The Market Advisory Committee (MAC) is a committee of industry and consumer representatives convened under the Electricity System and Market (ESM) Rules to provide advice in relation to Rule Change Proposals, Procedure Change Proposals and the evolution of the ESM Rules.
Upcoming MAC meeting dates 2026
- 12 February 2026
- 19 March 2026
- 7 May 2026
- 18 June 2026
- 30 July 2026
- 10 September 2026
- 22 October 2026
- 3 December 2026
Meeting papers are available on the following webpages:
- MAC meetings held between January 2025 and December 2025
- MAC meetings held between January 2024 and December 2024
- MAC meetings held between January 2023 and December 2023
- MAC meetings held between January 2022 and December 2022
- MAC meetings held between July 2021 and December 2021
- MAC meetings held between December 2013 and June 2021
- MAC meetings held between February 2008 and November 2013
- MAC meetings held prior to December 2007
Governance documents
The ESM Rules outline the functions and composition of the MAC, as well as the procedures for appointing new members. The ESM Rules require the Coordinator of Energy (Coordinator) to develop and publish a Constitution for the MAC.
In early 2024, the Coordinator commenced a review of the structure and operation of the MAC under clause 2.2D.1(h) of the ESM Rules (the Review).
The objective of the Review was to assess whether the MAC’s structure, functions and processes remain fit-for-purpose in light of the evolving market, the expanding scope of the ESM Rules and the State Electricity Objective. Further information on the Review can be found here.
The Review Outcomes require that the composition and Constitution of the MAC be amended in accordance with clause 2.3.3 of the ESM Rules to be consistent with the ESM Rules.
- The proposed ESM Amending Rules were the subject of a second round of public consultation, conducted from 6 October to 27 October 2025. These ESM Amending Rules will be submitted to the Minister for Energy for making and gazettal together with the rest of the next Tranche of ESM Amending Rules – Tranche 9.
- Although the above ESM Amending Rules are yet to commence, the Coordinator is initiating the consultation process on the MAC Constitution and seeking MAC nominations prior to their gazettal, (i.e. as if those Amending Rules were in force) to allow adequate consultation with stakeholders ahead of the Christmas period and prior to the expiry of the appointments of all current MAC members in February 2026.
In accordance with clause 2.3.2 of the ESM Rules, the Coordinator is required to develop and publish a Constitution for the MAC, which under clause 2.3.3 of the ESM Rules must be consistent with the ESM Rules.
The current and proposed amendments to the MAC Constitution and current MAC Membership are available as links below.
Stakeholders are invited to provide written feedback on the proposed amendments to the MAC Constitution before 5:00pm (AWST) on 22 December 2025 by submitting comments to energymarkets@deed.wa.gov.au.
Late submissions may not be considered.
Any submissions received will be published on the Energy Policy WA web site unless requested otherwise.
Following industry consultation on the proposed changes to the MAC Constitution, with any appropriate amendments to address stakeholders’ input, the amended MAC Constitution will be published on this webpage.
Information about nominating for MAC Membership can be found below.
Market Advisory Committee Working Groups
The MAC may establish Working Groups, comprising representatives of Rule Participants and other interested stakeholders, to assist it in providing advice to the Coordinator of Energy, ERA and AEMO.
The following Working Groups are currently active:
- AEMO Procedure Change Working Group.
- Capability Class 2 Technologies Review Working Group
- Cost Allocation Review Working Group
- Essential System Services (ESS) Framework Review Working Group
- Power System Security and Reliability Standards Working Group
- WEM Procedure Content Review Working Group
- Wholesale Electricity Market Investment Certainty Review Working Group
For information on past Working Groups, visit the webpage: Market Advisory Committee Inactive Working Groups.
Annual Market Advisory Committee Composition Reviews
Under clause 2.3.9 of the ESM Rules, the Coordinator must annually review the composition of the MAC and may remove and appoint members following the review.
The review process is outlined in the ESM Rules and the MAC Constitution, provided under the MAC Governance Documents section above.
- The MAC Composition is usually undertaken at the end of each year, however the MAC Composition review for 2025 was not undertaken due to the Review.
- Following the Review, both the Constitution and composition of the MAC (including the number and class of Market Participants) require amendment.
- All current MAC appointments expire on 1 February 2026 and require advertising.
The current and proposed amendments to the MAC Membership are available below:
MAC Membership List (PDF, 62.99KB)
Clause 2.3.5(a) will be amended as a result of the Review and now requires, subject to clause 2.3.13 of the ESM Rules, that the MAC must consist of at least eight and not more than ten members representing Market Participants, or prospective Market Participants.
Clause 2.3.13 will also be amended to require that the Coordinator uses reasonable endeavours to ensure that:
- the MAC membership includes a diverse but balanced representation of Market Participants or prospective Market Participants;
- the MAC membership is representative of the range Facility Classes, and existing and emerging technology types in the Wholesale Electricity Market (WEM); and
- at least one Market Participant or prospective Market Participant that sells, or intends to sell, electricity to customers but has not registered, and does not intend to register, a Scheduled Facility, Semi-Scheduled or Non-Scheduled Facility in the WEM.
As the Review is now complete, the Coordinator is seeking nominations from Rule Participants and industry groups and on 24 November 2025 published a Call for Nominations for all open positions on the MAC.
Interested parties are asked to complete the nomination form below and return it to energymarkets@deed.wa.gov.au by 5:00pm (AWST) on 22 December 2025.
Further information on the 2024 MAC Composition Review and all previous reviews can be found on the Past Market Advisory Committee Annual Composition Reviews page.
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