Bulgaria vs Portugal: Annual change in primary energy from solar
Bulgaria
1.34 terawatt-hours
in 2025
Portugal
1.64 terawatt-hours
in 2025
Bulgaria rank
29th
Portugal rank
26th
Annual change in primary energy from solar over time
- Bulgaria
- Portugal
How they compare
Portugal currently reports 1.64 terawatt-hours against 1.34 terawatt-hours in Bulgaria, a difference of 0.3 terawatt-hours.
That makes Portugal's figure about 1.2 times Bulgaria's.
The two have swapped places 8 times across 60 shared years of data; in 1966 it was Portugal ahead.
Bulgaria ranks 29th and Portugal ranks 26th of 80 countries.
Across the 7 decades both report, Bulgaria averaged higher in 1 and Portugal in 4.
Head to head by decade
| Decade | Bulgaria | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1970s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1980s | 0 terawatt-hours | 0.0001 terawatt-hours | 0.0001 terawatt-hours | Portugal |
| 1990s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | Portugal |
| 2000s | 0.0003 terawatt-hours | 0.0159 terawatt-hours | 0.0156 terawatt-hours | Portugal |
| 2010s | 0.1414 terawatt-hours | 0.1182 terawatt-hours | 0.0232 terawatt-hours | Bulgaria |
| 2020s | 0.9018 terawatt-hours | 1.23 terawatt-hours | 0.3299 terawatt-hours | Portugal |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from solar, Bulgaria or Portugal?
- Portugal, at 1.64 terawatt-hours against 1.34 terawatt-hours in Bulgaria as of 2025.
- What is the difference in annual change in primary energy from solar between Bulgaria and Portugal?
- 0.3 terawatt-hours, with Portugal ahead.
- How many years of comparable data are there for Bulgaria and Portugal?
- 60 years are reported by both, from 1966 to 2025.
- How do Bulgaria and Portugal rank globally for annual change in primary energy from solar?
- Bulgaria ranks 29th and Portugal ranks 26th of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) β with major processing by Our World in Data, published as Annual change in primary energy from solar. 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.