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Solar
Payback calculator

Solar payback calculator

Estimate what a solar system could save and how long it might take to pay for itself. Every figure below is an assumption you can change.

State System size (kW) Installed price before rebates ($)From your quote. Rebates and STCs ($)Often already taken off the quote. Check yours. What you pay for grid power (c/kWh) Feed-in tariff (c/kWh) Share of solar used at home (%)Higher if someone is home in the day. Daily output per kW (kWh) Panel output loss per year (%)

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