Year-to-year change in primary energy from fossil fuels vs. in Iceland
Iceland: Year-to-year change in primary energy from fossil fuels vs. was -3.99 terawatt-hours in 2025. ◆ Volatile
Latest (2025)
-3.99 terawatt-hours
Change on year
down 448.8%
World rank
70th
of 80 countries
All-time high
10.61 terawatt-hours
in 2007
All-time low
-3.99 terawatt-hours
in 2025
Years of data
60
1966–2025
Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Iceland, 1966–2025
Source: Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in terawatt-hours.
Analysis
Iceland recorded -3.99 terawatt-hours for year-to-year change in primary energy from fossil fuels vs. low-carbon energy in 2025. That is the lowest value across all 60 years on record.
Compared with earlier readings it is down 448.8% on the previous year and down 196.5% over ten years.
Over the whole period, year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Iceland peaked at 10.61 terawatt-hours in 2007 and was at its lowest, -3.99 terawatt-hours, in 2025.
Iceland ranks 70th of 80 countries on this measure, in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Year-to-year change in primary energy from fossil fuels vs. in Iceland, year by year
| Year | terawatt-hours | Change |
|---|---|---|
| 1966 | -0.0168 terawatt-hours | — |
| 1967 | 0.0406 terawatt-hours | -341.7% |
| 1968 | 0.0224 terawatt-hours | -44.8% |
| 1969 | 0.1922 terawatt-hours | +758.2% |
| 1970 | 0.6547 terawatt-hours | +240.5% |
| 1971 | 0.1261 terawatt-hours | -80.7% |
| 1972 | 0.2593 terawatt-hours | +105.6% |
| 1973 | 0.5038 terawatt-hours | +94.3% |
| 1974 | -0.1073 terawatt-hours | -121.3% |
| 1975 | 0.0734 terawatt-hours | -168.4% |
| 1976 | 0.1505 terawatt-hours | +105.2% |
| 1977 | 0.1413 terawatt-hours | -6.1% |
| 1978 | 0.1069 terawatt-hours | -24.4% |
| 1979 | 0.4875 terawatt-hours | +356.1% |
| 1980 | 0.2245 terawatt-hours | -53.9% |
| 1981 | 0.8159 terawatt-hours | +263.4% |
| 1982 | 0.681 terawatt-hours | -16.5% |
| 1983 | 0.3083 terawatt-hours | -54.7% |
| 1984 | 0.1652 terawatt-hours | -46.4% |
| 1985 | -0.095 terawatt-hours | -157.5% |
| 1986 | 0.59 terawatt-hours | -721.0% |
| 1987 | 0.2902 terawatt-hours | -50.8% |
| 1988 | 0.3647 terawatt-hours | +25.7% |
| 1989 | 0.1682 terawatt-hours | -53.9% |
| 1990 | 0.1945 terawatt-hours | +15.6% |
| 1991 | -0.1588 terawatt-hours | -181.7% |
| 1992 | -0.2151 terawatt-hours | +35.4% |
| 1993 | 0.3997 terawatt-hours | -285.8% |
| 1994 | 0.0988 terawatt-hours | -75.3% |
| 1995 | 0.5028 terawatt-hours | +408.8% |
| 1996 | 0.6411 terawatt-hours | +27.5% |
| 1997 | 0.7278 terawatt-hours | +13.5% |
| 1998 | 3.22 terawatt-hours | +341.9% |
| 1999 | 5.27 terawatt-hours | +63.8% |
| 2000 | 2.18 terawatt-hours | -58.7% |
| 2001 | 1.49 terawatt-hours | -31.8% |
| 2002 | 0.1901 terawatt-hours | -87.2% |
| 2003 | -0.1809 terawatt-hours | -195.2% |
| 2004 | 0.8175 terawatt-hours | -551.9% |
| 2005 | 1.65 terawatt-hours | +101.3% |
| 2006 | 10 terawatt-hours | +508.0% |
| 2007 | 10.61 terawatt-hours | +6.0% |
| 2008 | 8.61 terawatt-hours | -18.8% |
| 2009 | 5 terawatt-hours | -42.0% |
| 2010 | -0.5597 terawatt-hours | -111.2% |
| 2011 | 2.27 terawatt-hours | -506.4% |
| 2012 | 4.91 terawatt-hours | +116.0% |
| 2013 | 0.9193 terawatt-hours | -81.3% |
| 2014 | -0.0443 terawatt-hours | -104.8% |
| 2015 | -1.35 terawatt-hours | +2938.8% |
| 2016 | 0.3379 terawatt-hours | -125.1% |
| 2017 | 1.63 terawatt-hours | +382.3% |
| 2018 | 8.19 terawatt-hours | +402.4% |
| 2019 | -0.2746 terawatt-hours | -103.4% |
