The STC rebate is an upfront discount linked to Small-scale Technology Certificates created when an eligible solar system is installed. The value depends on factors such as the system’s size, location, installation date and remaining deeming period, and STC prices can change. In many cases, an installer or retailer handles the certificates and reflects their estimated value in the quoted price, but the discount is not guaranteed until eligibility is confirmed. Check the proposal carefully and confirm the details with your installer or on the Australian Government’s energy.gov.au website.