Search for local installers listed by the Clean Energy Council and check that the business uses appropriately accredited solar professionals. Obtain at least two or three written quotes covering panel and inverter brands, system size, installation work, warranties, monitoring and grid-connection requirements. Ask for recent local references and confirm who will handle permits, paperwork and any problems after installation. Your final system design, costs and eligibility for available incentives depend on your property and circumstances, so compare the quotes carefully and check current information on energy.gov.au before signing.