Homeowners may be eligible for the federal Small-scale Renewable Energy Scheme, where an approved solar installer usually applies eligible Small-scale Technology Certificates (STCs) as an upfront discount on a system. The value depends on factors such as the system size, location, installation date and remaining deeming period, and is not a guaranteed cash payment. Some states and territories also offer separate rebates, interest-free loans or battery incentives with their own rules and application processes. Check the current details at energy.gov.au and with an accredited installer before signing a contract.