Ireland vs Slovenia: Primary energy use by source
Ireland
3.3 terawatt-hours
in 2025
Slovenia
5.48 terawatt-hours
in 2025
Ireland rank
59th
Slovenia rank
56th
Primary energy use by source over time
- Ireland
- Slovenia
How they compare
Slovenia currently reports 5.48 terawatt-hours against 3.3 terawatt-hours in Ireland, a difference of 2.18 terawatt-hours.
That makes Slovenia's figure about 1.7 times Ireland's.
The two have swapped places 3 times across 36 shared years of data; in 1990 it was Ireland ahead.
Ireland ranks 59th and Slovenia ranks 56th of 78 countries.
Across the 4 decades both report, Ireland averaged higher in 3 and Slovenia in 1.
Head to head by decade
| Decade | Ireland | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 34.94 terawatt-hours | 16.35 terawatt-hours | 18.6 terawatt-hours | Ireland |
| 2000s | 28.57 terawatt-hours | 17.36 terawatt-hours | 11.21 terawatt-hours | Ireland |
| 2010s | 21.83 terawatt-hours | 14.14 terawatt-hours | 7.69 terawatt-hours | Ireland |
| 2020s | 8.24 terawatt-hours | 9.02 terawatt-hours | 0.7702 terawatt-hours | Slovenia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher primary energy use by source, Ireland or Slovenia?
- Slovenia, at 5.48 terawatt-hours against 3.3 terawatt-hours in Ireland as of 2025.
- What is the difference in primary energy use by source between Ireland and Slovenia?
- 2.18 terawatt-hours, with Slovenia ahead.
- How many years of comparable data are there for Ireland and Slovenia?
- 36 years are reported by both, from 1990 to 2025.
- How do Ireland and Slovenia rank globally for primary energy use by source?
- Ireland ranks 59th and Slovenia ranks 56th of 78 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 Primary energy use 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.