Year-to-year change in primary energy from fossil fuels vs. in Bulgaria
Bulgaria: Year-to-year change in primary energy from fossil fuels vs. was 0.1847 terawatt-hours in 2025. ◆ Volatile
Latest (2025)
0.1847 terawatt-hours
Change on year
up 196.9%
World rank
48th
of 80 countries
All-time high
10.95 terawatt-hours
in 1988
All-time low
-16.05 terawatt-hours
in 2007
Years of data
60
1966–2025
Year-to-year change in primary energy from fossil fuels vs. low-carbon energy 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
The most recent figure for year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Bulgaria is 0.1847 terawatt-hours, measured in 2025.
That represents a change of up 196.9% on the previous year and down 58.9% over ten years.
Over the whole period, year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Bulgaria peaked at 10.95 terawatt-hours in 1988 and was at its lowest, -16.05 terawatt-hours, in 2007.
Bulgaria ranks 48th of 80 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.
Year-to-year change in primary energy from fossil fuels vs. in Bulgaria, year by year
| Year | terawatt-hours | Change |
|---|---|---|
| 1966 | 0.01 terawatt-hours | — |
| 1967 | 0.012 terawatt-hours | +20.0% |
| 1968 | -0.717 terawatt-hours | -6075.0% |
| 1969 | 0.534 terawatt-hours | -174.5% |
| 1970 | 0.313 terawatt-hours | -41.4% |
| 1971 | 0.018 terawatt-hours | -94.2% |
| 1972 | -0.075 terawatt-hours | -516.7% |
| 1973 | 0.475 terawatt-hours | -733.3% |
| 1974 | 2.32 terawatt-hours | +388.9% |
| 1975 | 5.3 terawatt-hours | +128.3% |
| 1976 | 7.88 terawatt-hours | +48.7% |
| 1977 | 3.29 terawatt-hours | -58.3% |
| 1978 | -0.5412 terawatt-hours | -116.5% |
| 1979 | 1.22 terawatt-hours | -325.5% |
| 1980 | 0.3565 terawatt-hours | -70.8% |
| 1981 | 8.86 terawatt-hours | +2384.0% |
| 1982 | 4.36 terawatt-hours | -50.7% |
| 1983 | 5.07 terawatt-hours | +16.1% |
| 1984 | 1.17 terawatt-hours | -76.9% |
| 1985 | 0.177 terawatt-hours | -84.9% |
| 1986 | -3.13 terawatt-hours | -1866.2% |
| 1987 | 1.32 terawatt-hours | -142.2% |
| 1988 | 10.95 terawatt-hours | +729.5% |
| 1989 | -4.34 terawatt-hours | -139.6% |
| 1990 | -0.761 terawatt-hours | -82.5% |
| 1991 | -3.85 terawatt-hours | +405.9% |
| 1992 | -5.31 terawatt-hours | +37.9% |
| 1993 | 7.22 terawatt-hours | -236.0% |
| 1994 | 3.64 terawatt-hours | -49.6% |
| 1995 | 6.71 terawatt-hours | +84.6% |
| 1996 | 3.2 terawatt-hours | -52.3% |
| 1997 | -1.17 terawatt-hours | -136.4% |
| 1998 | -2.24 terawatt-hours | +91.8% |
| 1999 | -3.62 terawatt-hours | +61.9% |
| 2000 | 7.06 terawatt-hours | -294.9% |
| 2001 | 3.19 terawatt-hours | -54.9% |
| 2002 | 2.49 terawatt-hours | -21.8% |
| 2003 | -8.04 terawatt-hours | -422.4% |
| 2004 | -1.26 terawatt-hours | -84.3% |
| 2005 | 6.73 terawatt-hours | -632.5% |
| 2006 | 2.48 terawatt-hours | -63.2% |
| 2007 | -16.05 terawatt-hours | -748.2% |
| 2008 | 3.51 terawatt-hours | -121.8% |
| 2009 | -0.7686 terawatt-hours | -121.9% |
| 2010 | 2.24 terawatt-hours | -391.7% |
| 2011 | 1.41 terawatt-hours | -37.3% |
| 2012 | 0.5523 terawatt-hours | -60.7% |
| 2013 | -2.84 terawatt-hours | -613.3% |
| 2014 | 5.79 terawatt-hours | -304.2% |
| 2015 | 0.449 terawatt-hours | -92.2% |
| 2016 | -0.1587 terawatt-hours | -135.4% |
| 2017 | -1.49 terawatt-hours | +840.9% |
| 2018 | 7.37 terawatt-hours | -593.5% |
| 2019 | 0.0915 terawatt-hours | -98.8% |
| 2020 | -0.1286 terawatt-hours | -240.6% |
