Bulgaria vs United States: Annual percentage change in primary energy from hydropower
Bulgaria
-0.2%
in 2025
United States
2.0%
in 2025
Bulgaria rank
26th
United States rank
23rd
Annual percentage change in primary energy from hydropower over time
- Bulgaria
- United States
How they compare
United States currently reports 2.0% against -0.2% in Bulgaria, a difference of 2.2%.
That makes United States's figure about 12.3 times Bulgaria's.
The two have swapped places 31 times across 60 shared years of data; in 1966 it was Bulgaria ahead.
Bulgaria ranks 26th and United States ranks 23rd of 68 countries.
Across the 7 decades both report, Bulgaria averaged higher in 5 and United States in 2.
Head to head by decade
| Decade | Bulgaria | United States | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 1.6% | 6.7% | 5.1% | United States |
| 1970s | 7.2% | 1.8% | 5.4% | Bulgaria |
| 1980s | -1.1% | 0.2% | 1.4% | United States |
| 1990s | 4.7% | 1.9% | 2.8% | Bulgaria |
| 2000s | 5.7% | -0.7% | 6.4% | Bulgaria |
| 2010s | 5.9% | 1.0% | 4.9% | Bulgaria |
| 2020s | 2.9% | -2.5% | 5.4% | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual percentage change in primary energy from hydropower, Bulgaria or United States?
- United States, at 2.0% against -0.2% in Bulgaria as of 2025.
- What is the difference in annual percentage change in primary energy from hydropower between Bulgaria and United States?
- 2.2%, with United States ahead.
- How many years of comparable data are there for Bulgaria and United States?
- 60 years are reported by both, from 1966 to 2025.
- How do Bulgaria and United States rank globally for annual percentage change in primary energy from hydropower?
- Bulgaria ranks 26th and United States ranks 23rd of 68 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as Annual percentage 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
Percentage change in total energy supply relative to the previous year.