NOTICE DATE:  May 8, 2019

NOTICE TYPE:  M-A050819-01 Outage - Wholesale

SHORT DESCRIPTION:  Planned system maintenance with impacted services

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  May 13, 2019 15:30 - 17:30 

LONG DESCRIPTION:  ERCOT will be performing planned system maintenance of several source databases and applications on May 13, 2019, within a maintenance window of 15:30 - 17:30. 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 15:30; 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 ERCOT.com 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].

If you are receiving email from a public 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

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NOTICE DATE: May 10, 2019

NOTICE TYPE: M-A050319-02 Outage

SHORT DESCRIPTION:  Reminder - Planned Maintenance Outage

INTENDED AUDIENCE:  All Market Participants

DAY AFFECTED: Sunday, May 12, 2019 from 06:00 to 21:00

LONG DESCRIPTION: ERCOT will be performing planned maintenance on May 12, 2019, from 06:00 to 21:00.  During the outage the following functions will be affected:

• Market Participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT during the outage. This includes all retail transactions.
• 867 transactions will NOT be forwarded during the outage
• 997 Functional Acknowledgements will NOT be sent during the outage
• MarkeTrak will be unavailable for the duration of the outage
• Retail Application components of the MIS and the Retail API will be unavailable
• Retail Reports and Extracts may be impacted during the outage timeframe
• eService application will be unavailable on the Market Information System (MIS)
• Find ESIID and Find Transaction will be unavailable

ACTION REQUIRED: During the outage ERCOT will change the public IP addresses of some market facing services.  This change could impact market participants’ ability to access those services, or receive responses from them.

NOTE: All Market Participants that transmit files via NAESB must ensure their systems can send and receive transactions from the new IP addresses.

The specific changes to the services are listed below:

NAESB URL

https://naesb.ercot.com:7403/ipnet/naesb - no change

IP Configurations

Former Public IP Addresses

Outbound from ERCOT - 66.128.17.86

Inbound to ERCOT (naesb.ercot.com) - 66.128.17.102

Port (no change) - 7403

New Public IP Addresses

Outbound from ERCOT - 66.128.16.125

Inbound to ERCOT (naesb.ercot.com) - 66.128.16.102

Port (no change) - 7403

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 a public 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

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NOTICE DATE:  May 10, 2019

NOTICE TYPE:  M-A051019-01 Outage – Retail/Wholesale

SHORT DESCRIPTION:  Planned system maintenance with impacted services

INTENDED AUDIENCE:  ERCOT Market Participants

DAYS AFFECTED: May 15, 2019 09:30 - 12:00, May 15, 2019 17:00 - 20:00, May 16, 2019 10:00 - 12:00, May 16, 2019 16:30 - 18:30

LONG DESCRIPTION:  ERCOT will be performing planned system maintenance of several databases and applications on May 15 - 16, 2019.

During the May 15, 2019 09:30 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

• ·         Find ESIID

During the May 15, 2019 17:00 – 20:00 outage window, all services available through the Market Information System (MIS) will be unavailable, including the following:

• ·         Market submissions and requests via External Web Services (EWS), Market Manager and Outage Scheduler

• ·         Report publishing to the ERCOT MIS

• ·         Downloading of extracts and reports from the MIS and EWS

• ·         Net Dependable Capability and Reactive Capability (NDCRC)

• ·         Congestion Revenue Right (CRR) Market User Interface

• ·         Find ESIID and Find Transaction

• ·         Market Participant Identity Manager (MPIM)

• ·         Market Data Transparency (MDT) Web Services

• ·         Extract Subscriber

• ·         Service Requests

During this outage window, please use the following URLs to directly access the Market Manager, CRR Market User Interface, and Outage Scheduler: 

• https://mis.ercot.com/mmsui/mmsui/displayTradesLanding.action
• https://mis.ercot.com/mui-ercot-ihedge/
• https://mis.ercot.com/osrui/osrui/Summary.action

During the May 16, 2019 10:00 – 12:00 outage window, Market Participants may experience intermittent issues with the following service:

• ·         ERCOT.com

During the May 16, 2019 16:30 – 18:30 outage window, Market Participants may experience intermittent issues with the following services:

• ·         Market Participant Identity Manager (MPIM)

• ·         The following ERCOT internet services:

o   Texas Renewables – www.texasrenewables.com

o   Retail Testing Website - etod.ercot.com

o   ERCOT Interconnection Services (GINR) -  https://sa.ercot.com/ginr/  

•          Market Data Transparency (MDT) Web Services

• ·         Extract Subscriber

• ·         Net Dependable Capability and Reactive Capability (NDCRC)

Note that the outage start times may be delayed depending on the current system conditions.

ADDITIONAL INFORMATION:  Reports will be rerun and reposted as applicable. The MIS Dashboards and ERCOT.com price displays will not be populated with data during the May 15, 2019 17:00 – 20:00 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].

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

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