**The wait is over!** The government has officially approved a measure to support clean energy adoption. Individuals who install **Solar Rooftop systems** between **March 3, 2026 – December 31, 2028** can now **claim the installation expenses as a tax deduction**. Start **reducing your electricity bills** while also **helping protect the planet with renewable energy.** ☀️⚡
Eligible Tax Deduction Benefits
Taxpayers can claim a tax deduction for expenses related to installing a solar power system, under the following conditions:
- The deduction is based on the actual expenses, including equipment costs and installation fees.
- The system must be an On-Grid solar power system only.
- System size must not exceed 10 kWp per residence.
- Maximum deductible amount: 200,000 THB.
This benefit can be claimed only once per taxpayer and must be applied in the tax year when the solar system is successfully connected to the electricity grid. ⚡
Duration of the Measure
This measure covers expenses incurred during the following period:
March 3, 2026 – December 31, 2028
If the solar system is installed and paid for within this period, the expenses can be used for tax deduction. ⚡
Key Conditions for Claiming the Tax Deduction
Taxpayers must comply with the following main conditions:
1. The solar system must be installed at a residential property
The solar power generation system must be installed on:
- The roof
- The rooftop terrace
- Or any structural part of the residential building
2. The system must be connected to the electricity grid
The installation must receive approval to connect to the grid from:
- Metropolitan Electricity Authority (MEA)
- Provincial Electricity Authority (PEA)
3. An e-Tax Invoice is required
The expenses claimed for deduction must have an electronic tax invoice (e-Tax Invoice) issued by a VAT-registered company.
4. The claimant must be the system owner
The name on the following documents must be the same person:
- e-Tax Invoice
- Electricity meter owner
- Tax filer
5. Cannot be combined with other tax incentive programs
The same expenses cannot be used for other tax benefits, such as BOI incentives or other investment promotion programs. ⚡
In addition to the tax deduction benefit, a solar power system can help reduce electricity bills by approximately 40–70% and typically pay for itself within 3–5 years, making it a highly worthwhile long-term investment.
If you are planning to install a solar system and want to properly claim the tax deduction, SolEn is ready to provide consultation, system design, and complete installation services, including all required documentation that complies with the tax incentive conditions. ☀️⚡
At SolEn, we don’t just sell products —
we provide the right solutions for all your clean energy needs.
Frequently Asked Questions About Solar Tax Deductions
Q1: Can people who installed solar panels before 2026 claim the tax deduction?
A: No. This measure only applies to new solar systems installed after the regulation was announced, and the system must be connected to the electricity grid within the specified eligibility period.
Q2: How should you start if you want to install solar panels and claim the tax deduction?
A: You should choose an installer that can issue a valid e-Tax Invoice, handle the grid connection application with the electricity authority, and design a system that matches your household’s electricity usage.
Companies like SolEn provide end-to-end solar services, including system design, installation, and documentation, delivered by a professional engineering team. This ensures you can claim the tax deduction correctly and get the best value from your solar investment.
Q3: If you already have a solar system and want to add more panels or install a battery, can you claim the tax deduction?
A: No. The tax deduction cannot be applied if you are only adding equipment to an existing system, such as installing additional solar panels or adding a battery. This measure allows one system per taxpayer and can be used only once, specifically for a new installation that meets the eligibility requirements.
In addition, the system eligible for the tax benefit must be a Solar Rooftop system connected to the electricity grid (On-Grid) and must have a valid e-Tax Invoice covering both equipment and installation costs of the new system.
If you have never claimed the solar tax deduction before, it is recommended to consult with experts to design a system that meets the program requirements. Installation teams like SolEn can help plan the system and prepare the necessary documentation to ensure you can properly claim the tax benefit. ☀️⚡
