IT change and release management
This page lists schedules for IT changes and releases across AEMO’s electricity and gas market systems. All change management is governed under the IT Change Management Policy and Procedure.
IT changes
AEMO’s IT change schedule informs AEMO participants in advance about IT changes and provides a consolidated view of the changes planned. This is another step towards standardising the maintenance and outage windows for AEMO’s market-facing systems, helping to better manage any impact as well as overall planning of changes and releases.
Forward schedule of IT changes
The fortnightly forward schedule of IT changes lists all planned maintenance, as well as the status history of each of AEMO’s business services.
Outage and maintenance windows
The IT outage and maintenance windows (change windows) for major system changes outline specific timeframes when IT changes will occur.
Market Systems User Group (MSUG) Meeting
Technical Specifications
Technical specifications provide IT system and application information affecting participants as a result of a rule change or a project. They communicate the design and implementation timeline so participants can plan their IT resources to update their own systems.
National Electricity (NEM) and Gas Market Technical Specifications
Wholesale Electricity Market (WEM)
Environments
The table below details the release and build which is currently running in each environment. The snapshot date indicates the date at which the last snapshot of Production market data was taken for the environment, as applicable.
Environment | Version | Snapshot date | Link |
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Production | WEMS 4.1 (Build 4.1-1573-14) RCM version 3.1 (Build 3.1-122) WEM PaSS 3.5 (Build 3.5-838-2) |
02/07/2024 |
https://wems.aemo.com.au/ |
Market Trial | WEMS 4.1 (Build 4.1-1573-14) RCM version 3.1 (Build 3.1-122) WEM PaSS 3.6 (Build 3.6-839-3) |
02/07/2024 | https://wems-mkt.aemo.com.au/ |
Market Trial environments can simulate the operation of the WEM, but actual market outcomes may vary in these environments due to testing activities of Market Participants and AEMO, differences in software versions, and the time since the last snapshot.
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Releases (2024-2023)
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13/11/2024
WEMDE 3.1.0 Release Notes
657.69 KB -
31/10/2024
WEM PaSS 3.7 Release Notes
507.77 KB -
14/10/2024
WEM PaSS 3.6 Release Notes
488.82 KB -
08/10/2024
WEMDEUI 2.2 Release Notes v1.0
432.04 KB -
11/09/2024
WEM PaSS 3.5 Release Notes
465.6 KB -
12/09/2024
RCM 3.1 Release Notes
617.59 KB -
13/08/2024
WEMDE 3.0.3 Release Notes v1.0
548.57 KB -
17/06/2024
WEM PaSS 3.4 Release Notes
441.73 KB -
27/05/2024
RTMS Version 2.1.330 Release Notes (External) v1.1
424.87 KB -
13/05/2024
WEMDE 3.0.2 Release Notes v1.0
426.64 KB -
03/05/2024
WEMDE 3.0.1 Release Notes v1.0
442.74 KB -
26/04/2024
WEMDE 3.0 Release Notes v1.1
663.68 KB -
29/02/2024
RCM 2.2 release notes
521.08 KB -
14/02/2024
WEMDE 2.0.0 Release Notes v1.0
563.01 KB
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Releases (2023-2022)
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20/12/2023
WEM PaSS 3.1 Release Notes
463.85 KB -
13/10/2023
Settlements Reform Release 1 Release Notes
595.03 KB -
01/08/2023
OMS 5.0 Release Notes
234.57 KB -
01/08/2023
Registration 2.0 Release Notes
565.85 KB -
29/05/2023
WEMS 4.0 Release Notes
954.91 KB -
15/03/2023
RCM 1.30 Release Notes
474.01 KB -
05/01/2023
WEM PaSS 2.1 Release Notes
388.6 KB
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Releases (2022-2021)
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Releases (2021-2020)
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24/11/2021
WEMS 3.44 and WEM PaSS 1.9 patch Release Notes
406.88 KB -
09/11/2021
RCM 1.24 Release Notes
1.05 MB -
24/11/2021
WEM PaSS 1.9 WEMS 3.43 and RCM 1.23 Release Notes
399.94 KB -
24/11/2021
WEM PaSS 1.8 WEMS 3.42 and RCM 1.22 Release Notes
1.27 MB -
16/07/2021
WEM PaSS 1.7 WEMS 3.40 and RCM 1.21 Release Notes
1.01 MB -
24/06/2021
GPS System 1.0 and WEMS 3.41 Release Notes
519.27 KB -
24/06/2021
WEMS 3.39 and RCM 1.20 Release Notes
708.42 KB -
24/11/2021
WEMS 3.38 and Prudential 1.6 Release Notes
275.44 KB -
18/02/2021
WEMS Prudential Service 1.5 Release Notes
374.79 KB -
25/11/2020
WEMS 3.37 and RCM 1.19 Release Notes
327.44 KB -
28/09/2020
