In 2026, a solar battery may be worthwhile if you regularly use electricity in the evening, have high grid tariffs, or want greater backup resilience. Compare the battery’s usable capacity, power output, warranty, expected cycle life, installation cost and compatibility with your existing solar system—not just its advertised size. Federal or state incentives may be available, but eligibility, battery requirements and payment amounts depend on the relevant scheme and can change, so check energy.gov.au and your state program. Ask an accredited solar battery installer to model your savings using your actual usage and current electricity plan.