Compare several written quotes from local installers, checking that the installer is accredited by the Clean Energy Council and can explain the system’s expected output for your roof. A good quote should itemise panels, inverter, mounting, electrical work, switchboard upgrades, monitoring, warranties and any likely extra costs. Confirm who will manage the grid-connection requirements with TasNetworks, and check the installer’s licence, insurance, reviews and after-sales support. You can use the CEC’s installer directory and ask an installer or TasNetworks about site-specific requirements before signing.