Solar & Battery Installation Perth - South West Local Installers & Quotes
ℹ️ Get quick estimates for solar and battery sizing, costs, and savings in Perth - South West using these simplified calculators. For more accurate, advanced calculations, use the full Photonik design platform.
Solar Design Perth - South West
Energy Usage
To choose the right solar system in Perth - South West, start by understanding your daily electricity consumption. Average daily consumption sits at around 25 kWh for most Perth - South West homes, with energy efficient properties typically using substantially less.
Before installing solar it is often a good investment to first look to reduce your energy consumption where possible. This can be done through improved insulation, and energy efficient appliances.
Typical energy usage per person per day in Perth - South West:
Note: Actual usage varies depending on property size, building efficiency, climate, and appliances.
Solar System Sizing
A 6.6kW solar system would typically cover your average daily electricity consumption. We recommend sizing between 9.9kW and 13.2kW for optimal results as solar output fluctuates daily and seasonally.
Expect around 28.6 kWh daily from a 6.6 kW system in Perth - South West, with production varying from 3.53 kWh/kW/day in June to 4.83 kWh/kW/day in February.
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 Perth - South West
Solar Battery Sizing
Solar-only systems in Perth - South West typically provide 50% self-usage with a 6.6 kW installation, meaning 50% of your electricity still comes from the grid. Adding a 10 kWh battery increases energy independence to approximately 86% annually, reducing grid reliance to 14%.
Use Photonik's complete design tool for detailed battery savings and return on investment analysis.
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 Perth - South West
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 Perth - South West
Understanding Solar & Battery System Costs
Expect to invest approximately $7,661 for a 6.6 kW solar system in Perth - South West, or around $12,904 with a 10 kWh battery included. Most solar-only systems reach payback in approximately 5.1 years, though battery storage lengthens payback periods whilst substantially boosting energy independence.
The pricing breakdown includes equipment, installation labour, and applicable taxes. Use the sliders to adjust system size and battery capacity to see how pricing and payback change.
STC Rebates Perth - South West
STC rebates in Perth - South West are calculated based on your system size, location zone factor, and deeming period until 2031.
Use our full design tool for detailed system design, panel placement, and professional proposals.