Eligible households can access up to $3,800 in rebates (or up to $7,500 when combined with the federal battery rebate) and up to $10,000 in interest-free loans to install home batteries, helping reduce power bills and strengthen WA’s electricity grid.
Note: There are 100,000 rebates available statewide. As of late 2025, the WA Government expects the scheme to remain available until around 2027 or until allocations are exhausted. The WA rebate can also be combined with the Federal Battery Rebate Guide, subject to eligibility.
The rebate is expected to significantly improve the solar battery payback period for customers in WA.
Table of contents
Overview of the WA Home Battery Rebate Program
The WA Government has committed $337 million to help households install battery storage systems. Under the Residential Battery Scheme, eligible homeowners on the Synergy and Horizon Power networks can access:
- Up to $1,300 rebate for Synergy customers ($130/kWh for up to 10 kWh)
- Up to $3,800 rebate for Horizon Power customers ($380/kWh for up to 10 kWh)
- Interest-free loans up to $10,000 for households with less than $210,000 income
The rebate is delivered as an upfront point-of-sale discount applied by an approved vendor at the time of installation.
You are not limited to a 10 kWh battery, but rebates apply only to the first 10 kWh of usable capacity, and only one rebate is available per property.
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WA Battery Rebate Amounts
Rebates are capped at one battery system per property and apply only to new or replacement batteries installed on or after 1 July 2025.
| Customer Type | Rebate Rate | Max Rebate | Notes |
| Synergy Customers | $130 per usable kWh | $1,300 | For metro WA |
| Horizon Customers | $380 per usable kWh | $3,800 | For regional/remote WA |
- Rebates apply to the first 10kWh of usable capacity only
- Delivered as upfront discounts via approved vendors
- Must use new or replacement batteries only (no second-hand)
Interest-Free Loans
The WA Government is offering 0% interest loans up to $10,000 to eligible households:
- Amount: $2,001 – $10,000
- Term: 3 to 10 years
- Eligibility: Household income under $210,000 (based on the most recent tax return, up to 18 months prior) and subject to credit approval.
- Covers: Battery systems, solar panels (if bundled with a battery), hybrid inverters
Eligibility Criteria
To qualify for the rebate or loan, you must:
- Be 18+ and a permanent resident of Australia
- Live in WA and be a Synergy or Horizon Power customer
- Own or rent the property with appropriate permissions
- Install new or replacement batteries with minimum 5kWh usable capacity
- Use approved vendors accredited by Plenti (the scheme administrator) and approved products that meet WA network requirements.
- Connect the battery to an approved Virtual Power Plant (VPP) for a minimum participation period of two years.
- Batteries must appear on the Clean Energy Council (CEC) approved battery list
- Inverters must be listed on the Synergy or Horizon Power Supported Solutions List (depending on location)
- Only one rebate-eligible battery system per property is permitted
Note: Batteries installed before 1 July 2025 are not eligible.
Loan approvals are conditional. Installation must be completed within six months of approval, otherwise the application may need to be resubmitted.
Late repayments may incur a $10 per week fee, capped at $120 per year.
Also Eligible:
- Landlords with long-term tenants
- Renters with landlord permission
- Home businesses (if primarily residential)
Not Eligible:
- Government-owned properties
- Banks, telcos, or mining/resource companies
Virtual Power Plant Requirements
To qualify, all batteries must be enrolled in a Virtual Power Plant (VPP):
- Must be internet-connected
- Must be able to respond to grid signals
- Participation required for both rebates and loans
- In the Synergy network, customers must join Synergy’s VPP or an alternative VPP that meets WA Government eligibility criteria (e.g. Plico).
- VPP participation is required for a minimum of two years. After this period, customers may choose to opt out of the VPP without affecting their rebate eligibility.
- Installation must occur within six months of conditional approval
How to Apply
Your installer or approved vendor applies on your behalf – you do not apply directly to the WA Government. The approved vendor submits your application via Plenti, which administers the rebate and loan on behalf of the WA Government.
Step-by-step:
- Confirm you’re eligible (see above)
- Request quotes from approved WA installers
- Choose battery + VPP-compatible system
- Installer submits your application via Plenti
- Loan (if applicable) undergoes credit check
- Battery is installed and connected to VPP
- Rebate is applied upfront; loan repayments begin after installation
You can also review the official WA Government Scheme Information for Applicants here.
Combining WA and Federal Rebates
Yes – WA customers can stack the WA Battery Rebate with the Federal Government’s Cheaper Home Batteries Program.
| Example (10kWh Battery) | WA Rebate (Synergy) | Federal Rebate | Total Saving |
| Synergy Customer | $1,300 | ~$3,440 | ~$4,740 |
| Horizon Customer | $3,800 | ~$3,440 | ~$7,240 |
Note: Federal rebate = $344 per usable kWh. Federal rebate values vary depending on STC price and program settings at the time of installation.
Applies to homes, businesses, and community facilities. Not income-tested.
Read the Full Federal Rebate Guide →
Battery Cost Example
| System | Retail Price | WA Rebate | Federal Rebate | Interest-Free Loan | Final Out-of-Pocket |
| 10kWh Battery | $12,000 | $3,800 (Horizon) | $3,350 | $4,850 (loan) | $0 upfront* |
*Loan repaid over 3 to 10 years, interest-free, subject to eligibility and credit approval
Check latest prices in our Battery Price Index →
Choosing the Right Battery
With rebates in place, beware of low-quality systems offered at discount prices.
Choose batteries that are:
- On the WA Approved List
- VPP-compatible
- Backed by 10+ year warranties
- Positively reviewed by Australian customers
Browse Solar Battery Reviews and Compare Trusted Brands →
Why Are Horizon Customers Getting More?
Horizon Power services regional and remote WA, where electricity infrastructure is more expensive and less reliable. Higher rebates reflect the greater cost of batteries in these off-grid or microgrid locations, offering improved energy security and cost savings.
What Can the Interest-Free Loan Cover?
Alongside rebates, the scheme includes means-tested loans to help eligible households afford a system. These loans can be used for:
- Battery-only systems
- Combined solar + battery packages
- New or replacement solar panels (only when bundled with a battery)
What Are VPPs and Why Do I Need To Join One?
A Virtual Power Plant (VPP) is a group of interconnected home batteries that can be controlled remotely by a VPP operator to support the electricity grid. Typically homeowners are paid a fee or offered a bonus feed in tariff to participate in VPPs making it more worthwhile than using their energy within their home.
To participate in a VPP a battery must:
- Be connected to the internet
- Be able to respond to signals from the grid
The company who installs your battery will be able to support you in connecting to a VPP.
The intent of the WA government is for the 100,000 batteries they intend to subsidise to help stablise the WA electricity grids along with benefit individual homes. Batteries operating in a VPP can help stabilise volatility in voltage and frequency in the grid and handle spikes in demand. Over
Final Thoughts
The WA Battery Rebate offers a rare opportunity to secure clean, affordable, resilient energy at home. Only 100,000 rebates will be issued statewide, and demand is expected to be high as households seek to combine state and federal incentives to reduce battery payback periods.
Compare Battery Quotes From Local Installers
Frequently Asked Questions (FAQs)
Yes. For a typical 10 kWh system, combined savings can reach around $5,000 (Synergy) or $7,500 (Horizon Power), depending on federal rebate settings at the time of installation.
Households with income under $210,000 (must pass credit check).
Yes – if landlords provide written consent and the property is residential.
The battery must be internet-connected, capable of remote control, and compatible with an approved VPP for at least two years.
No – only residential and home businesses.
No – only new or replacement batteries on the approved list.
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