* Calculation based on a fixed STC rate of $40 AUD and the 2026 federal base STC factor of 6.8 per kWh. Rebates apply tapering rules: 100% factor up to 14 kWh, 60% for >14–28 kWh, and 15% for >28–50 kWh usable capacity. Systems under 5 kWh are ineligible.
