NOTICE DATE: October 10 , 2024

NOTICE TYPE: R-A101024-01 Outage Retail/Wholesale

SHORT DESCRIPTION: Planned Maintenance Outage - Retail

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED: Saturday, November 09, 2024 08:00 through Sunday, November 10, 2024 23:59

LONG DESCRIPTION: ERCOT will be performing planned maintenance on Saturday, November 09, 2024 08:00 through Sunday, November 10, 2024 23:59. The details for the Market Shutdown for Texas SET Version 5.0 migration may be referenced in the Texas SET Version 5.0 Production Implementation Plan posted on the Market Coordination Team (MCT) Webpage here. Also included in the Implementation Plan, as well as below, is the Market conference call timeline. During the outage the following functions will be affected:

• Market Participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT during the outage. This includes all retail transactions.
• 867 transactions will NOT be forwarded during the outage.
• 997 Functional Acknowledgements will NOT be sent during the outage.
• MarkeTrak will be unavailable for the duration of the outage.
• Retail Application components of the MIS and the Retail API will be unavailable.
• Retail Reports and Extracts may be impacted during the outage timeframe.
• eService application will be unavailable on the Market Information System (MIS).
• Find ESIID and Find Transaction will be unavailable.
• The ListServ GUI may be unavailable and emails sent to the distribution lists could be delayed.

Please reference the Implementation Plan for complete list of shutdown details.

12:00 PM CPT Friday, November 8, 2024

• CRs suspend sending 814 transactions to ERCOT (both EDI and through Retail MIS)

1:00 PM CPT Friday, November 8, 2024

• TDSPs suspend sending 814 response transactions
• TDSPs log MarkeTrak Issue with ERCOT for Initial County Load file

5:00 AM CPT Saturday, November 9, 2024

• TDSPs suspend 867s

6:00 AM CPT Saturday, November 9, 2024

• TDSPs suspend LSE Files to ERCOT
• TDSPs suspend 814_20 transactions to ERCOT
• ALL MPs suspend 997s

8:00 AM CPT Saturday, November 9, 2024

• ERCOT shuts down inbound and outbound processing and MarkeTrak

Note: TDSPs will treat Friday, November 8th and Saturday, November 9th as a TDSP Non-Business Day. Requested dates for Move Ins, Move Outs and Switches must be for Monday, November 11, 2024 and beyond.

Market Calls: Please note the information below pertaining to specific dates and times for the Market progress calls.  These dates and times can also be found in the Implementation Plan.

• Tuesday, November 5 2:00 PM CPT
• Thursday, November 7 4:00 PM CPT
• Friday, November 8 6:00 PM CPT
• Saturday, November 9 9:00 AM CPT
• Saturday, November 9 6:00 PM CPT
• Sunday, November 10 10:00 AM CPT
• Sunday, November 10 5:00 PM CPT
• Monday, November 11 10:00 AM CPT

The Data Definition Language (DDLs) for the TDSP ESIID Extract and the Siebel Service Order Extract have been posted to the Market Coordination Team webpage in addition to the regular DDL posting locations. The DDLs will be effective upon go-live and Market Participants will see the associated changes in the posted extracts following the Texas SET 5.0 implementation.

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].

If you are receiving email from a public ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

dg