Solar Panel Installation in Bangkok & Metro Cut your power bill up to 70%

A solar (PV) system converts sunlight directly into electricity using solar panels made of semiconductors such as silicon. When sunlight hits the panels, direct current (DC) is generated; an inverter then converts it to alternating current (AC) for use in your home or building, with control and protection equipment ensuring safe operation.

Yes — over the long term solar is highly worthwhile. It cuts electricity bills by 30-70%, typically pays back in 3-5 years, panels last 30+ years, it reduces pollution, and it increases property value.

Very little. Panels should be cleaned 1-2 times a year, the system should be inspected by a specialist once a year, and you can monitor production via an app or the inverter screen. QuescoSolar offers full maintenance and cleaning packages.

Solar can be installed on almost any roof — metal sheet, tile, concrete, and CPAC Monier — though suitability varies by roof type, orientation and pitch. Metal sheet roofs are ideal. We survey every site to design the best mounting solution, including ground-mount when needed.

Yes, panels still generate electricity on cloudy or rainy days, though output drops with the light: roughly 10-25% lower on partly cloudy days, 50-75% on very cloudy days, and over 80% during heavy rain. We size systems using year-round averages for accurate payback estimates.

QuescoSolar installs solar across all 50 districts of Bangkok plus the surrounding provinces — Pathum Thani, Nonthaburi, Samut Prakan, Samut Sakhon and Nakhon Pathom — covering Ramintra, Lat Phrao, Sai Mai, Don Mueang, Lak Si, Bang Khen, Chatuchak, Khlong Sam Wa, Min Buri, Lat Krabang, Bang Na, Sathon and many more.

QuescoSolar is a leading Bangkok solar installer. Our strengths: (1) coverage of all 50 Bangkok districts, (2) free on-site survey and system design, (3) certified engineers and skilled technicians, (4) up to 25-year panel and 10-year inverter warranties, and (5) genuine reviews and proven projects.

Criteria for a good installer: (1) proper licensing and registration, (2) certified electrical engineers, (3) Tier-1 panels and inverters, (4) installation and performance warranties, (5) real reviews and reference projects, and (6) clear after-sales service. QuescoSolar meets all of these.

Indicative 2026 prices from QuescoSolar: a 3 kW system is 95,000-150,000 THB (small homes, 2,000-3,000 THB/mo bills); a 5 kW system is 170,000-230,000 THB (4,000-6,000 THB/mo); larger systems are quoted after a site survey. Free survey and accurate quote provided.

Systems installed by QuescoSolar pay back on average in 3-5 years, depending on (1) system size, (2) daytime electricity usage, and (3) roof orientation and pitch. After payback, the system effectively produces free electricity for decades.

QuescoSolar installs throughout Bangkok and the metro region, especially East Bangkok (Min Buri, Khlong Sam Wa, Khan Na Yao, Bang Khen, Bueng Kum), North Bangkok (Don Mueang, Lak Si, Sai Mai, Chatuchak), Lat Phrao, Ramintra and Lam Luk Ka. Our office is in Khlong Sam Wa for fast local service.

QuescoSolar (เคสโก้ โซลาร์) is a full-service solar installation company located at 44 Soi Phraya Suren 19, Bang Chan, Khlong Sam Wa, Bangkok 10510, founded in 2018. We provide end-to-end installation for homes, buildings and factories with warranties and after-sales support.

On-grid systems (connected to the grid) require approval from MEA for Bangkok and metro, or PEA for other provinces, plus ERC and EGAT permits. QuescoSolar handles the entire permitting process for you.

Under the Net Metering / People’s Solar programmes, EGAT buys back excess power at about 2.20 THB/unit (per 2024-2026 announcements) for 10 years. However, the fastest payback comes from designing the system to self-consume most power during the day rather than selling it back.