Denmark vs Slovenia: Fossil fuel supply by source
Denmark
15.91 terawatt-hours
in 2025
Slovenia
9.06 terawatt-hours
in 2025
Denmark rank
68th
Slovenia rank
71st
Fossil fuel supply by source over time
- Denmark
- Slovenia
How they compare
Denmark currently reports 15.91 terawatt-hours against 9.06 terawatt-hours in Slovenia, a difference of 6.85 terawatt-hours.
That makes Denmark's figure about 1.8 times Slovenia's.
Across all 36 years both countries report, Denmark has been ahead every year.
Denmark ranks 68th and Slovenia ranks 71st of 77 countries.
Denmark has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Denmark | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 35.93 terawatt-hours | 8.55 terawatt-hours | 27.38 terawatt-hours | Denmark |
| 2000s | 51.27 terawatt-hours | 10.18 terawatt-hours | 41.1 terawatt-hours | Denmark |
| 2010s | 36.62 terawatt-hours | 8.39 terawatt-hours | 28.23 terawatt-hours | Denmark |
| 2020s | 18.54 terawatt-hours | 8.42 terawatt-hours | 10.11 terawatt-hours | Denmark |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher fossil fuel supply by source, Denmark or Slovenia?
- Denmark, at 15.91 terawatt-hours against 9.06 terawatt-hours in Slovenia as of 2025.
- What is the difference in fossil fuel supply by source between Denmark and Slovenia?
- 6.85 terawatt-hours, with Denmark ahead.
- How many years of comparable data are there for Denmark and Slovenia?
- 36 years are reported by both, from 1990 to 2025.
- How do Denmark and Slovenia rank globally for fossil fuel supply by source?
- Denmark ranks 68th and Slovenia ranks 71st 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.