Small-scale technology certificates (STCs) are part of Australia’s Small-scale Renewable Energy Scheme and are commonly described as the solar rebate. For an eligible solar system, STCs have a market value that usually reduces the upfront price when you assign them to your installer or retailer, rather than being paid directly to you as cash. The value depends on factors including the system’s size, location, installation date, and the certificate market price, so it can change. Ask your installer how the STC value is included in their quote and check current guidance at energy.gov.au.