A solar battery can help homeowners use more of their solar power after dark, reduce reliance on grid electricity and provide limited backup during outages, depending on the system. Whether it is worthwhile depends on your electricity usage, export rate, battery size, installation costs, tariff and how long you plan to stay in the home. Compare quotes from reputable installers and check the battery’s warranty, usable capacity and backup capabilities. You can also review current incentives and guidance through energy.gov.au, as eligibility and savings can change.