Government says China supplied 99.3% of Thailand's solar-panel imports in the first seven months of 2026, but this only describes panel origin, not all panels used locally or residential solar programme spending. It cites 32 investment-promoted solar projects by 22 companies with over 49,000 MWp a year of capacity. If you quote or install solar for households, the programme's domestic-content requirements cover panels, breakers, fuses, cables, batteries, inverters, connectors, combiner boxes and installation standards, so check these against your supplier list.