What is your rebate worth?
Perth sits in STC Zone 3. Put in a system size and this works out the certificate value, plus the federal battery discount if you are adding storage.
A 6.6kW solar system in Perth attracts roughly $1,800 in federal STC discount (small-scale technology certificates). The federal battery discount is itemised on your quote — we do not publish a dollar-per-kWh rate. Eligible Synergy customers can also access WA interest-free battery loans. All PSW pricing already includes these incentives — see how the schemes stack.
Common sizes: Powerwall 3 = 13.5 kWh · SigenStor module = 8 kWh
$1,778
STC discount
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Battery discount
The solar figure is the federal STC discount (small-scale technology certificates, Perth Zone 3, 2026 deeming). The Cheaper Home Batteries discount is not shown as a dollar amount — the certificate factor changes, and we itemise it on your quote. Eligible Synergy customers may also access WA interest-free battery loans. Advertised prices already include the incentives that apply.
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All three run on the same Perth figures — Zone 3 STC rating, Synergy tariffs and DEBS export rates.