The Finance Ministry's debt office says the proposed household rooftop solar subsidy (first set at 50,000 baht for 5 kW) may be cut to a 3 kW system worth about 30,000-50,000 baht. The plan is still under review, and the 1 million household target is being reset. Proposals are due by 30 Sep 2026, with about 15 days of review after that, and approval is not guaranteed. If you install or sell rooftop solar, watch the spec and subsidy changes and the vendor list. Electricity use should be about 3,000 baht a month or more for 5 kW to pay off, and the project must be completed and paid out by 31 Dec 2027.