Check whether your system and installer are eligible for the federal Small-scale Renewable Energy Scheme before signing a contract, as the rules and certificate value can change. Compare quotes carefully to see whether the advertised price already includes the estimated value of Small-scale Technology Certificates (STCs), and ask who will create and assign them. Use an installer accredited under the relevant scheme and keep copies of the quote, product details and installation documents. Your final eligibility and rebate outcome depend on the scheme rules and your circumstances, so confirm details through the Clean Energy Regulator or energy.gov.au.