Annual change in primary energy from hydropower in Bulgaria
Bulgaria: Annual change in primary energy from hydropower was -0.0045 terawatt-hours in 2025. ◆ Volatile
Latest (2025)
-0.0045 terawatt-hours
Change on year
up 98.5%
World rank
37th
of 80 countries
All-time high
2.32 terawatt-hours
in 2018
All-time low
-2.22 terawatt-hours
in 2019
Years of data
60
1966–2025
Annual change in primary energy from hydropower 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 annual change in primary energy from hydropower in Bulgaria is -0.0045 terawatt-hours, measured in 2025.
Compared with earlier readings it is up 98.5% on the previous year and down 100.4% over ten years.
Over the whole period, annual change in primary energy from hydropower in Bulgaria peaked at 2.32 terawatt-hours in 2018 and was at its lowest, -2.22 terawatt-hours, in 2019.
That places Bulgaria 37th out of 80 countries with data for 2025, putting it in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Annual change in primary energy from hydropower 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 | -0.49 terawatt-hours | -203.2% |
| 1975 | 0.373 terawatt-hours | -176.1% |
| 1976 | 0.501 terawatt-hours | +34.3% |
| 1977 | 0.575 terawatt-hours | +14.8% |
| 1978 | -0.62 terawatt-hours | -207.8% |
| 1979 | 0.402 terawatt-hours | -164.8% |
| 1980 | 0.402 terawatt-hours | +0.0% |
| 1981 | -0.095 terawatt-hours | -123.6% |
| 1982 | -0.568 terawatt-hours | +497.9% |
| 1983 | 0.303 terawatt-hours | -153.3% |
| 1984 | -0.093 terawatt-hours | -130.7% |
| 1985 | -1.02 terawatt-hours | +1000.0% |
| 1986 | 0.089 terawatt-hours | -108.7% |
| 1987 | 0.211 terawatt-hours | +137.1% |
| 1988 | 0.059 terawatt-hours | -72.0% |
| 1989 | 0.095 terawatt-hours | +61.0% |
| 1990 | -1.06 terawatt-hours | -1216.8% |
| 1991 | 0.638 terawatt-hours | -160.1% |
| 1992 | -0.365 terawatt-hours | -157.2% |
| 1993 | -0.116 terawatt-hours | -68.2% |
| 1994 | -0.491 terawatt-hours | +323.3% |
| 1995 | 0.878 terawatt-hours | -278.8% |
| 1996 | 0.714 terawatt-hours | -18.7% |
| 1997 | -0.164 terawatt-hours | -123.0% |
| 1998 | 0.344 terawatt-hours | -309.8% |
| 1999 | -0.336 terawatt-hours | -197.7% |
| 2000 | -0.101 terawatt-hours | -69.9% |
| 2001 | -0.98 terawatt-hours | +870.3% |
| 2002 | 0.465 terawatt-hours | -147.4% |
| 2003 | 0.879 terawatt-hours | +89.0% |
| 2004 | 0.1438 terawatt-hours | -83.6% |
| 2005 | 1.16 terawatt-hours | +705.7% |
| 2006 | -0.0845 terawatt-hours | -107.3% |
| 2007 | -1.38 terawatt-hours | +1537.7% |
| 2008 | -0.0371 terawatt-hours | -97.3% |
| 2009 | 0.639 terawatt-hours | -1820.7% |
| 2010 | 1.6 terawatt-hours | +150.3% |
| 2011 | -2.16 terawatt-hours | -235.0% |
| 2012 | 0.3061 terawatt-hours | -114.2% |
| 2013 | 0.8585 terawatt-hours | +180.5% |
| 2014 | 0.5655 terawatt-hours | -34.1% |
| 2015 | 1.05 terawatt-hours | +86.2% |
| 2016 | -1.77 terawatt-hours | -268.6% |
| 2017 | -1.05 terawatt-hours | -40.7% |
| 2018 | 2.32 terawatt-hours | -320.4% |
| 2019 | -2.22 terawatt-hours | -195.6% |
| 2020 | -0.1091 terawatt-hours | -95.1% |
| 2021 | 2 terawatt-hours | -1932.1% |
| 2022 | -1.02 terawatt-hours | -150.8% |
| 2023 | -0.7231 terawatt-hours | -28.8% |
| 2024 | -0.293 terawatt-hours | -59.5% |
| 2025 | -0.0045 terawatt-hours | -98.5% |
Bulgaria compared with similar countries
- Bulgaria's -0.0045 terawatt-hours is above the median for high income countries, which is -0.1136 terawatt-hours, 4% of the median. (47 countries reporting)
- Bulgaria's -0.0045 terawatt-hours is above the median for Europe & Central Asia, which is -0.2504 terawatt-hours, 2% of the median. (39 countries reporting)
Biggest year-on-year movements
Years where Annual change in primary energy from hydropower 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 | +1932.1% | -0.1091 terawatt-hours | 2 terawatt-hours |
| 2009 | +1820.7% | -0.0371 terawatt-hours | 0.639 terawatt-hours |
| 2007 | -1537.7% | -0.0845 terawatt-hours | -1.38 terawatt-hours |
| 1990 | -1216.8% | 0.095 terawatt-hours | -1.06 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 | 0.1472 terawatt-hours | -0.62 terawatt-hours | 0.575 terawatt-hours | 10 |
| 1980s | -0.062 terawatt-hours | -1.02 terawatt-hours | 0.402 terawatt-hours | 10 |
| 1990s | 0.0041 terawatt-hours | -1.06 terawatt-hours | 0.878 terawatt-hours | 10 |
| 2000s | 0.07 terawatt-hours | -1.38 terawatt-hours | 1.16 terawatt-hours | 10 |
| 2010s | -0.0502 terawatt-hours | -2.22 terawatt-hours | 2.32 terawatt-hours | 10 |
| 2020s | -0.0245 terawatt-hours | -1.02 terawatt-hours | 2 terawatt-hours | 6 |
Countries ranked near Bulgaria
More reference data data for Bulgaria
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.3067 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 0.2728 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 1.73 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.2506 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 1.73 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 1.03 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 0.608 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 1.02 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 7.74 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 1.36 (2050)
Frequently asked questions
- What is annual change in primary energy from hydropower in Bulgaria?
- Annual change in primary energy from hydropower in Bulgaria was -0.0045 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 hydropower recorded in Bulgaria?
- The highest recorded value was 2.32 terawatt-hours in 2018.
- What is the lowest annual change in primary energy from hydropower recorded in Bulgaria?
- The lowest recorded value was -2.22 terawatt-hours in 2019.
- How does Bulgaria rank for annual change in primary energy from hydropower?
- Bulgaria ranks 37th out of 80 countries with data for 2025.
- Is annual change in primary energy from hydropower rising or falling in Bulgaria?
- Over the last ten years it is down 100.4%. 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 hydropower. 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.