Fast Read
A fully installed Enphase solar battery system in Australia typically costs between $10,000 and $22,000, depending on the model and capacity. A single Enphase IQ Battery 5P (5kWh) generally ranges from $10,000 to $13,000, while a 10kWh system using two 5P batteries can cost between $16,000 and $22,000. These prices are before applying the Australian Government's Cheaper Home Batteries Program, which launched on 1 July 2025 and can reduce the upfront cost by around 30% or roughly $3,400 for a 10kWh system.
Enphase solar battery installed price
[–IMAGE_1_PLACEHOLDER–] The installed price of an Enphase solar battery in Australia is a premium investment, reflecting its advanced technology and robust warranty. For a complete system, you can generally expect to pay between $10,000 for a small setup to over $22,000 for a larger capacity system.
The final enphase battery price depends heavily on the system size you need and whether you are installing it with a new solar panel system or retrofitting it to an existing one. Remember, these initial figures don’t include the significant savings available through new government rebates.
Enphase IQ Battery 5P installed cost
The Enphase IQ Battery 5P is the company’s latest modular battery, offering 5kWh of usable storage capacity. A single, fully installed IQ Battery 5P generally costs between $10,000 and $13,000 in Australia.
This price typically includes:
-
The 5kWh battery unit itself.
-
The essential Enphase IQ System Controller, which enables backup power during a grid outage.
-
Standard installation by a Solar Accreditation Australia (SAA) accredited electrician.
Because the system is modular, you can start with one 5P and add another later. A second unit is usually more affordable to install as the critical IQ Controller is already in place.
| System Size (Capacity) | Estimated Installed Price (Before Rebate) |
|---|---|
| 1 x IQ Battery 5P (5kWh) | $10,000 – $13,000 |
| 2 x IQ Battery 5P (10kWh) | $16,000 – $22,000 |
Gigi’s Pro Tip: When getting quotes for an Enphase battery, always ensure the price includes the IQ System Controller. Without it, you won’t get blackout protection, which is a key benefit of a premium battery system. Some low-cost quotes leave this essential component out.
Enphase IQ Battery 10T installed cost
The Enphase IQ Battery 10T is the previous generation model, consisting of three smaller 3.36kWh battery modules bundled together to provide a total usable capacity of 10.08kWh. While it has largely been succeeded by the more powerful and compact 5P model, some installers may still offer it.
The fully installed price for an Enphase IQ Battery 10T in Australia typically ranges from $15,000 to $20,000. Just like the 5P, this cost is before any government rebates are applied. Given the performance benefits and superior 15-year warranty of the newer 5P model, I generally recommend it over the 10T unless you are offered a significant discount on the older stock.
Cost of Enphase Encharge 10 vs Encharge 3
The “Encharge” branding was used for Enphase’s earlier generation batteries, which have now been rebranded and upgraded to the IQ Battery series (like the 10T and 5P). The Encharge 10 (10.08kWh) was simply a bundle of three Encharge 3 (3.36kWh) units.
While you’re unlikely to find new stock of these specific models in Australia, understanding their pricing helps put the current models in context. The previous generation Encharge 10 systems often retailed for between $18,000 and $20,000 fully installed. The modular approach remains a core part of Enphase’s strategy, but the technology inside the IQ Battery 5P is a significant step up in terms of power output and warranty.
Factors affecting solar battery installation cost
[–IMAGE_2_PLACEHOLDER–] The sticker price of the battery unit is only one part of the final cost. From my analysis of dozens of system quotes, several key factors will influence your total enphase battery installation cost:
-
Battery Capacity: The larger the storage capacity (measured in kWh), the higher the upfront cost. However, larger systems often have a lower cost per kWh, offering better long-term value.
-
System Components: A complete Enphase system requires the IQ System Controller for backup power, which can cost between $2,200 and $3,100 on its own. This is a major reason why an advertised “battery only” price is often misleadingly low.
-
Installation Complexity: Every home is different. Costs can increase if your switchboard needs upgrading to meet current standards, if wiring runs are complex, or if the installation location is difficult to access.
-
Retrofit vs. New Install: Installing a battery at the same time as your solar panels is almost always cheaper. Adding a battery to an existing system (a retrofit) requires additional labour and potentially swapping out components, adding to the cost.
-
Location: Labour and transport costs can be higher in regional or remote areas compared to major cities.
Average labour cost to install Enphase battery
The labour component for a solar battery installation in Australia typically ranges from $1,500 to $3,500. This portion of the total cost covers the time and expertise of the SAA-accredited installer and their team.
The cost can be at the lower end of this scale if the battery is being installed with a new solar PV system. It may be at the higher end for a retrofit, especially if it requires significant electrical work or a switchboard upgrade to ensure the entire system is safe and compliant with Australian standards.
Case Study: A Family in Brisbane The Sharma family was tired of their quarterly electricity bills creeping over $700. They decided to add an Enphase IQ Battery system (10kWh) to their existing 6.6kW solar setup. The total installed cost was $18,500. After applying the new federal battery rebate, their out-of-pocket cost was reduced to approximately $15,100. Their annual savings on electricity bills are now projected to be over $2,400, giving them a clear payback period of just over 6 years and protecting them from evening peak electricity rates.
Enphase solar battery rebates and incentives 2025
This is where the story gets really exciting for homeowners. As of 1 July 2025, the Australian Government’s Cheaper Home Batteries Program is officially active.
This federal scheme provides a significant upfront discount of around 30% on the cost of a new battery installation. The rebate is calculated based on the battery’s usable capacity, offering approximately $335-$372 per kWh. For a 10kWh Enphase system, this translates to a saving of around $3,400.
This national program is delivered through the Small-scale Renewable Energy Scheme (SRES) and is applied at the point of sale by your installer, so you don’t have to claim it back later.
Some states may also offer their own incentives that can be combined with the federal rebate, so it’s crucial to check what’s available in your specific area.
Federal tax credit for solar batteries 2025
In Australia, the primary financial incentive for solar batteries is an upfront rebate or discount, not a tax credit that you claim back on your tax return.
The Cheaper Home Batteries Program, which is fully funded by the Australian Government, reduces the initial purchase price of the battery system. This is managed through Small-scale Technology Certificates (STCs), similar to the long-standing incentive for solar panels. This structure makes the savings more immediate and accessible for all eligible households, small businesses, and community facilities, as you don’t need a certain level of taxable income to benefit.
Making a decision on a home battery is a big step, but the financial case has never been stronger. With significant government support now available, the Enphase battery price is more accessible than ever before.
If you’re feeling overwhelmed by the options, I can help. I can connect you with a trusted local expert who can provide a clear, tailored quote for your home. Just fill out the form below to get started.