If you're about to install a solar system in 2026 and still can't decide between Solis and GoodWe - two of the most popular Top 10 Global inverter brands - this article compares them across every dimension: price, efficiency, AFCI, monitoring systems, and suitability for use in Thailand, to help make your decision easier.
Quick Verdict
GoodWe is better for safety (AFCI 3.0 standard) and its modular design for commercial use. Solis is better for SolisCloud monitoring and Thai-language support. Both brands offer an equal 10-year warranty.
Table of Contents
1. Background of Each Brand
| Topic | Solis (Ginlong) | GoodWe |
|---|---|---|
| Founded | 2005 | 2010 |
| Headquarters | Shenzhen, China | Jiangsu, China |
| Stock exchange | Shenzhen Stock Exchange | Shanghai Stock Exchange (688390) |
| Cumulative installations | 80+ GW | 60+ GW |
| Number of countries sold in | 100+ countries | 100+ countries |
| Global ranking | Top 3 Global Inverter Brand | Top 10 Global Inverter Brand |
| Distributor in Thailand | QES Energy | QES Energy |
Both Solis and GoodWe are public companies listed on Chinese stock exchanges, with solid financial standing and a manufacturing track record spanning more than 10 years - giving you confidence that they will continue to provide after-sales service over the long term.
2. Models Available in Thailand
Solis - 11 models
- Hybrid Single-Phase: S6-EH1P6K / 8K / 10K-L-PLUS (6-10kW)
- Hybrid Three-Phase LV: S6-EH3P10K / 15K-NV-YD-L (10-15kW)
- Hybrid Three-Phase HV: S6-EH3P20K-H / 50K-H (20kW, 50kW)
- On-Grid Single-Phase: S6-GR1P5K, S5-GR1P10K (5kW, 10kW)
- On-Grid Three-Phase: S5-GR3P10K / 20K (10-20kW)
GoodWe - 14 models
- Hybrid Single-Phase (ES Uniq): GW5000 / 6000 / 10K / 12K-ES-C10 (5-12kW)
- Hybrid Three-Phase (ET LV): GW10K / 15K / 20K-ET-L-G10 (10-20kW)
- Commercial Hybrid (ETC): GW50K-ET-10, GW100K-ET-G10 (50-100kW)
- On-Grid Single-Phase (DNS): GW5K-DNS-G40 (5kW)
- On-Grid Three-Phase (SDT/GT): GW10K / 30K / 50K-SDT, GW125K-GT (10-125kW)
Winner: GoodWe offers a wider model range, especially large commercial models up to 125kW, making it ideal for factory-scale projects.
3. Efficiency
Conversion efficiency is the figure that tells you how well an inverter converts DC power from the solar panels into AC. The higher the number, the better.
| Category | Solis Max Efficiency | GoodWe Max Efficiency | Winner |
|---|---|---|---|
| Hybrid Single-Phase | 97.6% | 97.6% | Tie |
| Hybrid Three-Phase LV | 97.7% | 97.8-97.9% | GoodWe |
| Hybrid Three-Phase HV / Commercial | 98.3% | 97.6% | Solis |
| On-Grid Single-Phase | 98.0% | 97.8% | Solis |
| On-Grid Three-Phase (mid-range) | 98.5% | 98.5-98.7% | GoodWe |
| On-Grid Three-Phase (large/Commercial) | - | 99.0% (GT125K) | GoodWe |
Summary: Both have very similar efficiency, differing by only 0.1-0.3% (which has no real impact on long-term energy production). However, the GoodWe GW125K-GT takes the crown at 99.0% in the commercial segment.
4. Safety: AFCI, SPD, IP Rating
AFCI (Arc Fault Circuit Interrupter)
AFCI is an important function that detects arc faults (sparks in the DC string), which are a leading cause of fires in solar systems. Not every inverter has AFCI built in.
| Feature | Solis | GoodWe |
|---|---|---|
| AFCI version | AFCI 2.0 | AFCI 3.0 (AI-driven) |
| AFCI standard built-in | Optional on some models | Built-in on all Hybrid + 3P models |
| Type II SPD (DC/AC) | Built-in | Built-in |
| IP Rating | IP66 | IP66 (Hybrid) / IP65 (DNS) |
| Rapid Shutdown | Optional | Optional |
Safety winner: GoodWe, because AFCI 3.0 is standard on all Hybrid and 3-phase models. It uses AI-driven detection to reduce false alarms and detects arc faults more accurately than version 2.0.
5. Warranty
| Topic | Solis | GoodWe |
|---|---|---|
| Standard Warranty | 10 years (5 standard + 5 extended) | 10 years (total) |
| Extension Warranty | Extendable up to 20 years | Extendable up to 20 years |
| Service center in Thailand | Solis Thailand available | GoodWe Thailand available |
| RMA (product replacement) | Through QES Energy | Through QES Energy |
Winner: Tie - both offer an equal 10-year warranty.
