Solar Quote / Payback Checker
Check what drives your solar quote’s savings, and how long it could take to recover the upfront cost.
Your home and generation estimate
Compare a new rooftop solar system with keeping a home without solar. For a battery bundle, ask for a separate solar-only quote. Existing solar upgrades and battery savings need a separate model.
Add up 12 months of electricity use from your bills.
Use the total panel capacity, not the inverter rating.
Use the installer’s site-specific AC estimate after shading, system losses and export curtailment. No location or weather estimate is supplied here.
Share of solar generation used while it is generated, not the share of household usage covered. Use interval data or an installer estimate; annual usage alone cannot establish this.
Your electricity rates
Enter 0.30 for 30 cents. For time-of-use plans, use the weighted rate for the imports solar would replace.
Use your confirmed export rate, or zero for no credit. Assumes a flat, non-negative rate for all exported energy; export fees and tiered tariffs are not modelled.
The installed quote
Include GST, installation, electrical work, metering and other quoted costs.
Leave at zero if already deducted from the quote. Enter confirmed amounts only; eligibility is not calculated.
Optional annual allowance; zero excludes maintenance. Inverter replacement is not included.