As a broad guide, a typical Australian home solar system may cost about $4,000–$12,000 installed after any eligible Small-scale Technology Certificate (STC) discount. The final price depends on system size, panel and inverter quality, roof access, switchboard work, local installation costs and whether a battery is included. STC eligibility and the discount applied can vary, so the amount is not guaranteed. Compare several itemised quotes from accredited installers and check current incentive information on energy.gov.au.