At the Greenest Cities Forum in Phuket (24-26 Sept 2026), the Energy Ministry spokesperson said the 1-million-rooftop solar scheme is being designed, with registration expected in October 2026. Systems up to 5 kW per meter would sell power back to the grid at 2.20 baht per unit on 20-year contracts, with a 10,000 MW total cap. Hotels and property businesses are named as target users. If your premises have suitable roof space, start checking roof condition, meter size and quotes now so you can register when the window opens. The article gives no final rules, so confirm terms before committing money.