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Energy Policy WA published the Exposure Draft of WEM Amending Rules (Miscellaneous Amendments No. 3) on 10 June 2024. Amongst other amendments, this included proposed WEM Amending Rules to:

• require AEMO to inform EPWA and the ERA of any issues that are likely to adversely affect the effectiveness of the market or achievement of the Wholesale Market Objectives;
• require AEMO to investigate and report on significant incidents in the SWIS;
• reduce the deadline for providing AEMO any final details of a Forced Outage from fifteen days to seven days after the relevant Trading Day to allow for certain settlement calculations to be performed earlier;
• allow AEMO to proactively share information with EPWA and the ERA without requiring a formal request;
• clarify the publication requirements associated with NCESS contracts;
• allow AEMO to require more reserve capacity security to be lodged in the event that security has been drawn upon due to Facility not commencing on time;
• provide clarity around the Availability Duration Gap determination for all years in the LT PASA horizon;
• amend the definitions of Enablement Maximum and Enablement Minimum to improve clarity, and ensure that Enablement Limits accurately reflect the capability of a Facility;
• modify the settlement rules to allocate the costs of NCESS Contracts for peak capacity as a Reserve Capacity cost, i.e. on the basis of IRCR;
• remove barriers to entry and encourage participation of aggregated DSPs in the RCM;
• update clause 7.4.35 to allow a Market Participant to make a Real-Time Market Submission after Gate Closure if directed to do so by AEMO;
• refine the cost allocation methodology for Contingency Reserve Raise;
• define a Facility by its Metering Point, rather than its connection point, to allow for registration of multiple Facilities behind a single connection point following approval from AEMO;
• include transitional rules to extend the timeframes related to the submission, consideration and approval of AEMO’s Allowable Revenue for the 2025 to 2028 period;
• clarify the settlement provisions related to calculating FCESS Uplift Payments; and
• error corrections and enhancements across all the WEM Rules.

You can view the Miscellaneous Amendments No. 3 Exposure Draft below.

Consultation closed at 5:00pm (AWST) 8 July 2024.

The Minister for Energy has approved the Wholesale Electricity Market Amendment (Miscellaneous Amendments No.3) Rules 2024 and notice of the amendments was published in the ºÚÁÏÕýÄÜÁ¿ Gazette on 4 October 2024.