Market Alerts

Notice Date: February 25, 2026

Notice Type: M-A022526-01 Outage – Retail/Wholesale
Short Description: Planned system maintenance with impacted services

Intended Audience: ERCOT Market Participants
Days Affected: March 5, 2026, 07:00 – 19:30

Long Description: ERCOT will be performing planned system maintenance of several databases and applications on March 5, 2026.

During the March 5, 2026, 07:00 – 08:00 outage window, CRR Market User Interface (MUI) will be unavailable to CRR Account Holders and Counter-Parties.

During the March 5, 2026, 11:00 – 15:00 outage window, Market Participants may experience intermittent issues with the following services:

• Find ESIID

During the March 5, 2026, 13:30 – 15:00 outage window, Market Participants may experience intermittent issues with the following services:

• ERCOT.com
• RIOO-RS

During the March 5, 2026, 17:30 – 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 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 March 5, 2026, 16:30 – 18:00 outage window, Market Participants may experience intermittent issues with the following services:

• Market Participant Identity Manager (MPIM)
• The following ERCOT internet services:
  • Renewable Energy Credit –  https://sa.ercot.com/rec/home
  • 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 March 5, 2026, 17:30 – 19:30 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 ClientServices@ercot.com.

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dg

Source:
ERCOT Client Services <00000005442f3c73-dmarc-request@LISTS.ERCOT.COM>
TO: NOTICE_OUTAGES_RETAIL@LISTS.ERCOT.COM