Share of electricity generation from nuclear in Japan
Japan: Share of electricity generation from nuclear was 9.1% in 2025. ◆ Volatile
Share of electricity generation from nuclear in Japan, 1985–2025
Source: Ember (2026) and other sources – with major processing by Our World in Data. Measured in %.
Analysis
In 2025, share of electricity generation from nuclear in Japan stood at 9.1%.
Compared with earlier readings it is up 9.4% on the previous year and up 1,982.2% over ten years.
Over the whole period, share of electricity generation from nuclear in Japan peaked at 30.8% in 1998 and was at its lowest, 0.0%, in 2014.
Japan ranks 23rd of 207 countries on this measure, in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Share of electricity generation from nuclear in Japan, year by year
| Year | % | Change |
|---|---|---|
| 1985 | 23.7% | — |
| 1986 | 24.4% | +3.0% |
| 1987 | 26.2% | +7.3% |
| 1988 | 23.1% | -12.0% |
| 1989 | 23.2% | +0.7% |
| 1990 | 22.1% | -5.0% |
| 1991 | 22.9% | +3.8% |
| 1992 | 23.7% | +3.4% |
| 1993 | 26.7% | +13.0% |
| 1994 | 26.2% | -1.9% |
| 1995 | 28.4% | +8.2% |
| 1996 | 28.8% | +1.4% |
| 1997 | 30.4% | +5.7% |
| 1998 | 30.8% | +1.0% |
| 1999 | 29.4% | -4.4% |
| 2000 | 29.0% | -1.3% |
| 2001 | 29.6% | +2.0% |
| 2002 | 28.5% | -3.7% |
| 2003 | 21.1% | -26.1% |
| 2004 | 25.5% | +21.1% |
| 2005 | 25.4% | -0.3% |
| 2006 | 26.1% | +2.8% |
| 2007 | 23.6% | -9.5% |
| 2008 | 21.3% | -10.0% |
| 2009 | 24.7% | +15.9% |
| 2010 | 25.3% | +2.6% |
| 2011 | 14.8% | -41.7% |
| 2012 | 1.6% | -89.0% |
| 2013 | 1.3% | -17.4% |
| 2014 | 0.0% | -100.0% |
| 2015 | 0.4% | — |
| 2016 | 1.7% | +278.8% |
| 2017 | 2.7% | +62.4% |
| 2018 | 4.5% | +68.0% |
| 2019 | 6.3% | +38.2% |
| 2020 | 4.3% | -32.1% |
| 2021 | 5.9% | +39.1% |
| 2022 | 5.0% | -15.9% |
| 2023 | 7.7% | +54.7% |
| 2024 | 8.4% | +8.6% |
| 2025 | 9.1% | +9.4% |
Biggest year-on-year movements
Years where Share of electricity generation 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 |
|---|---|---|---|
| 2016 | +278.8% | 0.4% | 1.7% |
| 2014 | -100.0% | 1.3% | 0.0% |
| 2012 | -89.0% | 14.8% | 1.6% |
| 2018 | +68.0% | 2.7% | 4.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1980s | 24.1% | 23.1% | 26.2% | 5 |
| 1990s | 26.9% | 22.1% | 30.8% | 10 |
| 2000s | 25.5% | 21.1% | 29.6% | 10 |
| 2010s | 5.9% | 0.0% | 25.3% | 10 |
| 2020s | 6.7% | 4.3% | 9.1% | 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 electricity generation from nuclear in Japan?
- Share of electricity generation from nuclear in Japan was 9.1% in 2025, according to Ember (2026) and other sources – with major processing by Our World in Data.
- What is the highest share of electricity generation from nuclear recorded in Japan?
- The highest recorded value was 30.8% in 1998.
- What is the lowest share of electricity generation from nuclear recorded in Japan?
- The lowest recorded value was 0.0% in 2014.
- How does Japan rank for share of electricity generation from nuclear?
- Japan ranks 23rd out of 207 countries with data for 2025.
- Is share of electricity generation from nuclear rising or falling in Japan?
- Over the last ten years it is up 1,982.2%. The long-run trend across the full record is volatile.
- Where does this Japan data come from?
- The figures come from Ember (2026) and other sources – with major processing by Our World in Data, published as part of Share of electricity generation from nuclear. Statizoid updates them automatically from the source API.
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About this data
Measured as a percentage of total electricity produced in the country or region.