Thailand's Finance Ministry is revising its flagship 1-million-household solar rooftop subsidy program ahead of a September 30 proposal deadline. The subsidy structure may shift from 50,000 baht for 5kW systems to variable subsidies (30,000–50,000 baht) scaled to lower capacity thresholds (3kW), targeting smaller households. Key decisions on vendor availability, project scope, and KPIs are pending review by the sub-committee; implementation must complete by December 31, 2027. This signals active energy transition investment but execution timelines remain tight.