Look for a Newcastle solar installer with current Clean Energy Council accreditation, appropriate NSW electrical licences and relevant local experience. Ask for an itemised quote covering panels, inverter, mounting, installation, grid connection, warranties and any expected rebates or incentives. Compare system designs based on your roof, energy use, shading and export limits rather than choosing on price alone. Check recent reviews, written warranty terms and who will provide after-sales support, and confirm technical details with your electricity distributor before signing.