WA solar battery rebate
WA solar battery rebate 2026: state rebate plus federal discount
30-second answer: Western Australia is one of the few states still paying a state battery rebate on top of the federal discount. The WA Residential Battery Scheme pays up to $1,300 for Synergy customers and up to $3,800 for Horizon Power customers, and the federal Cheaper Home Batteries discount takes roughly 30% off the same battery. A 10 kWh battery in Perth may attract around $3,800 in combined support; the same battery in regional WA around $6,300. Check your postcode to see what may apply.
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The WA Residential Battery Scheme opened on 1 July 2025 with 100,000 rebates and is still accepting applications through approved vendors. It stacks with the federal Cheaper Home Batteries discount, which since 1 May 2026 is tiered by battery size and next steps down on 1 January 2027. The state rebate has no income test; a separate no-interest loan of up to $10,000 is available to households with combined income under $210,000.
What battery support may be available in Western Australia
| Layer | Status | Indicative value | Key conditions |
|---|---|---|---|
| Federal Cheaper Home Batteries | Open (tiered from 1 May 2026) | ~30% off; about $250 per usable kWh on the first 14 kWh | 5 to 100 kWh, paired with new or existing solar, VPP-capable, accredited installer, no income test |
| WA Residential Battery Scheme (Synergy area) | Open | $130 per usable kWh, up to $1,300 (capped at 10 kWh) | Perth metro and South West grid (SWIS); join an approved VPP; approved vendor applies for you |
| WA Residential Battery Scheme (Horizon Power area) | Open | $380 per usable kWh, up to $3,800 (capped at 10 kWh) | Regional and remote WA on Horizon Power; join an approved VPP; approved vendor applies for you |
| WA no-interest loan | Open (income-tested) | $2,001 to $10,000 over 3 to 10 years, no interest | Combined household income under $210,000; administered by Plenti; can cover solar and battery |
Indicative only. The WA rebate is fixed per kWh but capped at 10 kWh of usable capacity, so a larger battery receives the same maximum. The federal figure moves with STC prices and is set by the installation date. Confirm current availability and the exact figure with an approved vendor before you commit.
The WA layer: the Residential Battery Scheme
The WA Residential Battery Scheme pays a one-off rebate calculated on usable capacity: $130 per kWh for Synergy customers on the South West Interconnected System (Perth, Mandurah, Bunbury, Busselton, Geraldton and the Wheatbelt towns on the main grid) and $380 per kWh for Horizon Power customers in regional and remote WA (Broome, Karratha, Port Hedland, Kununurra, Esperance, Kalgoorlie and the smaller networks). Both are capped at 10 kWh, so the maximum is $1,300 on Synergy and $3,800 on Horizon whatever size you install. You do not apply to the government yourself: an approved vendor on the Plenti list applies on your behalf and the rebate comes off your invoice. The battery and inverter must be on the Synergy or Horizon Power supported-solution lists and you must enrol the battery in an approved Virtual Power Plant such as Synergy Battery Rewards, Horizon Power’s Community Wave or Plico’s VPP, staying enrolled for at least two years.
The federal layer
The federal Cheaper Home Batteries Program is delivered as STCs your installer usually claims for you and applies as a discount on the invoice; the rules also allow a post-installation rebate or claiming the certificates yourself. Since 1 May 2026 the rate is 6.8 STCs per usable kWh and is tiered: the full rate on the first 14 kWh, 60% of the rate from 14 to 28 kWh, 15% from 28 to 50 kWh and nothing above that. At current certificate prices that is about $250 per usable kWh in the first band, so a 10 kWh battery attracts roughly $2,500 and a 13.5 kWh battery roughly $3,400. The next step-down is 1 January 2027, and the rate then reduces every six months until the program closes at the end of 2030. There is no income test, and the battery can be added to solar you already have. The WA scheme is explicitly designed to sit on top of it, and the WA Government’s own guidance shows the two combined.
The no-interest loan
Households with a combined income under $210,000 may also take a no-interest loan of $2,001 to $10,000, repaid over three to ten years, towards the cost left after both rebates. The loan can cover a battery alone or solar and battery together, is administered by Plenti with a credit check, and the income test applies only to the loan, not the rebate. For a typical Perth household it turns a $9,000 to $11,000 battery into a rebate-reduced balance of around $5,000 to $7,000 that can be spread over the same period the battery is saving on bills.
Worked examples: federal discount plus WA rebate
| Usable capacity | Indicative federal discount | WA rebate (Synergy) | Combined (Synergy) | Combined (Horizon Power) |
|---|---|---|---|---|
| 10 kWh | about $2,500 | $1,300 | about $3,800 | about $6,300 |
| 13.5 kWh | about $3,400 | $1,300 (capped at 10 kWh) | about $4,700 | about $7,200 |
| 20 kWh | about $4,400 (14 kWh at full rate, 6 kWh at 60%) | $1,300 (capped at 10 kWh) | about $5,700 | about $8,200 |
Illustrative, using mid-2026 certificate prices of roughly $250 per usable kWh in the first federal band and about $150 per kWh in the 14 to 28 kWh band, plus the published WA rates. A 10 kWh battery in Perth commonly lists at around $9,000 to $11,000 installed before rebates. Your approved vendor confirms the actual figures for your battery and network area.
