Thailand's Cabinet has approved a new regulation requiring solar panels to meet Thai Industrial Standards (TIS), marking a significant step in the country's solar safety upgrade. For solar wholesalers, installers, distributors, and EPC contractors, this policy signals growing demand for certified solar and energy storage solutions across the region.
Thailand Solar Policy: TIS Certification Becomes Mandatory
The draft regulation, proposed by Thailand's Ministry of Industry, requires manufacturers and importers of crystalline silicon solar panels to obtain licenses under the Industrial Product Standards Act. Distributors may only sell TIS-certified products, effective the day after publication in the Royal Gazette.
According to government statements, the new standards will not add steps, costs, or delays to solar panel imports. The Thai Industrial Standards Institute (TISI) has confirmed that imported products meeting IEC standards can submit IEC test results for TIS registration without further inspection or testing—a process taking no more than five days. TISI plans to issue 279 import licenses for compliant solar panels this month.
For B2B buyers, this means prioritizing suppliers who can provide valid IEC and TIS documentation. Solar panel procurement strategies should now include certification verification as a standard step.
Solar Panel Standards Expand to Inverters and Batteries
The Ministry of Industry plans to gradually review standards for other solar energy system components, including inverters, cables, and batteries. This signals that solar energy storage and BESS will face increasing regulatory attention in Thailand.
For solar installers and EPC contractors, this trend highlights the importance of selecting certified solar battery and LiFePO4 battery solutions that can meet future compliance requirements. As regulations expand, uncertified products may face market access restrictions.
Why Battery Energy Storage Systems Matter for Thailand Solar
Thailand's cumulative solar capacity reached 6,842 MW at the end of 2025, up from 3,388 MW a year earlier, according to IRENA. The government is preparing a THB 200 billion ($6 billion) energy transition program, with the first phase targeting rooftop solar deployment across 500,000 households.
As rooftop solar expands, demand for home battery and commercial battery solutions grows. Solar storage battery systems enable households and businesses to maximize self-consumption, reduce electricity costs, and improve backup power reliability. For B2B buyers, this represents a significant market opportunity.
How Solar Professionals Can Prepare for TIS Compliance
For solar wholesalers, installers, distributors, and EPC contractors, Thailand's new TIS requirements signal growing demand for certified solar and storage solutions.
Key preparation steps include:
♠Verifying supplier IEC and TIS certification for solar panels
♠Selecting certified LiFePO4 battery and BESS solutions for future compliance
♠Understanding local registration and licensing requirements
♠Offering integrated solar plus storage solutions for residential and commercial projects
As regulations extend to batteries and inverters, partnering with certified LiFePO4 battery suppliers becomes essential. YouthPOWER supports global partners with UL, IEC, CE, and UN38.3 certified storage solutions designed for long-term compliance and performance.
Conclusion
Thailand's TIS certification policy marks a new phase in the country's solar market development. As standards expand to batteries and storage systems, B2B buyers who prioritize certification and reliability will be best positioned to capture long-term opportunities. Understanding policy direction, market trends, and storage technology will be essential for success in Thailand's growing solar and BESS market.
Post time: Oct-12-2026