Australia’s new Federal Battery Rebate—paying $370 per usable kilowatt-hour—is a game changer for homeowners looking to add solar storage. But here’s the truth many installers won’t say clearly: bigger batteries offer significantly better value under this scheme.
Let’s break it down.
💰 The Bigger the Battery, the Bigger the Rebate
Unlike most rebates, this one isn’t a flat dollar amount. It scales with the usable capacity of your battery.
For example:
- A 9.6 kWh battery earns you $3,552
- A 13.5 kWh battery earns $4,995
- A 16 kWh battery earns $5,920
The more storage you install, the more rebate dollars you receive — simple.
⚖️ Fixed Costs Stay the Same — So Bigger Means Better Value
This is where the real financial advantage kicks in.
Many of the installation costs are fixed, no matter what size battery you choose:
- Electrician labour
- Cabling and switchboard integration
- Gateway/controller (e.g. Tesla Backup Gateway or Franklin FHP)
- Travel and compliance documentation
- Commissioning and admin
- STC registration and rebate paperwork
These don’t increase proportionally with battery size — so when you opt for a larger battery, you’re spreading those fixed costs over more usable storage.
In other words:
✅ The rebate goes up as the battery gets bigger
✅ But your install costs stay the same
✅ So the net cost per kWh drops — giving you a better return
🔋 More Storage = More Flexibility & Backup
With a larger battery, you get more:
- Stored solar to use overnight
- Protection from blackouts and price spikes
- Control over your grid usage
- Value from spot market or peak avoidance strategies
Smaller batteries often “fill up” by midday and sit idle. Larger batteries work harder, longer.
🔧 Future-Proof Your Energy Needs
Your electricity use will likely grow — with EVs, electric heating, and smart appliances becoming more common. A larger battery now avoids expensive upgrades later.
And remember: the rebate is only available once per property — so it pays to go big the first time.
✅ Take Action Now
The rebate window is open — but stock is limited and demand is already surging. We’re encouraging all customers to:
- Book a consultation to size your battery properly
- Lock in your rebate eligibility with a 50% deposit
- **Install before demand pushes prices up
💬 Ready to Talk?
📞 1800 82 66 76
📧 sales@marshallsolarandenergy.com.au
🌐 marshallsolarandenergy.com.au
Let us help you claim your rebate and future-proof your home with the battery size that gives you the most bang for your buck.
