STC Calculator: Calculate your rebate

Your solar rebate results

No. of STCs N/A Current STC Price N/A

Solar rebate N/A

Get quotes for this system and claim your rebate

3 free quotes from top installers. No obligation.

Our STC calculator will tell you how much you can save off the value of a solar panel system. Simply enter your postcode and the system size you are considering buying and our calculator will do the rest.

Your government solar rebate varies depending on your system size and your installation location. Calculate your solar panel rebate using our STC calculator below.

Your rebate comes in STCs

The solar panel rebate, or financial incentive (correct government term), is issued in the form of Small- scale Technology Certificates, commonly referred to as STCs.

Location and system size

When you purchase a solar system, you’ll receive a certain number of STCs according to the size of your solar system, your location and how many years the system will generate solar output up until the end of 2030. Each STC carries a monetary value. The STC rebate is calculated by multiplying the number of certificates for any given system by the current STC price.

The STC price

The STC price fluctuates daily, as the certificates are traded on an open market where supply and demand impacts the price. The current STC price is approximately $40.

In 2025, the average STC price was $40, with the Clean Energy Regulator reporting an average clearing price of $39.90 ¹ in the first quarter of 2025.

It is the number of certificates that decreases each calendar year and not the STC price.

Source:
¹ Clean Energy Regulator STC report

Helpful links