Iceland vs Slovakia: Annual change in primary energy from renewables
Iceland
-3.99 terawatt-hours
in 2025
Slovakia
-2.35 terawatt-hours
in 2025
Iceland rank
73rd
Slovakia rank
71st
Annual change in primary energy from renewables over time
- Iceland
- Slovakia
How they compare
Slovakia currently reports -2.35 terawatt-hours against -3.99 terawatt-hours in Iceland, a difference of 1.64 terawatt-hours.
The two have swapped places 21 times across 60 shared years of data; in 1966 it was Iceland ahead.
Iceland ranks 73rd and Slovakia ranks 71st of 80 countries.
Across the 7 decades both report, Iceland averaged higher in 6 and Slovakia in 1.
Head to head by decade
| Decade | Iceland | Slovakia | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.0596 terawatt-hours | -0.2298 terawatt-hours | 0.2894 terawatt-hours | Iceland |
| 1970s | 0.2396 terawatt-hours | 0.058 terawatt-hours | 0.1816 terawatt-hours | Iceland |
| 1980s | 0.3513 terawatt-hours | 0.0078 terawatt-hours | 0.3435 terawatt-hours | Iceland |
| 1990s | 1.07 terawatt-hours | 0.2512 terawatt-hours | 0.8163 terawatt-hours | Iceland |
| 2000s | 4.04 terawatt-hours | 0.2507 terawatt-hours | 3.78 terawatt-hours | Iceland |
| 2010s | 1.6 terawatt-hours | 0.4871 terawatt-hours | 1.12 terawatt-hours | Iceland |
| 2020s | -0.6749 terawatt-hours | -0.3197 terawatt-hours | 0.3552 terawatt-hours | Slovakia |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from renewables, Iceland or Slovakia?
- Slovakia, at -2.35 terawatt-hours against -3.99 terawatt-hours in Iceland as of 2025.
- What is the difference in annual change in primary energy from renewables between Iceland and Slovakia?
- 1.64 terawatt-hours, with Slovakia ahead.
- How many years of comparable data are there for Iceland and Slovakia?
- 60 years are reported by both, from 1966 to 2025.
- How do Iceland and Slovakia rank globally for annual change in primary energy from renewables?
- Iceland ranks 73rd and Slovakia ranks 71st of 80 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 Annual change in primary energy from renewables. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.