For a typical Australian home, solar panel costs depend on the system size, panel and inverter quality, roof access, installation complexity and whether you add a battery. Government incentives such as small-scale technology certificates may reduce the upfront price for eligible systems, but the value depends on factors including location, system size and current rules. Ask several accredited installers for itemised, GST-inclusive quotes covering installation, warranties and any ongoing costs. You can also check current incentive information on energy.gov.au before making a decision.