Japan Solar Power: Generation, Share and Trend
Japan generated 101 TWh of electricity from solar in 2025, 9.8% of its total, according to Ember. That made it the 4th largest solar power producer in 2025 of the 180 countries with Ember data, comparing each country's latest year. Solar supplied 8.8% of the world's electricity in 2025. These are annual statistics for 2025, with monthly figures through July 2026; they are compiled from national sources and are not real time.
Key Facts
- Japan generated 101 TWh of electricity from solar in 2025.
- Solar supplied 9.8% of Japan's electricity in 2025.
- Japan was the 4th largest solar power producer in 2025 among the 180 countries with Ember data, comparing each country's latest year.
- Japan's solar generation in 2025 was 33% higher than in 2020, when it was 75.9 TWh.
- Japan's solar generation in 2025 was 193% higher than in 2015, when it was 34.5 TWh.
- 2025 was Japan's highest year for solar generation in Ember's records, which start in 1985.
- Japan's solar share in 2025 was above the world share of 8.8%.
- Japan had 92.2 GW of solar generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Solar generation | 101 TWh | 2025 · Ember |
| Share of Japan's electricity | 9.8% | 2025 · Ember |
| World share of solar | 8.8% | 2025 · Ember |
| Rank by solar generation (each country's latest year) | 4 of 180 | 2025 · Ember |
| Solar capacity | 92.2 GW | 2025 · Ember |
Solar Generation Year by Year
Ember annual statistics, 1985 to 2025Annual statistics through 2025, TWh
| Year | Solar |
|---|---|
| 1985 | 0 TWh |
| 1986 | 0 TWh |
| 1987 | 0 TWh |
| 1988 | 0 TWh |
| 1989 | 0 TWh |
| 1990 | 0 TWh |
| 1991 | 0 TWh |
| 1992 | 10.0 GWh |
| 1993 | 20.0 GWh |
| 1994 | 30.0 GWh |
| 1995 | 40.0 GWh |
| 1996 | 50.0 GWh |
| 1997 | 100 GWh |
| 1998 | 140 GWh |
| 1999 | 220 GWh |
| 2000 | 340 GWh |
| 2001 | 500 GWh |
| 2002 | 690 GWh |
| 2003 | 950 GWh |
| 2004 | 1.27 TWh |
| 2005 | 1.63 TWh |
| 2006 | 2.00 TWh |
| 2007 | 2.31 TWh |
| 2008 | 2.59 TWh |
| 2009 | 3.05 TWh |
| 2010 | 3.98 TWh |
| 2011 | 5.44 TWh |
| 2012 | 7.37 TWh |
| 2013 | 12.9 TWh |
| 2014 | 23.6 TWh |
| 2015 | 34.5 TWh |
| 2016 | 43.3 TWh |
| 2017 | 54.0 TWh |
| 2018 | 61.2 TWh |
| 2019 | 67.4 TWh |
| 2020 | 75.9 TWh |
| 2021 | 84.2 TWh |
| 2022 | 91.1 TWh |
| 2023 | 96.4 TWh |
| 2024 | 96.7 TWh |
| 2025 | 101 TWh |
Annual statistics through 2025, % of generation
| Year | Japan | World |
|---|---|---|
| 1985 | 0.0% | n/a |
| 1986 | 0.0% | n/a |
| 1987 | 0.0% | n/a |
| 1988 | 0.0% | n/a |
| 1989 | 0.0% | n/a |
| 1990 | 0.0% | n/a |
| 1991 | 0.0% | n/a |
| 1992 | 0.0% | n/a |
| 1993 | 0.0% | n/a |
| 1994 | 0.0% | n/a |
| 1995 | 0.0% | n/a |
| 1996 | 0.0% | n/a |
| 1997 | 0.0% | n/a |
| 1998 | 0.0% | n/a |
| 1999 | 0.0% | n/a |
| 2000 | 0.0% | 0.0% |
| 2001 | 0.1% | 0.0% |
| 2002 | 0.1% | 0.0% |
| 2003 | 0.1% | 0.0% |
| 2004 | 0.1% | 0.0% |
| 2005 | 0.1% | 0.0% |
| 2006 | 0.2% | 0.0% |
| 2007 | 0.2% | 0.0% |
| 2008 | 0.2% | 0.1% |
| 2009 | 0.3% | 0.1% |
| 2010 | 0.3% | 0.2% |
| 2011 | 0.5% | 0.3% |
| 2012 | 0.7% | 0.4% |
| 2013 | 1.2% | 0.6% |
| 2014 | 2.2% | 0.8% |
| 2015 | 3.4% | 1.1% |
| 2016 | 4.1% | 1.3% |
| 2017 | 5.0% | 1.8% |
| 2018 | 5.7% | 2.2% |
| 2019 | 6.4% | 2.6% |
| 2020 | 7.5% | 3.2% |
| 2021 | 8.1% | 3.7% |
| 2022 | 8.8% | 4.6% |
| 2023 | 9.6% | 5.6% |
| 2024 | 9.5% | 7.0% |
| 2025 | 9.8% | 8.8% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 101 TWh | 9.8% | 8.8% | 92.2 GW |
| 2024 | 96.7 TWh | 9.5% | 7.0% | 89.6 GW |
| 2023 | 96.4 TWh | 9.6% | 5.6% | 87.1 GW |
| 2022 | 91.1 TWh | 8.8% | 4.6% | 83.1 GW |
| 2021 | 84.2 TWh | 8.1% | 3.7% | 78.4 GW |
| 2020 | 75.9 TWh | 7.5% | 3.2% | 71.9 GW |
| 2019 | 67.4 TWh | 6.4% | 2.6% | 63.2 GW |
| 2018 | 61.2 TWh | 5.7% | 2.2% | 56.2 GW |
| 2017 | 54.0 TWh | 5.0% | 1.8% | 49.5 GW |
| 2016 | 43.3 TWh | 4.1% | 1.3% | 42.0 GW |
Full year by year history for Japan
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of 2025. World shares are Ember's World totals; ranks compare each country's latest year, which can differ between countries.
Solar Generation Month by Month
Ember monthly statistics through July 2026Monthly statistics through July 2026, TWh
| Month | Solar |
|---|---|
| 2024-08 | 9.59 TWh |
| 2024-09 | 8.48 TWh |
| 2024-10 | 6.24 TWh |
| 2024-11 | 5.81 TWh |
| 2024-12 | 5.80 TWh |
| 2025-01 | 6.23 TWh |
| 2025-02 | 6.80 TWh |
| 2025-03 | 7.73 TWh |
| 2025-04 | 9.15 TWh |
| 2025-05 | 8.70 TWh |
| 2025-06 | 9.14 TWh |
| 2025-07 | 11.3 TWh |
| 2025-08 | 10.1 TWh |
| 2025-09 | 8.16 TWh |
| 2025-10 | 6.43 TWh |
| 2025-11 | 6.37 TWh |
| 2025-12 | 5.47 TWh |
| 2026-01 | 6.46 TWh |
| 2026-02 | 6.78 TWh |
| 2026-03 | 10.1 TWh |
| 2026-04 | 8.30 TWh |
| 2026-05 | 10.5 TWh |
| 2026-06 | 7.72 TWh |
| 2026-07 | 9.93 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of July 2026. Monthly figures for Japan can differ slightly from the annual totals.