10 kW Solar System solar system
in Free State
Free State receives 5.3 peak sun hours/day and pays R2.71/kWh for electricity. A 10 kW Solar System system here saves R2,100–R2,950/month — use these province-specific numbers to size your system correctly.
10 kW Solar System in Free State — at a glance
- Monthly saving
- R2,100–R2,950
- System cost (installed)
- R145,000–R200,000
- Payback period
- 4.9–6.8 years
- Monthly energy output
- 1,280 kWh/month
- Peak sun hours/day
- 5.3 h (PVGIS v5.2)
- Electricity tariff
- R2.71/kWh (2025/26)
- Typical panels
- 22–28 × 400W panels
- Inverter example
- Sunsynk 10 kW or Victron Multiplus-II 10 kVA
80% yield factor, 60–85% self-consumption. Methodology
Why a 10 kW Solar System system works well in Free State
The Free State has some of SA's best irradiance at 1,920 kWh/kWp — but lower tariffs mean payback periods are slightly longer at 5.5–7 years. High-bill households still benefit significantly.
For a 10 kW Solar System system, Free State's 1,920 kWh/kWp/year irradiance means annual output of 15,360 kWh. At the province's average residential tariff of R2.71/kWh, that generation is worth R2,100–R2,950 per month. With electricity tariffs rising ~10% per year, each year of delay costs you more in both higher bills and lower government tax rebate eligibility.
The 10 kW Solar System system is ideal for 5+ bedroom home or light commercial, with monthly electricity bills in the R4,000 – R8,000 range. It generates enough power for daytime use in most Free State homes, and pairs well with a 5 kWh battery for load-shedding protection.
Battery options for a 10 kW Solar System system in Free State
Adding a battery increases self-consumption from 60% to 85% — a R850/month uplift at Free State tariffs.
10 kW Solar System solar installers in Free State cities
Click a city to see savings calculated with city-specific PVGIS data and your municipality's actual tariff.