Battery storage connections

Before installing your battery storage system, you must submit an application to Energex to advise the intent to connect your battery storage system to the network.

Generally, your battery installer will be able to assist with this process. They should follow connection instructions provided by the manufacturer and by Energex.

Export or non-export system

Before you arrange to install a battery storage system, you'll need to decide whether or not you want to export electricity back to the grid. There will be a different connection process depending on which option you choose.

If you do not intend to export electricity back into the grid

  • Your installer should submit an online network connection application on your behalf via our Electrical Partners Portal. Or you can apply yourself via our Customer Portal.
  • If you originally go with a 'non-export' system and would like to be able to export electricity in the future, you will need to submit a new network connection application with Energex.

If you want to export electricity back into the grid

  • If you have more power than you need, you may wish to have your battery storage system export electricity back to the grid.
  • Some battery storage systems are designed to allow this while others are not.
  • There is a different connection agreement required for an 'export' system.
  • Your electricity retailer may be prepared to pay you their own solar feed-in-tariff, but this will be through a separate negotiation process between yourself and the electricity retailer.

Options for charging your battery storage system

From the grid

You may decide to charge your battery storage system from the electricity grid. This may be a good option if you would like to take advantage of low-cost, time of use and economy tariffs to charge your batteries. You can then use the stored power during peak times.

Talk to your electricity retailer about the most suitable tariff to connect your battery storage system to. Time of use and economy tariffs charge less for electricity used to charge your battery, but are not available 24 hours a day.

With solar power

If you are considering charging your battery storage system with solar power, setting your connection up so you can also charge your battery off the grid will give you a safety net when there is extended overcast weather. You may be able to prioritise your battery storage system so that it charges first from solar and then from the grid, or from solar only.

Switchboard rewiring

If you decide to connect your battery storage system to your solar PV system, you may require some rewiring of your switchboard. Your battery installer will be able to provide advice.

It will be necessary to submit a new network connection application to us prior to this occurring.