*******TEXAS NODAL MARKET NOTICE*******

NOTICE DATE:  August 20, 2010

NOTICE TYPE:  Market Trials

SHORT DESCRIPTION:  Network Operations Model Change Schedule is now posted to ERCOT.com

INTENDED AUDIENCE:  Nodal Accountable Executives, Nodal Transition Project Managers, Market Trial Contacts

DAY AFFECTED:  August 20, 2010

LONG DESCRIPTION:  In preparation for the September 1, 2010, activation of Nodal Protocol 3.10, the schedule for Network Operations Model (NOM) changes is now posted to ERCOT.com, replacing the previous Operational Systems Change Schedule.

The schedule represents planned updates to the ERCOT NOM in accordance with Nodal Protocol Section 3.10.1. The schedule applies to all network topology, registered Resource parameters and telemetry changes submitted by Transmission Service Providers, Resource Entities and Qualified Scheduling Entities. Additional information on this process is available in the “Modeling Expectations” document posted to ERCOT.com.

Network Operations Model Change Schedule:
http://www.ercot.com/gridinfo/transmission/opsys-change-schedule

Modeling Expectations:
http://nodal.ercot.com/readiness/golive/kd/Modeling%20Expectations%204%2011.doc

CONTACT:  If you have any questions, please forward them to [log in to unmask] or 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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