Solar panel costs in Australia vary with the system size, panel and inverter quality, roof access, installation requirements and your location. The advertised price may include an upfront discount linked to Small-scale Technology Certificates (STCs), but eligibility and the value of any incentive can change. Battery storage, switchboard upgrades and other electrical work can add to the total. Compare detailed quotes from accredited installers and check current information through energy.gov.au before deciding.