Before having a renewable energy generator (domestic generation unit or an AS 4777-compliant generating system) installed at your property, you must seek approval from your power distribution company to connect the system to the electricity grid.
This application is usually lodged on your behalf by your solar PV retailer. Following the approved installation, your solar retailer and distribution company will organise for the meter to be changed or reconfigured and the system to be connected to the grid.
The distribution company will then notify your preferred electricity retailer of the connection.
As the full process can differ from state to state, we encourage you to refer to the relevant grid connection guide: