Solar & Battery Costs in Gauteng, South Africa System Prices & Installers
Design solar and battery systems for Gauteng using Photonik's professional design platform. Gauteng has the largest installed base of rooftop PV solar systems in South Africa, with 35 new facilities registered in 2024/25. The province's high electricity demand and frequent load shedding have driven rapid solar adoption.
ℹ️ Get quick estimates for solar and battery sizing, costs, and savings in Gauteng using these simplified calculators. For more accurate, advanced calculations, use the full Photonik design platform.
Solar Design Gauteng
Energy Usage
Energy consumption patterns in Gauteng reflect the province's high-altitude inland climate, with higher heating needs during cold winters and cooling needs during hot summers. The average Gauteng household uses between 10-20 kWh per day, with Johannesburg and Pretoria properties typically consuming more during winter months for heating and summer months for cooling. Energy-efficient properties throughout Gauteng often use significantly less through modern insulation, efficient heating and cooling systems, and smart home technologies.
Before installing solar, consider reducing your energy consumption through improved insulation and energy-efficient appliances. This is particularly valuable in Gauteng, where the province's largest installed base of rooftop PV reflects excellent conditions for solar investment, and reducing consumption can lower required system size and improve returns.
Typical energy usage per person per day in Gauteng:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
You'll need around 3.9kW of solar to match your average consumption in Gauteng. We recommend sizing between 5.9kW and 7.9kW for optimal results, accounting for daily and seasonal variations. Gauteng enjoys excellent solar potential, with most regions averaging 5.0-5.5 kWh/kW/day annually, amongst the highest in South Africa, with consistent generation throughout most of the year.
A 6.6 kW system in Gauteng generates approximately 29.3 kWh daily on average, with seasonal variation from 3.78 kWh/kW/day in June to 4.87 kWh/kW/day in October. Gauteng's exceptional solar irradiance (2,000-2,100 kWh/m² annually), combined with frequent load shedding and the province's leadership in rooftop solar adoption, makes solar and battery storage particularly attractive for homeowners.
Solar & Energy Savings
Calculate Heat Pump & EV Savings
Electrify your home by replacing gas heating, petrol vehicles, and other fossil fuel appliances with electric alternatives powered by clean solar energy. This delivers significant additional financial savings and substantial carbon emission reductions. Our calculator helps you compare costs and model the financial impact of switching to electric appliances and vehicles.
How Solar Reduces Your Electricity Bills
The calculations below show how your electricity bills change with solar. Your Old Bill of - per month (- annually) is calculated from your total energy consumption multiplied by the grid electricity rate. Your New Bill of - per month (- annually) accounts for solar generation, the percentage you use directly (self-consumption), remaining grid consumption, and feed-in credits for excess energy exported to the grid. This results in monthly savings of - (- annually).
Battery Storage Gauteng
Solar Battery Sizing
With solar-only (no battery), a 6.6 kW system provides approximately 50% self-usage in Gauteng, depending on your consumption patterns, drawing 50% from the grid. Adding a 10 kWh battery increases energy independence to approximately 99% annually, reducing grid reliance to 1%. Battery storage is essential in Gauteng, allowing you to store excess daytime generation for use during load shedding periods and evening hours, providing critical backup power during frequent outages.
Net metering and feed-in tariffs vary by municipality in Gauteng, with rates typically ranging from R0.50-R1.50 per kWh depending on your area. Battery storage is particularly valuable given frequent load shedding, providing backup power during outages. Gauteng's largest installed base of rooftop PV reflects the province's strong commitment to solar energy. For accurate battery savings and ROI calculations specific to your location and municipality, use the full Photonik design tool.
Energy Self Sufficiency Calculator*
*Note: This calculator provides simplified battery self-sufficiency estimates. For accurate per-hour simulations that account for solar generation patterns, consumption timing, battery charging/discharging cycles, and efficiency losses across all seasons, use the full Photonik design tool.
Panel Placement Tool Gauteng
This is a simple panel placement tool that lets you quickly estimate panel count for a single roof area. Try Photonik for advanced features:
- Multiple panel groups
- Custom roof angles
- Panel orientation
- Shade loss calculations
- Panel selection (1000+ models)
- Full integration with our design tool
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Solar & Battery System Cost Gauteng
Understanding Solar & Battery System Costs
A 6.6 kW solar system in Gauteng costs approximately R106,088, while adding a 10 kWh battery increases the total to around R213,957. Gauteng offers competitive installation costs, with Johannesburg, Pretoria, and major cities offering excellent installer coverage and competitive pricing. Solar-only systems typically pay for themselves in around 5.8 years in Gauteng, whilst adding battery storage usually extends payback but significantly improves energy independence and provides critical backup power. Gauteng's combination of excellent solar potential, frequent load shedding, and strong solar adoption makes solar and battery storage particularly attractive, with many systems achieving payback in under 6-8 years.
The cost breakdown shows estimates for equipment costs, installation labour, and VAT. Adjust system size and battery storage to see how it affects total investment and payback periods. Gauteng has excellent installer coverage, with qualified installers operating throughout Johannesburg, Pretoria, and regional areas, providing competitive pricing and quality installations.