Solar Sizing Benchmark Guide
Solar System Sizes: How Many Panels & Batteries Do You Need?
Compare common residential and commercial solar PV package sizes from 3 kWp up to 15+ kWp. Review panel counts, required roof area, monthly generation, and recommended LiFePO4 battery bank capacities.
Starter Solar
3 kWp Solar System
Ideal for starter homes, apartments, and daytime lighting loads with low electricity usage.
Solar Panels
6 × 550W Modules
Monthly Generation
~360 – 420 kWh
Roof Area Needed
~14.5 m² (156 ft²)
Typical Monthly Bill
$50–$90 / ₱3k–₱6k
Battery Storage
5.12 kWh LiFePO4
Size 3kW System →
Most Popular Home Setup
5 kWp Solar System
The benchmark sweet-spot for single-family residential homes with inverter air conditioning.
Solar Panels
9–10 × 550W Modules
Monthly Generation
~600 – 750 kWh
Roof Area Needed
~22 m² (236 ft²)
Typical Monthly Bill
$100–$180 / ₱7k–₱13k
Battery Storage
10.24 kWh (2 Racks)
Size 5kW System →
High-Capacity Home
10 kWp Solar System
Built for large estates, multiple air conditioners, EV charging, and brownout protection.
Solar Panels
18–20 × 550W Modules
Monthly Generation
~1,200 – 1,500 kWh
Roof Area Needed
~44 m² (473 ft²)
Typical Monthly Bill
$200–$400 / ₱15k–₱30k
Battery Storage
15.36 – 20.48 kWh
Size 10kW System →
Commercial & Agro
15+ kWp Commercial
Tailored for businesses, warehouses, cold storage, small factories, and agricultural farms.
Solar Panels
28+ × 550W Modules
Monthly Generation
~1,800 – 2,500+ kWh
Roof Area Needed
~68+ m² (732+ ft²)
Typical Monthly Bill
$400+ / ₱35,000+/mo
Battery Storage
30+ kWh High Voltage
Size Commercial System →
System Capacity
550W Panel Count
Roof Area
Monthly kWh
Recommended Inverter
LiFePO4 Storage
Payback Period
3.3 kWp Starter 6 Modules
14.5 m² (156 ft²)
360–420 kWh
3 kW Single-Phase
5.12 kWh (100Ah @ 48V)
3.8 – 4.8 Years
5.5 kWp Popular 10 Modules
23.8 m² (256 ft²)
650–750 kWh
5 kW or 6 kW Hybrid
10.24 kWh (200Ah @ 48V)
4.2 – 5.5 Years
8.25 kWp 15 Modules
35.7 m² (384 ft²)
980–1,150 kWh
8 kW Hybrid
15.36 kWh (300Ah @ 48V)
4.5 – 6.0 Years
11.0 kWp Large Home 20 Modules
47.6 m² (512 ft²)
1,320–1,550 kWh
10 kW or 12 kW Split/3-Ph
20.48 kWh (400Ah @ 48V)
4.8 – 6.5 Years
16.5 kWp 30 Modules
71.4 m² (768 ft²)
2,000–2,350 kWh
15 kW Three-Phase
30+ kWh Rack Array
4.0 – 5.8 Years
Need a Custom Solar Design for Your Exact Numbers?
Enter your actual electric bill or monthly kWh into our full engineering calculator to get tailored panel, wire, and battery recommendations.
Open Free Solar Calculator →
