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Market Notice Archives

ERCOT sends Market Notices to publicly subscribed email distribution lists as required in the protocols and other binding documents for scheduled releases, outages, business process failures, and other general information.

This section contains a three year archive of Market Notices.  Archive searches may be performed by Category, Date Range, and Keywords, or a combination of these criteria. For Market Notices older than three years, select the mailing list you are interested in from Market Notice Email Distribution Lists.

Search Market Notices

Search for Market Notices within the past three years.

Date   Subject  
01/07/2026 M-A121225-04 Update: Software Issue Identified Impacting Ancillary Service Trades
01/07/2026 M-A123025-03 Planned system maintenance with impacted services
01/07/2026 M-B122925-03 Planned system maintenance with impacted services
01/07/2026 R-A120325-02 Reminder: Retail Market Qualification Testing (Flight 0226) begins February 3, 2026, with an application processing deadline of January 14, 2026, and a registration deadline of January 28, 2026.
01/06/2026 M-B121825-02 Reminder: Upgrade to the email subscription service, LISTSERV. Action required 
01/06/2026 R-A123125-02 Planned Maintenance Outage - Retail
01/05/2026 R-A010526-01 Request that all Market Participants and MISPs update their Production Specifications and Contacts in FlighTrak as necessary
01/05/2026 M-A123025-02 Planned system maintenance with impacted services
01/05/2026 M-B122925-02 Planned system maintenance with impacted services
01/02/2026 M-A121225-03 Update: Software Issue Identified Impacting Ancillary Service Trades
01/02/2026 M-A010226-01 2026.FEB.Monthly.Auction
01/02/2026 W-A010225-01 Update Generic Limits identification process for Real Time Operations
12/31/2025 W-A123125-01 Change to maximum shadow prices for constraints previously determined as irresolvable by SCED
12/31/2025 M-A123125-01 2027.2nd6.AnnualAuction.Seq4
12/31/2025 R-A123125-01 Planned Maintenance Outage - Retail
12/30/2025 M-A123025-01 Planned system maintenance with impacted services
12/29/2025 M-B122925-01 Planned system maintenance with impacted services
12/23/2025 M-A122325-01 ERCOT Large Load interconnection process stakeholder engagement plan and upcoming milestones regarding development of a proposed Batch Study process framework
12/23/2025 W-B122325-01 Update to the Generic Transmission Limits (GTLs) for the Zapata - Starr area (ZAPSTR) Generic Transmission Constraint (GTC)
12/23/2025 W-A122325-01 Update Generic Limits identification process for the Kinney County Generic Transmission Constraint (GTC)
12/19/2025 M-E110525-04 RTC+B: Corrected Implementation Details of Revision Requests
12/19/2025 M-A121925-01 2026 Minimum Monthly Ancillary Service Requirements
12/19/2025 M-B121925-01 Partial Implementation Details of NPRR1182, Inclusion of Controllable Load Resources and Energy Storage Resources in the Constraint Competitiveness Test Process
12/19/2025 M-C121925-01 Implementation Details of NPRR1283, Modification of SSR Mitigation Timeline
12/19/2025 M-D121925-01 ERCOT Settlements Timeline for 2025 Holiday Period