Model-by-model comparison
On-grid 3-phase 40–50 kW: Solis vs Deye
Solis S5-GC40K and Deye SUN-40–50K-G04 side by side from the makers' datasheets: models sold, battery, PV input, backup, IP rating and warranty in one table.
SolisSolis on-grid 3-phase 40 kWS5-GC40KFactories, buildings, large shopsSee it on the brand page
DeyeDeye on-grid 3-phase 40–50 kWSUN-40K-G04 · SUN-50K-G04Factories and large roofsSee it on the brand page
Spec comparison
| Spec | SolisS5-GC40K | DeyeSUN-40–50K-G04 |
|---|---|---|
| Size | 40 kW | 40–50 kW |
| Models sold | S5-GC40K | SUN-40K-G04 · SUN-50K-G04 |
| Type | On-grid 3-phase | On-grid, 3-phase |
| Grid | 3-phase 220/380 V | 3-phase 220/380 V or 230/400 V |
| Rated power | 40 kW | 40 / 50 kW |
| Battery | No battery (uses solar power in the daytime) | No battery (daytime solar) |
| Max PV input | 60 kW | 52 / 65 kW |
| Max DC voltage | 1,100 V | 1,100 V |
| MPPT voltage range | 200–1,000 V | 200–1,000 V |
| MPPTs | 4 (8 strings) | 3 / 4 |
| Max efficiency | 98.7% | 98.7% |
| AFCI / safety | AFCI (optional) · DC/AC Type II surge protection | Built in |
| Ingress protection | IP66 | IP65 |
| Warranty | 10-year warranty from the Thai service centre | 10 years (Thai service centre) |
| Dimensions | 647 × 629 × 252 mm | 434 × 570 × 243 mm |
| Weight | 42.1 kg | 39 kg |
| Display / communication | RS485 · WiFi / GPRS (optional) | RS485/RS232 · GPRS/WiFi/Bluetooth/4G/LAN (optional) |
| Suits | Factories, buildings, large shops | Factories and large roofs |
| Datasheet (PDF) | See it on the brand pageDatasheet (PDF) | See it on the brand pageDatasheet (PDF) |
— = the maker's datasheet doesn't state this item the same way (it doesn't mean the model lacks it). See each model's datasheet for the full values.
Values from the makers' datasheets, checked 1 Nov 2026; warranty as stated by TAMNIYOM. No prices on this page: ask on LINE for prices and stock.
What to check
How to read the comparison and pick the right model
- 1
1-phase or 3-phase supply
Match the model to your supply (see your power bill or meter). A 1-phase model can't run a whole 3-phase system.
- 2
Battery or not, and which voltage
On-grid has no battery; hybrid and off-grid do. Check the Battery row for 48 V or high-voltage (HV) to match the battery you'll use.
- 3
How many panels
Max PV input and the number of MPPTs tell you how many watts of panels fit and how many roof directions.
- 4
Backup in a power cut
If you need power in a cut, check backup output, switching time and surge (air conditioners, pumps).
- 5
Where it goes, and warranty
Outdoors needs IP65 or better; IP20/IP21 models go indoors. Then compare the warranty.
FAQ
Questions about comparing inverters
How do Solis S5-GC40K and Deye SUN-40–50K-G04 differ?
- Solis S5-GC40K: 40 kW, battery No battery (uses solar power in the daytime), PV input up to 60 kW, max efficiency 98.7%, IP66, warranty 10-year warranty from the Thai service centre
- Deye SUN-40–50K-G04: 40–50 kW, battery No battery (daytime solar), PV input up to 52 / 65 kW, max efficiency 98.7%, IP65, warranty 10 years (Thai service centre)
Which one should I choose?
Every model on this page fits the same kind of supply.
Choose by:
- The battery you'll use
- The number of panels
- The backup you need
- The budget
Send your power bill on LINE and the team helps you pick.
Other comparisons
- On-grid 1-phase 5 kW: Solis vs DeyeSolis S6-GR1P5K-S · Deye SUN-3.6–6.2K-G05P1-EU-AM2Compare
- On-grid 1-phase 10 kW: Solis vs DeyeSolis S5-GR1P10K · Deye SUN-9–10.5K-G02P1-EU-AM2Compare
- On-grid 3-phase 5–20 kW: Solis vs DeyeSolis S5-GR3P(5-20)K · Deye SUN-3–15K-G06P3-EU-BM2-P1Compare
- On-grid 3-phase 100–110 kW: Solis vs DeyeSolis S6-GC110K · Deye SUN-70–110K-G03Compare
- Hybrid 1-phase 6 kW: Solis vs DeyeSolis S6-EH1P(6-10)K-L-PLUS · Deye SUN-3–6K-SG06LP1-EU-CM2Compare
- Hybrid 1-phase 10 kW: Solis vs Deye vs LuxpowerSolis S6-EH1P(6-10)K-L-PLUS · Deye SUN-7–12K-SG06LP1-EU-CM3 · Luxpower GEN-LB-EU 7–10KCompare
Still not sure? Let the team help
Send your power bill, site photos or the models you compared on LINE. The team picks the inverter and battery and gives you a price, every day 08:30–17:30.