โซลาร์เซลล์ที่อยู่อาศัย VSPP ของไทยทะลุ 800 เมกะวัตต์

Thailand's Department of Alternative Energy Development and Efficiency (DEDE) reports that residential and small commercial solar installations under the Very Small Power Producer (VSPP) framework have surpassed 800 MW of installed capacity by end of February 2026, representing more than 65,000 connected systems nationally. The Metropolitan Electricity Authority (MEA) and Provincial Electricity Authority (PEA) jointly administer the program, allowing systems up to 10 kW to inject surplus generation into the distribution grid at a tariff of THB 2.20/kWh — a significant improvement over the previous THB 1.68 rate set in 2021. Combined with retail electricity tariffs averaging THB 4.20/kWh and Thailand's strong solar resource (averaging 5.1 peak sun hours daily), residential systems are achieving simple payback periods of 6–8 years. Thailand's Board of Investment (BOI) continues to promote domestic solar manufacturing under its 8-year corporate tax holiday program, helping keep equipment prices for end consumers competitive at approximately USD 0.55–0.75 per watt installed. Bangkok and Chiang Mai represent the two largest urban markets, while northeastern provinces are seeing rapid growth driven by agribusiness applications and DEDE's rural electrification subsidies. The Energy Regulatory Commission has signaled plans to further expand the VSPP capacity ceiling for residential systems and to introduce time-of-use export tariffs that would provide higher compensation during peak afternoon hours.