Two rebates now cut the cost of a home battery in Western Australia: the federal Cheaper Home Batteries Program and the WA Residential Battery Scheme. Together they take thousands of dollars off a battery, and the federal one steps down on 1 January 2027.
This guide explains how each scheme works, what it pays in late 2026, who qualifies, how they combine, and the grid rules and buyback rates that decide what a battery saves you.
Install before 31 December 2026 to lock in this year's rebates.
From 1 January 2027 the federal battery rebate drops by about 16% (STC factor 6.8 → 5.7) and the solar panel rebate by about 20% (deeming period 5 → 4 years). It falls again in July 2027. The WA $1,300 rebate is limited to 100,000 households and is paid until the allocation runs out. Installation slots before Christmas fill fast, so lock in a date now.
The energy landscape in Western Australia is evolving rapidly. With rising electricity costs and a growing desire for energy resilience, home battery storage has become a crucial component of a modern solar system. Batteries allow you to capture the solar energy generated during the day and store it for use when the sun isn't shining, typically in the evenings when grid electricity prices are higher. This practice, known as increasing "self-consumption," drastically reduces your reliance on the grid and can lead to substantial long-term savings.
The Australian Government's Cheaper Home Batteries Program, which commenced on 1 July 2025, is a key federal initiative designed to reduce the upfront cost of installing home battery storage systems. It is open to households, businesses and community organisations.
Unlike a direct cash rebate, the Cheaper Home Batteries Program is delivered as an upfront discount through the Small-scale Renewable Energy Scheme (SRES), specifically by generating Small-scale Technology Certificates (STCs) for eligible battery systems. Your accredited solar and battery installer claims these STCs on your behalf, and the value is then deducted directly from the total purchase and installation cost of your battery system. This means you pay a reduced price upfront, simplifying the process for consumers.
The Government's aim is a discount of about 30% of the cost of a battery. The number of STCs depends on the battery's usable capacity and an STC factor that falls every six months.
| Installed | STCs per usable kWh |
|---|---|
| January to April 2026 | 8.4 |
| 1 May to 31 December 2026 (now) | 6.8 |
| 1 January to 30 June 2027 | 5.7 (about 16% less) |
| 1 July to 31 December 2027 | 5.2 |
Since 1 May 2026 the factor is also tapered by size: usable capacity up to 14 kWh earns 100% of the factor, 14 to 28 kWh earns 60%, and 28 to 50 kWh earns 15%. Each STC is worth roughly $36 to $40 in 2026, so the first 14 kWh earns about $245 to $270 per kWh today.
Nothing is paid for usable capacity above 50 kWh; systems up to 100 kWh are eligible.
Program funding is about $7.2 billion. Rebates step down on 1 January 2027 and keep falling every six months, so a battery installed in 2026 gets more than the same battery installed in 2027.
To be eligible for the Federal Cheaper Home Batteries Program, your battery system must meet several criteria:
Crucially for Perth homeowners, this federal rebate is stackable with state-level battery incentives, including the WA Residential Battery Scheme.
Beyond the federal incentives, the Western Australian government has introduced its own significant support for homeowners through the WA Residential Battery Scheme. Launched in July 2025, this state scheme provides both rebates and interest-free loans to eligible Synergy and Horizon Power customers, making battery storage even more accessible for households across Perth and regional WA.
The value of the state rebate depends on your electricity retailer and the usable capacity of your battery system, capped at 10 kWh:
The maximum is based on 10 kWh of usable capacity; larger batteries get the same maximum. The scheme is paid until its 100,000 planned rebates are used, which the WA Government expects to last into 2027. There is no fixed closing date.
The WA Residential Battery Scheme has specific eligibility criteria that applicants must meet:
In addition to the rebate, eligible households can get a no-interest loan of up to $10,000, repaid over up to 10 years. Plenti administers the loans.
Eligibility for the interest-free loan is means-tested: your combined household income must be under $210,000 per year. It's important to distinguish that while the loan is income-dependent, the WA Residential Battery Scheme rebate itself is not means-tested; every eligible homeowner receives the same rebate regardless of income. Check on wa.gov.au what the loan can be used for.
Navigating solar and battery ownership in WA also means understanding the roles of the main energy players: Synergy, Horizon Power, and Western Power.
