WA Residential Battery Scheme · Synergy (SWIS) customers

Which batteries qualify for the WA rebate?

Eligibility depends on the inverter your battery is wired to, not the brand on the box. Here is what qualifies, how to check any model, and what the rebates are worth.

Qualifies: any battery on an SSL-listed inverter
Never qualifies: Tesla Powerwall 3
VPP sign-up is mandatory

Explore your options Compare batteries

WA rebate

$130/kWh

Capped at $1,300, reached at 10kWh

All battery rebates, 10kWh

$4,013

Federal and WA combined, indicative

Synergy Battery Rewards

70¢/kWh

Our model puts a 10kWh battery at about $30–$60 a year, across a typical 6–12 events

Minimum battery size

5kWh

Usable capacity, installed from 1 July 2025

The one rule that decides it

The inverter decides, not the battery badge

Synergy's Supported Solutions List (SSL) is the register that gates the WA rebate. It is a list of approved inverters, not batteries.
A battery qualifies when the system it's wired into uses an SSL-listed inverter that Synergy has approved for the battery scheme. Two batteries with identical cells can sit on opposite sides of the rebate line purely because of what they're paired with.
A battery with a built-in inverter that isn't approved for the scheme can never qualify, no matter what it's installed alongside. The best-known example is the Tesla Powerwall 3. Its integrated inverter is on the SSL but not approved for the battery scheme, so a Powerwall 3 system is not eligible for the WA rebate. That's not a pairing you can fix; it's the design.

So don't shortlist by brand reputation and hope. Every battery in our product index shows its Synergy eligibility verdict on the model page, and the matcher only proposes configurations that keep the rebate if the rebate matters to you. Check first, fall in love second.

The three rebates you can stack

All three are normally applied as an up-front discount by your installer.

1. Federal solar STCs

On your solar panels, per kW installed

Varies by system size

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.

2. Federal battery rebate

On your battery, per kWh of usable capacity

$1,357 to $3,631 for 5 to 13.5 kWh

The national battery discount is delivered as STCs on your battery's usable capacity, for batteries connected to new or existing rooftop solar. The factor steps down every six months and tapers band by band above 14kWh, so the effective rate is highest on right-sized batteries installed sooner.

3. WA Residential Battery Scheme

Synergy (SWIS) households, per kWh of usable capacity

$130/kWh up to $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.

What the battery rebates add up to

Federal battery rebate plus the WA Residential Battery Scheme, by usable capacity, at the current STC rate. Solar STCs on your panels come on top.

Usable capacity	Federal battery rebate	WA Battery Scheme	Total
5 kWh	$1,357	$650	$2,007
10 kWhWA cap reached	$2,713	$1,300	$4,013
13.5 kWh	$3,631	$1,300	$4,931

Synergy (SWIS) network only. Figures are indicative estimates, assigned as an up-front discount by your installer, not a quote.
The WA scheme caps at $1,300 (reached at 10kWh), so above 10kWh only the federal rebate keeps growing.
The federal rebate itself tapers on capacity above 14kWh and stops entirely at 50kWh, the maximum battery capacity STCs are paid on.
For the money detail, the stacking examples show how federal and WA support combine on real system sizes, and the eligibility checklist walks the conditions in claim order. The 6.6kW and 10kW solar and battery guides price both rebates into Perth's common system sizes.

Are you eligible?

You need all 8. The 3 marked with a warning icon forfeit the rebate outright if missed.

You're a Synergy customer on the SWIS networkPerth, South West or Wheatbelt. Aged 18+ and an Australian permanent resident.
Your battery has at least 5kWh of usable capacityAnd it is on the Clean Energy Council approved list.
You join a Virtual Power PlantThis is mandatory. You can install a battery without joining one, but then no rebate is paid. The VPP agreement runs an initial two-year term.
The battery is installed on or after 1 July 2025The rebate is not retrospective.
Your system is CSIP-AUS compliant and on the Synergy Supported Solutions ListFrom 1 May 2026, new and upgraded systems must also meet Western Power's WEM Procedure technical standards.
The property is an eligible WA homeStandalone or unit titled, primarily residential, owned (or rented with the landlord's consent), with a reliable internet connection.
You go through an approved vendorThey apply for the rebate on your behalf. You don't apply to government directly. Plenti administers the scheme and publishes the approved-vendor list.
You haven't already claimed at this propertyOne WA Residential Battery Scheme rebate per property.

Ongoing credits once you are in a VPP

Synergy battery rewards

Earn credits when Synergy uses your battery to support the grid at peak times. Joining a VPP is mandatory for the WA Battery Scheme rebate, and always has been.

Calculate VPP earnings

70¢

per kWh discharged during an event

$30–$60

a year on a 10kWh battery, across a typical 6–12 events

events a year at most

How it works

WhenPeak demand, typically 3-9pm
What happensSynergy remotely discharges your battery
You earn70¢ for every kWh discharged
Event lengthAbout two hours on standby, then roughly 2–4 hours of discharge, up to six hours in all
NoticeNone in advance. Events show on quarterly statements
PlusDEBS peak export credits, 10¢/kWh during 3pm-9pm

Who can join

Open toBatteries installed through the WA Residential Battery Scheme only
Battery size5kWh usable minimum
SystemCSIP-AUS compliant, on the Synergy Supported Solutions List
InternetA reliable connection, for remote management
TariffA1, K1, Midday Saver, Electric Vehicle Add On
Not availableProperties with life-support equipment, or already in another VPP program

DEBS and other WA programs

Programs that add to your savings beyond the two rebates.

