Have questions about solar energy in Thailand? We have answers. Here are the most common questions our customers ask before making the switch to solar.

Is solar a good investment in Thailand?

Yes — Thailand has excellent solar irradiance year-round, making it one of the best countries in Southeast Asia for solar. Most systems pay for themselves within 5–7 years, then generate free electricity for 20+ years. With rising electricity tariffs, the returns only improve over time.

How much does a solar system cost?

Every system is different depending on your energy needs, roof size, and equipment choice. We provide transparent, detailed quotes with no hidden fees. Contact us for a free assessment and personalised quote tailored to your property.

What happens on cloudy or rainy days?

Solar panels still generate electricity on cloudy days — just at a reduced level. Thailand’s climate means even during the rainy season, you will generate significant power. Grid-tied systems automatically switch to utility power when needed, and battery systems store surplus energy for use at night or during low-light periods.

How long does installation take?

Most residential installations are completed in 1–2 days. Commercial systems may take longer depending on system size. The permit and grid connection approval process typically takes 2–4 weeks and is handled entirely by our team.

What warranty do you offer?

Our solar panels come with a 25-year performance warranty from the manufacturer, and our inverters are covered for 5–10 years. Solar Solution Asia also provides a workmanship warranty on all installations. Our after-sales team is available to assist with any warranty claims or service needs.

Do I need to maintain my solar panels?

Solar panels require very little maintenance. We recommend an annual inspection and cleaning service to ensure optimal performance. In Thailand, dust and debris can reduce output over time, so periodic cleaning is beneficial. We offer affordable maintenance packages to keep your system at its best.

Can I sell excess electricity back to the grid?

Yes — Thailand’s net metering policy allows eligible customers to sell surplus solar electricity back to the grid through the Provincial Electricity Authority (PEA) or Metropolitan Electricity Authority (MEA). Our team can advise you on the current feed-in tariff rates and the application process.