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ERCOT Client Services <[log in to unmask]>
Mon, 20 Feb 2017 18:00:30 +0000
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NOTICE DATE:  February 20, 2017

NOTICE TYPE:  M-B021717-02 Outage - Wholesale

SHORT DESCRIPTION: Updated Date and Times - Planned system maintenance with impacted services


DAY AFFECTED:  February 20, 2017, 16:30 - 18:30

LONG DESCRIPTION:  The planned system maintenance originally scheduled for February 22, 2017 has been rescheduled. ERCOT will be now be performing planned system maintenance of several source databases and applications on February 20, 2017, within a maintenance window of 16:30 - 18:30. During this system maintenance, market submissions will be unavailable for approximately 30 minutes and real-time communications will be unavailable for approximately five minutes. All systems should re-establish communications automatically.

During the maintenance period, Market Participants may experience intermittent issues with the following services:

********* Market submissions and requests via WebServices, Market Manager and Outage Scheduler

********* Report publishing to the ERCOT Market Information System (MIS)

********* Downloading of extracts and reports from MIS and WebServices

********* Net Dependable Capability and Reactive Capability (NDCRC).

Note that the outage is scheduled to begin at approximately 16:30; however, this start time may be delayed depending on the current system conditions. A Hotline call will be made to Qualified Scheduling Entities (QSEs) with Resources and Transmission Operators (TOs) to announce the start of the outage, and another Hotline call will be made at the completion of the outage.

ACTION REQUIRED:  Qualified Scheduling Entities (QSEs) with Resources may be instructed to follow Emergency Base Points during the outage. QSEs and Transmission Service Providers (TSPs) will need to refrain from making submissions in Market Manager and Outage Scheduler during the outage period as the submissions will not be accepted.

ADDITIONAL INFORMATION:  Note that the Market Information System (MIS) and Current Day Reports (CDR) system will be impacted. Reports will be rerun and reposted as applicable. The MIS Dashboards and price displays will not be populated with data during this timeframe.

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]<mailto:[log in to unmask]>.

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