How long does solar take to pay for itself in Australia?

For many Australian households, a rooftop solar system pays for itself in roughly 4 to 7 years, though it varies widely. The break-even point depends on your system cost after rebates, how much power you use during daylight hours, your feed-in tariff and your local electricity prices. Use the calculator above with your own figures for an indicative estimate.

Is rooftop solar worth it?

Solar is generally worth it if you can use a good share of the power during the day and your payback period is comfortably shorter than the panels' working life, which is often 20 to 25 years. After the system pays for itself, the ongoing savings are effectively a return on your investment. It is less attractive if your home is empty during daylight or has heavy shading.

How can I get the most savings from solar?

The biggest lever is using power while the sun is shining - run the dishwasher, washing machine, pool pump and air conditioning during the day, and consider shifting hot water or EV charging to daytime. Because feed-in tariffs are low, self-consuming your own solar saves far more than exporting it. Sizing the system to your usage and keeping panels unshaded also help.

Solar Payback Calculator

Estimate how long rooftop solar takes to pay for itself in Australia.

Last verified: 5 May 2026

How long does solar take to pay for itself?

Divide your system cost by your yearly saving. A common Australian range is around 4 to 7 years, but it swings on your usage timing, feed-in tariff and power prices. Source: ASIC MoneySmart.

Worked example. A $6,000 system with a $450 quarterly bill ($1,800 a year) cut by 60% saves $1,080 a year. That's a payback of about 5.6 years and roughly $4,800 ahead over 10 years.

General information and estimates only — not financial, tax, or legal advice. Always verify with a licensed adviser or the ATO.

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How long does solar take to pay for itself?

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