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Battery Size Calculator
Find the right battery size for your home based on usage patterns and solar system.
Your Details
20c/kWh50c/kWh
Our Recommendation
13.5kWh
Battery
$10,500
After rebate
8-12 hours
Backup duration
Estimated Savings
Evening/Night Usage11.3 kWh
Daily Excess Solar16.0 kWh
Battery Utilisation100%
Annual Savings$1,478
Payback Period7.1 years
All Battery Options
5kWh
3-4 hours backup
$4,500
$6,500
10kWh
6-8 hours backup
$8,500
$12,000
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13.5kWh
8-12 hours backup
$10,500
$15,000
20kWh
12-16 hours backup
$16,000
$22,000
Note: These estimates are indicative only. Battery savings depend on your specific usage patterns, time-of-use tariffs, and installation specifics.
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