NOTICE DATE: July 02, 2021

NOTICE TYPE: M-B070221-01 Outage - Retail/Wholesale

SHORT DESCRIPTION: Planned system maintenance with impacted services

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: July 13, 2021 09:30 – 12:00; July 14, 2021 17:00 – 20:00; July 15, 2021 10:00 – 12:00; July 15, 2021 16:30 – 18:30

LONG DESCRIPTION: ERCOT will be performing planned system maintenance of several databases and applications on July 13-15, 2021.

During the July 13, 2021 09:30 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

• Find ESIID

During the July 14, 2021 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 July 15, 2021 10:00 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

• ERCOT.com
• RIOO-RS

During the July 15, 2021 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:
• Texas Renewables – www.texasrenewables.com
• 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. ERCOT.com dashboard displays will not be populated with data during the July 14, 2021 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].

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