The government of Thailand is looking to officially register certified solar installers and PV equipment ahead of plans to accelerate the rollout of rooftop systems across the country.

Thailand’s Metropolitan Electricity Authority (MEA) and Provincial Electricity Authority (PEA) are now accepting registrations for vendors and equipment used in solar panel installations. 

In order to complete registration, vendors must meet qualifications and standards set by the electricity authorities, while equipment must be certified according to international standards such as IEC and Thai Industrial Standards. The registration process will be open until September 30.

According to a press briefing published by the Thai government, the registration forms part of preparations for expanding solar rooftop installations for the general public.

Last month, Thailand’s Finance Minister, Ekniti Nitithanprapas, revealed the government is preparing a two-phase THB 200 billion ($6 billion) energy transition program, with the first phase targeting rooftop solar deployment.

In the latest update, Lalida Periswiwatana, Deputy Spokesperson for the Prime Minister’s Office, said the government is still implementing measures to support the cost of rooftop solar installations. The measures will be funded under an emergency decree authorizing the Ministry of Finance to borrow money to address the impact of the energy crisis. 

Periswiwatana added that the goal of the first phase of the measures is to enable 500,000 households to install solar rooftops. She also shared that all operators, engineers, installers and equipment registered by the government must prove they can deliver a high-quality, safe, efficient solar system with a lifespan of at least 20 years.

MEA and PEA will jointly oversee the standards for service providers, installation and after-sales service once the program kicks off.

“The government believes that upgrading the standards for solar rooftop installations will build public confidence, reduce electricity costs, support the use of clean energy and enhance the country’s long-term energy security.” the government’s latest statement adds.

The registration represents Thailand’s latest move to ensure the high quality of solar installations as the buildout of rooftop solar continues. In May, the country’s Office of the Consumer Protection Board opened an investigation into substandard solar system installations following reports of faulty equipment, including signs of melting and burning.

Last month, Thailand’s National Energy Policy Council approved measures to open its clean-electricity market to greater competition.

According to reporting from Reuters, the plans include expanding direct renewable power purchase agreements to allow businesses to purchase clean electricity from producers via third-party grid access. Energy ⁠Minister Akanat Promphan added that the measures also feature a community solar plan, first unveiled late last year, which is aiming to add up to 1.5 GW of capacity through small ground-mounted projects. 

Thailand’s cumulative solar capacity reached 6,842 MW at the end of 2025, according to figures from the International Renewable Energy Agency (IRENA), compared to 3,388 MW at the end of 2024.