Iceland vs Slovenia: Wind energy generation vs. installed capacity
Iceland
10.42 terawatt-hours
in 2025
Slovenia
6.8 terawatt-hours
in 2025
Iceland rank
70th
Slovenia rank
71st
Wind energy generation vs. installed capacity over time
- Iceland
- Slovenia
How they compare
Iceland currently reports 10.42 terawatt-hours against 6.8 terawatt-hours in Slovenia, a difference of 3.62 terawatt-hours.
That makes Iceland's figure about 1.5 times Slovenia's.
The two have swapped places 5 times across 36 shared years of data; in 1990 it was Slovenia ahead.
Iceland ranks 70th and Slovenia ranks 71st of 79 countries.
Iceland has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Iceland | Slovenia | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 2000s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 2010s | 5.3 terawatt-hours | 3.79 terawatt-hours | 1.51 terawatt-hours | Iceland |
| 2020s | 8.14 terawatt-hours | 6.22 terawatt-hours | 1.92 terawatt-hours | Iceland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher wind energy generation vs. installed capacity, Iceland or Slovenia?
- Iceland, at 10.42 terawatt-hours against 6.8 terawatt-hours in Slovenia as of 2025.
- What is the difference in wind energy generation vs. installed capacity between Iceland and Slovenia?
- 3.62 terawatt-hours, with Iceland ahead.
- How many years of comparable data are there for Iceland and Slovenia?
- 36 years are reported by both, from 1990 to 2025.
- How do Iceland and Slovenia rank globally for wind energy generation vs. installed capacity?
- Iceland ranks 70th and Slovenia ranks 71st of 79 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 Wind energy generation vs. installed capacity. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Figures are based on gross generation and do not account for cross-border electricity supply.