Search for local installers with relevant electrical licences and, where applicable, accreditation through the Clean Energy Council, then compare several written quotes. Ask whether the quote covers inverter sizing, switchboard work, monitoring, removal of the old unit and grid-connection paperwork, and check the product and workmanship warranty terms. Read recent reviews, confirm the installer has appropriate insurance, and ask who will handle faults or warranty claims. Your electricity distributor may also have specific connection requirements, so verify the proposed system with them or a licensed electrician before work begins.