Thailand Solar Power: Generation, Share and Trend
Thailand generated 9.99 TWh of electricity from solar in 2025, 5.0% of its total, according to Ember. That made it the 29th 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 May 2026; they are compiled from national sources and are not real time.
Key Facts
- Thailand generated 9.99 TWh of electricity from solar in 2025.
- Solar supplied 5.0% of Thailand's electricity in 2025.
- Thailand was the 29th largest solar power producer in 2025 among the 180 countries with Ember data, comparing each country's latest year.
- Thailand's solar generation in 2025 was 99% higher than in 2020, when it was 5.03 TWh.
- Thailand's solar generation in 2025 was 320% higher than in 2015, when it was 2.38 TWh.
- 2025 was Thailand's highest year for solar generation in Ember's records, which start in 1985.
- Thailand's solar share in 2025 was below the world share of 8.8%.
- Thailand had 6.84 GW of solar generating capacity in 2025.
Key Figures, 2025
| Measure | Value | As of / source |
|---|---|---|
| Solar generation | 9.99 TWh | 2025 · Ember |
| Share of Thailand's electricity | 5.0% | 2025 · Ember |
| World share of solar | 8.8% | 2025 · Ember |
| Rank by solar generation (each country's latest year) | 29 of 180 | 2025 · Ember |
| Solar capacity | 6.84 GW | 2025 · Ember |
Solar Generation Year by Year
Ember annual statistics, 1985 to 2025Annual statistics through 2025, GWh
| Year | Solar |
|---|---|
| 1985 | 0 TWh |
| 1986 | 0 TWh |
| 1987 | 0 TWh |
| 1988 | 0 TWh |
| 1989 | 0 TWh |
| 1990 | 0 TWh |
| 1991 | 0 TWh |
| 1992 | 0 TWh |
| 1993 | 0 TWh |
| 1994 | 0 TWh |
| 1995 | 0 TWh |
| 1996 | 0 TWh |
| 1997 | 0 TWh |
| 1998 | 0 TWh |
| 1999 | 0 TWh |
| 2000 | 0 TWh |
| 2001 | 0 TWh |
| 2002 | 0 TWh |
| 2003 | 0 TWh |
| 2004 | 0 TWh |
| 2005 | 0 TWh |
| 2006 | 40.0 GWh |
| 2007 | 40.0 GWh |
| 2008 | 40.0 GWh |
| 2009 | 40.0 GWh |
| 2010 | 60.0 GWh |
| 2011 | 90.0 GWh |
| 2012 | 500 GWh |
| 2013 | 1.26 TWh |
| 2014 | 1.93 TWh |
| 2015 | 2.38 TWh |
| 2016 | 3.55 TWh |
| 2017 | 4.54 TWh |
| 2018 | 4.54 TWh |
| 2019 | 5.15 TWh |
| 2020 | 5.03 TWh |
| 2021 | 5.01 TWh |
| 2022 | 5.15 TWh |
| 2023 | 5.44 TWh |
| 2024 | 9.10 TWh |
| 2025 | 9.99 TWh |
Annual statistics through 2025, % of generation
| Year | Thailand | 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 | 0.0% | 0.0% |
| 2002 | 0.0% | 0.0% |
| 2003 | 0.0% | 0.0% |
| 2004 | 0.0% | 0.0% |
| 2005 | 0.0% | 0.0% |
| 2006 | 0.0% | 0.0% |
| 2007 | 0.0% | 0.0% |
| 2008 | 0.0% | 0.1% |
| 2009 | 0.0% | 0.1% |
| 2010 | 0.0% | 0.2% |
| 2011 | 0.1% | 0.3% |
| 2012 | 0.3% | 0.4% |
| 2013 | 0.7% | 0.6% |
| 2014 | 1.1% | 0.8% |
| 2015 | 1.3% | 1.1% |
| 2016 | 1.9% | 1.3% |
| 2017 | 2.5% | 1.8% |
| 2018 | 2.4% | 2.2% |
| 2019 | 2.6% | 2.6% |
| 2020 | 2.7% | 3.2% |
| 2021 | 2.7% | 3.7% |
| 2022 | 2.7% | 4.6% |
| 2023 | 2.7% | 5.6% |
| 2024 | 4.2% | 7.0% |
| 2025 | 5.0% | 8.8% |
| Year | Generation | Share | World share | Capacity |
|---|---|---|---|---|
| 2025 | 9.99 TWh | 5.0% | 8.8% | 6.84 GW |
| 2024 | 9.10 TWh | 4.2% | 7.0% | 3.39 GW |
| 2023 | 5.44 TWh | 2.7% | 5.6% | 3.30 GW |
| 2022 | 5.15 TWh | 2.7% | 4.6% | 3.19 GW |
| 2021 | 5.01 TWh | 2.7% | 3.7% | 3.07 GW |
| 2020 | 5.03 TWh | 2.7% | 3.2% | 2.98 GW |
| 2019 | 5.15 TWh | 2.6% | 2.6% | 2.99 GW |
| 2018 | 4.54 TWh | 2.4% | 2.2% | 2.97 GW |
| 2017 | 4.54 TWh | 2.5% | 1.8% | 2.70 GW |
| 2016 | 3.55 TWh | 1.9% | 1.3% | 2.45 GW |
Full year by year history for Thailand
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 May 2026Monthly statistics through May 2026, TWh
| Month | Solar |
|---|---|
| 2024-06 | 430 GWh |
| 2024-07 | 390 GWh |
| 2024-08 | 450 GWh |
| 2024-09 | 400 GWh |
| 2024-10 | 440 GWh |
| 2024-11 | 440 GWh |
| 2024-12 | 480 GWh |
| 2025-01 | 910 GWh |
| 2025-02 | 760 GWh |
| 2025-03 | 900 GWh |
| 2025-04 | 860 GWh |
| 2025-05 | 800 GWh |
| 2025-06 | 790 GWh |
| 2025-07 | 760 GWh |
| 2025-08 | 830 GWh |
| 2025-09 | 780 GWh |
| 2025-10 | 830 GWh |
| 2025-11 | 800 GWh |
| 2025-12 | 970 GWh |
| 2026-01 | 1.14 TWh |
| 2026-02 | 910 GWh |
| 2026-03 | 1.19 TWh |
| 2026-04 | 1.13 TWh |
| 2026-05 | 1.08 TWh |
Source: Ember (ember-energy.org), licensed under CC BY 4.0. Data as of May 2026. Monthly figures for Thailand can differ slightly from the annual totals.