The Economic Regulation Authority must annually determine the Benchmark Reserve Capacity Prices (BRCPs) according to a WEM Procedure.
The BRCPs reflect the fixed costs incurred in developing and operating a hypothetical capacity provider, which is meant to reflect the most efficient, least cost new entry technology expected to enter the WEM to provide system security and reliability.
The ERA has updated the WEM Procedure to reflect the Coordinator’s determination of the Benchmark Capacity Providers as a lithium battery energy storage system with 200 MW injection and 1,200 MWh (6-hour) energy storage and a 330 kV connection located on the Clean Energy Link – North.
On 13 November 2025, the ERA published a procedure change proposal and draft WEM Procedure for stakeholder feedback by 11 December 2025. The ERA received four stakeholder submissions.
On 14 January 2026, the ERA published the procedure change report and WEM Procedure, concluding the procedure change process as required by ESM Rule 2.10.
The updated WEM Procedure will take effect on 19 January 2026.
Papers related to this procedure change process are provided below.