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.
Release schedules
Release schedules for AEMO markets and systems.
National Electricity Market (NEM)
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Market Settlement and Transfer Solution (MSATS)
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Energy Market Management System (EMMS)
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01/04/2020
EMMS 5MS Technical Specification - Settlements v3.01
1.54 MB -
31/01/2020
EMMS Technical Specification - 5MS - Prudentials - January 2020
1000.69 KB -
08/01/2020
EMMS Release Schedule - Data Interchange - February 2020
412.24 KB -
08/01/2020
EMMS Release FAQ - Oct 2019 - Data Model v4.29
344.97 KB -
14/10/2019
EMMS Technical Specification 5MS Reallocations December 2019
1.75 MB -
31/07/2019
Draft EMMS release schedule and technical specification – 5MS reallocations
908.81 KB -
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16/08/2019
EMMS release schedule and technical specification – SRA – October 2019
1.8 MB -
20/06/2018
EMMS Release Schedule - August 2018 - Market Participant Self Forecast
890.01 KB
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Wholesale Electricity Market (WEM)
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Environments
The table below details the Wholesale Energy Market System (WEMS) release and build that is currently running in each environment. The snapshot date indicates the date at which the last snapshot of live market data was taken for the environment, as applicable.
Environment Version Snapsnot date Link Live WEMS 3.34 (Build 3.34-1509-1); RCM 1.14 (Build 1.14-2979-1)
https://wems.aemo.com.au/ Trial WEMS 3.34 (Build 3.34-1509-1); RCM 1.14 (Build 1.14-2979-1) 19 March 2019 https://wems-mkt.aemo.com.au/ 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 (2021-2020)
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Releases (2019-2018)
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05/06/2018
RCM 1.8-2765
753.95 KB -
02/02/2018
WEMS 3.24 (Build 3.24-1356): RCM 1.5-2570
584.07 KB -
29/03/2018
WEMS 3.25 (Build 3.25-1379): RCM 1.6-2679
992.08 KB -
07/05/2018
WEMS 3.26 (Build 3.26 - 1397-1): RCM 1.7-2714
620.11 KB -
17/09/2018
WEMS 3.27 (Build 3.27-1410-1): RCM 1.9-2787-2
784.12 KB -
17/09/2018
WEMS 3.27 (Build 3.27-1410-1): RCM 1.9-2787-2
784.12 KB -
13/11/2018
WEMS 3.28 (Build 3.28-1438-2): RCM 1.10-2871-6
811.84 KB -
13/11/2018
WEMS 3.28 (Build 3.28-1438-2): RCM 1.10-2871-6
811.84 KB -
18/03/2019
WEMS 3.29 (Build 3.29-1457-2)
321.89 KB -
25/03/2019
WEMS 3.30 (Build 3.30-1459-26); RCM 1.11 (Build 1.11-2970-14)
698.28 KB -
07/06/2019
WEMS 3.31 (Build-3.31-1478-2)
411.17 KB -
24/06/2019
WEM)S 3.32 (Build 3.32-1480-1); RCM 1.12 (Build 1.12-2974-1
463.04 KB -
03/10/2019
WEMS 3.33 (Build 3.33-1497-3); RCM 1.13 (Build 1.13-2976-2)
415.1 KB
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Releases (2017-2016)
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13/11/2017
WEMS 3.23 (Build 3.23-1336-1): RCM 1.4-2366-6
675.62 KB -
09/10/2017
WEMS 3.22 (Build 3.22-1297-5): RCM 1.3-2272-1
575.32 KB -
29/09/2017
WEMS 3.22 (Build 3.22-1297-5): RCM 1.2-2176-5
863.93 KB -
03/11/2017
WEMS 3.21 (Build 3.21-1236-24): RCM 1.1-2098-8
653.37 KB -
11/07/2017
WEMS 3.21 (Build 3.21-1236-22)
1004.67 KB -
16/05/2017
WEMS 3.19 Patch 1 (Build 3.19-1192-13)
268.48 KB -
12/04/2017
WEMS 3.19 (Build 3.19-1192-10)
649.86 KB -
28/09/2016
WEMS 3.18 (Build 3.18-1183-5)
298.03 KB -
04/08/2016
WEMS 3.17 (Build 3.17-1149-11)
432.27 KB -
25/07/2016
WEMS 3.16 (Build 3.16-1105-2)
535.04 KB -
08/07/2016
WEMS 3.14 (Build 3.14-1016-3)
500.93 KB -
08/07/2016
WEMS 3.13.1 (Build 3.13.1-981-6)
1.32 MB
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Releases (2015-2014)
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08/07/2016
WEMS 3.13 (Build 3.13-981-1)
861.65 KB -
08/07/2016
WEMS 3.12 Patch 1 (Build 3.12-913-35)
522.65 KB -
08/07/2016
WEMS 3.12 (Build 3.12-913-9)
1.18 MB -
08/07/2016
WEMS 3.11 Patch 4 (Build 3.11-374-128)
426.46 KB -
08/07/2016
WEMS 3.11 Patch 3 (Build 3.11-374-116)
774.52 KB -
08/07/2016
WEMS 3.11 Patch 2 (Build 3.11-374-93)
771.54 KB -
08/07/2016
WEMS 3.11 Patch 1 (Build 3.11-374-81)
778.8 KB -
08/07/2016
WEMS 3.11 (Build 3.11-374-63)
1.07 MB -
08/07/2016
WEMS 3.10 Patch 2 (Build 3.10-99-63)
601.54 KB -
08/07/2016
WEMS 3.10 Patch 1 (Build 3.10.1)
888.45 KB
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Gas markets and systems
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Gas Bulletin Board (GBB)
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Declared Wholesale Gas Market (DWGM)
No current releases.
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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)
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Gas Day Harmonisation