Guides and useful information

These documents will help you become familiar with the Wholesale Electricity Market (WEM).

Original market design

06/07/2016
The South West interconnected System Wholesale Electricity Market: An overview
282.35 KB
06/07/2016
WEM design summary v1.4
24 October 2012
1020.76 KB
06/07/2016
Renewable energy generators and demand side management
August 2006
48.87 KB

User guides

Fact sheets

Guidelines

Specifications

01/07/2021
WEMS Report and Web Services Specification v3.14
Effective 1 August 2021
1.81 MB
29/03/2021
WEMS Submission Specifications v6.10
Effective 14 April 2021
1.22 MB
25/05/2021
WEMS Submission Validation v5.6
Effective 14 April 2021
1.04 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
26/05/2021
WEM Metering Settlement and Prudential Calculations Version 3
Effective 1 July 2021
1.07 MB
26/05/2021
WEM Metering Settlement and Prudential Calculations Version 3 - Text
Effective 1 July 2021
416.85 KB
08/07/2021
DRAFT WEM Metering Settlement and Prudential Calculations Version 4
Effective 1 October 2021 - Changes as a result of Wholesale Electricity Market Amendments - Reserve Capacity Pricing Reforms
1.07 MB
08/07/2021
DRAFT WEM Metering Settlement and Prudential Calculations Version 4 - Text
Effective 1 October 2021 - Changes as a result of Wholesale Electricity Market Amendments - Reserve Capacity Pricing Reforms
409.8 KB

WEM and GBB (WA) participant support guide

03/07/2019
AEMO WEM and GBB WA Participant Support Guide v32
310.96 KB

Operational contingencies

Frequently asked questions

To view the current Registration Fees, please visit the fees and charges page

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):

ElectricityWholesale Electricity MarketRegistration

Guides and useful information

Original market design

The South West interconnected System Wholesale Electricity Market: An overview

WEM design summary v1.4

Renewable energy generators and demand side management

User guides

WEMS MPI User Guide v6.17

WEMS Registration Technical Guide v3.10

Market participant administrator guide v2

Fact sheets

WEM Credit Support Fact Sheet

Fact sheet: New Generators participating in the WEM

Guidelines

Guideline: Cleansing of generation facility MWH output data

Participation Guideline for Energy Storage Systems in the WEM

Guideline - PASA Methodology

Ancillary Services Certification Guidelines

Technical Specification Operational Data Points for Generating Plant

Specifications

WEMS Report and Web Services Specification v3.14

WEMS Submission Specifications v6.10

WEMS Submission Validation v5.6

WEM Metering Settlement and Prudential Calculations Version 1

WEM Metering Settlement and Prudential Calculations Version 2

WEM Metering Settlement and Prudential Calculations Version 3

WEM Metering Settlement and Prudential Calculations Version 3 - Text

DRAFT WEM Metering Settlement and Prudential Calculations Version 4

DRAFT WEM Metering Settlement and Prudential Calculations Version 4 - Text

WEM and GBB (WA) participant support guide

AEMO WEM and GBB WA Participant Support Guide v32

Operational contingencies

AEMO WEM Operational Contingencies v31

Operational financial contingency

Frequently asked questions

Reserve Capacity Mechanism - Frequently asked questions

AEMO Theoretical Energy Schedule FAQ v1.2

File exchange csv templates

bilateral

resources_participant_details

resources_facility_details

stem_demand_portfolio_curve

resources_synchronisation

stem_ancillary_service

stem_facility_detail

stem_supply_portfolio_curve

balancingvariation

loadfollowingvariation

balancingstanding

loadfollowingstanding