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    Large high voltage DER systems (including batteries)

    A Distributed Energy Resource (DER) system (such as solar) is one that is connected to an electricity distribution network rather than to the transmission network.

    DER 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
    • Diesel standby generating systems (that synchronize to the distribution network for momentary or extended periods
    • Large grid-connected utility scale battery technology.

    The process of connecting a DER system 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 DER system. This page describes the process for high voltage (HV) connected DER systems. For low voltage (LV), refer to our Solar connections & other technologies web pages.

    Important information for generators

    Generator registration with the Australian Energy Market Operator (AEMO)

    Under the NER any person who owns, controls or operates a DER system connected to a distribution network, must register as a generator with AEMO.

    There may be exceptions if you either have the benefit of AEMO’s standing exemption (which usually applies to DER 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 visit the AEMO Utility Scale Battery Technology web page.

    Authority for DER capacity over 30 MW

    If you intend to operate more than 30 MW of DER 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 Energy and Public Works (DEPW). A failure to hold such an authorisation is an offence under the Electricity Act 1994 (Qld).

    If you're proposing to operate more than 30 MW of DER capacity at a site and connect it to a network, we strongly suggest that you contact DEPW 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 DEPW on 13 74 68 to discuss licensing requirements and the application process.

    Information to help with your application

    To start your application, submit a formal connection enquiry to us. Your electrical contractor can complete the enquiry through the Electrical Partners Portal on your behalf.

    Alternatively, you or your consultant can create the enquiry through Customer Self Service.

    IMPORTANT: When completing the enquiry online, go to the ‘MyConnect’ section, select ‘Enquiry’, and then ‘Embedded Generation (inc. Solar) of more than 30kW’.

    After we receive your enquiry, we'll allocate you a dedicated Project Sponsor, who will do the necessary network investigations, as well as scope and estimate your preferred connection options.

    To connect a LV DER system like solar, please refer to the following web pages:

    Further information on the process to connect a HV DER system less than 5 MVA is available in Part A of our latest Embedded Generation Information Pack (PDF 2.4 mb) (PDF 17.5 mb).

    These DER systems can help manage your demand on our network during peak energy use times and assist in the event of emergency outages or electricity supply interruptions.

    Typically, such DER systems benefit from AEMO’s standing exemption and are required to follow the connection process under Chapter 5A of the NER.

    These DER systems include configuration arrangements up to 5 MVA, such as:

    • Non-exporting systems via an IES (including renewable energy sources such as solar)
    • Non-exporting systems via rotating machines (i.e. diesel standby systems)
    • Exporting systems via renewable energy technology such as solar, wind and biogases

    You can use our Enquiry Form in Customer Self Service to start the connection process if you wish.

    Further information on the process to connect a HV DER system above 5 MVA is available in Part B of our latest Embedded Generation Information Pack (PDF 2.4 mb) (PDF 17.5 mb)

    These DER systems can range from a system to help manage your demand on our network, to large scale commercial renewable energy systems who buy and sell in the NEM.

    The connection process under Chapter 5 of the NER applies to:

    • All DER systems that will be registered or otherwise do not benefit from the standing exemption (which generally applies to systems up to 5 MVA)
    • DER systems that do benefit from the standing exemption that have elected to use the Chapter 5 connection process.

    You can use the Enquiry Form in Customer Self Service to start the connection process if you wish.

    Information regarding participant categories and NEM classifications can be found on AEMO’s website.

    Connection contracts

    The National Electricity Rules provides that after a Connection Application is made, the parties are to enter into a Negotiated Ongoing Connection Contract (we call this the Connection Agreement). This governs the ongoing connection of your facility to our distribution network after the completion of the works (rather than rely upon the Deemed Standard Connection Contract that applies by default under legislation).

    In addition, where works are required to establish or modify a DER connection to our distribution network, we require you to enter into a Negotiated Connection Establishment Contract (we call this the Construction Contract). This sets out the works that both parties will need to perform for the connection.

    Reference documents

    Please refer to our Manuals & fact sheets web page for further reference documents relating to our Large Customer connections, including DER systems.

    Get in touch

    Do you have a specific question about connecting a large-scale HV DER system? If so, please contact our Large Customer connections support team.