HomeWholesale Electricity Market - WEM
Market Governance
Reserve Capacity
Market Rules
Market Participants
Information for Participants
Publications and Reporting
Market Data
Compliance and Audit
Market Evolution Program - MEP
Gas Information Services Project - GISP

Market Advisories

The IMO must inform Market Participants of impending situations that could impact market outcomes. It does this by issuing market advisories in the following situations:

  • Market system outages, whereby aspects of the market cannot run normally due to systems failures; and
  • Notification of suspension of any aspect of the market.

These advisories include information on how Market Participants should respond to the situation. Note that advisories related to dispatch are called dispatch advisories, and are issued by System Management.

Market Advisory TypeDate of ReleaseTime of Release WST/WDSTExpected DurationDescription/Link
Extended date and time Individual Reserve Capacity Requirements 09/09/201104:47 PMNotification
Publish Load Forecast Delay15/05/201108:17 AMNotification
Stem Window Delay14/05/201108:50 AMNotification
Stem Window Delay14/04/201108:55 AM W.S.Tsee situation detailsNotification
Stem Window Delay14/04/201108:55 AM W.S.Tsee situation detailsNotification
Market Message: WEMS Database Upgrade05/04/201117:00 PM W.S.T5 HoursNotification
Stem Window Delay25/01/201110:55 AM W.S.T1 HourNotification
Stem Window Delay25/01/201111:10 AM W.S.T1.6 HoursNotification
Stem Window Delay25/01/201110:30 AM W.S.T20 MinsNotification
Stem Window Delay22/11/201009:30 AM W.S.T0.15 HoursNotification
Stem Window Delay25/09/201009:38 AM W.S.T0.30 HoursNotification
Stem Window Delay14/06/201009:10 AM W.S.T0.25 HoursNotification
Stem Window Delay07/06/201010:10 AM W.S.T1 HourNotification
Stem Window Delay03/06/201009:45 AM W.S.Tsee situation detailsNotification
Stem Window Delay – Window Opening Times 03/06/201010:55 AM W.S.T0.75 HoursNotification
Market System Outage02/06/201004:30 PM W.S.Tsee situation detailsNotification
Stem Result Delay – Window Opening Times 14/05/201011:50 AM W.S.T1.5 HoursNotification
STEM Window Delay14/05/201010.30 AM W.S.Tsee situation detailsNotification
Resource Plan Window Delay12/05/201011:24:00AM W.S.Tsee situation detailsNotification
Stem Window Delay – Window Opening Times 31/03/20109:17 AM W.S.Tsee situation detailsNotification
Stem Window Delay31/03/20109:00 AM W.S.Tsee situation detailsNotification
December 2009 First Run Settlement08/02/201016:23 W.S.T see situation detailsNotification
STEM Window Closure Delay02/02/201009:23 AMsee situation detailsNotification
System Fail Over14/12/200912:40 PM W.S.T see situation detailsNotification
System Fail Over14/11/200910:42 AM W.S.Tsee situation detailsNotification
Email Outage13/11/20092:15 PMsee situation detailsNotification
Market System Outage13/11/20092:10 PMsee situation detailsNotification
STEM Window Delay - Resolved18/10/200910:25 AMsee situation detailsNotification
STEM Window Delay18/10/200908:55 AMsee situation detailsNotification
Invoices – July 2009 First Run09/09/20099:50 AMsee situation detailsNotification
Market System Outage10/08/200912:00 PM see situation detailsNotification
IMO Systems Failure - Rectified06/08/200912:30 PMsee situation detailsNotification
IMO Systems Failure06/08/200910:20 AMsee situation detailsNotification
IMO Systems Failure05/08/200910:20 AMsee situation detailsNotification
IMO Systems Failure – Rectified 05/08/200911:00 AMsee situation detailsNotification
Republished Dispatch Merit Order and Resource Plan data 13/07/200907:33 PMNotification
Delay in opening Resource Plan window 13/07/200912:00 PMNotification
Market System Outage08/05/200902:45 PMsee situation detailsNotification
Email Outage27/03/200909:55 AM12 HoursNotification
STEM Market Suspension23/02/200908:15 AMTrading dayNotification
Stem Window Delay – Window Opening Times 14/02/200909:15 AMNotification
Stem Window Delay14/02/200908:42 AMNotification
Scheduled Maintenance13/02/200903:15 PMsee situation detailsNotification
Market System Outage 05/02/200903:15 PMNotification
Stem Window Delay – Window is now Open 31/10/200809:40 AMNotification
Stem Window Delay31/10/200809:03 AMNotification
Market System Outage 07/10/200811:15 AM3 HoursNotification
Stem Window Delay - Update22/09/200809:40 AMNotification
Stem Window Delay22/09/200809:05 AMNotification
Stem Window Delay – Window is now Open22/09/200809:50 AMNotification
Market System Outage 31/08/2008 10:15 AM6 HoursNotification
Market System Outage 01/08/2008 02:15 PM1-2 HourNotification
Market System Outage 20/06/2008 02:10 PM1 HourNotification
