A good solar panels guide should cover your electricity use, roof space, shading, panel orientation and the system size that may suit your household. Compare the panel warranty, inverter quality, expected output and whether a battery is worthwhile, rather than choosing on price alone. Get quotes from appropriately accredited installers and check what is included, such as monitoring, approvals and after-sales support. Federal incentives such as Small-scale Technology Certificates may reduce the upfront cost, but eligibility and savings depend on your system, location and circumstances, so check current information on energy.gov.au.