NOTICE DATE: September 6, 2023

NOTICE TYPE: M-A090623-01 Operations

SHORT DESCRIPTION: EMS Upgrade Project - ICCP cutover activities schedule as ERCOT moves to new ICCP systems

INTENDED AUDIENCE: All Market Participants

DAYS AFFECTED:  September 14 - 25, 2023

LONG DESCRIPTION: As part of EMS Upgrade project, ERCOT’s ICCP (Inter-Control Center Communications Protocol) system will be transitioned to a new version between September 14, 2023 and September 25, 2023.Upgrade cutover activities will be conducted over several days in order to minimize downtimes during the transition to new ICCP systems.

ERCOT IP addresses and ICCP configuration will remain unchanged.  During each transition a short interruption of approximately 5 minutes may occur for Market Participants' redundant links, however Market Participants will not need to take any action if they experience such interruption. 

9/14 – Cutover TSP Taylor ICCP servers

Bastrop links will remain up to prevent data loss.

9/18 – Cutover TSP Bastrop ICCP servers

Taylor links will remain up to prevent data loss.

9/20 - Cutover QSE Taylor ICCP servers

Bastrop links will remain up to prevent data loss.

9/21-25 - Cutover QSE Bastrop ICCP servers

Taylor links will remain up to prevent data loss.

Additional information on the EMS upgrade project can be reviewed on the August 24, 2023 Technology Working Group (TWG) meeting page.

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