For homeowners in the Perth metropolitan area and the South West Interconnected System (SWIS), Synergy administers the Distributed Energy Buyback Scheme (DEBS). This scheme pays you for any excess solar energy your system exports to the grid. Rates effective 1 July 2025:
They apply to the first 50 kWh exported each day and are reviewed each year.
This differential pricing strongly incentivises the use of home batteries. By storing your midday solar surplus, a battery allows you to either use that energy yourself during peak times (saving grid power at about 33.26 cents per kWh on Synergy's Home Plan (A1), as at 1 July 2026) or export it to the grid at the higher 10 cents per kWh peak DEBS rate. Effectively, self-consumption of your solar energy is generally worth significantly more than exporting it, roughly 3 to 16 times the DEBS credit.
Horizon Power customers in regional WA have their own buyback arrangements, with rates that vary by town. Check Horizon Power's website for yours.
Western Power manages the South West Interconnected System (SWIS), the electricity grid covering Perth, the South West, and the Great Southern regions. To manage the increasing penetration of rooftop solar and battery systems, the WA Government introduced new connection rules that took effect from 1 May 2026. These updates apply to all new and upgraded solar and battery systems connected to the SWIS.
Key changes and what they mean for homeowners:
These changes are designed to support the grid as more renewables come online, while also providing customers with greater flexibility and the ability to participate more actively in the power system.
The WA Government says the WA scheme is in addition to the federal program, so you can have both.
Consider an illustrative example for a 10 kWh home battery installation in Perth as of October 2026:
For a Horizon Power customer, the same battery gets roughly $6,250 to $6,520 (the same federal amount plus up to $3,800). Installed after 1 January 2027, the federal part would be 57 STCs instead of 68.
Important Consideration: Federal STC Reductions The battery STC factor falls every six months, next on 1 January 2027 (6.8 → 5.7, about 16% less), and the solar panel rebate falls each January as the deeming period shortens (5 years in 2026, 4 years in 2027, about 20% fewer solar STCs). The WA scheme is paid until its 100,000 rebates are used.
A crucial component of the WA Residential Battery Scheme is the mandatory participation in a Virtual Power Plant (VPP). But what exactly is a VPP, and what does it mean for you as a homeowner?
A Virtual Power Plant is essentially a coordinated network of decentralised energy resources, such as residential solar panels, home batteries, and even smart appliances. These resources are managed by sophisticated software to operate collectively as a single, larger power plant. In essence, your home battery becomes a small, intelligent contributor to the broader electricity grid.
VPPs play a vital role in Western Australia's unique energy system, particularly the South West Interconnected System (SWIS). With the rapid growth of rooftop solar, the grid faces challenges in managing variable supply and demand. VPPs help address these challenges by:
To be eligible for the WA Residential Battery Scheme, your battery system must be VPP-capable and you must agree to join a VPP product. For Synergy customers this is Synergy's Battery Rewards; Horizon Power customers join Horizon Power's VPP product.
When you enrol in a VPP, you give the VPP operator (your electricity retailer) the ability to remotely manage your battery's charge and discharge cycles during specific periods of grid need. Under Synergy's Battery Rewards that means no more than 30 events a year, usually between 3pm and 9pm on very hot or cold days, paid at 70 cents per kWh exported. Synergy says household use comes first, but you cannot opt out of individual events during the two-year term. See our VPP guide for details.
To further support Perth and WA homeowners in adopting battery storage, the WA Residential Battery Scheme includes an interest-free loan option. This can be a significant financial boost, helping eligible households cover the remaining costs after applying rebates.
The interest-free loan is available to households with a combined annual income under $210,000. If you meet this threshold, you can apply for a no-interest loan of up to $10,000, repaid over up to 10 years. The same VPP and installer conditions apply as for the rebate.
Plenti, the scheme's administrator, manages the loans. While the loan is means-tested, the WA battery rebate itself is not, meaning the rebate is accessible to all eligible homeowners regardless of their income level.
Many Perth homeowners already have rooftop solar systems and are now considering adding a battery to maximise their energy savings and independence. The good news is that both the Federal Cheaper Home Batteries Program and the WA Residential Battery Scheme are designed to support adding a battery to an existing solar PV system, provided it meets the eligibility criteria.
