Algeria vs Bulgaria: Annual change in primary energy from hydropower
Algeria
-0.012 terawatt-hours
in 2025
Bulgaria
-0.0045 terawatt-hours
in 2025
Algeria rank
38th
Bulgaria rank
37th
Annual change in primary energy from hydropower over time
- Algeria
- Bulgaria
How they compare
Bulgaria currently reports -0.0045 terawatt-hours against -0.012 terawatt-hours in Algeria, a difference of 0.0075 terawatt-hours.
The two have swapped places 34 times across 60 shared years of data; in 1966 it was Bulgaria ahead.
Algeria ranks 38th and Bulgaria ranks 37th of 80 countries.
Across the 7 decades both report, Algeria averaged higher in 4 and Bulgaria in 3.
Head to head by decade
| Decade | Algeria | Bulgaria | Difference | Ahead |
|---|---|---|---|---|
| 1960s | -0.0098 terawatt-hours | -0.0402 terawatt-hours | 0.0305 terawatt-hours | Algeria |
| 1970s | -0.007 terawatt-hours | 0.1472 terawatt-hours | 0.1542 terawatt-hours | Bulgaria |
| 1980s | -0.0065 terawatt-hours | -0.062 terawatt-hours | 0.0555 terawatt-hours | Algeria |
| 1990s | -0.0023 terawatt-hours | 0.0041 terawatt-hours | 0.0064 terawatt-hours | Bulgaria |
| 2000s | 0.0139 terawatt-hours | 0.07 terawatt-hours | 0.0561 terawatt-hours | Bulgaria |
| 2010s | -0.019 terawatt-hours | -0.0502 terawatt-hours | 0.0312 terawatt-hours | Algeria |
| 2020s | -0.0205 terawatt-hours | -0.0245 terawatt-hours | 0.004 terawatt-hours | Algeria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from hydropower, Algeria or Bulgaria?
- Bulgaria, at -0.0045 terawatt-hours against -0.012 terawatt-hours in Algeria as of 2025.
- What is the difference in annual change in primary energy from hydropower between Algeria and Bulgaria?
- 0.0075 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Algeria and Bulgaria?
- 60 years are reported by both, from 1966 to 2025.
- How do Algeria and Bulgaria rank globally for annual change in primary energy from hydropower?
- Algeria ranks 38th and Bulgaria ranks 37th of 80 countries.
- Where does this data come from?
- Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as Annual change in primary energy from hydropower. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.