A solar installer assesses your home, recommends a suitable system, installs the panels, inverter and wiring, and arranges required electrical and grid connection work. In Australia, check that the installer and electricians hold the relevant licences and that the system components meet applicable standards. Ask for a written quote covering equipment, installation, warranties, monitoring, approvals and any ongoing costs. Compare several quotes, verify reviews and accreditation, and confirm details with your electricity distributor or a licensed professional if anything is unclear.