When you install a solar system, you generate Small Technology Certificates (STCs) that are referred to as a ‘Government Solar Rebate.’ You will receive 1 STC for every Megawatt of energy your system is expected to produce until 2031. After the installation of your system and registration of the STCs, you can sell them to recover a portion of the purchasing cost of the solar PV system.
For instance, a 5 kW system (with approximately 17 panels) will produce around 88 MWh worth of electricity over the 11-year time period till 2031, which would entitle you to 88 STCs.
Besides, for every unit of electricity your solar power system produces and that you consume means that you do not need to purchase that unit from your energy retailer.