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Learning hub
What the WA and federal battery discounts are worth, who can get them, and how to apply.
Updated for 2026Synergy customers can get two discounts on a new home battery.
For the WA discount, you join a virtual power plant (VPP) for two years. Your installer applies for you, and the discounts come off your invoice.
Connect with WA Battery Scheme approved installers and start saving on your energy bills while earning money from your battery.
Match battery capacity to your usage, solar size, and backup needs.
How Synergy's Home Plan and Midday Saver tariffs and the DEBS feed-in scheme shape the solar and battery decision in WA.
The 1 May 2026 framework: STC tapers, export tiers, and Battery Rewards.
Two separate rebate programs work together to reduce your battery costs.
Australian Government
About $258 per kWh
of usable battery capacity, paid through Small-scale Technology Certificates (STCs).
The battery STC factor steps down every six months until the scheme ends in 2030. The factor on your installation date applies, not the date you sign the contract.
WA Government · Synergy customers
$130 per kWh, max $1,300
An extra state rebate on top of the federal one, for Synergy network (SWIS) customers.
10 kWh capacity cap, so the rebate is paid on the first 10 kWh only. Opting in to a VPP (Synergy Battery Rewards) is a precondition.
| Federal STC rebate | ~$2,584 |
|---|---|
| WA residential battery scheme | $1,300 |
| Total rebates | ~$3,884 |
You need to meet all of these to get the rebate.
At least 5 kWh of usable capacity. The rebate is paid per kWh up to a 10 kWh cap. A larger battery still qualifies; it just gets the capped maximum.
The federal discount applies to batteries connected to new or existing rooftop solar, so you need panels already, or installed with the battery.
You must join a virtual power plant: Synergy Battery Rewards, or an approved alternative from your battery supplier. The agreement runs two years, then you can opt out any time. No VPP means no rebate.
The battery must be on the Clean Energy Council approved list, with an inverter on Synergy’s Supported Solutions List. Other scheme conditions apply. Both lists change, so confirm the exact model at quote time.
Installed by a Solar Accreditation Australia certified installer.
The rebate can only be claimed once per property.
You need a Synergy account and a WA property that’s mainly residential with a reliable internet connection. Renters qualify too, with the landlord’s consent.
The rebate isn’t backdated: batteries installed before 1 July 2025 don’t qualify. Once conditionally approved, you have six months to install, or you re-apply.
$2,001 to $10,000
Loan amount per household
3 to 10 years
To repay, with no early-repayment fee
Under $210,000
Gross household income per year
VPP required
Only if you join a VPP, same as the rebate
Loan applications are processed through Plenti, the scheme’s third-party administrator. The loan and the rebate together can’t exceed what the system and installation actually cost, so it can’t be cashed out.
How VPPs help you earn money while supporting the grid.
A virtual power plant connects thousands of home batteries into one network. When the grid needs extra power at peak times, your battery can export stored energy and you get paid for it.
Synergy Battery Rewards
70c per kWh
your battery exports during an activation event, capped at your battery’s capacity per event.
Grid energy you use in the standby window before an event is credited back, worked out from the tariff rates that apply to your usage.
You can set a reserved minimum charge Synergy can’t touch. Events run automatically through your inverter’s cloud software. You aren’t told beforehand and can’t pick which ones to join.
Earnings depend on how much your battery exports during events, so there’s no fixed yearly figure. The limits:
Up to 30 events a year
Usually 3pm to 9pm on very hot or cold days
On top of DEBS credits
Paid as well as your DEBS export credits, not instead of them
Credits appear on quarterly activity statements and are applied to your next bill.
Your installer handles most of the paperwork.
Contact accredited installers who take part in the WA Battery Scheme. They'll check your home and suggest batteries that suit.
Pick a battery on the Clean Energy Council approved list, with an inverter on Synergy's Supported Solutions List. Confirm the exact model at quote time.
Your installer submits the rebate application for you. The rebate comes off your final invoice.
If you apply for the no-interest loan, Plenti contacts you directly to finish the application.
Once approved, your battery is installed and connected to your VPP (for example, Synergy Battery Rewards).
Worth knowing before you get quotes.
Choose a battery big enough for future needs. You can only claim the rebate once, so adding capacity later means paying full price.
The federal discount steps down every six months through to 2030. From 1 May 2026 it also tapers with size: full rate up to 14 kWh, then lower rates up to 50 kWh of usable capacity. Battery prices are also expected to keep falling, which may offset some of the drop.
A permanent internet connection is needed for the VPP and system monitoring. Make sure it’s reliable where the battery goes.
Pick reputable battery brands with strong warranties. A failed battery can’t be replaced under the rebate, so quality matters.
Get matched with local WA installers, no obligation.