Guides and useful information
These documents will help you become familiar with the Wholesale Electricity Market (WEM).
Guidelines
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28/12/2018
Guideline: Cleansing of generation facility MWH output data
384.23 KB -
06/06/2019
Participation Guideline for Energy Storage Systems in the WEM
315.54 KB -
26/07/2019
Guideline - PASA Methodology
416.18 KB -
23/08/2019
Ancillary Services Certification Guidelines
789.54 KB -
04/09/2019
Technical Specification Operational Data Points for Generating Plant
417.45 KB
Specifications
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26/11/2020
WEMS Submission Specifications v6.9
Effective 25 November 2020
733.67 KB -
09/09/2020
WEMS Submission Validation v5.5
Effective 9 September 2020
674.47 KB -
31/08/2020
WEMS Report Specification v3.11
Effective 2 September 2020
1.79 MB -
21/08/2020
WEM Metering Settlement and Prudential Calculations Version 1
Effective 1 September 2019 to 21 February 2020
1.03 MB -
21/08/2020
WEM Metering Settlement and Prudential Calculations Version 2
Effective 22 February 2020
1.03 MB
WEM and GBB (WA) participant support guide
Operational contingencies
File exchange csv templates
The following templates are provided to help Market Participants make submissions in the Wholesale Electricity Market System (WEMS) Market Participant Interface (MPI):
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06/07/2016
bilateral
159 B -
06/07/2016
resources_participant_details
178 B -
06/07/2016
resources_facility_details
94 B -
06/07/2016
stem_demand_portfolio_curve
50 B -
06/07/2016
resources_synchronisation
30 B -
06/07/2016
stem_ancillary_service
75 B -
06/07/2016
stem_facility_detail
102 B -
06/07/2016
stem_supply_portfolio_curve
125 B -
06/07/2016
balancingvariation
149 B -
06/07/2016
loadfollowingvariation
99 B -
06/07/2016
balancingstanding
159 B -
06/07/2016
loadfollowingstanding
109 B