NOTICE DATE:  December 16, 2013

NOTICE TYPE:  M-A121313-02 Outage - Wholesale

SHORT DESCRIPTION:  Scheduled Maintenance Outage Postponed

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED:  December 17, 2013 from 11:30 – 12:30

LONG DESCRIPTION:  ERCOT has postponed the maintenance outage originally scheduled on December 16, 2013 from 16:00 – 17:00.

ERCOT will now be performing maintenance on December 17, 2013 from 11:30 – 12:30.

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NOTICE DATE:  December 13, 2013

NOTICE TYPE:  M-A121313-01 Outage - Wholesale

SHORT DESCRIPTION:  Scheduled Maintenance Outage

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED: December 16, 2013 2013 from 16:00 – 17:00

LONG DESCRIPTION:  ERCOT will be performing maintenance on December 16, 2013 from 16:00 – 17:00.

The following systems may experience intermittent service interruptions during the maintenance period:

• Market Participant notifications
• Outage Scheduler User Interface

o During this outage, please use https://mis.ercot.com/osrui/osrui/Summary.action to directly access the Outage Scheduler

• Market Management System User Interface

o During this outage, please use https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action to directly access the Market Manager

• Market Participant Identity Management (MPIM)
• Components of the ERCOT Market Information System (MIS) including:

o Report publishing to the MIS

o Current Day Reports (CDRs) without retry functionality may not be rerun for the missed postings during the outage

o MIS and ERCOT.com dashboards and search functionality

• Components of the External Web Services (EWS)

Information on upcoming releases can be found on the ERCOT Multi Year Project Priority List (PPL).

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask].

If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

sa