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Most Perth homeowners can start saving on electricity bills from day one with the right financing. Here are the main options and what to watch for in WA.
Independent — we don't provide financial advice or receive commissions on financing products.
Maximum long-term return
For Perth homeowners with available savings, cash purchase typically delivers the best 10-year return. With average payback periods of 4–7 years, a 6.6 kW system purchased outright can generate tens of thousands of dollars in lifetime savings.
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Spread payments, start saving immediately
Many WA homeowners finance solar through personal or secured green loans from banks, credit unions, or specialist solar lenders. Compare rates carefully: marketed 'green' products don't always carry the lowest rate. Check comparison sites for current offerings.
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Compare loan options via a mortgage broker or your bank's green finance team before committing.
State-backed loan for battery storage
Synergy has offered interest-free loans to eligible WA residential battery scheme participants alongside the rebate. This program allows homeowners to add battery storage with no upfront interest cost. Eligibility and loan limits vary. Confirm current availability directly with Synergy or your installer before proceeding.
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Confirm current Synergy loan availability with your SAA-accredited installer.
No ownership, minimal upfront cost
Solar leases and power purchase agreements (PPAs) are more common in eastern states than WA. In a lease, a third party owns the panels on your roof and you pay a monthly fee. In a PPA, you pay per kWh generated. Both avoid upfront costs but surrender ownership and the associated rebates (STCs, DEBS, battery scheme). Most WA solar advisors recommend a loan over a lease for homeowners who qualify.
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If a lease is proposed, get an independent comparison against a financed purchase before signing.
STCs reduce the upfront cost regardless of how you finance. A 6.6 kW Perth system qualifies for ~$1,790 in STC rebates applied at point of sale, reducing what you need to borrow or pay.
Compare the 'effective interest rate' on any finance product. Origination fees and account fees can significantly increase the real cost of a low headline rate.
Your installer may offer in-house financing. This can be convenient, but always compare the rate against independent lenders. Bundled finance sometimes carries a premium.
For batteries specifically, check the Synergy website for any current interest-free loan or incentive program before arranging private financing. Stacking a loan on top of the rebate is the most cost-effective route when both are available.
WattMate is independent. We don't provide financial advice or receive commissions on financing products.
For complex financing decisions or large battery systems, speak to a licensed financial adviser alongside your SAA-accredited solar installer.
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