How much will a battery really save you?
Updated 6 November 2026
Put in how much power you use and we'll show the saving and payback for every battery size, side by side. Most calculators leave out Victoria's free midday power hours and your electric car. Ours counts both.
Example: a home using 20 kWh a day
With 6.6 kW of solar and a 13.5 kWh battery, the battery saves about $1,089 a year and pays back in about 9 years (price after the federal rebate about $9,791). With no solar at all but on a Midday Power Saver plan, the same battery can fill up free from 11am to 2pm and saves about $1,508 a year – about 6.5 years.
What we install
- Home batteriesSized to your usage, rebate taken off the quote
- Solar panelsNew systems and upgrades
- Tesla & EV chargersWall Connector and other 7 kW chargers
- Split system air conSupply and install, reverse cycle
- Heat pump hot waterGas to electric, rebate up to $1,400
Every installation is done by a licensed, registered electrical contractor, with a Certificate of Electrical Safety.
Questions people ask
How long does a home battery take to pay back in Melbourne?
For a typical home using 20 kWh a day with 6.6 kW of solar, a 13.5 kWh battery pays back in about 9 years at November 2026 prices and rebates. Homes that use more at night, charge an electric car or use the free midday hours pay back faster; homes that use most power in the daytime pay back slower.
Is the battery rebate still available?
Yes. Under the Cheaper Home Batteries Program the discount from May to December 2026 is about $251.60 per kWh for the first 14 kWh, 60% of that for 14–28 kWh and 15% for 28–50 kWh. The next scheduled reduction is 1 January 2027.