When getting solar quotes in Thailand, three inverter brands come up most often: Solis, Huawei, and Deye. All three are well-established in the Thai market — but they sit at different price points and are optimised for different types of installations. This article explains what each brand does well, where it falls short, and which type of property or budget it suits best.
Why the Inverter Matters More Than Most People Think
The inverter is the brain of your solar system. It converts DC electricity from the panels into AC electricity your home uses, manages power flow between panels, battery (if fitted), and the grid, and runs the monitoring system that tells you how much energy you are generating and saving. A low-quality inverter can cut system output, fail prematurely, and leave you with no visibility into your system's performance. Choosing the right brand matters as much as choosing the right panels.
Solis — Reliable Performance at a Strong Value
Solis is one of the world's top inverter manufacturers by installed capacity, with full IEC certification and a product range covering residential string inverters, commercial multi-string inverters, and hybrid models for battery systems. The SolisCloud monitoring platform gives system owners and installers real-time visibility into generation, consumption, and grid export. Solis inverters are our standard specification at Smarter Energy Solution because they deliver tier-1 reliability and monitoring capability at a price that keeps payback periods competitive for our customers.
- Strengths: full IEC certification, wide product range (on-grid and hybrid), SolisCloud monitoring app, strong authorised service and parts network in Thailand, competitive price-to-quality ratio
- Considerations: less widely known among end-customers than Huawei; the brand name requires more explanation compared to Huawei's strong consumer recognition in Thailand
- Best for: residential, pool villa, hotel, and commercial installs where strong reliability and real-time monitoring are required at a competitive price
Huawei — Smart Technology with Premium Features
Huawei's SUN2000 series is one of the most feature-rich inverters on the market. It uses optimiser technology at the string level to reduce the impact of shading and module mismatch, and pairs with the FusionSolar app — one of the most detailed monitoring platforms available. Huawei is well-suited to roofs with partial shading, complex multi-orientation layouts, or commercial projects where maximising output on a constrained roof is critical.
- Strengths: excellent shading tolerance via string-level optimisers, detailed FusionSolar monitoring app, strong brand recognition in Thailand, wide commercial product range
- Considerations: higher price point than Solis and Deye; optimiser technology adds value mainly on shaded roofs — straightforward roofs do not benefit as much
- Best for: shaded or multi-orientation roofs, large commercial projects, owners who want the highest level of monitoring detail
Deye — Budget-Friendly Hybrid Specialist
Deye has grown rapidly in the Thai market, particularly for hybrid solar systems that combine solar panels with battery storage. Its hybrid inverters are competitively priced and compatible with a wide range of battery brands, making Deye a popular choice when customers want to add battery backup at the lowest total system cost. Monitoring is handled via the SolarmanPV app. For a straightforward hybrid installation where budget is the primary consideration, Deye is worth considering.
- Strengths: competitive price especially for hybrid models, wide battery brand compatibility, growing service network in Thailand
- Considerations: newer brand with shorter track record than Solis or Huawei; monitoring app is less polished; after-sales support infrastructure is still developing in some areas
- Best for: hybrid installations where adding battery storage at the lowest cost is the priority; budget-conscious buyers who understand the trade-off on brand maturity
Side-by-Side Comparison
| Solis | Huawei | Deye | |
|---|---|---|---|
| Price range | Mid | Mid–High | Budget–Mid |
| Origin | China | China | China |
| On-grid range | ✓✓✓ | ✓✓✓ | ✓✓ |
| Hybrid range | ✓✓✓ | ✓✓✓ | ✓✓✓ |
| Shading tolerance | Standard | Excellent | Standard |
| Monitoring app | SolisCloud ★★★★ | FusionSolar ★★★★★ | SolarmanPV ★★★ |
| IEC certified | ✓ | ✓ | ✓ |
| Local service (Phuket) | Good | Good | Developing |
| Best for | Residential / commercial | Shaded / large commercial | Budget hybrid |
Solis vs Huawei vs Deye — quick comparison for Thai buyers
Not sure which inverter is right for your property? Our engineers assess your roof, shading conditions, and load profile — and recommend the best inverter for your specific situation. Free, no obligation.
Frequently Asked Questions
Does the inverter brand affect my solar warranty?
Yes. Each inverter comes with its own manufacturer warranty — typically 5 to 10 years depending on brand and model. The inverter warranty is separate from the panel warranty (usually 25–30 years for performance). When comparing quotes, check the inverter warranty length and what is covered, and confirm that the installer has access to local service support for that brand.
Can I add a battery to my existing Solis on-grid inverter?
Standard on-grid inverters are not designed to connect to a battery directly. To add battery storage to an existing on-grid system, you would need to replace the inverter with a hybrid model, or add an AC-coupled battery system. Solis offers hybrid inverter models that support battery storage — our team can advise on the most cost-effective upgrade path for your existing installation.
Is a more expensive inverter always better?
Not always. For a simple south- or west-facing roof with no shading, a well-certified mid-range inverter like Solis delivers nearly identical output to a premium brand at a lower cost. For a shaded or complex roof, Huawei's optimiser technology can make a meaningful difference to annual generation. A good installer recommends the inverter that matches your specific roof — not just the most expensive option available.