Annual percentage change in primary energy from hydropower in Bulgaria
Bulgaria: Annual percentage change in primary energy from hydropower was -0.2% in 2025. ◆ Volatile
Annual percentage 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 %.
Analysis
In 2025, annual percentage change in primary energy from hydropower in Bulgaria stood at -0.2%.
Compared with earlier readings it is up 98.3% on the previous year and down 100.7% over ten years.
Over the whole period, annual percentage change in primary energy from hydropower in Bulgaria peaked at 82.0% in 2018 and was at its lowest, -43.1%, in 2019.
That places Bulgaria 26th out of 68 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 | 1.6% | -35.5% | 40.9% | 4 |
| 1970s | 7.2% | -19.1% | 22.7% | 10 |
| 1980s | -1.1% | -31.4% | 12.1% | 10 |
| 1990s | 4.7% | -39.4% | 67.7% | 10 |
| 2000s | 5.7% | -37.2% | 41.5% | 10 |
| 2010s | 5.9% | -43.1% | 82.0% | 10 |
| 2020s | 2.9% | -21.1% | 70.9% | 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)
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- Competitive elections 1 (2025)
- Men's universal right to vote 1 (2025)
Frequently asked questions
- What is annual percentage change in primary energy from hydropower in Bulgaria?
- Annual percentage change in primary energy from hydropower in Bulgaria was -0.2% 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 percentage change in primary energy from hydropower recorded in Bulgaria?
- The highest recorded value was 82.0% in 2018.
- What is the lowest annual percentage change in primary energy from hydropower recorded in Bulgaria?
- The lowest recorded value was -43.1% in 2019.
- How does Bulgaria rank for annual percentage change in primary energy from hydropower?
- Bulgaria ranks 26th out of 68 countries with data for 2025.
- Is annual percentage change in primary energy from hydropower rising or falling in Bulgaria?
- Over the last ten years it is down 100.7%. 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 percentage change in primary energy from hydropower. Statizoid updates them automatically from the source API.
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About this data
Percentage change in total energy supply relative to the previous year.