Portugal vs Slovakia: Fossil fuel supply by source
Portugal
40.88 terawatt-hours
in 2025
Slovakia
44.95 terawatt-hours
in 2025
Portugal rank
60th
Slovakia rank
59th
Fossil fuel supply by source over time
- Portugal
- Slovakia
How they compare
Slovakia currently reports 44.95 terawatt-hours against 40.88 terawatt-hours in Portugal, a difference of 4.07 terawatt-hours.
That makes Slovakia's figure about 1.1 times Portugal's.
The two have swapped places 2 times across 30 shared years of data; in 1996 it was Slovakia ahead.
Portugal ranks 60th and Slovakia ranks 59th of 77 countries.
Across the 4 decades both report, Portugal averaged higher in 2 and Slovakia in 2.
Head to head by decade
| Decade | Portugal | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 7.88 terawatt-hours | 65.38 terawatt-hours | 57.5 terawatt-hours | Slovakia |
| 2000s | 37.19 terawatt-hours | 63.9 terawatt-hours | 26.71 terawatt-hours | Slovakia |
| 2010s | 51.61 terawatt-hours | 49.33 terawatt-hours | 2.28 terawatt-hours | Portugal |
| 2020s | 49.47 terawatt-hours | 45.83 terawatt-hours | 3.64 terawatt-hours | Portugal |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher fossil fuel supply by source, Portugal or Slovakia?
- Slovakia, at 44.95 terawatt-hours against 40.88 terawatt-hours in Portugal as of 2025.
- What is the difference in fossil fuel supply by source between Portugal and Slovakia?
- 4.07 terawatt-hours, with Slovakia ahead.
- How many years of comparable data are there for Portugal and Slovakia?
- 30 years are reported by both, from 1996 to 2025.
- How do Portugal and Slovakia rank globally for fossil fuel supply by source?
- Portugal ranks 60th and Slovakia ranks 59th of 77 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 Fossil fuel supply by source. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Measured in terawatt-hours of total energy supply.