Your solar rebate, by postcode.
Estimate your 2026 STC solar rebate and federal battery rebate using official Clean Energy Regulator zone ratings. Accurate, sourced and updated.
The STC rebate shrinks each year as the scheme winds down to 2030. Lock in sooner for more.
Enter a valid Australian postcode to see your STC and battery rebates.
Estimate only — not a quote. Figures verified 2026-06-22. Sources: Clean Energy Regulator (STC), DCCEEW (Cheaper Home Batteries). Final value confirmed at installation.
How the solar rebate works
Australia's main solar incentive is the federal STC scheme. When you install a system, it earns Small-scale Technology Certificates based on three things: how big the system is, how much sun your postcode gets, and how many years are left in the scheme. Your installer typically redeems those certificates and passes the value back as an upfront discount.
System size & zone
Bigger systems in sunnier zones create more certificates.
Deeming period
Years until the scheme ends in 2030 — it shrinks annually.
Battery on top
The Cheaper Home Batteries Program adds a separate rebate per usable kWh.
Frequently asked questions
What is the solar STC rebate?
Small-scale Technology Certificates (STCs) are the federal government's main solar rebate. Your system is awarded a number of certificates based on its size, your postcode's solar zone, and how many years remain in the scheme. Installers usually apply the value as an upfront discount.
How is my STC rebate calculated?
STCs = system size (kW) × your postcode zone rating × the deeming period (years until the scheme ends in 2030), rounded down. That number is multiplied by the STC market price (around $38 after fees) to give your rebate.
What are postcode solar zones?
The Clean Energy Regulator divides Australia into four zones by solar radiation. Zone 1 (highest sun, rating 1.622) creates the most certificates; Zone 4 (rating 1.185) the fewest. Sydney, Brisbane, Perth and Adelaide are Zone 3; Melbourne and Tasmania are Zone 4.
Does the rebate get smaller each year?
Yes. The deeming period drops by one year every January because the scheme is legislated to end on 31 December 2030. Installing sooner means more certificates and a larger rebate.
How much is the federal battery rebate?
Under the Cheaper Home Batteries Program (tiered from 1 May 2026), batteries earn roughly $252 per usable kWh for the first 14 kWh, 60% of that from 14–28 kWh, and 15% from 28–50 kWh. Capacity above 50 kWh receives no extra support.
Are these figures accurate?
We use the official CER postcode zone table and the published Cheaper Home Batteries rates, date-stamped on the calculator. Results are estimates, not quotes — the STC price moves with the market and state schemes change, so your final figure is confirmed at installation.
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