15kWh home battery
just past the first rebate tier
Residential
Solar Panels & Battery Storage for Australian Homes
Generate your own power by day, store it for the evening peak, and stop paying top rates when the sun goes down. We size, supply, install and support, and we handle your battery rebate.
01
Own Your Power, Day and Night
Add a battery and you keep it, running your home through the 4 to 9pm peak on energy you already generated. That is where the real savings sit.
The catch is sizing. Too small and you still buy peak power. Too big and you pay for storage you never fill. We work from your bills, not from a sales target.
02
Solar Alone or Solar With a Battery?
Many homes start with a battery-ready inverter and add the battery later. Tell us in the quote form if you already own solar and we will check what you have.
| Solar only | Solar with battery | |
|---|---|---|
| Daytime use | Runs on your panels | Runs on your panels |
| Surplus midday power | Exported for a low feed-in rate | Stored for the evening |
| Evening and overnight | Bought from the grid at peak rates | Largely covered by the battery |
| Outages | Panels switch off with the grid | Selected circuits can stay on, if configured |
03
Battery Rebate: What You Can Claim
The federal Cheaper Home Batteries Program gives you an upfront discount on an eligible battery, delivered through small-scale technology certificates (STCs). Your installer claims them, so you do not apply separately.
Since 1 May 2026 the discount is tiered. The first 14kWh of usable capacity earns the full rate, the next 14kWh earns 60 percent of it, and capacity from 28kWh to 50kWh earns 15 percent. The rate, called the STC factor, is 6.8 for installs from May to December 2026 and drops to 5.7 on 1 January 2027. The date of installation decides which applies.
Check the rules on the Clean Energy Regulator battery page and the Department's program page. Our rebates and incentives guide explains how it stacks with state schemes.
04
Choose Your Solar and Battery Package
Our packages start at smaller homes and scale up.
Want to compare all three side by side? Start at the solar and battery packages overview.
| Package | Suits | Page |
|---|---|---|
| 6.6kW with a battery | 2 to 4 people, standard routine | 6.6kW solar and battery package |
| 10kW with a battery | Larger homes, one EV | 10kW solar and battery package |
| 13kW with a battery | Big homes, pool, two EVs | 13kW solar and battery package |
05
Choose Your Battery Size
Most homes need a battery of 14kWh or less, and we size that from your bills at the assessment. Where the rebate tiers change the maths is above 14kWh, so we wrote a guide for the bigger sizes.
20kWh home battery
large homes and EV households
30kWh battery
big properties and small business
40kWh battery and 50kWh battery
farms and commercial sites
The large home battery size guide compares them all.
06
Backup Power: What to Expect
A battery does not automatically keep the whole house running in a blackout. What stays on depends on three things: the battery capacity, which sets how long backed-up circuits run; the inverter output, which sets how much can run at once; and the switchboard configuration, which sets which circuits are connected to backup at all.
We design backup for selected circuits, such as the fridge, lights, internet and a few power points, and confirm the achievable scope for your home at the assessment. Tell us what you need to keep running.
Equipment
Premium Panels, Inverters and Batteries We Install
Panels, inverters and batteries from manufacturers with people on the ground in Australia, because a long warranty is only as good as the company left to honour it.
Solar Panels
Tier-one panels with long product and performance warranties.
Inverters
String and hybrid inverters with Australian support teams.
Batteries
Home and commercial storage, battery-ready where it makes sense.
Brand availability depends on your system design and location. We confirm the selected equipment and manufacturer warranty in your written quote.
07
The Frostac Install Process
- Free assessment. Roof, switchboard, network and bills.
- Tailored plan and quote. A clear written quote with rebates applied*.
- Accredited install. Panels, inverter, battery and the paperwork.
- Monitoring and support. An app to see it working, and one team to call. See energy monitoring.
Important Information
* Rebate details, output figures and timeframes shown are indicative estimates based on stated assumptions, not an offer, quote or guarantee. Your outcome depends on your site, roof, switchboard, network, products and the date of installation, and your written quote prevails. Savings and payback are not guaranteed. See clauses 24.1 to 24.5 of the Terms and Conditions.
Compare
Compare the Options
Solar and Battery Packages for Australian Homes
Compare 6.6kW, 10kW and 13kW solar and battery packages. See what is included and which size suits your home.
Large Home Battery Sizes: 15kWh to 50kWh
Compare 15, 20, 30, 40 and 50kWh home batteries: how the tiered rebate works, what each size suits and which one fits your bills.
Questions
Common Questions
01Is a Solar Battery Worth It in Australia?
It can be, if you use a lot of power after dark and your feed-in rate is low. A battery turns cheap midday solar into evening power. We work out whether it pays for your home from your bills and write the assumptions down.
02How Big a Solar System Do I Need?
Start with your daily kWh use on your bill, your roof space and whether you have or plan an EV. As a guide, 6.6kW suits most 2 to 4 person homes, 10kW suits larger households and 13kW suits big homes with heavy loads.
03How Much Is the Battery Rebate?
It depends on the battery size and the date of installation.
04How Long Does Installation Take?
[1 to 2 days on site for most homes, plus network approval time.].
05What Warranties Come With My System?
Panels, inverters and batteries carry the manufacturer's product and performance warranties, and Frostac provides a workmanship warranty.
06Will the Battery Run My Whole House in a Blackout?
Not by default. Backup covers the circuits we connect to it, and the inverter output limits how much runs at once. We confirm the scope at the assessment.