South Australia Solar Power System Grid Connection Rules & Process

Across Australia, Distributed Network Service Providers (DNSPs) – entities that own and maintain electricity networks – have different rules concerning inverter limits. In South Australia, there’s only one DNSP – SA Power Networks (SAPN). The following information is current as at August, 2023.





Single phase: 10 kW inverter limit, 5 kW export limit.

Three phase: 30 kW inverter limit, 15 kW export limit.

Battery inverters don’t count towards phase inverter limit.  Battery inverters have a separate additional limit of 10kW per phase on top of the 10kW solar inverter limit.

Optional, dynamic export limit allows 1.5-10kW export per phase.

SAPN website

SA Solar Grid Connection Process

In South Australia, it’s a fairly simple process to have your solar power system connected to the mains grid, with your solar installer doing much of the work in terms of paperwork.

1. Network Approval

Your solar installer will need complete an SA Power Networks Small Embedded Generator Request Form. For systems under 5kW, an approval number should be provided immediately and usually within 5 days for larger home solar systems.

2. Installer To Contact Your Energy Retailer

Your installer will send the SEG approval number along with other details to your energy retailer, who will arrange for your electricity meter to be changed.

3. Meter Installation Arrangements

Your energy retailer will then arrange with their own sub-contractors to install your electricity meter. This used to take 4-6 weeks, but  varied depending on the retailer. However, under recent changes, the retailer must provide a meter installation for a new connection or perform a simple meter exchange by a date agreed on with you. In the absence of any agreement, the retailer is required to complete a simple meter exchange within 15 business days, or within 6 business days for a new connection.

Your solar power system can be installed before or after the meter is installed.
NOTE: The electricity retailer will not change the meter unless you have a meter isolator installed in your meter box. Most houses built before 2005 don’t have meter isolators. Your solar company should install a meter isolator for you free of charge.

4. System Installation

Once the system is installed and your meter is changed you can switch your solar power system  on. Most retailers will be already aware that the system is on, but it doesn’t hurt to call your electricity retailer to confirm that the solar is up and running.

Sit back and enjoy the solar savings!

Note: You may wish to shop around for electricity details as feed-in tariffs can vary retailer to retailer – and bear in mind the best feed in tariff doesn’t always represent the best electricity deal overall for solar owners.

 To get your quotes, please enter your postcode: