The national Small-scale Renewable Energy Scheme (SRES) provides a financial incentive for individuals and businesses to install small-scale renewable energy systems such as rooftop solar. It does this through the creation of small-scale technology certificates (STCs), which are issued upfront for a system’s installed module capacity (based on its installation date and geographical location) until the SRES expires in 2030. Homeowners who purchase an eligible system can assign them to an agent, usually the system installer, in exchange for a discount.
The price of STCs changes according to market conditions. The total level of subsidy you receive will depend on several factors, including the location and size of the solar system and the price of STCs at the time the system was installed.
More comprehensive information about how STCs are calculated and what you can expect in return can be found on the Clean Energy Regulator’s page.