Check that the installer holds the required electrical licences, uses appropriately accredited designers and installers, and can provide current insurance details. Compare itemised quotes covering panels, inverter, mounting, workmanship, warranties, monitoring, approvals and grid connection responsibilities. Read the contract carefully, confirm who will claim any applicable incentives, and look for recent reviews or references. Before signing, verify the proposed system suits your home with an independent licensed electrician or through your electricity distributor where appropriate.