Bulgaria vs Portugal: Annual change in primary energy from fossil fuels
Bulgaria
3.69 terawatt-hours
in 2025
Portugal
4.14 terawatt-hours
in 2025
Bulgaria rank
31st
Portugal rank
29th
Annual change in primary energy from fossil fuels over time
- Bulgaria
- Portugal
How they compare
Portugal currently reports 4.14 terawatt-hours against 3.69 terawatt-hours in Bulgaria, a difference of 0.45 terawatt-hours.
That makes Portugal's figure about 1.1 times Bulgaria's.
The two have swapped places 14 times across 29 shared years of data; in 1997 it was Portugal ahead.
Bulgaria ranks 31st and Portugal ranks 29th of 76 countries.
Across the 4 decades both report, Bulgaria averaged higher in 3 and Portugal in 1.
Head to head by decade
| Decade | Bulgaria | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1990s | -15.92 terawatt-hours | 17.93 terawatt-hours | 33.85 terawatt-hours | Portugal |
| 2000s | -1.34 terawatt-hours | -2.55 terawatt-hours | 1.21 terawatt-hours | Bulgaria |
| 2010s | -0.3999 terawatt-hours | -1.79 terawatt-hours | 1.39 terawatt-hours | Bulgaria |
| 2020s | -3.06 terawatt-hours | -8.56 terawatt-hours | 5.5 terawatt-hours | Bulgaria |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from fossil fuels, Bulgaria or Portugal?
- Portugal, at 4.14 terawatt-hours against 3.69 terawatt-hours in Bulgaria as of 2025.
- What is the difference in annual change in primary energy from fossil fuels between Bulgaria and Portugal?
- 0.45 terawatt-hours, with Portugal ahead.
- How many years of comparable data are there for Bulgaria and Portugal?
- 29 years are reported by both, from 1997 to 2025.
- How do Bulgaria and Portugal rank globally for annual change in primary energy from fossil fuels?
- Bulgaria ranks 31st and Portugal ranks 29th of 76 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026) β with major processing by Our World in Data, published as Annual change in primary energy from fossil fuels. 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.