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Free tool

Battery rebate calculator

Estimate the federal Cheaper Home Batteries Program discount for your battery’s size and installation date, and see what you’d lose if installation slips into the next period.

kWh

On the quote or datasheet as “usable capacity”. It’s a little less than the nominal size.

The installation date sets the discount, not the date you sign.

$35

Retailers set this. The government clearing house pays at most $40 excluding GST; open-market prices are usually a little lower.

Estimated discount

$3,220

about 92 certificates at $35 each, installed may to December 2026

How the certificates add up
CapacitykWhPer kWhCertificates
First 14 kWh13.56.891.8
14 to 28 kWh04.080
28 to 50 kWh01.020

Installed january to June 2027 instead, the same battery would earn about 77 certificates: $525 less.

An estimate from the Clean Energy Regulator’s published rules, rounded to whole certificates. For the exact figure for a specific battery, use the Clean Energy Regulator’s calculator. To qualify, the battery must be on the Clean Energy Council’s approved list and installed with solar by an accredited installer with a battery endorsement. Our guide to the battery discount explains every rule.

Questions

Is the battery rebate paid to me?
No. The discount comes from small-scale technology certificates (STCs). You assign them to your retailer, who takes their value off your price, so it shows on the quote.
Why is my quote’s discount different?
Retailers pay different prices for certificates, and your battery’s exact usable capacity may differ from the size in the name. Ask the retailer how many certificates and what price per certificate the discount is based on.
Does the discount get smaller?
Yes. The number of certificates per kWh steps down every six months until the end of 2030. The installation date counts, not the date you sign.