — |
| 1971 | 0 terawatt-hours | — |
| 1972 | 0 terawatt-hours | — |
| 1973 | 0 terawatt-hours | — |
| 1974 | 2.81 terawatt-hours | — |
| 1975 | 4.93 terawatt-hours | +75.2% |
| 1976 | 7.38 terawatt-hours | +49.8% |
| 1977 | 2.71 terawatt-hours | -63.2% |
| 1978 | 0.0788 terawatt-hours | -97.1% |
| 1979 | 0.8182 terawatt-hours | +938.5% |
| 1980 | -0.0455 terawatt-hours | -105.6% |
| 1981 | 8.95 terawatt-hours | -19793.6% |
| 1982 | 4.93 terawatt-hours | -44.9% |
| 1983 | 4.76 terawatt-hours | -3.4% |
| 1984 | 1.26 terawatt-hours | -73.5% |
| 1985 | 1.2 terawatt-hours | -5.0% |
| 1986 | -3.22 terawatt-hours | -367.9% |
| 1987 | 1.11 terawatt-hours | -134.5% |
| 1988 | 10.89 terawatt-hours | +882.0% |
| 1989 | -4.44 terawatt-hours | -140.7% |
| 1990 | 0.3 terawatt-hours | -106.8% |
| 1991 | -4.49 terawatt-hours | -1596.0% |
| 1992 | -4.95 terawatt-hours | +10.2% |
| 1993 | 7.34 terawatt-hours | -248.3% |
| 1994 | 4.13 terawatt-hours | -43.7% |
| 1995 | 5.84 terawatt-hours | +41.4% |
| 1996 | 2.49 terawatt-hours | -57.4% |
| 1997 | -1 terawatt-hours | -140.3% |
| 1998 | -2.58 terawatt-hours | +157.4% |
| 1999 | -3.29 terawatt-hours | +27.3% |
| 2000 | 7.16 terawatt-hours | -317.9% |
| 2001 | 4.17 terawatt-hours | -41.8% |
| 2002 | 2.03 terawatt-hours | -51.3% |
| 2003 | -8.92 terawatt-hours | -539.8% |
| 2004 | -1.41 terawatt-hours | -84.2% |
| 2005 | 5.57 terawatt-hours | -495.3% |
| 2006 | 2.55 terawatt-hours | -54.3% |
| 2007 | -14.7 terawatt-hours | -677.4% |
| 2008 | 3.4 terawatt-hours | -123.1% |
| 2009 | -1.54 terawatt-hours | -145.4% |
| 2010 | -0.0212 terawatt-hours | -98.6% |
| 2011 | 3.23 terawatt-hours | -15316.1% |
| 2012 | -1.6 terawatt-hours | -149.7% |
| 2013 | -4.89 terawatt-hours | +205.1% |
| 2014 | 5.14 terawatt-hours | -205.1% |
| 2015 | -1.47 terawatt-hours | -128.5% |
| 2016 | 1.19 terawatt-hours | -181.2% |
| 2017 | -0.6985 terawatt-hours | -158.7% |
| 2018 | 1.76 terawatt-hours | -351.5% |
| 2019 | 1.3 terawatt-hours | -25.8% |
| 2020 | 0.2136 terawatt-hours | -83.6% |
| 2021 | -0.4208 terawatt-hours | -297.0% |
| 2022 | -0.0754 terawatt-hours | -82.1% |
| 2023 | -0.9053 terawatt-hours | +1100.9% |
| 2024 | -1.17 terawatt-hours | +29.3% |
| 2025 | -1.34 terawatt-hours | +14.6% |
Biggest year-on-year movements
Years where Annual change in 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 |
|---|---|---|---|
| 1981 | +19793.6% | -0.0455 terawatt-hours | 8.95 terawatt-hours |
| 2011 | +15316.1% | -0.0212 terawatt-hours | 3.23 terawatt-hours |
| 1991 | -1596.0% | 0.3 terawatt-hours | -4.49 terawatt-hours |
| 2023 | -1100.9% | -0.0754 terawatt-hours | -0.9053 terawatt-hours |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | 4 |
| 1970s | 1.87 terawatt-hours | 0 terawatt-hours | 7.38 terawatt-hours | 10 |
| 1980s | 2.54 terawatt-hours | -4.44 terawatt-hours | 10.89 terawatt-hours | 10 |
| 1990s | 0.3782 terawatt-hours | -4.95 terawatt-hours | 7.34 terawatt-hours | 10 |
| 2000s | -0.1691 terawatt-hours | -14.7 terawatt-hours | 7.16 terawatt-hours | 10 |
| 2010s | 0.3937 terawatt-hours | -4.89 terawatt-hours | 5.14 terawatt-hours | 10 |
| 2020s | -0.6166 terawatt-hours | -1.34 terawatt-hours | 0.2136 terawatt-hours | 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 annual change in primary energy from nuclear in Bulgaria?
- Annual change in primary energy from nuclear in Bulgaria was -1.34 terawatt-hours in 2025, according to Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data.
- What is the highest annual change in primary energy from nuclear recorded in Bulgaria?
- The highest recorded value was 10.89 terawatt-hours in 1988.
- What is the lowest annual change in primary energy from nuclear recorded in Bulgaria?
- The lowest recorded value was -14.7 terawatt-hours in 2007.
- How does Bulgaria rank for annual change in primary energy from nuclear?
- Bulgaria ranks 210th out of 219 countries with data for 2025.
- Is annual change in primary energy from nuclear rising or falling in Bulgaria?
- Over the last ten years it is up 8.5%. 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) – with major processing by Our World in Data, published as part of Annual change in primary energy from nuclear. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 60 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.