| 2020 | -0.8666 terawatt-hours | +215.5% |
| 2021 | -0.8266 terawatt-hours | -4.6% |
| 2022 | 1.44 terawatt-hours | -274.6% |
| 2023 | 0.9163 terawatt-hours | -36.5% |
| 2024 | -0.7267 terawatt-hours | -179.3% |
| 2025 | -3.99 terawatt-hours | +448.8% |
Iceland compared with similar countries
- Iceland's -3.99 terawatt-hours is below the median for high income countries, which is 0.5633 terawatt-hours. (47 countries reporting)
- Iceland's -3.99 terawatt-hours is below the median for Europe & Central Asia, which is 0.1847 terawatt-hours. (39 countries reporting)
Biggest year-on-year movements
Years where Year-to-year change in primary energy from fossil fuels vs. in Iceland changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2015 | -2938.8% | -0.0443 terawatt-hours | -1.35 terawatt-hours |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 0.0596 terawatt-hours | -0.0168 terawatt-hours | 0.1922 terawatt-hours | 4 |
| 1970s | 0.2396 terawatt-hours | -0.1073 terawatt-hours | 0.6547 terawatt-hours | 10 |
| 1980s | 0.3513 terawatt-hours | -0.095 terawatt-hours | 0.8159 terawatt-hours | 10 |
| 1990s | 1.07 terawatt-hours | -0.2151 terawatt-hours | 5.27 terawatt-hours | 10 |
| 2000s | 4.04 terawatt-hours | -0.1809 terawatt-hours | 10.61 terawatt-hours | 10 |
| 2010s | 1.6 terawatt-hours | -1.35 terawatt-hours | 8.19 terawatt-hours | 10 |
| 2020s | -0.6749 terawatt-hours | -3.99 terawatt-hours | 1.44 terawatt-hours | 6 |
Countries ranked near Iceland
More climate change data for Iceland
- Nutrient nitrogen N (total) — Synthetic fertilizers (Agricultural) 16.80 million kg (2050)
- Emissions from livestock — Emissions (CO2eq) 462.45 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from N2O 110.24 kt (2050)
- Emissions from livestock — Emissions (CO2eq) from CH4 352.21 kt (2050)
- Emissions from livestock — Emissions 0.416 kt (2050)
- Emissions from livestock — Emissions 12.58 kt (2050)
- Emissions from crops — Emissions (CO2eq) 92.86 kt (2050)
- Emissions from crops — Emissions (CO2eq) from N2O 92.86 kt (2050)
- Emissions from crops — Emissions 0.3504 kt (2050)
- Synthetic Fertilizers — Emissions (CO2eq) 92.72 kt (2050)
Frequently asked questions
- What is year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Iceland?
- Year-to-year change in primary energy from fossil fuels vs. low-carbon energy in Iceland was -3.99 terawatt-hours in 2025, according to Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data.
- What is the highest year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Iceland?
- The highest recorded value was 10.61 terawatt-hours in 2007.
- What is the lowest year-to-year change in primary energy from fossil fuels vs. low-carbon energy recorded in Iceland?
- The lowest recorded value was -3.99 terawatt-hours in 2025.
- How does Iceland rank for year-to-year change in primary energy from fossil fuels vs. low-carbon energy?
- Iceland ranks 70th out of 80 countries with data for 2025.
- Is year-to-year change in primary energy from fossil fuels vs. low-carbon energy rising or falling in Iceland?
- Over the last ten years it is down 196.5%. The long-run trend across the full record is volatile.
- Where does this Iceland data come from?
- The figures come from Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as part of Year-to-year change in primary energy from fossil fuels vs. low-carbon energy. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 60 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.