RCM 1.18 Release Notes
331.19 KB -
26/08/2020
WEMS 3.36 Release Notes
392.5 KB -
18/08/2020
WEMS Prudential Services 1.4 Release Notes
945.2 KB -
22/06/2020
WEMS Prudential Services 1.3 Release Notes
669.81 KB -
28/04/2020
WEMS 3.35 Release Notes
437.96 KB -
15/01/2020
WEMS 3.34 and RCM 1.14 Release Notes
465.47 KB
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Releases (2019-2018)
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03/10/2019
WEMS 3.33 and RCM 1.13 Release Notes
415.1 KB -
24/06/2019
WEMS 3.32 and RCM 1.12 Release Notes
463.04 KB -
07/06/2019
WEMS 3.31 Release Notes
411.17 KB -
25/03/2019
WEMS 3.30 and RCM 1.11 Release Notes
698.28 KB -
18/03/2019
WEMS 3.29 Release Notes
321.89 KB -
13/11/2018
WEMS 3.28 and RCM 1.10 Release Notes
811.84 KB -
17/09/2018
WEMS 3.27 and RCM 1.9 Release Notes
784.12 KB -
05/06/2018
RCM 1.8 Release Notes
753.95 KB -
07/05/2018
WEMS 3.26 and RCM 1.7 Release Notes
620.11 KB -
29/03/2018
WEMS 3.25 and RCM 1.6 Release Notes
992.08 KB -
02/02/2018
WEMS 3.24 and RCM 1.5 Release Notes
584.07 KB
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Releases (2017-2016)
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13/11/2017
WEMS 3.23 and RCM 1.4 Release Notes
675.62 KB -
09/10/2017
WEMS 3.22 and RCM 1.3 Release Notes
575.32 KB -
29/09/2017
WEMS 3.22 and RCM 1.2 Release Notes
863.93 KB -
23/08/2017
WEMS 3.21 and RCM 1.1 Release Notes
653.37 KB -
11/07/2017
WEMS 3.21 Release Notes
1004.67 KB -
16/05/2017
WEMS 3.19 Patch 1 Release Notes
268.48 KB -
12/04/2017
WEMS 3.19 Release Notes
649.86 KB -
28/09/2016
WEMS 3.18 Release Notes
298.03 KB -
04/08/2016
WEMS 3.17 Release Notes
432.27 KB -
25/07/2016
WEMS 3.16 Release Notes
535.04 KB -
08/07/2016
WEMS 3.14 Release Notes
500.93 KB -
08/07/2016
WEMS 3.13.1 Release Notes
1.32 MB
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Releases (2015-2014)
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23/11/2015
WEMS 3.13 Release Notes
861.65 KB -
13/10/2015
WEMS 3.12 Patch 1 Release Notes
522.65 KB -
21/09/2015
WEMS 3.12 Release Notes
1.18 MB -
10/07/2015
WEMS 3.11 Patch 4 Release Notes
426.46 KB -
14/04/2015
WEMS 3.11 Patch 3 Release Notes
774.52 KB -
06/03/2015
WEMS 3.11 Patch 2 Release Notes
771.54 KB -
19/01/2015
WEMS 3.11 Patch 1 Release Notes
778.8 KB -
10/12/2014
WEMS 3.11 Release Notes
1.07 MB -
08/08/2014
WEMS 3.10 Patch 1 Release Notes
601.54 KB -
11/06/2014
WEMS 3.10 Release Notes
888.45 KB
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Gas markets and systems
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Gas Data Model
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Gas Bulletin Board (GBB)
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31/08/2023
Gas BB Technical Specification - June 2023
937.16 KB -
28/09/2018
GBB data model QRG
430.59 KB -
03/09/2018
GBB – Release FAQ – September 2018
669.81 KB -
18/11/2016
GBB release schedule and technical specification – 938A – October 2016
1.24 MB -
07/08/2018
GBB release schedule and technical specification – September 2018
1.58 MB
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WA Gas Bulletin Board (WA GBB)
Release notes
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24/03/2023
GBB 1.20 Release Notes
558.6 KB -
24/01/2023
GBB 1.19 Release Notes
572.69 KB -
14/11/2022
GBB 1.18 Release Notes
657.58 KB -
15/09/2021
GBB 1.17 Release Notes
322.44 KB -
17/11/2020
GBB 1.16 Release Notes
364.97 KB -
17/06/2020
GBB 1.15 Release Notes
253.96 KB -
19/02/2020
GBB 1.14 Release Notes
525.45 KB -
28/08/2019
GBB 1.13 Release Notes
300.11 KB -
17/04/2019
GBB 1.12 Release Notes
315 KB -
19/09/2018
GBB 1.11 Release Notes
633.16 KB -
16/05/2018
GBB 1.10 Release Notes
282.33 KB -
15/11/2017
GBB 1.9 Release Notes
652.75 KB -
07/11/2016
GBB 1.8 Release Notes
300.28 KB -
15/06/2016
GBB 1.7 Release Notes
286.42 KB -
30/03/2016
GBB 1.6.1 Release Notes
1.43 MB -
29/11/2015
GBB 1.6 AEMO Patch Release Notes
926.74 KB -
23/10/2015
GBB 1.5 Patch 1 Release Notes
503.1 KB -
21/10/2015
GBB 1.5 Release Notes
725.43 KB
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Declared Wholesale Gas Market (DWGM)
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Short Term Trading Market (STTM)
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Gas Supply Hub (GSH)
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Pipeline Capacity Trading (PCT)
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Gas Full Retail Contestability (FRC)