A good solar installer guide should explain how to compare installers, system designs, warranties, pricing and expected performance. Check that the installer uses appropriately accredited professionals, provides a detailed written quote and can explain equipment, approvals, grid connection and ongoing support. Ask about workmanship and manufacturer warranties, maintenance, monitoring and who will handle any faults or warranty claims. Rebate and certificate arrangements can vary, so confirm current information through energy.gov.au and check the proposed system with your electricity distributor before signing.