The Cheaper Home Batteries program delivers a federal discount as Small-scale Technology Certificates (STCs). See the indicative discount your accredited installer should apply — sized from your usable capacity and the Clean Energy Regulator's deeming factor — and an indicative simple-payback range. The STC price floats, so dollar figures are indicative, not a quote.
Educational tool. Not financial advice.
When is (or was) the battery installed?
The federal deeming factor steps down twice a year, so the install date sets the schedule. From 1 May 2026 it is 6.8 STCs per usable kWh (down from 8.4).
Usable battery capacity (kWh)
The usable capacity the rebate is sized on — typically a little below the nameplate (nominal) figure. The program covers from 5 kWh usable.
$
Does the install meet the program's core eligibility?
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Yes — a single job with new or existing rooftop solar, a CER-approved product, and (if on-grid) VPP-capable. Your installer confirms eligibility.
Optional — add an install cost and a low/high annual bill saving to see an indicative simple-payback RANGE. The saving range is yours to estimate; we only do the arithmetic and surface the assumptions.
Total installed cost before the federal discount (optional)
The installer's price for the battery and installation, before the federal STC discount is applied.
$
Annual bill saving — low estimate (optional)
Your conservative estimate of the yearly bill saving (self-consumption shifted off-peak, avoided peak import, less any feed-in-tariff change).