Thailand has opened registration for businesses installing rooftop solar systems and for suppliers of approved equipment, with applications running from August 3 to September 30.

The scheme is intended to prepare for solar installations in 500,000 households, part of a wider clean-energy policy aimed at reducing electricity bills and increasing the use of renewable power.

Deputy Government Spokesperson Lalida Persvivatana said the initiative follows a policy led by Prime Minister and Interior Minister Anutin Charnvirakul to expand residential rooftop solar across Thailand.

The Metropolitan Electricity Authority (MEA) and Provincial Electricity Authority (PEA) are accepting applications from installation businesses as well as registrations for key equipment, including solar panels and inverters.

Standards and registration

Businesses must satisfy eligibility rules set by the MEA and PEA. Solar equipment must also meet recognised requirements, including International Electrotechnical Commission standards and Thai Industrial Standards.

Lalida said safety will take priority under the programme. Installation businesses, engineers, technicians and all equipment must meet the prescribed standards, with systems required to be high-quality, safe, efficient and designed for a service life of at least 20 years.

The MEA and PEA will jointly supervise installation standards and after-sales service. This is intended to allow households nationwide to select certified providers and inspected equipment meeting the same requirements.

Interested businesses can apply through MEA and PEA branches across the country. The government expects the stronger standards to improve public confidence, cut electricity costs and support Thailand's long-term energy security.

What it means for homeowners

The government is still developing financial support for rooftop solar installations. The measures are being prepared under the 2026 Emergency Decree authorising the Finance Ministry to borrow funds to address the effects of the energy crisis and advance Thailand's energy transition.

Details of homeowner funding, including eligibility and how support would be accessed, have not yet been announced. Foreign residents considering solar should therefore not assume that installation subsidies or other financial assistance will automatically apply to them.

Picture courtesy of The Nation

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6 August 2026

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This solar push looks promising on paper, with suggested tighter standards, certified installers, and long‑term service life.

These requirements are exactly what Thailand needs to build confidence in rooftop energy. But when you read lines like “Businesses must satisfy eligibility rules set by the MEA and PEA”, it’s hard not to think about how easily such frameworks can be manipulated for financial advantage.

Whenever multiple agencies share responsibility for certification and funding, the risk of bureaucratic loopholes and fraudulent approvals rises. Without transparent oversight and clear homeowner guidelines, the initiative could end up benefiting insiders more than ordinary households.

9 minutes ago, Jim Waldron said:

“Businesses must satisfy eligibility rules set by the MEA and PEA”, it’s hard not to think about how easily such frameworks can be manipulated for financial advantage.

MA and PEA are responsible for the power grids and the reliable supply of energy to 20+ million households. Of course they need a say on who connects to their grid and how.