Search for an installer in your area through the Solar Accreditation Australia directory, and check that the business and its electricians hold the appropriate accreditation and licences. Ask for itemised quotes showing the system price, any STC discount, installation work, warranties and expected completion dates. STCs generally reduce the upfront price when an eligible installer manages the certificates, but eligibility and the discount depend on the system, location and market conditions. Compare several written quotes and verify the proposed system meets current requirements through the Clean Energy Regulator or energy.gov.au before signing.