Loading Solar Battery Perth...
Loading Solar Battery Perth...
Perth homeowners on the Synergy network can stack three separate rebates on a solar + battery system. Here's how each one works, what you actually get, and a worked example using the current rates.
On your solar panels (per kW installed)
Small-scale Technology Certificates discount the up-front cost of the panels themselves, based on system size and Perth's STC zone. Claimed once, at install, and assigned to your installer for the discount.
On your battery (per kWh of usable capacity)
The national battery discount is delivered as STCs on your battery's usable capacity. The value steps down each year and tapers for capacity above 14kWh, so the effective rate is highest on right-sized batteries installed sooner.
Synergy customers · $130/kWh, capped at $1,300
Western Australia's own battery rebate for Synergy (SWIS) households, on top of the federal rebates. It pays $130/kWh of usable capacity up to a $1,300 cap (reached at 10kWh), with a 5kWh minimum.
Combined federal battery rebate + WA Residential Battery Scheme by usable capacity, at the current STC rate. Solar STCs on your panels are additional. Figures are indicative estimates assigned as an up-front discount by your installer.
| Usable capacity | Federal battery rebate | WA Battery Scheme | Total battery rebate |
|---|---|---|---|
| 5 kWh | $1,357 | $650 | $2,007 |
| 10 kWh | $2,713 | $1,300 | $4,013 |
| 13.5 kWh | $3,631 | $1,300 | $4,931 |
Synergy (SWIS) network only. The WA scheme caps at $1,300 (reached at 10kWh), so above 10kWh only the federal rebate keeps growing — and that federal rebate itself tapers on capacity above 14kWh.
The WA Residential Battery Scheme pays Synergy (SWIS) customers $130/kWh of usable battery capacity, capped at $1,300. A battery of 10kWh or larger reaches the full $1,300. A minimum of 5kWh usable capacity is required to qualify.
Yes. The federal battery rebate (delivered as STCs on your battery's usable capacity) and the WA Residential Battery Scheme stack — you claim both on the same battery. Federal solar STCs on your panels stack on top again. All three are normally applied as an up-front discount by your installer.
Western Australian households on the Synergy network (the SWIS — Perth, the South West and the Wheatbelt) with a new eligible battery installed by an accredited installer. The battery must be on the approved product list and meet the scheme's connection requirements.
The federal battery rebate steps down each year as the STC value declines, and from 1 May 2026 a capacity taper reduces the STCs claimable on larger batteries (full rate up to 14kWh, reduced above that). Installing sooner generally means a larger rebate.
The WA rebate is maximised at 10kWh of usable capacity (the $1,300 cap), and the federal taper favours batteries up to 14kWh. Beyond that the extra rebate per kWh falls, so size the battery to your evening usage rather than to the rebate — our matcher does this for you.
A battery is far more valuable paired with solar (it stores your daytime generation for evening use), and most installs are solar + battery. The WA Residential Battery Scheme and the federal battery rebate apply to the battery itself; the federal solar STCs apply to the panels.
Answer a few questions and we'll match you with SAA-accredited Perth installers — with the rebates already factored into your indicative pricing. No signup.
Last updated 22 June 2026. Rebate figures are computed from current STC rates and the WA Residential Battery Scheme parameters; they are indicative estimates, not a quote. Sources: Australian Government — solar & batteries and the WA Government Residential Battery Scheme. Western Power / Synergy (SWIS) network only.