Procedures

Current versions of the Wholesale Electricity Market (WEM) market procedures can be found on this page.

  • Administrative market procedures
    Name Description Related Rules Latest update
    Information Confidentiality This Procedure outlines setting the confidentiality status for market-related information and documents produced or exchanged under the Market Rules or Procedures. 2.37.4, 3.2.4, 7.13.1, 10.2.1, 10.2.7 30 November 2015
    IT Interface Procedure –System Overview and Requirements This Procedure provides details of the various IT interfaces for participating in the WEM. 2.36.5 18 April 2017
    Monitoring and Reporting Protocol This Procedure sets out how AEMO will implement its obligations under the WEM Rules to support the Economic Regulation Authority (ERA) in monitoring Rule Participants’ behaviour for compliance with the WEM Rules and the Market Procedures developed by AEMO. 2.15.6A, 2.15.6B, 2.15.6C 22 May 2019
    Notices and Communications This Procedure documents the method by which notices and communications required under, contemplated by or relating to, the WEM Rules are to be given to or by AEMO. 1.6.2 01 October 2017
  • DER market procedures
    Name Description Related Rules Latest update
    DER Register Information Procedure This Procedure specifies the obligations of AEMO and Network Operators in relation to the submission, storage and reporting of data for the DER Register. 3.24.8 1 July 2020
  • Market operations market procedures
    Name Description Related Rules Latest update
         