This means you don't necessarily need to overhaul your entire solar setup to benefit from battery storage. An accredited installer can assess your current system, determine its compatibility, and help you choose a battery that integrates seamlessly. Adding a battery counts as an upgrade, so the system must meet the 1 May 2026 connection rules.
The decision to invest in a home battery in Perth in 2026 involves weighing various factors, but with the current rebate landscape and the escalating cost of grid electricity, the financial case is stronger than ever.
Beyond direct financial savings, a home battery offers:
For a home that exports a lot of midday solar and buys a lot of power in the evening, a battery usually pays off, and the 2026 rebates shorten the payback a lot. See Is a Home Battery Worth It in Perth in 2026? for a worked example.
Selecting the right installer for your solar and battery system is paramount to ensuring safety, efficiency, and eligibility for rebates. In Perth, it's crucial to work with reputable, accredited professionals.
When seeking quotes, ask the installer to set out their accreditations, the exact product models, and how the installation meets these standards.
While the availability of solar battery rebates in WA presents a fantastic opportunity, it also attracts less scrupulous operators. Being aware of potential red flags can help you protect your investment and ensure a positive experience.
Here’s what to look out for:
Always get multiple quotes, read reviews from local Perth homeowners, and perform due diligence to ensure you're working with a trusted and accredited solar and battery installer.
Yes. The WA Residential Battery Scheme rebate is in addition to the federal Cheaper Home Batteries discount. For a 10 kWh battery installed in 2026, a Synergy customer gets roughly $3,750 to $4,020 in total. See Can You Combine the Federal and WA Battery Rebates?
Yes, both the Federal Cheaper Home Batteries Program and the WA Residential Battery Scheme support the installation of a new battery system with an existing solar PV system. The rebates are designed to encourage homeowners to add storage to their current solar setup.
A Virtual Power Plant (VPP) is a network of distributed energy resources, like home batteries, that are coordinated to act as a single power plant to support the electricity grid. For the WA Residential Battery Scheme, participation in a VPP product offered by your electricity retailer (Synergy or Horizon Power) is mandatory.
Rebates step down on 1 January 2027: the federal battery STC factor falls from 6.8 to 5.7 per kWh, and again to 5.2 from 1 July 2027. The solar panel rebate also falls by about 20%. The WA Residential Battery Scheme is paid until its 100,000 rebates are used, which the WA Government expects to last into 2027.
Often, installing a new solar and battery system requires an upgrade or modification to your existing electricity meter to correctly measure both imported and exported energy. Your accredited installer will assess your current metering setup and arrange any necessary upgrades with your electricity network provider.
In late 2026, a WA household adding a battery can combine the federal Cheaper Home Batteries discount (6.8 STCs per usable kWh, tapered above 14 kWh) with the WA Residential Battery Scheme rebate (up to $1,300 for Synergy customers, $3,800 for Horizon Power customers), and eligible households can add a no-interest loan of up to $10,000. The WA rebate requires joining your retailer's VPP.
With midday exports paying 2 cents and grid power costing about 33 cents, storing your own solar is where the savings are.
Timing matters. Rebates step down on 1 January 2027, and the WA scheme ends when its 100,000 rebates are used.
Sun Direct Power is an approved Plenti vendor and takes both rebates off the quote. Compare our packages below.
Disclaimer: This article provides general information only as of October 2026 and should not be considered financial or professional advice. Rebate amounts, eligibility criteria, and scheme terms can change. While every effort has been made to ensure accuracy based on available public information, specific figures for rebates, feed-in tariffs, or system costs are estimates and subject to market fluctuations and government policy changes.
Readers are strongly advised to seek current, personalised advice from accredited solar and battery installers and consult official government and energy retailer websites (e.g., dcceew.gov.au, cer.gov.au, wa.gov.au, synergy.net.au, horizonpower.com.au, westernpower.com.au) for the most up-to-date and accurate information before making any investment decisions. Solar and battery system performance and savings estimates are illustrative and will vary based on individual circumstances, energy consumption patterns, and system design.
Sun Direct Power installs solar and batteries across Perth and WA, and we are an approved Plenti vendor for the WA Residential Battery Scheme. On every package the rebates are taken off the quote, not paid back later:
Systems start from $7,114 after rebates. See all our packages or get a fixed quote for your home.
Facts checked 27 October 2026.
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