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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15/04/2026
RSA Quick Reference v1.0
Effective April 2026
225.43 KB -
10/03/2026
Registration v1.1
Effective March 2026
2.83 MB -
10/03/2026
Registration Technical Data v4.3 (Tracked Changes)
Effective March 2026
1.62 MB -
10/03/2026
Registration Technical Data v4.3 (Clean)
Effective March 2026
1.51 MB -
10/03/2026
Reserve Capacity Mechanism v4.2
Effective March 2026
3.21 MB -
26/06/2025
Commissioning Test Plan v3.0
Effective June 2025
1.14 MB -
26/06/2025
Outage Intention Plans v2.0
Effective June 2025
924.67 KB -
21/01/2025
Outage Management System v1.3
Effective January 2025
1.24 MB -
10/12/2024
Network Operator: Commissioning Test Plan System v1.0
Effective December 2024
684.22 KB -
04/12/2024
Outage Intention Plans: Network Operator v1.0
Effective November 2024
1.02 MB -
04/06/2024
Real-time Market Submissions API Support Reference Draft v0.2
Effective March 2023
604.07 KB -
04/06/2024
Real-Time Market Submission Specifications Draft v1.1
Effective April 2023
1.96 MB -
02/01/2024
Prudential and Settlements Service v1.1
Effective January 2024
1.87 MB -
10/01/2024
Summary of APIM API Endpoints v2.0
Effective January 2024
508.69 KB -
23/08/2023
MPI User Management v1.0
Effective August 2023
714.81 KB -
23/08/2023
Generator Performance Standards v1.0
Effective August 2023
1.39 MB -
23/08/2023
Real-Time Market Submissions v1.0
Effective August 2023
897.56 KB -
11/08/2023
Short Term Energy Market v1.0
Effective August 2023
2.29 MB
Historical versions
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11/08/2023
MPI Registration v1.0
Effective August 2023
2.83 MB -
08/05/2024
Registration Technical Data v4.2 (Clean)
Effective May 2024
1.43 MB -
08/05/2024
Registration Technical Data v4.2 (Tracked changes)
Effective May 2024
1.63 MB -
10/12/2024
Market Participant: Commissioning Test Plan System v3.0
Effective December 2024
1.04 MB -
04/12/2024
Outage Intention Plans: Market Participant v1.0
Effective November 2024
993.7 KB -
26/06/2025
Reserve Capacity Mechanism v4.1
Effective March 2025
2.13 MB -
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):