• Power system operation

  • In this section

  • 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.

    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.

    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.

    An overview of this new method for determining LOR levels is also included below. 

    Power System Operating Procedures