Thailand Tightens Solar Panel Product Standards
Thailand is tightening safety standards for solar products by designating key components as controlled goods, with five new standards covering wiring, batteries, fuses, inverters, and circuit breakers set to take effect by September 2025. T
Industry Minister Varawut Silparacha announced plans to enhance solar cell system safety by designating solar-related products as controlled goods to block substandard items from the market. The Thai Industrial Standards Institute (TISI) previously made solar panels subject to standard TIS 61730 Part 2-2567 a controlled product, expected to take effect in September 2025.
On June 23, 2025, the Industrial Products Standards Board approved five additional standards for solar-related products: TIS 62930-2564 for photovoltaic system electrical wires, TIS 63056-2567 for lithium batteries in energy storage systems, TIS 60269 Part 6-2567 for low-voltage fuses in solar cell systems, TIS 2603 Part 2-2556 for inverters, and TIS 60947 Part 2-25xx for DC circuit breakers.
"This additional standard framework covers electrical wires, lithium batteries, low-voltage fuses, inverters, and DC circuit breakers to assure the public that clean energy use must come with safety," Varawut said. The regulation is expected to take effect by September 2025.
The new standards will provide comprehensive safety oversight across the entire solar system, from electricity generation through transmission, conversion, and storage, reducing risks of fires, short circuits, and accidents from substandard equipment. After publication in the Royal Gazette, operators must obtain permits and comply with the standards, making it harder for non-compliant products to reach the market while better protecting consumers and aligning Thailand's solar industry with international standards.
Varawut advised consumers planning to install solar systems not to consider price alone. They should verify that key components—solar panels, inverters, wiring, batteries, and electrical protection devices—have TIS or related certifications and choose experienced installers to ensure proper and safe design and installation. "A solar system is a long-term investment lasting decades," he noted. "While certified equipment and expert installation may cost more upfront, they reduce safety risks, lower maintenance expenses, and provide better long-term value."
