Guides and useful information
These documents will help you become familiar with the Wholesale Electricity Market (WEM).
Wholesale Electricity Market Design
User guides
Current versions
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26/06/2025
AEMO Commissioning Test Plan User Guide v3
Effective June 2025
1.14 MB -
26/06/2025
Outage Intention Plans Market Participant User Guide v2
Effective June 2025
924.67 KB -
26/06/2025
AEMO – Reserve Capacity Mechanism User Guide – Version 4.1
Effective March 2025
2.13 MB -
21/01/2025
WEMS MPI User Guide: Outage Management System V 1.3
Effective January 2025
1.24 MB -
10/12/2024
WEMS Network Operator User Guide: Commissioning Test Plan System
Effective December 2024
684.22 KB -
04/12/2024
Outage Intention Plans Network Operator User Guide
Effective November 2024
1.02 MB -
04/06/2024
Real-time Market Submissions API Reference User Guide - Draft 0.2
Effective March 2023
604.07 KB -
04/06/2024
AEMO - WEMS Real-Time Market Submission Specifications (Draft 1.1)
Effective April 2023
1.96 MB -
08/05/2024
WEMS Registration Technical Guide v4.2 (Clean)
Effective May 2024
1.43 MB -
08/05/2024
WEMS Registration Technical Guide v4.2 (Tracked changes no comments)
Effective May 2024
1.63 MB -
02/01/2024
AEMO - Prudential and Settlements Services User Guide - Version 1.1
Effective January 2024
1.87 MB -
10/01/2024
Summary of APIM API Endpoints in the WEM
Effective January 2024
508.69 KB -
23/08/2023
WEMS MPI User Management User Guide - Version 1
Effective August 2023
714.81 KB -
23/08/2023
Generator Performance Standards User Guide - Version 1
Effective August 2023
1.39 MB -
23/08/2023
Real-Time Market Submissions User Guide - Version 1
Effective August 2023
897.56 KB -
11/08/2023
WEMS MPI User Guide: Registration – Version 1
Effective August 2023
2.83 MB -
11/08/2023
AEMO - Short Term Energy Market User Guide - Version 1
Effective August 2023
2.29 MB
Historical versions
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10/12/2024
WEMS Market Participant User Guide: Commissioning Test Plan System
Effective December 2024
1.04 MB -
04/12/2024
Outage Intention Plans Market Participant User Guide
Effective November 2024
993.7 KB -
06/09/2024
AEMO - Reserve Capacity Mechanism User Guide - Version 3
Effective September 2024
2.25 MB -
29/02/2024
AEMO - Reserve Capacity Mechanism User Guide - Version 2
Effective February 2024
1.84 MB -
21/08/2023
AEMO Outage Management System User Guide V1.2
Effective August 2023
1.17 MB -
01/01/2023
AEMO Commissioning Test Plan User Guide Version 2
Effective July 2023
1.01 MB -
08/05/2024
WEMS Registration Technical Guide v4.1
Effective July 2023
1.13 MB -
11/08/2023
AEMO - Reserve Capacity Mechanism User Guide - Version 1
Effective August 2023
1.64 MB -
14/08/2023
AEMO - Prudential and Settlements Services User Guide - Version 1
Effective August 2023
1.92 MB -
29/05/2023
AEMO - WEMS MPI User Guide v6.23
Effective May 2023
13.62 MB -
31/03/2023
WEMS MPI User Guide v6.22
Effective April 2023
12.55 MB -
13/04/2023
Market participant administrator guide v3
302.26 KB
Guidelines
Specifications
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16/06/2022
Technical Specification: Operational Data Points for Generating Plant
523.37 KB -
24/07/2024
Technical Specification: AGC, SCADA Dispatch Instructions, and Fast Start Facility Operational Behaviour
1.22 MB -
24/05/2024
STEM & Bilateral Report and Web Services Specification v1.1
Effective 11 January 2024
773.57 KB -
27/06/2024
STEM & Bilateral Submission Specification v1.1
Effective 26 June 2024
482.52 KB -
11/01/2024
STEM & Bilateral Submission Validation v1.0
Effective 11 January 2024
350.76 KB
WEM and GBB (WA) participant support guide
Operational contingencies
Frequently asked questions
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):