Compare quotes on a like-for-like basis, including panel and inverter brands, system size, estimated output, warranties and what installation work is included. Check the installer’s electrical licence, relevant accreditation for the incentive scheme, ABN, insurance and independent customer reviews. Ask whether the price covers scaffolding, switchboard upgrades, monitoring, grid-connection paperwork and removal of old equipment. Read the contract carefully, including deposits, timelines, workmanship warranties and who manages equipment warranty claims. Your final choice should reflect your home’s design and energy needs, so an independent electrician or the relevant network may help confirm technical requirements.