If your house is single phase power, the amount of rooftop solar PV that you can install will depend on your electricity network provider, as each electricity network provider has different rules.
In almost all instances, you can install more inverter capacity than what the electricity network provider says, so long as you grid export limit your solar PV system. Note: Not all inverters have grid export limit capability.
Below is a table showing the allowed capacity (inverter capacity and your grid export limit), for each of the electricity network providers for single phase households:
| SA Power Networks (SA) | max 10kW inverter capacity, 5kW export limit |
| Powercor (VIC) | no inverter limit, 5kW export limit |
| CitiPower (VIC) | no inverter limit, 5kW export limit |
| Ausnet Services (VIC) | max 10kW inverter capacity, 5kW export limit |
| United Energy (VIC) | max 10kW inverter capacity, 10kW export limit |
| Jemena (VIC) | max 10kW inverter capacity, 10kW export limit |
| Energex (QLD) | max 10kW inverter capacity, 5kW export limit |
| Ausgrid (NSW) | max 10kW inverter capacity, 10kW export limit |
| EVO Energy (ACT) | max 10kW inverter capacity, 5kW export limit |