    Consumption Deviation Applications    

    This Procedure covers the process and information required for a Market Participant to submit a Consumption Deviation Application, and the process AEMO must follow when assessing an application. 4.26.2CB, 4.26.2CC, 4.26.2CD, 4.26.2CF, 4.26.2CG  1 October 2019
    Capacity Credit Allocation Procedure This Procedure covers the process and information required for a Market Participant to make a Capacity Credit Allocation Submission. 9.4.3, 9.4.17, 9.4.18 24 August 2020
    Facility Registration, De-Registration and Transfer Procedure  This Procedure covers the process for a Rule Participant to register, de-register or transfer its Facilities and the process to be applied by AEMO in processing applications. 2.31.23, 2.30.11, 2.30A.6 19 March 2021 
    Intermittent Load Refund Procedure This procedure outlines the process by which Intermittent Loads will be subject to Reserve Capacity Refunds. 4.28A.3 18 April 2017
    Determining Loss Factors This Procedure covers the process for determining Loss Factors. 2.27.15, 2.27.17, 3.2.6, 3.2.7 1 July 2019
    Meter Data Submission Procedure This Procedure covers how Meter Data Agents submit Meter Data to AEMO, including the timing and format of submissions. 8.6.2 30 November 2015
    Rule Participant Registration and De-Registration Procedure   This Procedure outlines the process for new participant registration and existing Market Participant de-registration. 2.31.23 18 April 2017
    Prudential Requirements Procedure This Procedure outlines how AEMO will manage liabilities that arise in the Settlement process. 2.37.4, 2.37.7, 2.37.8, 2.38.3, 2.40.1, 2.41.5, 2.42.4, 2.43.1 24 August 2020
    Settlement Procedure  This Procedure outlines the financial settlement of trading through the WEM. 9.2.1 19 March 2021             
    Balancing Facility Requirements Procedure This Procedure outlines the technical communication criteria that a Balancing Facility, or a type of Balancing Facility must meet. 3.2.2, 7A.1.6 1 July 2019
    Balancing Market Forecasts Procedure This Procedure outlines the information requirements from System Management to enable the Forecast Balancing Merit Order and Balancing Forecast to be prepared. 7A.3.3, 7A.3.4, 7A.3.15, 7A.3.19, 7A.3.20, 7B.3.3 1 July 2019
    Determination of DSM Dispatch Payment Tranches and Adjustments This Procedure documents the process AEMO has to follow to determine the Tranche 2 and Tranche 3 DSM Dispatch Payments that will be paid to DSM Providers for the decrease in energy consumption (in MWh) when a DSP is dispatched. Further, it outlines the process AEMO has to follow to adjust the calculation of the DSM Dispatch Payments in case the number of DSM Capacity Credits assigned to a DSP changes during a Capacity Year 6.17.6B, 6.17.6E, 6.17.6F 1 July 2019
    Individual Reserve Capacity Requirements This Procedure documents the processes to be followed by:
    a) Market Customers in providing information relating to their loads and demand side management arrangements for the determination of their IRCR on an annual basis and/or on a monthly basis.
    b) AEMO in requesting information from Market Customers in respect of determination of the yearly IRCR and in calculating and publishing the Monthly IRCR.
    4.28.12 01 October 2019
  • Dispatch and Planning Procedures
    Name Description Related Rules Latest Update
    Ancillary Services
    (pdf, 443 KB)  
    This Procedure sets out the procedure to be followed: by AEMO when determining Ancillary Service Requirements and entering into Ancillary Service Contracts; any technical and communication criteria that an LFAS Facility, or a type of LFAS Facility, must meet, and the procedure to be followed by AEMO, Market Participants, Ancillary Service Providers and Network Operators where the WEM Rules require Ancillary Services to be provided 3.2.2, 3.3.3, 3.11.14, 3.11.15, 7B.1.2  1 July 2019
    Commissioning Tests
    (pdf, 78 KB)  
    This Procedure sets out the requirements that System Management and Market Participants must follow when planning and conducting tests of a generating system to verify its output. 3.21A.15  1 June 2019
    Communications and Control Systems
    (pdf, 387 KB)  
    This Procedure sets out the communications and control system requirements necessary to support the dispatch process and enable AEMO to remotely monitor the performance of a Network.   2.35.4, 2.36A.5  1 July 2019
    Credible Contingency Events
    (pdf, 799 KB)    
    The purpose of this Procedure is to describe AEMO’s process for determination and classification of Credible Contingency Events, Contingency Reclassification Conditions, factors taken into account in reclassifying a Contingency Event, process for reclassifying a Non-credible Contingency Event as a Credible Contingency Event, procedures for notifying affected Rule Participants when AEMO determines a new Contingency Event or reclassifies a Non-credible Contingency Event as a Credible Contingency Event and a description of the Contingency Events that are generally considered as Credible Contingency Events, taking into consideration relevant requirements in the Technical Rules of the relevant Network Operator. 3.8A.4(a), 3.8A.4(b), 3.8A.4(c), 3.8A.4(d), 3.8A.4(e), 3.8A.4(f), 3.8A.6(b), 3.8A.7 1 February 2021
    Dispatch
    (pdf, 570 KB)  
    This Procedure sets out the processes that Rule Participants must follow to meet dispatch requirements specified in the WEM Rules. 3.21B.5, 3.21B.8, 4.11.1, 7.2.5, 7.6.10, 7.6.10A, 7.6.13, 7.6A.2, 7.6A.7, 7.6A.8, 7.7.4A, 7.7.5A, 7.7.5B, 7.7.5C, 7.7.6, 7.7.9, 7.9.19, 7.13.1, 7.13.1C, 7.13.3, 7.13.5, 7A.3.7, 7A.3.7A, 7A.3.15, 7B.1.4 1 July 2019
    Generator Monitoring Plans
    (pdf, 1.4 MB)  
    The purpose of this Procedure is to document the requirements in a Template Generator Monitoring Plan; the process by which a Market Participant must submit a proposed Generator Monitoring Plan for a Transmission Connected Generating System, the process by which a Market Participant must submit proposed updates and amendments to a Generator Monitoring Plan previously approved by AEMO, the process by which AEMO must assess and approve a Generator Monitoring Plan proposed by a Market Participant; and updates and amendments to a proposed Generator Monitoring Plan approved by AEMO, the tests that a Facility must conduct in order to demonstrate compliance with its Registered Generator Performance Standards and Generator Monitoring Plan, and the process by which a Market Participant must report any alleged non-compliance or suspected non-compliance with: applicable Registered Generator Performance Standards, an applicable approved Generator Monitoring Plan or an approved Rectification Plan.  1.41.6(a), 1.41.6(b), 3A.6.2(a)(i), 3A.6.2(a)(ii), 3A.6.2(a)(iii), 3A.6.2(b), 3A.6.2(c), 3A.6.2(d), 3A.6.2(e), 3A.9.1(a), 3A.9.1(b), 3A.9.4. 1 February 2021
