Updated for 2026
The WA battery rebate, in actual dollars
Two separate schemes take money off a home battery in WA right now. And they stack. Solar STCs on the panels and bill-side concessions sit on top of that, and every entry below comes with the conditions that decide whether you qualify.
Federal Small-scale Technology Certificates (STCs)Available now
Australia-wide incentive that reduces your upfront cost
How it works
- STCs are generated based on your system size and location (WA is Zone 3)
- Your installer assigns STCs to reduce the system price upfront
- The subsidy shrinks each year until the scheme ends in 2030, so installing sooner earns more certificates
Estimated STC value by system size
* Based on current STC price of ~$40, Zone 3 (Perth). Values decrease each year until 2030.
STC spot price: ~$40 (as of September 2026). Prices fluctuate. Check the CER STC clearing house for current rates.
The deeming period (the years of generation your STCs count) drops by one each 1 January until the scheme ends in 2030. Installing sooner means more STCs and bigger savings.
Applied at point of sale: your installer handles the STC paperwork and deducts the rebate from your invoice.
Federal battery discount (Cheaper Home Batteries)Available now
The battery-side STC discount. It's separate from the solar STCs above, and it stacks with the WA scheme below
How it works
- Delivered as STCs on your battery's usable capacity, for batteries connected to new or existing rooftop solar
- Your installer claims the certificates and takes the value straight off the quote. No paperwork on your side
- The certificate factor steps down every six months, and the factor that applies is the one in force on your installation date, so a quote can't lock in an earlier rate
- Bigger batteries taper: the full rate applies to the first 14kWh, reduced marginal rates above that, and nothing past 50kWh
Estimated discount by usable capacity
* At the current certificate factor and ~$40 STC price. Steps down every six months until the program ends.
The step-down schedule is published in advance, so waiting has a known cost. Knowing the next date helps you plan, but it's never a reason to rush into the wrong system.
The WA Residential Battery Scheme below. Both are claimed on the same battery, and both come off your quote as an upfront discount.
WA Residential Battery SchemeOpen applications
A per-kWh rebate on your battery, plus an interest-free loan if you qualify
Key benefits
- Synergy customers: $130/kWh rebate, up to $1,300 (10kWh cap)
- Interest-free loans up to $10,000 (income cap $210,000)
- The system's inverter must be on Synergy's Supported Solutions List. The inverter pairing decides eligibility, not the battery brand. Check which batteries qualify
Eligibility requirements
- Western Australian resident
- Property owner (owned outright or mortgaged)
- Property connected to the main Perth and South West grid (SWIS)
- Synergy customer
- You join a Virtual Power Plant. It's mandatory: say no to the VPP and there's no rebate
- The battery has at least 5kWh of usable capacity
You don't apply for this one yourself. An approved vendor lodges the rebate (and loan) application for you before the install, and the approved rebate is paid straight to them, so it comes off your price upfront. Plenti, the scheme administrator, publishes the vendor list. Once you're conditionally approved, you've got six months to get the battery installed. One rebate per property. The loan changes when you pay, not how much: only the rebate changes the price.
Synergy solar export payments (DEBS)
Get paid for the solar energy you export to the grid
Current buy-back rates
Peak (3pm - 9pm)
Weekdays
10¢/kWh
Off-Peak
All other times
2¢/kWh
~$175/year
DEBS earnings example
Maximising your export value
- With a battery, store midday solar and export during peak hours for 10¢/kWh
- Without a battery, most exports happen at off-peak (2¢/kWh)
- Self-consumption (using your own solar) saves ~33.26¢/kWh
Self-consuming your solar energy saves you the full retail rate (~33.26¢/kWh), which is 3-16x more valuable than exporting. Focus on maximising self-consumption first.
Energy concessions for eligible households
Additional support for pensioners, seniors, and healthcare card holders
Energy Assistance Payment
$342.85/year
Taken off the energy you use at home, electricity and gas alike
For Health Care Card, Pensioner Concession Card, or Veterans' Affairs Gold or Pensioner Concession Card holders
Household Energy Efficiency Scheme
Free upgrades
Free energy-efficient appliances and upgrades for eligible low-income households
LED lighting, draught sealing, hot water system upgrades, and more
Apply through Synergy with your concession card details and account number, and the credit is applied straight to your bill. If Synergy does not bill you directly, as with an embedded network or a caravan park, apply through the Energy Concession Extension Scheme instead.
How rebates stack together
Most rebates can be combined: here is what works together and what does not
Can be combined
- Federal battery discount + WA Battery Scheme: both claimed on the same battery, applied together on the invoice
- Federal solar STCs + the battery stack: the panel-side STCs stack on top again for solar + battery installs
- EAP + DCR: the bill-side concessions stack on the same account
- Federal STCs + EAP concession: upfront rebate plus ongoing bill credits
- Any solar/battery rebate + DEBS or REBS: feed-in rates are separate from install rebates
Cannot be combined
- Solar export schemes (DEBS + REBS): mutually exclusive; new systems use DEBS automatically. REBS is grandfathered only where Synergy received the REBS application on or before 7 September 2020.
Related guides
WA Battery Scheme 2026: how to claim your $1,300 battery rebate
The WA Battery Scheme gives eligible Synergy customers up to $1,300 off a home battery. Here's exactly who qualifies, how the application works step by step, and what to do if your claim stalls.
How the STC solar rebate works in Perth: what installers don't always explain
The STC rebate cuts your solar quote by roughly $1,700 to $4,000 or more, but most Perth households don't understand how it's calculated, why it varies between quotes, or how fast it shrinks before the scheme ends in 2030. Here's how it actually works.
WA electricity rebates and incentives 2026: complete guide
All the rebates, subsidies, and incentives available for WA households in 2026. From solar STCs to energy hardship support, find out what you're entitled to.
Synergy Battery Rewards VPP: can you actually earn money from your home battery?
How Synergy's Virtual Power Plant pays 70c/kWh during peak events, the mandatory VPP requirement for the WA battery rebate, and what typical earnings look like.
Calculate your total savings
Upload your electricity bill and we'll show you exactly how much you can save with solar, batteries, and available rebates.
Information on this page is current as of September 2026 and is provided for general guidance only. Rebate values, eligibility criteria, and program availability are subject to change. Please verify details with official government sources before making financial decisions.