The federal battery discount steps down on 1 January 2027. Installs commissioned before then get the current rate. Get my battery quote
Add a Battery to Your Existing Solar System
Already have solar panels? Our technicians check your existing inverter and switchboard, then add a compatible battery of up to 30kWh – including on systems installed by other companies. The federal battery discount is applied on your quote.
- Inverter compatibility checked before you commit
- Batteries up to 30kWh from FoxESS, GoodWe, Sungrow and more
- Federal discount applied – steps down 1 January 2027
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A battery specialist will call you shortly. Need us sooner? Call 1300 475 830.
Battery retrofits at a glance
The key facts, with links to the detail below.
- Who it’s for
- Homes with existing solar that export most of their daytime power
- Battery sizes
- Up to 30kWh – compare sizes
- Compatibility
- Hybrid inverters can often connect directly; others get a battery inverter
- Other installers
- Yes – we add batteries to systems installed by others (assessment fee may apply)
- Rebate
- Federal Cheaper Home Batteries discount, roughly 30%
- Install time
- Within 3 weeks of signing in Melbourne, 4 weeks regional
Will a battery work with my existing solar?
Usually, yes. What we need depends on your current inverter. Tell us the brand in the form above, or send a photo of the inverter label, and we’ll confirm before quoting.
- Battery-ready hybrid inverterThe battery can often connect directly to your existing inverter, which keeps the cost down.
- Standard solar inverterWe add the battery with its own hybrid or battery inverter. Your existing panels keep working as they do now.
- Older or faulty systemWe may recommend replacing the inverter first so the whole system works effectively.
Why add a battery?
Without a battery, most of the solar you make while you’re out goes back to the grid for a small feed-in credit.
Use your solar at night
Run lights, cooking, TV and heating or cooling after sunset on power your panels made that day.
Lower power bills
Buy less electricity at evening peak rates and make the most of every kilowatt your solar produces.
Backup in a blackout
With a backup-ready setup, a battery can keep selected circuits or the whole home running during an outage.
Batteries we add to existing solar
FoxESS Preferred
Our first choice for home batteries, with modular sizes that scale up to large-capacity storage.
FoxESS batteries
GoodWe Preferred
Batteries and hybrid inverters from one maker, monitored in one app.
GoodWe batteries
Sungrow
Modular batteries designed to work with Sungrow hybrid inverters.
Sungrow batteries
Sigenergy
Stackable all-in-one energy storage for homes wanting a premium setup.
Sigenergy batteriesBattery rebates and finance
We apply every discount you qualify for directly on your quote.
Federal battery discount
Applied at the point of sale through the Cheaper Home Batteries Program. Not means tested. Steps down on 1 January 2027.
Battery discount explainedFinance
Spread the cost with Brighte payment plans, or use the Solar Victoria interest-free loan for solar panels if you’re eligible.
Finance optionsRebate information checked October 2026. Amounts and eligibility can change – your quote confirms the current figures.
Battery installers near you
We add batteries to existing solar across Melbourne and regional Victoria.
Melbourne regions
Battery retrofit FAQs
Can I add a battery to any solar system?
Most systems can take a battery. If your inverter is a battery-ready hybrid, the battery can often connect directly. If not, we add a battery with its own inverter. Very old or faulty systems may need an inverter replacement first.
Do you add batteries to systems installed by other companies?
Yes. Our technicians assess systems from other installers, check compatibility and quote a battery that suits what you have. A site assessment fee may apply.
What size battery should I add?
Size it to the power you use after the sun goes down. Many homes suit 10kWh to 14kWh, larger families 20kWh to 30kWh. We size it from your bill and usage data.
Is the federal battery discount available for retrofits?
Yes. The Cheaper Home Batteries Program applies to eligible batteries added to existing solar. It is not means tested, and steps down on 1 January 2027.
Find out what a battery costs for your system
Tell us your inverter brand and we’ll confirm compatibility and send an itemised quote with the discount applied.