When you compare solar installers, request itemised quotes showing the system size, panel and inverter brands, estimated output, installation work and total price. Check whether the installer is appropriately licensed and currently accredited for any government incentive requirements, then verify warranties, after-sales support and who will handle faults. Look for recent, independent reviews and ask for references or examples of similar installations in your area. Compare like-for-like proposals, including export limits, switchboard upgrades and monitoring, and consider having a licensed electrician review the details before signing.