Market System Outage 17/05/2008 10:40 AM Notification
Market System Outage 08/04/2008 03:00 PM Notification
Market System Outage 08/04/2008 02:00 PM 1 HourNotification
Market System Outage 18/03/2008 08:05 AM 8.5 HoursNotification
Market System Outage01/03/2008 10:55 AM 05 MinutesNotification
Market System Outage01/03/2008 09:20 AM 30 MinutesNotification
Market System Outage01/03/2008 07:30 AM TBANotification
Market System Outage16/02/2008 07:53 AM UnscheduledNotification
Market System Outage16/02/2008 08:57 AM UnscheduledNotification
Market System Outage18/01/2008 01:15 PM 2 HoursNotification
Market System Outage19/12/200706:10 PM 1 HourNotification
Market System Outage 27/11/0715:00 AM approx 10 Notification
Market System Outage 27/11/0713:50 PM approx 10 Notification
Market System Outage 22/11/200712:05 AMNotification
Market System Outage - Rectified 22/11/200712:45 AMNotification
Market System Outage - Rectified 19/11/200711:55 AMNotification
Market System Outage 19/11/200711:40 AMNotification
Market System Outage - Rectified 12/11/200707:50 AMNotification
Market System Outage 12/11/200707:45 AMNotification
Market System Outage 08/08/200711:05 AM TBANotification
Market System Outage 08/08/200711:40 AMNotification
Market System Outage 25/07/200704:00 PM see situation detailsNotification
Market System Outage 07/07/200711:50 PMNotification
Market System Outage 06/07/20078:15 AMNotification
Market System Outage 06/07/20071:40 PMNotification
System Outage - RECTIFIED 15/06/20073:45PMNotification
Market System Outage 15/06/20071:30 PMNotification
STEM Market Suspension 01/06/200710:20 AMNotification
Market System Outage 31/05/200708:20 AM Approx 20 Notification
Market System Outage 31/05/200708:30 AM N/ANotification
Scheduled Market System Outage 08/05/20072.40 PMNotification
Market System Outage 07/05/200711:20 PM 10 Notification
Scheduled Market System Outage 03/05/20071.20 PMNotification
Market System Outage 09/04/20078:50 AM N/ANotification
Delay in Closing STEM Window 06/03/200710:00 AMNotification
Market System Outage 14/02/20076:25 PM To be advisedNotification
Market System Outage 14/02/20075:55 PM 0.5 HourNotification
Market System Outage 14/02/20074:20 PM 3 Hours RecurringNotification
STEM Window is now Open 13/02/20079:20 AMNotification
Delay in Opening STEM window 13/02/20079:05 AMNotification
STEM Market Suspension 10/02/200710:20 AM Trading dayNotification
WEMS Change Notification 07/02/20079.15 AMNotification
Market System Outage - Update 06/02/20078:30 AMNotification
Market System Outage 06/02/20077:50 AM Unknown (approx. 1 Hour)Notification
Market System Outage 02/02/20075:10 PM 1.0 HoursNotification
Market System Outage 02/02/200710:45 AM 6.0 HoursNotification
Market System Outage 31/01/20077:10 PM 1.0 HoursNotification
Market System Outage 29/01/20074:00 PM 45 Notification
Market System Outage - Update 28/01/20072:20 PMNotification
Market Systems Active 28/01/20076:45 PMNotification
Market System Outage 28/01/200712:00 PM 1.0 HourNotification
WEMS Change Notification 25/01/20078:21 AMNotification
Market System Outage 24/01/20073:00 PM 3.0 HoursNotification
Market Systems Active 24/01/20079:10 PMNotification
Market System Outage 22/01/20075:30 PM 3.0 HourNotification
Market System Outage 11/01/20074:55 PM 1.0 HourNotification
Market System Outage 05/01/20074:35 PM 1.0 HourNotification
Balancing Prices Republished 03/01/20079:45 AMNotification
Market System Outage 03/01/20074:45 PM 1.0 HoursNotification
Market System Outage 02/01/20074:45 PM 30 Notification
Market System Outage 20/12/20069:30 AM unscheduledNotification
Market System Outage 20/12/20064:00 PM 1.0 hoursNotification
Market System Outage 13/12/20065:30 AM 3.5 hoursNotification
Market System Outage 08/12/20065:00 PM 2.0 hoursNotification
Market System Outage / Report Change 08/12/20063.06 PM 2.0 hoursNotification
Market System Outage 07/12/20062:20 PM 2 hoursNotification
Market System Outage 30/11/200610:00 AM 2.0 HoursNotification
Market System Outage 14/11/20065:25 PM 8.25 HoursNotification
Market System Outage 2/11/20064:30 PM 2.0 hoursNotification
Market System Outage 30/10/20064:45 PM 3 hoursNotification
Market System Outage 22/10/20068:59 AM 22 minutesNotification
Market System Outage 05/10/20066:07 PM 2 hoursNotification
Market System Outage Complete 04/10/20065:50 PMNotification
Market System Outage 04/10/20064:52 PM 30 minutesNotification
STEM Market Suspension 27/09/200611:12 AM Trading dayNotification
STEM Market Suspension 26/09/200610:20 AM Trading DayNotification
Market System Outage 25/09/200609:13 AMNotification