Large scale renewables and generation

An embedded generating system (such as solar) is one that is connected to a distribution network rather than connected to the high-voltage transmission network.

Embedded generating systems vary in type and size from a typical 1 kW domestic solar photovoltaic (PV) unit to a 50 MW wind farm, and may include, among other things, the following technologies:

• Solar PV cells
• Bagasse (the fibrous material left-over from crushed sugar cane)
• Wind turbines
• Thermal
• Hydro.

The process of connecting an embedded generator to the distribution network is regulated by the National Electricity Rules (NER).

We have several connection processes, depending on the size and regulatory classification of your proposed embedded generating system.

Important information for generators

Connection Standard for HV connected generating systems released

We've released the joint standard with Energex that will apply to all embedded generating systems connected at either low voltage (LV) or high voltage (HV), where the connection point with us is to the HV distribution network.

Refer to STNW1175 Connection Standard for HV Connected Generating Systems (PDF 638.7 kb) which is effective from 13 August 2018.

Generator registration with the Australian Energy Market Operator (AEMO)

Under the NER, any person who owns, controls or operates a generating system connected to a distribution network, must register as a generator with AEMO. The exception being where they either have the benefit of AEMO’s standing exemption (which usually applies to generating systems less than 5 MW in size) or have applied individually to AEMO and received a specific exemption.

For information on the AEMO generation registration requirements and participant categories in the National Electricity Market (NEM), please see AEMO’s website and relevant guidelines.

Utility scale battery technology

AEMO is reviewing utility scale battery technology in the NEM. For further information see AEMO Utility Scale Battery Technology webpage.

Authority for generation capacity over 30 MW

If you intend to operate more than 30 MW of generation capacity and connect it to a distribution or transmission network in Queensland, you must first hold a generation authority or special approval.

This authority is issued by the Department of Natural Resources Mines and Energ (DNRME). A failure to hold such an authorisation is an offence under the Electricity Act 1994 (Qld).

If you are proposing to operate more than 30 MW of generation capacity at a site and connect it to a network, we strongly suggest that you contact DNRME early in your planning process.  This will allow for the application to be made to the Director General, considered and approved before the proposed connection. The process can typically take four months from application.

You can call DNRME on 13 43 87 to discuss licensing requirements and the application process.

How do I apply for connection?

Model connection agreements

To establish or modify a generation connection to our distribution system, we require you to enter into a Negotiated Connection Establishment Contract (PDF 999.0 kb) (we refer to this as the Construction Contract). This sets out the works that both parties will need to perform for the connection.

In addition, due to the nature of your facility, we expect that you will also enter into a separate Negotiated Ongoing Connection Contract (PDF 856.9 kb) (we refer to this as the Connection Agreement). This governs the ongoing connection of your facility to our distribution system after the completion of the works (rather than rely upon the Deemed Standard Connection Contract (PDF 277.3 kb) that applies by default under legislation).

Reference documents for embedded generators

Please also refer to the Major Customer Connections Manuals and Fact Sheets.

Get in touch

Do you have a specific question about connecting an embedded generator?

If so, please contact our Major Customer Connections Group at majorconnections@ergon.com.au.

For general enquiries please contact the Connections Operations team on 1300 18 914 or at majorcustomers@energyq.com.au.