Solar STC Calculator
Estimate the number of Small-scale Technology Certificates your solar system will earn and the approximate rebate value.
kW
The total panel capacity (kW peak). Common sizes: 6.6kW, 10kW, 13.2kW.
$
Current market price is approximately $36–$40 per STC. Your installer negotiates this.
What are STCs?
Small-scale Technology Certificates (STCs) are a form of government subsidy under Australia's Renewable Energy Target (RET) scheme. When you install an eligible solar PV system, you earn a set number of STCs based on:
Useful extras for tracking energy savings
These help you keep tabs on usage, cable mess and the small stuff around home charging. SmartKoala may earn from qualifying purchases.
- System size (kW) — larger systems earn more STCs
- Zone rating — areas with more sun earn more STCs (NT > QLD > NSW/VIC > TAS)
- Deeming period — how many years until the scheme ends in 2031 (decreases each year)
STCs are typically assigned upfront to your installer, who then passes the value on to you as a point-of-sale discount on your installation cost.
The STC scheme ends in 2031. Each year, the deeming period (and therefore the number of STCs) reduces by 1 year. Installing sooner earns more STCs.