Distributed energy buyback scheme (DEBS)

Time-of-use credits for the solar you export. Paid on top of Battery Rewards activation credits.

Peak (3pm-9pm)10¢/kWh
Off-peak2¢/kWh

Customer tier export limits

From May 2026, your export limit depends on the tier you choose.

Tier	Export limit	Credits
Tier 0no internet needed	1.5kW	No DEBS
Tier 1ESM participant	5kW	DEBS
Tier 2VPP	Dynamic, up to 30kVA	DEBS and Battery Rewards

How to claim your rebates

The two rebates are claimed differently. Your installer applies the federal STC discount. An approved vendor lodges the WA rebate for you.

Federal STC rebate · your installer handles it

1
Choose a CEC-approved battery
Use the comparison tool.
2
Get quotes from SAA-accredited installers in Perth
3
Installer calculates the STC value
And applies the discount to your quote.
4
Accept the quote with the rebate already deducted
5
Installation to Australian standards
6
Installer files the STC paperwork and registration
7
Start saving on your energy bills

Before you sign

Most installers handle the entire STC rebate process on your behalf. The rebate value is deducted from your final invoice, meaning you pay less upfront. Always confirm this with your installer before signing any contracts.

WA Battery Scheme rebate · your vendor lodges it

1
Choose an approved vendor
You don't apply to government yourself. Plenti administers the scheme and publishes the approved-vendor list.
2
Your vendor lodges the application
On your behalf, including the no-interest loan if you want it.
3
Conditional approval
You then have six months to have the battery installed, or you have to re-apply.
4
Join a Virtual Power Plant
Mandatory for the rebate, on an initial two-year term.
5
Installation and commissioning
Against Synergy's requirements.
6
Rebate applied through your vendor

Go deeper

Detail pages, calculators and step-by-step help for claiming the federal and WA incentives above.

Rebate detail and calculators

Federal STC rebate detailsEligibility and the taper schedule STC timing calculatorYour rebate by installation date Full savings calculatorRebates, VPP credits and energy savings together

Claiming, step by step

Eligibility checklistProduct lists, accreditation, VPP/SSL status and paperwork before you commit Paperwork & proofsDocuments and identifiers your vendor or installer will ask for Stacking examplesHow federal and WA support combine, with worked examples Timelines & queuesWhy incentive windows cause rushes and how to plan around supply The 1 January 2027 step-downWhat changes on the date, what does not, and the dollar difference on a 10 kWh battery Paying for a batteryHow rebates, vendor 0% WA loans and green finance fit together

Frequently asked questions

Open a question to read the answer.

How much is the WA battery rebate?

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.

Can I claim the federal battery rebate and the WA rebate together?

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.

Who is eligible for the WA Residential Battery Scheme?

Western Australian households on the Synergy network (the SWIS — Perth, the South West and the Wheatbelt), with a new eligible battery of at least 5kWh usable capacity installed on or after 1 July 2025 by an approved vendor. The battery must be on the Clean Energy Council approved list, and the household must join a Virtual Power Plant — VPP participation is mandatory, and declining it means no rebate. One rebate per property, and your approved vendor lodges the application for you.

Is the federal battery rebate being reduced?

The federal battery rebate steps down every six months as the STC factor declines, and since 1 May 2026 a capacity taper also reduces the STCs claimable on larger batteries (full rate on the first 14kWh, reduced marginal rates above that). The factor that applies is the one in force on your installation date, not the date you sign — a quote can't lock in an earlier rate.

Does the rebate change how big a battery I should buy?

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.

Is there an interest-free loan as well?

Yes. Alongside the rebate, the WA Residential Battery Scheme offers eligible households a no-interest loan of up to $10,000, gated on household gross income under $210,000. It requires the same VPP participation, and your approved vendor lodges the loan application with the rebate. How the scheme loan differs from a retailer's interest-free plan.

Do I need solar to get the battery rebate?

For the federal battery rebate, yes — it applies to eligible batteries connected to new or existing rooftop solar, so a battery with no solar behind it doesn't qualify. A battery is far more valuable paired with solar anyway (it stores your daytime generation for evening use), and most installs are solar + battery. The WA Residential Battery Scheme and the federal battery rebate are both claimed on the battery; the federal solar STCs are claimed on the panels.

Adding a battery to an existing solar system? Our adding a battery to solar guide covers hybrid vs non-hybrid inverters, AC/DC coupling and gateway devices.

New to home storage and want the whole picture first? Start here: solar batteries in Perth.

Want to take the next step?

Get a quote from an installer from our network that covers your area. You choose whether to act on it. No obligation.

Last updated 5 October 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.

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