6. Monitoring Systems
SolisCloud (Solis)
- iOS + Android app (Thai language ready)
- Beautiful web dashboard
- Alarms/notifications in Thai
- Free for the lifetime of the system
- EPC remote firmware update
SEMS Portal (GoodWe)
- iOS + Android app (Thai language supported)
- Smart EMS + energy management
- Real-time data + historical
- Free for the lifetime of the system
- API integration for enterprise
Winner: Solis for its Thai-language support and a UI that is easier to use for general users.
7. Price Comparison (May 2026)
The prices below are retail prices from QES Energy, the official distributor of both brands in Thailand.
Hybrid Single-Phase (5-12kW)
| Size | Solis | Price | GoodWe | Price |
|---|---|---|---|---|
| 5kW | - | - | GW5000-ES-C10 | 30,900 |
| 6kW | S6-EH1P6K-L-PLUS | 26,200 | GW6000-ES-C10 | 31,900 |
| 8kW | S6-EH1P8K-L-PLUS | 37,400 | - | - |
| 10kW | S6-EH1P10K-L-PLUS | 42,100 | GW10K-ES-C10 | 46,900 |
| 12kW | - | - | GW12K-ES-C10 | 50,100 |
Hybrid Three-Phase (10-20kW)
| Size | Solis | Price | GoodWe | Price |
|---|---|---|---|---|
| 10kW | S6-EH3P10K-NV-YD-L | 53,800 | GW10K-ET-L-G10 | 70,700 |
| 15kW | S6-EH3P15K-NV-YD-L | 60,800 | GW15K-ET-L-G10 | 75,200 |
| 20kW | S6-EH3P20K-H | 53,800 | GW20K-ET-L-G10 | 82,600 |
On-Grid Three-Phase (10-50kW)
| Size | Solis | Price | GoodWe | Price |
|---|---|---|---|---|
| 10kW | S5-GR3P10K | 29,300 | GW10K-SDT-30 | 28,600 |
| 20kW | S5-GR3P20K | 33,800 | - | - |
| 30kW | - | - | GW30K-SDT-30 | 35,500 |
| 50kW | S6-EH3P50K-H | 147,500 (Hybrid) | GW50K-SDT-C30 | 56,100 |
Price winner: Solis, especially in the Hybrid range - around 15-25% cheaper than GoodWe. GoodWe competes well in the On-Grid Three-Phase and Commercial segments.
8. Which to Choose by Use Case
Residential (5-12kW)
Recommended: Solis S6-EH1P-L-PLUS or GoodWe ES Uniq
If you want a lower price + a Thai-language UI → choose Solis
If you want AFCI 3.0 high safety → choose GoodWe
Large Homes / SME (15-30kW)
Recommended: Solis S6-EH3P or GoodWe ET LV / SDT G3
Three-Phase Hybrid → both are good / On-Grid Three-Phase → GoodWe offers a better price + AFCI 3.0
Factory / Commercial (50-125kW)
Recommended: GoodWe ETC / GT (Solis offers the S6-GC 100-125K, but QES has not yet imported it)
The GoodWe GW125K-GT delivers 99.0% efficiency - the highest in its class - plus a modular design that's easy to install.
Areas with Frequent Power Drops / Off-Grid
Recommended: GoodWe Hybrid + AndSolar Optimizer
GoodWe offers a generator port + Smart Load + UPS <4ms, making it ideal for areas with frequent power outages.
9. Pros and Cons of Each Brand
Solis
Pros
- Cheaper in the Hybrid segment
- SolisCloud UI is easy to use, with Thai language
- World's #3 manufacturer
- Many distributors in Thailand
- Entered the Thai market before GoodWe
Cons
- AFCI is still 2.0, and optional on many models
- Has Commercial 100-125kW models (S6-GC) but QES Energy has not yet imported them
- Older enclosure design
- Rapid Shutdown is optional
GoodWe
Pros
- AFCI 3.0 standard on all models
- Large Commercial models up to 125kW
- ETC Modular Plug & Play
- High efficiency of 99.0% (GT125K)
- Newer design, lighter weight
Cons
- 15-25% more expensive than Solis
- SEMS Portal UI may not be as complete as SolisCloud
- Thai market still smaller than Solis
- Fewer service centers
10. Where to Buy Solis and GoodWe in Thailand
QES Energy is the official distributor of both Solis and GoodWe in Thailand, carrying every model with a 100% genuine-product warranty.
QES Energy - Official Distributor
- All 11 Solis models (Hybrid 1P/3P + On-Grid 1P/3P)
- All 14 GoodWe models (5kW - 125kW)
- 100% genuine warranty + RMA through the distributor
- Free consultation from our engineering team
- Nationwide delivery + full-service installation
Contact:
Line: @qesenergy 083-987-289911. Frequently Asked Questions (FAQ)
Conclusion
In 2026, both Solis and GoodWe are world-class, high-quality inverters, and both are great choices:
- Choose Solis if you want great pricing in the Hybrid segment and an easy-to-use Thai-language UI/Cloud
- Choose GoodWe if you prioritize AFCI 3.0 safety, commercial scale up to 125kW, and a newer design
Both brands are available at QES Energy - contact our engineering team for a free consultation to choose the model that's right for your system.