Portugal vs Viet Nam: Annual percentage change in primary energy from fossil fuels
Portugal
2.6%
in 2025
Viet Nam
2.7%
in 2025
Portugal rank
16th
Viet Nam rank
15th
Annual percentage change in primary energy from fossil fuels over time
- Portugal
- Viet Nam
How they compare
Viet Nam currently reports 2.7% against 2.6% in Portugal, a difference of 0.1%.
The two have swapped places 8 times across 29 shared years of data; in 1997 it was Viet Nam ahead.
Portugal ranks 16th and Viet Nam ranks 15th of 76 countries.
Viet Nam has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Portugal | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 8.1% | 10.5% | 2.4% | Viet Nam |
| 2000s | -0.9% | 10.7% | 11.6% | Viet Nam |
| 2010s | -0.7% | 10.0% | 10.7% | Viet Nam |
| 2020s | -4.2% | 3.1% | 7.2% | Viet Nam |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual percentage change in primary energy from fossil fuels, Portugal or Viet Nam?
- Viet Nam, at 2.7% against 2.6% in Portugal as of 2025.
- What is the difference in annual percentage change in primary energy from fossil fuels between Portugal and Viet Nam?
- 0.1%, with Viet Nam ahead.
- How many years of comparable data are there for Portugal and Viet Nam?
- 29 years are reported by both, from 1997 to 2025.
- How do Portugal and Viet Nam rank globally for annual percentage change in primary energy from fossil fuels?
- Portugal ranks 16th and Viet Nam ranks 15th of 76 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 percentage 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
Percentage change in total energy supply relative to the previous year.