Deye SUN-5K vs SUN-8K — Which Inverter Size Is Right for Your Home?
The Deye SUN-5K and SUN-8K are two of the most popular hybrid inverters for UAE residential installations. Choosing between them depends on your home's energy consumption, roof space, and whether you have single or three-phase power. This guide helps you pick the right size.
Deye SUN-5K-SG03LP1 (5 kW Single Phase)
- Rated power: 5 kW
- Phase: Single phase (230V)
- Max PV input: 6.5 kW
- MPPT trackers: 2
- Battery voltage: 40-60V
- Max battery current: 100A
- Backup power: 5 kW continuous
- Wi-Fi: Built-in
- UAE Price: AED 3,200-3,800
Deye SUN-8K-SG04LP3 (8 kW Three Phase)
- Rated power: 8 kW
- Phase: Three phase (400V)
- Max PV input: 10.4 kW
- MPPT trackers: 2
- Battery voltage: 40-60V
- Max battery current: 120A
- Backup power: 8 kW continuous
- Wi-Fi: Built-in
- UAE Price: AED 4,200-5,000
Comparison Table
| Feature | SUN-5K | SUN-8K |
|---|---|---|
| Power | 5 kW | 8 kW |
| Phase | Single | Three |
| Max PV | 6.5 kW | 10.4 kW |
| Backup Power | 5 kW | 8 kW |
| Suitable For | Apartments, small villas | Large villas, townhouses |
| Daily Production | 20-25 kWh | 32-40 kWh |
| Monthly Savings | AED 300-450 | AED 450-700 |
| Price | AED 3,200-3,800 | AED 4,200-5,000 |
How to Choose the Right Size
Choose SUN-5K If:
- Your property has single-phase power (most apartments)
- Your daily consumption is under 25 kWh (check your DEWA bill)
- Your monthly DEWA bill is under AED 600
- You have limited roof space for solar panels
Choose SUN-8K If:
- Your property has three-phase power (most modern villas)
- Your daily consumption is 25-40 kWh
- Your monthly DEWA bill is AED 600-1,200
- You have a full villa rooftop available for panels
- You run air conditioning heavily (most UAE homes)
Sizing Based on DEWA Bill
| Monthly DEWA Bill | Est. Daily Use | Recommended Inverter | Panels Needed |
|---|---|---|---|
| AED 300-600 | 15-25 kWh | SUN-5K | 8-10 x 550W |
| AED 600-1,200 | 25-40 kWh | SUN-8K | 14-16 x 550W |
| AED 1,200+ | 40+ kWh | SUN-10K or SUN-12K | 18-22 x 550W |
Our Recommendation
The Deye SUN-8K-SG04LP3 is our default recommendation for UAE villas because most modern villas have three-phase power and monthly bills exceeding AED 600. The extra AED 1,000 over the SUN-5K gets you 60% more power capacity and significantly higher daily energy production. For apartments with single-phase power, the SUN-5K is an excellent fit.
Frequently Asked Questions
Should I get the Deye SUN-5K or SUN-8K for my UAE home?
Check your phase type first: the SUN-5K is single-phase (apartments), the SUN-8K is three-phase (villas). If your monthly DEWA bill is under AED 600, the SUN-5K suffices. For bills over AED 600 with three-phase power, the SUN-8K is recommended for its 60% greater capacity.
What is the daily energy production of Deye SUN-5K vs SUN-8K?
The Deye SUN-5K produces approximately 20-25 kWh daily in UAE conditions, while the SUN-8K produces 32-40 kWh daily. The actual output depends on panel quantity, orientation, and seasonal irradiance.
Can I use the SUN-5K on three-phase power?
No, the Deye SUN-5K-SG03LP1 is a single-phase inverter and cannot be connected to a three-phase electrical supply. For three-phase properties, you need the SUN-5K-SG04LP3 (three-phase 5 kW) or the more popular SUN-8K-SG04LP3.
