Ireland vs Slovakia: Fossil fuel supply by source
Ireland
48.68 terawatt-hours
in 2025
Slovakia
44.95 terawatt-hours
in 2025
Ireland rank
57th
Slovakia rank
59th
Fossil fuel supply by source over time
- Ireland
- Slovakia
How they compare
Ireland currently reports 48.68 terawatt-hours against 44.95 terawatt-hours in Slovakia, a difference of 3.73 terawatt-hours.
That makes Ireland's figure about 1.1 times Slovakia's.
The two have swapped places 3 times across 47 shared years of data; in 1979 it was Slovakia ahead.
Ireland ranks 57th and Slovakia ranks 59th of 77 countries.
Across the 6 decades both report, Ireland averaged higher in 1 and Slovakia in 5.
Head to head by decade
| Decade | Ireland | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1970s | 2.76 terawatt-hours | 36.77 terawatt-hours | 34.01 terawatt-hours | Slovakia |
| 1980s | 16.6 terawatt-hours | 34.33 terawatt-hours | 17.73 terawatt-hours | Slovakia |
| 1990s | 27.5 terawatt-hours | 60.39 terawatt-hours | 32.89 terawatt-hours | Slovakia |
| 2000s | 44.77 terawatt-hours | 63.9 terawatt-hours | 19.13 terawatt-hours | Slovakia |
| 2010s | 48.6 terawatt-hours | 49.33 terawatt-hours | 0.723 terawatt-hours | Slovakia |
| 2020s | 50.45 terawatt-hours | 45.83 terawatt-hours | 4.62 terawatt-hours | Ireland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher fossil fuel supply by source, Ireland or Slovakia?
- Ireland, at 48.68 terawatt-hours against 44.95 terawatt-hours in Slovakia as of 2025.
- What is the difference in fossil fuel supply by source between Ireland and Slovakia?
- 3.73 terawatt-hours, with Ireland ahead.
- How many years of comparable data are there for Ireland and Slovakia?
- 47 years are reported by both, from 1979 to 2025.
- How do Ireland and Slovakia rank globally for fossil fuel supply by source?
- Ireland ranks 57th 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.