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      • AEMO operates Australia's National Electricity Market (NEM), the interconnected power system in Australia’s eastern and south-eastern seaboard, and the Wholesale Electricity Market (WEM) and power system in Western Australia.
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      • AEMO operates gas retail markets in New South Wales and the Australian Capital Territory, Queensland, South Australia, Victoria, and Western Australia. AEMO also operates wholesale gas markets in south-eastern Australia, those being the Declared Wholesale Gas Market in Victoria (DWGM), the Short Term Trading Market in Adelaide, Brisbane and Sydney (STTM), and the Gas Supply Hub (GSH), whose trading locations are based at Wallumbilla in Queensland, and Moomba in South Australia. AEMO also operates the Natural Gas Services Bulletin Board (GBB), and is system operator of the Victorian Gas Declared Transmission System. AEMO is also responsible for Gas Services Information functions in Western Australia.
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  • Power system operation

  • In this section
    • In this section
      Power system operating procedures
      NEM Lack of Reserve Framework Quarterly Reports
      NEM System Restart Information Sessions
      Schedules for Delegations
  • Security of supply is a measure of the power system's capacity to continue operating within defined technical limits, even in the event of the disconnection of a major power system element such as an interconnector or large generator.

    Reliability is a measure of the power system's capacity to continue to supply sufficient power to satisfy customer demand, allowing for the loss of generation capacity.

    AEMO's system operating procedures are developed primarily for AEMO to provide information related to the management of the National Electricity Market (NEM) and security of the power system.

    Guidelines for preparing Local Black System Procedures

    Clause 4.8.12 (e) of the National Electricity Rules requires AEMO to develop and publish guidelines for preparation of local black system procedures in consultation with Generators and network service providers.

    • Guidelines for Preparing Local Black System Procedures (214 KB, doc)

    NEM System Restart Information Sessions

    Click here for further information about System Restart Information Sessions.

    Scope of Delegations to TNSPs

    AEMO has the power to delegate to TNSPs some of the AEMO power system security responsibilities under clause 4.3.3 of the National electricity Rules. The linked page below has details of the delegations made to a number of TNSPs in the NEM.

    Click here for Schedules for Delegations.

    Reserve Level Declaration Guidelines

    An LOR declaration alerts Registered Participants to a probability of capacity reserves being insufficient to avoid load shedding (other than interruptible load) given reasonably foreseeable conditions and events.

    These are the reserve level declaration guidelines made under clause 4.8.4A of the National Electricity Rules (Guidelines).

    These Guidelines  describe the considerations and methodology AEMO applies in deciding to declare an LOR condition, and the levels of LOR conditions that may be declared.

    • Reserve Level Declaration Guidelines V2.1 (1.2 MB, pdf)
    • NEM Lack of Reserve Framework Quarterly Reports

    Power System Operating Procedures

    Click here for the page containing the Power System Operating Procedures.

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