A battery changes what solar can do for your home. Instead of only saving money while the sun is up, you store the extra daytime power and use it at night, when your grid electricity would otherwise cost the most.
How to choose the right battery size
Battery capacity is measured in kWh, and the right size depends on your evening usage, not just your solar system size. A household that mostly uses power during the day needs less storage than one running the dishwasher, heating and TVs from 6pm onward. Common options for Victorian homes include:
- 5kWh, essential circuit backup for smaller households
- 10kWh, covers most nightly usage for a typical family
- 13.5kWh, full home backup capability
- 20kWh, multi-day autonomy for larger households
See the full breakdown on our Battery Program page.
Quick Tip
Households with high evening usage and a large existing solar system tend to see the fastest battery payback, since they replace the most expensive grid power with power they already generated for free.
Rebates make batteries far more affordable
Battery specific rebates have significantly lowered the upfront cost of home storage in Victoria, and in many cases these can be combined with your solar rebate if you’re installing both together. Check current eligibility on our Victoria Solar Rebate page.
What actually determines payback time
Payback depends on three things: how much you currently pay for grid power at night, how much unused solar you’re currently exporting for a low feed-in rate, and the rebate you qualify for.
CEC-approved batteries only
Not every battery on the market qualifies for rebates or carries a reliable warranty. Sticking to CEC-approved batteries protects your rebate eligibility and ensures the unit has passed Australian safety and performance testing.
Battery installs across Melbourne’s East
We install home batteries across Melbourne’s East and surrounding growth suburbs including Berwick, Cranbourne, and Officer.
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