The Ministry of Industry plans to set quality standards for the 1.5 million-household rooftop solar programme to keep out substandard equipment. Imported gear must first meet international IEC standards, which can then be adopted as Thai TISI (มอก.) standards. Installers must be certified by the relevant electricity authority or an accredited institution. Suppliers and installers should check that panels, inverters, DC breakers, fuses, cables and lithium batteries carry the listed มอก. numbers or IEC certification before quoting for solar jobs. The article gives no effective date, so treat this as a planning signal for now.