Most popular sizes · SA market 20263 kW Solar System solar system
3 kW Solar System solar system
South Africa guide
Ideal for small households with bills under R1,500/month. Covers essentials: lights, TV, Wi-Fi, laptop charging.
Suitable for: 1–2 bedroom home or apartmentMonthly bill: R800 – R1,500
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3 kW Solar System system at a glance
- System cost (installed)
- R45,000 – R70,000
- Monthly electricity saving
- R600 – R1,100
- Payback period
- 4.5–7 years
- Annual energy output
- 4,320 kWh/year
- Typical panel count
- 6–8 × 400W panels panels
- Inverter example
- Deye 3.6 kW or Goodwe 3 kW
Based on national avg tariff R2.90/kWh, 1,900 kWh/kWp/yr, 80% yield factor. Methodology
Battery backup options for a 3 kW Solar System system
Add a battery to keep power during load-shedding and increase self-consumption from 60% to 85%.
Basic backup (2–3 hours)
2.4 kWh
Additional cost
+R18,000
Stage 6 backup (4–6 hours)
5.1 kWh
Additional cost
+R35,000