WA rebate: a residential property in WA on the Synergy or Horizon Power network, an owner-occupier (renters and landlords are generally not eligible), a battery and inverter on the supported-solution list installed by an accredited installer through an approved vendor, enrolment in an approved VPP for at least two years, and no previous WA battery rebate at the address. Federal discount: the battery must be paired with new or existing solar, 5 to 100 kWh, VPP-capable and installed by an accredited installer; no income test. From 1 May 2026 new and upgraded systems on the SWIS must meet Western Power’s updated technical standards, including remote disconnection capability; scheme-eligible systems already do, and systems that do not are limited to 1.5 kW export.
Why timing matters in WA
The WA rebate runs until the 100,000 allocation is used, which the WA Government has indicated is likely to be around 2027, and demand has been strong since launch. The federal rate drops on 1 January 2027 and every six months after that. Perth install lead times commonly run four to eight weeks and longer in the regions, so a contract signed by early November is the realistic way to be commissioned at the current federal rate and inside the state allocation. Installs completed after a step-down receive the lower federal rate regardless of when they were quoted.
WA-specific factors a good installer will check
Which network you are on. The rebate tripled for Horizon Power customers, so confirm your network before you compare quotes; the boundary is not always where people expect (for example, parts of the Goldfields and Mid West are Horizon).
Export limits and DEBS. Western Power’s 1 May 2026 standards mean a battery system needs remote-disconnect capability to keep full access to the DEBS feed-in tariff and VPP participation. Scheme-approved systems meet this, but it is worth asking whether an existing inverter does.
The VPP commitment. Two years in an approved VPP is a condition of the rebate. Ask how much capacity the VPP can draw, how often, what you are paid per event, and what happens to the rebate if you leave early or move.
Sizing. The WA rebate stops growing at 10 kWh and the federal rate falls after 14 kWh, so a 10 to 14 kWh battery captures almost all the available support. Bigger batteries still qualify but each extra kWh is subsidised at a worse rate.
Other WA upgrades
Western Australia does not run an energy-efficiency certificate scheme like NSW, VIC or SA, so other household upgrades mostly rely on federal STCs. See WA energy rebates for the full picture and the battery rebate calculator for a figure on your own battery size. For how the other state VPP incentive works, see the NSW solar battery rebate page.
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Official sources
Figures on this page were checked against these official pages on 2 September 2026. Scheme rules change; confirm the current settings before you sign anything.
- WA Government: WA Residential Battery Scheme
- WA Government: information for applicants
- Synergy: WA Residential Battery Scheme
- energy.gov.au: WA Residential Battery Scheme
- Australian Government (DCCEEW): Cheaper Home Batteries Program
- Clean Energy Regulator: battery eligibility and STCs
- Clean Energy Regulator: battery rebate changes from 1 May 2026
Related pages
FAQ
WA battery rebate questions
The WA Residential Battery Scheme pays $130 per usable kWh up to $1,300 for Synergy customers and $380 per usable kWh up to $3,800 for Horizon Power customers, both capped at 10 kWh of capacity. On top of that the federal Cheaper Home Batteries discount is worth about $250 per usable kWh on the first 14 kWh at mid-2026 certificate prices, so a 10 kWh battery attracts roughly $3,800 in combined support in Perth and around $6,300 in regional WA.
Yes. The WA scheme was designed to stack with the federal program and the WA Government publishes combined examples. The rebate comes off your invoice through the approved vendor and the federal STC discount is applied by the same installer.
Yes. Applications opened on 1 July 2025 for 100,000 rebates and the scheme remains open through approved vendors. The WA Government has indicated the allocation is expected to last until around 2027, so availability depends on uptake rather than a fixed closing date.
Yes. Enrolling the battery in an approved Virtual Power Plant for at least two years is a condition of the WA rebate and the loan. Approved options include Synergy Battery Rewards, Horizon Power’s Community Wave and Plico’s VPP. The federal discount does not require joining a VPP but the battery must be VPP-capable.
Households with a combined income under $210,000 can borrow $2,001 to $10,000 at no interest over three to ten years towards the cost left after the rebates. Plenti administers the loan and runs a credit check. The income test applies to the loan only; the rebate itself has no income limit.
No. Your approved vendor applies on your behalf and the rebate is deducted from your invoice. The list of approved vendors is published by Plenti, and the battery and inverter must be on the Synergy or Horizon Power supported-solution lists.
Not beyond 10 kWh. The WA rebate is calculated on usable capacity up to 10 kWh, so a 13.5 kWh or 20 kWh battery still receives the $1,300 or $3,800 maximum. The federal discount keeps growing with size but at 60% of the rate from 14 to 28 kWh and 15% from 28 to 50 kWh.
Two things. The federal discount became tiered by size and its rate stepped down, and Western Power introduced new technical standards for solar and battery systems on the SWIS, including remote disconnection capability. Batteries installed under the WA scheme already meet the new standards; the WA rebate amounts themselves did not change.
The WA scheme runs until its 100,000 rebates are allocated, expected around 2027. The federal discount continues to the end of 2030 but steps down on 1 January 2027 and every six months after that, so the combined support is highest for installs completed before the next step-down.
No. We’re an independent information and enquiry service and are not a government website. We don’t guarantee rebate approval.
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