Small-scale technology certificates (STCs) are an Australian Government incentive under the Small-scale Renewable Energy Scheme (SRES). For an eligible solar system, STCs are usually assigned to the installer and their value is passed on as an upfront discount, rather than paid directly to the homeowner. The number of certificates depends on factors such as the system’s size, location and installation date, while their market value can change. Ask an accredited installer to show the STC discount separately on your quote, and check current scheme details on energy.gov.au.