Solar & Battery Calculator
// Upload Your Bill. Get Your Solar Solution.

Find your perfect
solar system size.

Upload your electricity bill and we'll calculate the optimal solar panel and battery system to wipe out your electricity costs for good.

Calculate My System
LIVE DEMO
1
Your Electricity Usage
How much power does your household use?
Tap to upload your electricity bills
Upload up to 4 bills for a more accurate annual average.
One bill works too — more bills means better accuracy.
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✦ Up to 4 bills · All AU & NZ retailers
2
Location & Conditions
Affects solar generation estimates
Your Energy Retaileroptional
State / Region
Roof Orientation
Roof Tilt
Shading
3
Goals & Preferences
What matters most to you?
Primary Goal
Budget Range
Panel Wattage per panel
Feed-in Tariff (FiT) ¢/kWh exported
¢/kWh
Household Size
EV / High load
I already have solar ? Turn this on if you already have solar panels installed. We will only recommend a battery (and additional panels if your existing system is too small to cover your usage).
Auto-detected from your bill if it shows a solar feed-in tariff or exports
Include battery storage ? Without battery storage, solar only powers your home while the sun is shining. Battery stores excess solar energy for evenings and overnight — essential for 90%+ self-sufficiency and a zero electricity bill.
Recommended — required for 90%+ self-sufficiency
EV charger integration
Size system to include smart EV charging
Hot water system (heat pump)
Use excess solar for hot water
Disclaimer: These results are estimates based on typical industry assumptions and publicly available solar irradiance data. Actual system performance varies with specific site conditions, panel brand, inverter efficiency, installer quality, and energy usage patterns. Always obtain quotes from accredited solar installers (CEC-accredited in Australia) before purchasing.
Your System
Recommendation
☀️

Fill in your usage details and click "Calculate My System" to see your personalised solar and battery recommendation.