    Facility Outages
    (pdf, 372 KB)  
    This Procedure sets out the processes that Rule Participants must follow when conducting outage planning for a Facility, when conducting final approval of outages, when determining and reporting Forced Outages and Consequential Outages, and that AEMO must follow when calculating Planned Outage and Forced Outage rates for the purposes of assigning Certified Reserve Capacity. 3.18.15, 3.18.21, 3.19.10, 3.19.14, 3.21.12, 4.11.1  1 February 2020
    IMS Interface
    (pdf, 480 KB)  
    This Procedure sets out the reasonable arrangement by which Network Operators and AEMO must provide each other with information under WEM Rules. The proposed amendments relocate content to the Power System Operation Procedure: Communications and Control Systems. 2.13.6A, 2.15.6A, 2.28.3A, 2.36A.1, 2.36A.5, 3.2.2, 3.2.4, 7.13.1, 7A.3.7, 7A.3.7A 1 July 2019
    Medium Term PASA
    (pdf, 90 KB)
    This Procedure sets out the procedures System Management and Rule Participants must follow in the preparation and publishing of the Medium Term PASA. 3.16.4, 3.16.7, 3.16.8A, 3.16.10 1 June 2019
    Network Modelling Data
    (pdf, 300 KB)  
    This Procedure specifies the information that a Network Operator must provide to System Management for each of its Networks, the processes to be followed by Network Operators and AEMO, and the technical and communication criteria that must be met. 3.2.2, 3.2.4, 3.2.6, 3.2.7, 3.3.3, 3.4.9, 3.5.11 13 October 2017
    Power System Security
    (pdf, 413 KB)  
    This Procedure sets out the processes AEMO must follow to maintain Equipment Limit information, AEMO and Network Operators must follow when determining Security Limits and maintaining Security Limit information, AEMO must follow when establishing and modifying the Technical Envelope and AEMO must follow to ensure the SWIS operates according to the Technical Envelope applicable to each SWIS Operating State, and guidelines describing matters AEMO will consider when determining the SWIS Operating State.   3.2.2, 3.2.4, 3.2.6, 3.2.7, 3.3.3, 3.4.9, 3.5.11  1 July 2019
    Short Term PASA
    (pdf, 92 KB)
    This Procedure sets out the procedures that System Management and Market Participants must follow in the preparation of the Short Term PASA. 3.17.10  1 June 2019 
    Tolerance Ranges
    (pdf, 183 KB)  
    This Procedure documents the process for determining and reviewing the annual Tolerance Range and any Facility Tolerance Ranges.   2.13.6K, 3.2.2, 3.3.3  21 April 2018 
  • Reserve capacity market procedures
    Name Description Related Rules Latest update
    Electric Storage Resource Obligation Intervals WEM Procedure The purpose of this Procedure is to document the processes to be followed by AEMO for determining the Trading Intervals that will be classified as Electric Storage Resource Obligation Intervals in a Trading Day, the processes to be followed by AEMO for publishing the Trading Intervals classified as Electric Storage Resource Obligation Intervals on the WEM Website, the circumstances, if any, that allow AEMO to amend the Trading Intervals classified as Electric Storage Resource Obligation Intervals and the obligations on AEMO to consult with Market Participants.  4.11.3A(c)(i), 4.11.3A(c)(ii), 4.11.3A(c)(iii), Chapter 11 definition: Electric Storage Resource Obligation Duration  1 July 2021
    Facility Sub-Metering WEM Procedure The purpose of this Procedure is to outline the characteristics and requirements of Facility Sub-Metering, including accuracy requirements; the procedures to be followed by Market Participants for auditing of Facility Sub-Metering, the communication requirements and protocols between a relevant Market Participant and AEMO, the processes to be followed by a Market Participant for providing Facility Sub-Metering information to AEMO and any other matters which AEMO considers relevant.  2.29.12, 2.29.13, 2.29.14, 2.29.15.(a), 2.29.15.(b), 2.29.15.(c), 2.29.15.(d), 4.9.3, 4.13.10B, 4.25, Appendix 9  1 July 2021
    Certification of Reserve Capacity This Procedure documents the process Market Participants must follow in applying for Certified Reserve Capacity or Early Certified Reserve Capacity, and AEMO must follow in processing those applications, including to assign Certified Reserve Capacity, set Reserve Capacity Obligation Quantities, and approve Early Certified Reserve Capacity. 4.9.3, 4.9.10, 4.11.1, 4.28C.15 15 June 2020
    Declaration of Bilateral Trades and the Reserve Capacity Auction This Procedure covers how Rule Participants propose the level of Certified Reserve Capacity intended to be traded bilaterally and how AEMO processes the declaration and assigns Certified Reserve Capacity. 3.2.6, 4.14.11, 4.17.9 16 Oct 2020
    Reserve Capacity Performance Monitoring This Procedure details the requirements and processes for determining the performance of the market with regard to Reserve Capacity. 4.27.5, 4.27.12 01 Oct 2017
    Reserve Capacity Security This Procedure outlines how Market Participants holding Certified Reserve Capacity must submit Reserve Capacity Security. 2.1A.2,
    4.13.8,
    4.13A.23
    1 July 2020
    Reserve Capacity Testing This Procedure details the steps to be followed by AEMO and Market Participants in performing Reserve Capacity Tests. 2.1A.2(h), 2.9.7, 2.9.7A, 2.9.8, 4.25.14 1 August 2020
    Treatment of Small Generators This Procedure describes the process for assigning Capacity Credits to New Small Generators. 4.28B.9 30 Nov 2015
    Undertaking the LT PASA and conducting a review of the Planning Criterion This Procedure documents the process by which AEMO conducts the Long Term PASA and the review required under clause 4.5.15 of the WEM Rules. 4.5.14, 4.5.16 01 Oct 2017
    Determination of Expected DSM Dispatch Quantity and DSM Activation Price This Procedure documents the process by which AEMO calculates the Expected DSM Dispatch Quantity and the DSM Activation Price. 3.2.6, 4.5.14, 4.5.14B, 4.5.14C 09 Jun 2017 
    Supplementary Reserve Capacity This Procedure describes the process that AEMO and System Management must follow in acquiring Eligible Services, entering into the Supplementary Capacity Contract, and determining the Maximum Contract Value per hour of availability for any Supplementary Capacity Contract. 4.24.18 18 Apr 2017

Other Market Procedures

Economic Regulation Authority Market Procedures can be found here.

Rule Change Panel Market Procedures can be found here, with details of changes to those procedures available here.

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