Most popular sizes · SA market 20265 kW Solar System solar system
5 kW Solar System solar system
South Africa guide
The most popular size for South African homes. Handles a full home's daytime load including a pool pump and air conditioning.
Suitable for: 3–4 bedroom family homeMonthly bill: R1,500 – R3,000
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5 kW Solar System system at a glance
- System cost (installed)
- R70,000 – R105,000
- Monthly electricity saving
- R1,100 – R2,000
- Payback period
- 4–6.5 years
- Annual energy output
- 7,200 kWh/year
- Typical panel count
- 10–14 × 400W panels panels
- Inverter example
- Sunsynk 5 kW or Deye 5 kW hybrid
Based on national avg tariff R2.90/kWh, 1,900 kWh/kWp/yr, 80% yield factor. Methodology
Battery backup options for a 5 kW Solar System system
Add a battery to keep power during load-shedding and increase self-consumption from 60% to 85%.
Load-shedding backup (4–5 hours)
5.1 kWh
Additional cost
+R35,000
Overnight backup + load-shedding
10.2 kWh
Additional cost
+R65,000