NOTICE DATE: April 26, 2024

NOTICE TYPE: M-B042624-01 Outage - Retail/Wholesale

SHORT DESCRIPTION: Planned system maintenance with impacted services

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: May 01, May 02, and May 06, 2024

LONG DESCRIPTION: ERCOT will be performing planned system maintenance of several databases and applications on May 01, May 02, and May 06 2024

During the May 01, 2024 16:30 – 19:30 outage window, report publishing will be unavailable, including the following:

• Report publishing to the ERCOT MIS
• Downloading of extracts and reports from the MIS and EWS

During the May 02, 2024 16:30 – 19:30 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 Data Transparency (MDT) Web Services
• Extract Subscriber
• Service Requests
• ERCOT.com

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 06, 2024 16:30 – 19:00 outage window, Market Participants may experience intermittent issues with the following services:

Components of the ERCOT Market Information System (MIS), including:

• Report Publishing to the MIS
• Downloading of extracts and reports from MIS and External Web Services (EWS)
• ERCOT.com dashboards and displays
• Market Participant Identity Management (MPIM)
• Market submissions and requests via Web Services, Market Manager, and Outage Scheduler
• Current Day Report (CDR) report publishing and downloading, which may cause the following reports to be unavailable:
• SCED and RTD Reports
• NSA Active and Inactive Constraint Reports
• State Estimator Reports
• Real-Time Dynamic Rating Data Reports
• Wind Power Production - Actual 5-Minute Averaged Values
• Solar Power Production - Actual 5-Minute Averaged Values

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 06, 2024 16:30 – 19:00 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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dg