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
Annual change in primary energy from hydropower in Bulgaria, 1966–2025
Source: Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – 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 36th out of 77 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.
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
- Spring temperature anomalies 0.2116 °C (2026)
- Summer temperature anomalies 1.08 °C (2026)
- Temperature anomalies by month 1.39 °C (2026)
- Universal right to vote in practice 2 (2025)
- Autumn temperature anomalies 1.44 °C (2025)
- Winter temperature anomalies 1.98 °C (2025)
- Consumer price index 162.5 2010 = 100 (2025)
- Universal right to vote 2 (2025)
- Competitive elections 1 (2025)
- Men's universal right to vote 1 (2025)
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); Smil (2017) – 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 36th out of 77 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); Smil (2017) – 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.