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  • Australian Energy Market Operator

    Australian Energy Market Operator Australian Energy Market Operator
    • Electricity
      • 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.
      • National Electricity Market
        • Data dashboard
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        • Power of Choice
        • Participant information
        • Network connections
        • Security and reliability
        • Emergency management
        • Settlements and payments
        • Planning and forecasting
        • Retail and metering
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      • Wholesale Electricity Market (WA)
        • Data dashboard
        • Data
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        • Participant information
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        • Planning and forecasting
        • Reserve capacity mechanism
        • Dispatch and market notices
        • Procedures
      • IT Systems
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    • Gas
      • 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.
      • Declared Wholesale Gas Market
        • Data dashboard
        • Data
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        • Participant Information
        • Victorian gas operations
        • Settlements and payments
        • Policies and procedures
        • Market audit reports
        • Market notices
      • Short Term Trading Market
        • Data dashboard
        • Data
        • Participant information
        • Market operations
        • Settlements and payments
        • Policies and procedures
        • Market audit reports
        • Market notices
      • Gas Supply Hubs
        • Data dashboard
        • Data
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        • Settlements and payments
      • National planning and forecasting
        • National Gas Forecasting Report
        • 2017 Gas Statement of Opportunities
        • Victorian Gas Planning Report
        • WA Gas Statement of Opportunities
      • Gas Retail Markets
        • Data
        • Participant information
        • Market procedures
        • Market audit reports
      • WA Gas Services Information
        • GSI participant information
        • GSI procedures
        • GSI Compliance and Audit
      • Emergency management
        • National role
        • Victorian role
      • Natural Gas Services Bulletin Board
      • Western Australia Gas Bulletin Board
      • IT systems
        • IT change and release management
        • User Guide to MIBB Reports
        • aseXML Standards
    • Wholesale Electricity Market (WA)
    • Dispatch and market notices
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  • Dispatch and market notices

  • In this section
    • In this section
      Wholesale Electricity Market (WA)
      • Data dashboard
      • Data
      • Compliance and audit
      • Participant information
      • Security and reliability
      • Settlements and prudential monitoring
      • Planning and forecasting
      • Reserve capacity mechanism
      • Dispatch and market notices
      • Procedures
  • Dispatch advisories

    System Management must inform market participants and network operators of impending or current situations that could have security ramifications for market participants and network operators. It does this by issuing dispatch advisories in the following situations:

    • Generation shortfall/load shedding is occurring or expected.
    • Conditions where committed generation running at minimum levels will exceed forecast load (over-generation).
    • Any ancillary service shortfalls.
    • Major facility outages (generation, transmission, major loads).
    • Fuel shortages that have a wide spread impact on the market.
    • Dispatch or communication system outages.
    • Notification of starting or ending a high risk or emergency operating state.

    A dispatch advisory includes a statement of the operating state (normal, high-risk, or emergency) during the period to which the advisory relates. These advisories include information on how market participants should respond to the situation. The Market Rules recognise that sometimes System Management has to react so quickly to a situation that it is not able to issue a dispatch advisory until after the event.

    Market participants are obliged to keep System Management informed of any circumstances they become aware of that might result in System Management issuing a dispatch advisory.

    Dispatch advisories can be downloaded from the Market Data page. The information provided in the Public Data page is published in accordance with WEM Rule 10.5.1(k).

    Market advisories

    AEMO must inform market participants of impending situations that could impact market outcomes. It does this by issuing market advisories in the following situations:

    • Market system outages, whereby aspects of the market cannot run normally due to systems failures.
    • Notification of suspension of any aspect of the market.

    Market advisories include information on how market participants should respond to the situation. Note that advisories related to dispatch are called dispatch advisories, and are issued by System Management.

    Market advisories can be downloaded from the Market Data page. The information provided in the Public Data page is published in accordance with WEM Rule 10.5.1(k).

    WEMS notices

    The information provided below aims to keep users apprised of the latest system changes, status of participant change requests, API documentation, technical bulletins, end-of-life notices, and scheduled system outages.

    Environments

    The table below details the release and build which is currently running in each environment. The snapshot date indicates the date at which the last snapshot of live market data was taken for the environment, as applicable.

    Environment Version Snapshot date Link
    Live 3.23 (Build 3.23-1336-1): RCM 1.4-2366-6 https://wems.aemo.com.au
    Trial

    3.22 (Build 3.22-1297-5): RCM 1.2-2176-5

    15 November 2017 https://wems-mkt.aemo.com.au

    Trial environments can simulate the operation of the WEM, but actual market outcomes may vary in these environments due to testing activities of Market Participants and AEMO, differences in software versions, and the time since the last snapshot.

    Releases

    Version

    Deployment date

    Release notes

    3.24 (Build 3.24-1356): RCM 1.5-2570
    19 February 2018 Link
    3.23 (Build 3.23-1336-1): RCM 1.4-2366-6
    29 November 2017 Link
    3.22 (Build 3.22-1297-5): RCM 1.3-2272-1
    26 October 2017 Link

    3.22 (Build 3.22-1297-5): RCM 1.2-2176-5

    28 September 2017 Link
    3.21 (Build 3.21-1236-24): RCM 1.1-2098-8 13 September 2017 Link
    3.21 (Build 3.21-1236-22) 3 August 2017 Link
    3.19 Patch 1 (Build 3.19-1192-13) 31 May 2017 Link
    3.19 (Build 3.19-1192-10) 26 April 2017 Link
    3.18 (Build 3.18-1183-5) 28 September 2016 Link
    3.17 (Build 3.17-1149-11) 17 August 2016 Link
    3.16 (Build 3.16-1105-2) 25 May 2016 Link
    3.14 (Build 3.14-1016-3) 2 March 2016 Link
    3.13.1 (Build 3.13.1-981-6) 13 January 2016 Link
    3.13 (Build 3.13-981-1) 29 November 2015 Link
    3.12 Patch 1 (Build 3.12-913-35) 28 October 2015 Link
    3.12 (Build 3.12-913-9) 23 September 2015 Link
    3.11 Patch 4 (Build 3.11-374-128) 15 July 2015 Link
    3.11 Patch 3 (Build 3.11-374-116) 29 April 2015 Link
    3.11 Patch 2 (Build 3.11-374-93) 6 March 2015 Link
    3.11 Patch 1 (Build 3.11-374-81) 19 January 2015 Link
    3.11 (Build 3.11-374-63) 10 December 2014 Link
    3.10 Patch 2 (Build 3.10-99-63) 8 August 2014 Link
    3.10 Patch 1 (Build 3.10.1) 11 June 2014 Link

    Presentations

    • IT User Group – 3 July 2015
    • IT User Group – 20 March 2015
    • Austraclear Testing Enhancement 5 Briefing Session – 14 August 2015
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