Iceland vs Portugal: Annual change in primary energy from oil
Iceland
0.0782 terawatt-hours
in 2025
Portugal
0.1082 terawatt-hours
in 2025
Iceland rank
43rd
Portugal rank
42nd
Annual change in primary energy from oil over time
- Iceland
- Portugal
How they compare
Portugal currently reports 0.1082 terawatt-hours against 0.0782 terawatt-hours in Iceland, a difference of 0.03 terawatt-hours.
That makes Portugal's figure about 1.4 times Iceland's.
The two have swapped places 30 times across 60 shared years of data; in 1966 it was Portugal ahead.
Iceland ranks 43rd and Portugal ranks 42nd of 79 countries.
Across the 7 decades both report, Iceland averaged higher in 3 and Portugal in 4.
Head to head by decade
| Decade | Iceland | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.0343 terawatt-hours | 2.08 terawatt-hours | 2.05 terawatt-hours | Portugal |
| 1970s | 0.1733 terawatt-hours | 5.46 terawatt-hours | 5.28 terawatt-hours | Portugal |
| 1980s | 0.0214 terawatt-hours | 5.45 terawatt-hours | 5.43 terawatt-hours | Portugal |
| 1990s | 0.2842 terawatt-hours | 4.58 terawatt-hours | 4.3 terawatt-hours | Portugal |
| 2000s | 0.1965 terawatt-hours | -4.09 terawatt-hours | 4.29 terawatt-hours | Iceland |
| 2010s | -0.1404 terawatt-hours | -1.29 terawatt-hours | 1.15 terawatt-hours | Iceland |
| 2020s | 0.0973 terawatt-hours | -2.74 terawatt-hours | 2.84 terawatt-hours | Iceland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from oil, Iceland or Portugal?
- Portugal, at 0.1082 terawatt-hours against 0.0782 terawatt-hours in Iceland as of 2025.
- What is the difference in annual change in primary energy from oil between Iceland and Portugal?
- 0.03 terawatt-hours, with Portugal ahead.
- How many years of comparable data are there for Iceland and Portugal?
- 60 years are reported by both, from 1966 to 2025.
- How do Iceland and Portugal rank globally for annual change in primary energy from oil?
- Iceland ranks 43rd and Portugal ranks 42nd of 79 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 change in primary energy from oil. 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.