The Thai Cabinet has approved a comprehensive set of tax incentive measures aimed at boosting energy conservation and accelerating the adoption of renewable energy among households and businesses. The initiatives, proposed by the Ministry of Energy, form a key part of Thailand’s climate roadmap targeting carbon neutrality by 2050 and net-zero greenhouse gas emissions by 2065.
The approved incentives include tax deductions for investments in energy-efficient equipment and rooftop solar installations, and are expected to significantly lower energy costs while stimulating economic activity. The Department of Alternative Energy Development and Efficiency (DEDE) will oversee implementation in collaboration with the Ministry of Finance and the Revenue Department.
1. Tax Deductions for Energy-Efficient Equipment and Materials
Eligible taxpayers—individual professionals, contractors, business owners, and juristic persons (companies and registered partnerships)—will be entitled to a 150% tax deduction on qualifying investments in certified energy-saving equipment and building materials. The equipment must carry a 5-star Energy Efficiency Label issued by DEDE or an equivalent certification and be operational in Thailand by December 31, 2028.
2. Personal Income Tax Deduction for Rooftop Solar Systems
Individual homeowners will receive up to THB 200,000 in tax deductions, including VAT, for installing on-grid solar rooftop systems with a maximum capacity of 10 kilowatt-peak (kWp). The system must be grid-connected and approved by the relevant electricity authority, with only one individual per household eligible to claim the deduction. This incentive will be available through December 31, 2027.
The Ministry of Energy is preparing to introduce a draft Solar Energy Promotion Act to the Cabinet. The proposed legislation is expected to support long-term investment in solar infrastructure, including local manufacturing and certification of Thai-made solar inverters, thereby reinforcing the nation’s clean energy ecosystem.
Despite an estimated fiscal cost of THB 27.96 billion, the government forecasts major benefits:
- Energy-efficient equipment incentives could stimulate THB 254 billion in economic activity, save 30.3 billion kWh annually, reduce LNG imports worth THB 110 billion, and cut 15.34 million tons of CO₂ emissions per year.
- Rooftop solar incentives are projected to contribute THB 20.25 billion to the economy, generate 585 million kWh in electricity savings annually, reduce LNG imports by THB 2.1 billion, and prevent 2.64 million tons of CO₂ emissions each year.
The measures are expected to benefit businesses through:
- Lower operating costs from energy savings and tax relief.
- SME modernization, by reducing capital investment burdens.
- Improved ESG positioning, aiding in investor relations and regulatory compliance.
- Clean tech sector growth, through rising demand for certified equipment and solar technologies.
Experts warn that despite the incentives’ advantages, certain challenges may arise:
- Ambiguity over eligible technologies and potential overlap with existing BOI or EEC incentives.
- Invoicing and regulatory complexities.
- Legal and logistical issues with grid connections in leased or co-owned properties.
Energy law and consulting firms, such as MPG, are offering strategic advisory services to help individuals and enterprises navigate eligibility, structure contracts, ensure compliance, and engage with government authorities for approvals or clarifications.
The tax package marks a significant milestone in Thailand’s journey toward a greener economy, reinforcing its commitment to sustainability, energy security, and economic competitiveness.
