Share of primary energy from nuclear in Japan
Japan: Share of primary energy from nuclear was 6.2% in 2025. ◆ Volatile
Share of primary energy from nuclear in Japan, 1965–2025
Source: Energy Institute – Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data. Measured in %.
Analysis
In 2025, share of primary energy from nuclear in Japan stood at 6.2%.
The figure is up 11.6% on the previous year and up 2,265.7% over ten years.
Over the whole period, share of primary energy from nuclear in Japan peaked at 16.5% in 1998 and was at its lowest, 0.0%, in 2014.
Japan ranks 21st of 216 countries on this measure, in the top 10%.
The series is highly variable year to year, so single readings are best treated with caution.
Share of primary energy from nuclear in Japan, year by year
| Year | % | Change |
|---|---|---|
| 1965 | 0.0% | — |
| 1966 | 0.1% | +1943.7% |
| 1967 | 0.1% | -5.7% |
| 1968 | 0.1% | +50.4% |
| 1969 | 0.1% | -11.7% |
| 1970 | 0.4% | +268.4% |
| 1971 | 0.7% | +67.4% |
| 1972 | 0.8% | +10.2% |
| 1973 | 0.7% | -7.9% |
| 1974 | 1.5% | +106.3% |
| 1975 | 1.9% | +28.8% |
| 1976 | 2.5% | +29.9% |
| 1977 | 2.3% | -7.1% |
| 1978 | 4.2% | +82.7% |
| 1979 | 4.9% | +16.9% |
| 1980 | 6.0% | +22.2% |
| 1981 | 6.5% | +8.0% |
| 1982 | 7.8% | +20.0% |
| 1983 | 8.5% | +8.4% |
| 1984 | 9.5% | +12.6% |
| 1985 | 11.1% | +16.3% |
| 1986 | 11.5% | +3.7% |
| 1987 | 12.5% | +8.8% |
| 1988 | 11.0% | -12.1% |
| 1989 | 11.4% | +3.4% |
| 1990 | 11.5% | +1.2% |
| 1991 | 12.0% | +4.7% |
| 1992 | 12.3% | +2.2% |
| 1993 | 13.9% | +12.5% |
| 1994 | 13.8% | -0.7% |
| 1995 | 14.9% | +8.0% |
| 1996 | 15.0% | +1.2% |
| 1997 | 16.0% | +6.3% |
| 1998 | 16.5% | +3.4% |
| 1999 | 15.8% | -4.3% |
| 2000 | 15.6% | -1.1% |
| 2001 | 15.8% | +1.4% |
| 2002 | 15.6% | -1.9% |
| 2003 | 11.5% | -26.3% |
| 2004 | 14.0% | +22.3% |
| 2005 | 14.1% | +0.3% |
| 2006 | 14.6% | +4.1% |
| 2007 | 13.5% | -7.5% |
| 2008 | 12.5% | -7.9% |
| 2009 | 14.8% | +18.8% |
| 2010 | 14.8% | +0.1% |
| 2011 | 8.8% | -40.9% |
| 2012 | 1.0% | -88.8% |
| 2013 | 0.8% | -17.8% |
| 2014 | 0.0% | -100.0% |
| 2015 | 0.3% | — |
| 2016 | 1.0% | +296.1% |
| 2017 | 1.7% | +63.4% |
| 2018 | 2.9% | +69.9% |
| 2019 | 4.0% | +36.6% |
| 2020 | 2.8% | -29.0% |
| 2021 | 3.8% | +36.3% |
| 2022 | 3.3% | -14.5% |
| 2023 | 5.0% | +53.7% |
| 2024 | 5.6% | +10.9% |
| 2025 | 6.2% | +11.6% |
Biggest year-on-year movements
Years where Share of primary energy from nuclear in Japan 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 |
|---|---|---|---|
| 1966 | +1943.7% | 0.0% | 0.1% |
| 2016 | +296.1% | 0.3% | 1.0% |
| 1970 | +268.4% | 0.1% | 0.4% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 0.1% | 0.0% | 0.1% | 5 |
| 1970s | 2.0% | 0.4% | 4.9% | 10 |
| 1980s | 9.6% | 6.0% | 12.5% | 10 |
| 1990s | 14.2% | 11.5% | 16.5% | 10 |
| 2000s | 14.2% | 11.5% | 15.8% | 10 |
| 2010s | 3.5% | 0.0% | 14.8% | 10 |
| 2020s | 4.5% | 2.8% | 6.2% | 6 |
Countries ranked near Japan
More energy & mining data for Japan
- Fossil fuel consumption by fuel, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, annual growth rate -0.7535 % change on previous year (2025)
- Coal consumption, per capita 0 terawatt-hours per person (2025)
- Coal consumption, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Primary energy use, per capita 0 terawatt-hours per person (2025)
- Coal production, per capita 0 terawatt-hours per person (2025)
- Coal production, per unit of GDP 0 terawatt-hours per US$ of GDP (2025)
- Fossil fuel consumption by fuel, per capita 0 terawatt-hours per person (2025)
- Fuel imports 19.6% (2025)
Frequently asked questions
- What is share of primary energy from nuclear in Japan?
- Share of primary energy from nuclear in Japan was 6.2% in 2025, according to Energy Institute – Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data.
- What is the highest share of primary energy from nuclear recorded in Japan?
- The highest recorded value was 16.5% in 1998.
- What is the lowest share of primary energy from nuclear recorded in Japan?
- The lowest recorded value was 0.0% in 2014.
- How does Japan rank for share of primary energy from nuclear?
- Japan ranks 21st out of 216 countries with data for 2025.
- Is share of primary energy from nuclear rising or falling in Japan?
- Over the last ten years it is up 2,265.7%. The long-run trend across the full record is volatile.
- Where does this Japan data come from?
- The figures come from Energy Institute – Statistical Review of World Energy (2026); Smil (2017); U.S. Energy Information Administration (2026) – with major processing by Our World in Data, published as part of Share of primary energy from nuclear. Statizoid updates them automatically from the source API.
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About this data
Measured as a percentage of total energy supply.