Check your roof’s condition, orientation, shading and available space, then compare your household’s daytime electricity use with the system sizes recommended. Ask several licensed installers for itemised quotes covering panels, inverter, installation, warranties, monitoring and any ongoing costs. The final price and any eligible small-scale technology certificate discount can vary by system, location and provider, so confirm the details before signing. You can also check current guidance on energy.gov.au and seek independent advice if you are unsure.