The Small-scale Technology Certificate (STC) scheme can reduce the upfront price of an eligible solar system in 2026, but it is not a fixed rebate. The number of STCs depends on the system’s capacity, location and installation date; the 2026 deeming period is scheduled to be seven years, and certificate prices can change with the market. Most installers assign the STCs on your behalf and include their estimated value as an upfront discount. Check the current rules on energy.gov.au and ask an accredited installer for a tailored estimate, as eligibility and the final discount are not guaranteed.