NOTICE DATE: May 4, 2022

NOTICE TYPE: M-D042922-02 Outage - Retail/Wholesale

SHORT DESCRIPTION: Planned system maintenance with impacted services

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: May 10, 2022 09:30 – 12:00; May 11, 2022 17:00 – 20:00; May 12, 2022 13:30 – 15:30; May 12, 2022 16:30 – 18:30

LONG DESCRIPTION: ERCOT will be performing planned system maintenance of several databases and applications on May 10-May 12, 2022.

During the May 10, 2022 09:30 – 12:00 outage window, Market Participants may experience intermittent issues with the following services:

• Find ESIID

During the May 11, 2022 17:00 – 20:00 outage window, all services available through the Market Information System (MIS) will be unavailable, including the following:

• 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 12, 2022 13:30 – 15:30 outage window, Market Participants may experience intermittent issues with the following services:

• ERCOT.com
• RIOO-RS

During the May 12, 2022 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/
• 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 May 11, 2022 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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