Solar guide for Thailand.
Clear answers. Better choices.

An ordinary on-grid system disconnects when the grid fails. Backup needs a compatible hybrid inverter, battery, safe isolation/changeover arrangement and agreed essential circuits. Adding a battery does not automatically mean every appliance is backed up.

Not always. If you use most electricity in the day, on-grid solar may offer a simpler starting point. Storage can be useful when you have surplus daytime generation and evening demand, or when you want a designed backup capability. Compare the extra cost with your priorities.

It describes your electrical supply, not a quality tier. Both supply types can use on-grid or hybrid systems. Your bill, meter and electrical survey help us select compatible equipment.

Export arrangements depend on your electricity authority, applicable programme, eligibility and approvals. Export is not automatically paid at your retail tariff. Our calculator gives unused or exported electricity no income.

The calculator allows about 5 m² per kWp as a planning assumption. A survey checks the actual panel dimensions, usable area, clearances, shading, roof condition and mounting requirements.

Core packages include a free electrical inspection and site survey, the electricity authority application/approval process, installation, commissioning and ongoing support. Your written quote sets out equipment models, site-specific works, exclusions, total price and warranty terms. Approval remains subject to the authority.

They can still generate electricity when light reaches the modules, but output is lower than in strong sunshine. Rain, cloud, shading, temperature and orientation affect production. A proposal should explain its annual-generation assumptions.

HomeStart starts from ฿149,995. Final pricing depends on the site, roof, electrical work, equipment and agreed scope. Ask for a written total showing tax treatment, inclusions and any extra works before deciding.

Use monitoring to check generation and investigate persistent changes. Arrange inspections and cleaning appropriate to your roof, local conditions and manufacturer guidance. Leave roof access and electrical checks to appropriately qualified people.