Who is Chaweewan Group? We are a specialized solar installation company focusing on residential systems across Isan and Northern Thailand. With over 16 dedicated employees, including electrical engineers and certified electricians, we provide professional installations that prioritize safety, longevity, and return on investment.

Which areas do you serve? Our headquarters is in Phetchabun, with additional offices in Khon Kaen and Udon Thani. we cover a wide range of provinces including Phitsanulok, Nakhon Sawan, Korat, Mukdahan, Buriram, Khon Kaen, Uttaradit, Chaiyaphum, Kanchanaburi, Sakon Nakhon, Lopburi, and many more.

What languages do you speak? To serve our diverse clientele, we offer support in Thai, English, and Norwegian.

What types of solar systems do you install? We offer three main configurations tailored to your needs:

• On-Grid: Best for saving money during the day while staying connected to the utility grid.

• Off-Grid: Perfect for remote locations far from the electrical grid.

• Hybrid: A combination that offers both electricity savings and battery backup during power outages.

Which brands do you work with? We focus on high-quality, integrated systems to ensure seamless communication between components. We are authorized installers for:

• AlphaESS: Known for reliable, long-lasting battery storage.

• Sigenergy: Featuring the “5-in-1” SigenStor which integrates the battery, hybrid inverter, and EV DC charger into one sleek unit.

Why do you recommend “Integrated Systems”? We believe in quality and accountability. By using an integrated system (where the inverter and battery are from the same brand), we ensure the components communicate perfectly. This increases the system’s lifetime and prevents “finger-pointing” between different manufacturers if a technical issue arises.

How much can I save with solar? Savings depend on your system type:

• Systems with Batteries: Typical payback period of 6–8 years.

• Systems without Batteries: Faster payback period of 3–5 years. After the payback period, all electricity produced is essentially pure profit for the next 20+ years.

Is it worth installing a small system (under 5 kW)? While small systems are affordable, the “Return on Investment” (ROI) is often better on slightly larger systems because the fixed costs of installation and permitting are spread across more power generation. We provide realistic projections to help you choose the right size for your budget.

How long do the batteries last? We use LFP (Lithium Iron Phosphate) batteries, which are non-combustible and significantly safer than older technologies. These integrated battery banks are designed to last over 20 years.

What happens during a power outage? If you have a hybrid or off-grid system with a UPS (Uninterruptible Power Supply) function, the system will switch to battery power within milliseconds, ensuring your home stays powered without interruption.

Do you handle the paperwork? Yes. We operate with full work permits and follow strict electrical engineering standards to ensure your installation is legal and safe.

What kind of warranty do you provide? We provide proper manufacturer warranties on all major equipment (inverters, batteries, and panels) and stand by our workmanship with dedicated after-sales follow-up.

Where can I learn more or get community advice?

• YouTube: Visit our Solar Thailand Channel which features over 220 videos, including reviews, installation walk-throughs, and ROI analyses.

• Facebook: Join our active solar community group (over 2,000 members) to discuss systems and ask questions to other solar owners.

How can I get a quote? You can reach us through multiple channels:

• Phone/Line/WhatsApp: +66 (0) 617873238

• Email: Chaweewangroupthailand@gmail.com