Solar power in Thailand
Solar power in Thailand is targeted to reach 6,000 MW by 2036. As of 2025, solar power makes up around 3% of Thailand's electricity generation. In 2013 installed photovoltaic capacity nearly doubled and reached 704 MW by the end of the year. At the end of 2015, with a total capacity of 2,500-2,800 MW, Thailand has more solar power capacity than all the rest of Southeast Asia combined.
Thailand has great solar potential, especially the southern and northern parts of the northeastern region of Udon Thani Province and certain areas in the central region. Around 14.3% of the country has a daily solar exposure of around 19–20 MJ/m2/day, while another 50% of the country gains around 18–19 MJ/m2/day. In terms of solar potential, Thailand lags behind the US, but is ahead of Japan.
The 84 MW Lopburi Solar Farm was completed in May 2013. German solar energy company Conergy signed a contract with Thailand's Siam Solar Energy to construct three solar plants of 10.5 MW each in addition to existing two solar plants that have been under construction since autumn 2012.
In 2021, the world’s largest hybrid solar-hydropower project, the Sirindhorn floating solar farm, commenced operations.