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

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

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.