Use the Clean Energy Council’s current installer resources to confirm the installer’s accreditation and check that any required electrical licences are held for your state or territory. Ask for a detailed written quote covering system design, equipment models, warranties, estimated performance, installation costs, grid connection and any Small-scale Technology Certificate arrangements. Check who will handle approvals, whether the installer has appropriate insurance, and how faults or warranty claims are managed. Compare several quotes and verify key details with your electricity distributor and the relevant official CEC or government website.