Best Solar Inverter Brand? GoodWe vs Solis

The inverter is the brain of a solar system, converting DC from panels into AC for your home. A good choice lasts 10+ years. This guide compares the two popular brands QES carries — GoodWe and Solis.

GoodWe — Safety Leader

GoodWe is a global Top 10 brand. Its standout is AFCI 3.0 standard on every model (the only such brand in Thailand) — AI arc-fault detection that prevents fires from degraded wiring. 14 models from 5kW to 125kW cover homes to factories, 10-year warranty. Ideal if safety is your top priority.

Solis — Flexibility Leader

Solis supports up to 1.6× DC oversizing (fit more panels, capture more low-light power), offers an easy Thai-language SolisCloud app, a 5-port Hybrid design (PV/battery/grid/backup/smart load), and 10-year warranty by default. Hybrid pricing is often 15-25% cheaper than GoodWe — ideal for value and flexibility.

Verdict — How to Choose

Maximum safety / AFCI 3.0 → GoodWe. Best value + more panel headroom + Thai app → Solis. Both carry 10-year warranties, genuine at QES, with free engineering help to pick the right model for your system and budget.

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Frequently Asked Questions

Hybrid vs On-Grid inverter difference?

On-Grid has no battery — generates daytime power / exports to grid, useless during outages. Hybrid has a battery port for nighttime use and outage backup.

Does AFCI matter?

Very much — it's arc-fault fire protection (degraded/loose wiring). GoodWe has AFCI 3.0 on every model, the only brand in Thailand.

How long is the inverter warranty?

Both GoodWe and Solis carry 10-year warranties; real-world life is 10-15 years.