Home batteries, worked out properly.
Free, independent calculators for Australians weighing up a home battery. See your real federal and state rebate, whether it pays back on your bill, and the size you actually need.
- Free
- No sign-up
- No installer owns us
Every figure links to the CER, DCCEEW or the state program page.
No installer or retailer owns us. Commissions never change a result.
Each calculator shows the day we last checked its rules.
See the exact sum behind every number, not just the answer.
The calculators
Three questions. Three honest answers.
Start with the rebate, then check the payback and the size. Each tool shows its working.
Battery rebate calculator
Your federal Cheaper Home Batteries discount plus state extras, using the current STC rules.
Is a battery worth it?
Payback from your own bill, tariffs and quote.
What size do I need?
Size to your evening use, not your daily total, and avoid paying for capacity the rebate barely covers.
Heads up · 1 January 2027
The federal discount drops 16% on New Year’s Day.
We’ll send one short email when the rules change. No newsletters, no installer spam.
Signup coming soon: this is a placeholder and nothing is collected yet. Privacy policy.
The guides
