There is no single Australia-wide off-grid solar rebate that applies to every household in 2026. Some standalone power systems may be eligible for federal Small-scale Technology Certificates (STCs), while state or territory programs can have separate rules, funding limits and closing dates. Eligibility may depend on your location, system design, equipment, installer and whether the property meets the relevant requirements. Check energy.gov.au and your state or territory government website, then ask an accredited solar installer to confirm which incentives may apply before signing a contract.