| 2021 | 4.22 terawatt-hours | -3385.6% |
| 2022 | -1.25 terawatt-hours | -129.6% |
| 2023 | -1.38 terawatt-hours | +10.2% |
| 2024 | -0.1907 terawatt-hours | -86.2% |
| 2025 | 0.1847 terawatt-hours | -196.9% |
Bulgaria compared with similar countries
- Bulgaria's 0.1847 terawatt-hours is below the median for high income countries, which is 0.5633 terawatt-hours, 33% of the median. (47 countries reporting)
- Bulgaria's 0.1847 terawatt-hours is above the median for Europe & Central Asia, which is 0.1847 terawatt-hours, 1.0× the median. (39 countries reporting)
Biggest year-on-year movements
Years where Year-to-year change in primary energy from fossil fuels vs. 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 |
|---|---|---|---|
| 1968 | -6075.0% | 0.012 terawatt-hours | -0.717 terawatt-hours |
| 2021 | +3385.6% | -0.1286 terawatt-hours | 4.22 terawatt-hours |
| 1981 | +2384.0% | 0.3565 terawatt-hours | 8.86 terawatt-hours |
| 1986 | -1866.2% | 0.177 terawatt-hours | -3.13 terawatt-hours |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | -0.0402 terawatt-hours | -0.717 terawatt-hours | 0.534 terawatt-hours | 4 |
| 1970s | 2.02 terawatt-hours | -0.5412 terawatt-hours | 7.88 terawatt-hours | 10 |
| 1980s | 2.48 terawatt-hours | -4.34 terawatt-hours | 10.95 terawatt-hours | 10 |
| 1990s | 0.3823 terawatt-hours | -5.31 terawatt-hours | 7.22 terawatt-hours | 10 |
| 2000s | -0.0667 terawatt-hours | -16.05 terawatt-hours | 7.06 terawatt-hours | 10 |
| 2010s | 1.34 terawatt-hours | -2.84 terawatt-hours | 7.37 terawatt-hours | 10 |
| 2020s | 0.2428 terawatt-hours | -1.38 terawatt-hours | 4.22 terawatt-hours | 6 |
Countries ranked near Bulgaria
More climate change data for Bulgaria
- Nutrient nitrogen N (total) — Synthetic fertilizers (Agricultural) 176.16 million kg (2050)
- Emissions from livestock — Emissions (CO2eq) 2,923 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 704.34 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 2,219 kt (2050)
- Emissions from livestock — Emissions 2.66 kt (2050)
- Emissions from livestock — Emissions 79.24 kt (2050)
- Emissions from crops — Emissions (CO2eq) 1,439 kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 1,346 kt (2050)
- Emissions from crops — Emissions (CO2eq) from CH4 92.96 kt (2050)
- Emissions from crops — Emissions 5.08 kt (2050)
Frequently asked questions
- What is year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Bulgaria?
- Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Bulgaria was 0.1847 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 year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Bulgaria?
- The highest recorded value was 10.95 terawatt-hours in 1988.
- What is the lowest year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Bulgaria?
- The lowest recorded value was -16.05 terawatt-hours in 2007.
- How does Bulgaria rank for year-to-year change in primary energy from fossil fuels vs. low-carbon energy?
- Bulgaria ranks 48th out of 80 countries with data for 2025.
- Is year-to-year change in primary energy from fossil fuels vs. low-carbon energy rising or falling in Bulgaria?
- Over the last ten years it is down 58.9%. 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) – with major processing by Our World in Data, published as part of Year-to-year change in primary energy from fossil fuels vs. low-carbon energy. 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.