There is no single national commercial solar rebate in 2026, but eligible systems up to 100 kW may receive an upfront benefit through Small-scale Technology Certificates (STCs) under the federal Small-scale Renewable Energy Scheme. Larger systems may be eligible to create Large-scale Generation Certificates (LGCs), whose value depends on market conditions and project eligibility. Some states and territories also offer business grants, loans or incentives, with rules varying by location and funding round. Check the Clean Energy Regulator, your state energy department and a qualified installer or adviser before relying on an estimate.