Thailand's Energy Regulatory Commission (ERC) has approved a new progressive electricity rate structure for residential users, effective September 2026. The first 200 units will be capped at no more than 3 baht/unit, while higher consumption tiers see modest rate reductions (201–400 units: 4.16 baht/unit; 401+ units: 4.36 baht/unit). The weighted average residential rate drops from 3.95 to 3.86 baht/unit. The policy also expands eligibility to include unregistered residential properties with consistent 6+ months payment history. This directly affects household budgets and operating costs for any SME running residential spaces, as well as fixed-cost planning for utilities.