Search for local installers with experience designing stand-alone systems, rather than relying only on standard grid-connected solar services. Check whether the installer uses appropriately accredited professionals, including a licensed electrician, and ask for references, site assessments and a detailed quote covering batteries, backup generation, maintenance and warranties. Compare several proposals and confirm the system is sized for your seasonal energy use, including periods of low sunlight. You can search the Clean Energy Council’s installer directory, then verify licences and recommendations with your state or territory authority.