New Thai Ministerial Regulation Mandates TISI Standards for Solar Panels
A new ministerial regulation requiring crystalline silicon solar panels to meet Thai Industrial Standards Institute (TISI) requirements has officially taken effect as of October 30, 2026.
According to a report by Prachachat Business, the Royal Thai Government Gazette has published a new ministerial regulation mandating that crystalline silicon solar panels must comply with Thai Industrial Standards Institute (TISI) certifications. This measure, which officially came into force on October 30, 2026, is designed to ensure the quality and safety of solar energy equipment distributed within the country.
For residents and property owners in Thailand, this regulation is significant as it establishes a standardized quality benchmark for solar installations, potentially reducing risks associated with substandard electrical components. The mandate applies to standalone solar panels; however, the regulation includes specific exemptions for solar panels that are integrated into other industrial products.
While the regulation is now active, several details remain to be clarified regarding the enforcement timeline for existing inventories and the specific procedures for manufacturers or importers to certify products already in the supply chain. Consumers looking to install solar systems are encouraged to verify that their equipment meets the new TISI requirements to ensure compliance and safety. Further updates from the Ministry of Industry are expected to provide additional guidance on the transition period for businesses affected by this new legal framework.
