Solar Calculator Australia Calculate estimate

Estimate Your Solar Savings

Enter your address and a few details about your electricity usage to estimate system size, solar generation, installation cost and long-term savings.

Select your address from the dropdown to check rooftop solar data.

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Your estimate —

Recommended solar system size

Roof data Manual estimate
— Roof capacity
— Panel estimate
— Usable array area
— Sunshine hours/year
Source data: Manual

Add an address to check available rooftop solar data.

Annual generation —
Install cost —
Solar rebate Solar rebate estimate is based on Small-scale Technology Certificates, system size, postcode zone and deeming period. It is usually applied as an upfront discount by the installer. —
Yearly savings —
Payback period —
20-year savings —

This is an indicative estimate only. Actual solar savings vary based on your roof, location, usage patterns, electricity plan, installer pricing and available incentives. Solar rebate estimates are based on Small-scale Technology Certificates and are usually applied as an upfront discount by the installer.

Get solar quotes based on my estimate

What your solar estimate includes

Your result combines your address, electricity bill, household size and available rooftop solar data to create a practical solar estimate.

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Recommended system size

A suggested solar system size based on your electricity use, household details and available rooftop potential.

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Annual generation

An estimate of how much electricity your solar system may generate across a typical year.

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Install cost

A broad installed cost range to help you understand what a system of this size may cost.

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Estimated rebate

An indicative rebate estimate based on common Australian solar incentive assumptions.

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Yearly savings

A savings estimate based on solar self-consumption, exported energy and electricity rate assumptions.

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Payback period

An estimate of how long it may take for your solar savings to offset the upfront system cost.

How your solar savings are calculated

Your estimated savings are based on how much solar electricity your system may generate, how much your household uses directly, and how much excess solar is exported back to the grid.

Solar used at home Offsets electricity you would otherwise buy from the grid.
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Solar exported May earn a feed-in tariff from your electricity retailer.
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Estimated yearly savings Your indicative annual solar benefit.
Self-consumption Higher value

Solar power used directly in your home usually saves more than exported solar.

Feed-in tariff Export value

Excess solar sent to the grid may earn a smaller credit on your bill.

Battery choice Usage shift

A battery may increase how much of your solar energy you can use at home.