*******TEXAS NODAL MARKET NOTICE******* NOTICE DATE: July 1, 2010 NOTICE TYPE: Market Trials SHORT DESCRIPTION: Full-System/Load Frequency Control (LFC) testing schedule INTENDED AUDIENCE: Nodal Accountable Executives, Nodal Transition Project Managers, Market Trial Contacts, Qualified Scheduling Entities (QSEs), QSEs with Resources and Resource Entities DAYS AFFECTED: July 1 - August 6, 2010 LONG DESCRIPTION: ERCOT is updating the Market Trials Phase 5.0 test schedule to incorporate additional Full-System/LFC tests, as follows: * Week of July 19, 2010: 5-Hour Full-System/LFC Test (July 20 - 22) * Week of August 2, 2010: 24-Hour Full-System/LFC Test (August 3 - 5) Note that in addition to these tests, other Full-System/LFC Tests will be incorporated into the Market Trials testing schedule during the months of August and September. The details for each Full-System/LFC Test window-including workshop opportunities and test timelines-will continue to be communicated via Market Notices and the regularly scheduled Friday Real-Time Market Calls as each test window draws near. The meeting details for the Friday Market calls are posted at http://www.ercot.com/committees/nodal/mt/. ACTION REQUIRED: Please advise operators and other personnel performing Zonal market activities of the upcoming tests and ensure that the necessary support staff will be available during normal business hours (08:00 to 17:00) during all days of each test week. Support staff will also need to be available during non-business hours to facilitate the 24-Hour Full-System/LFC Test. CONTACT: If you have any questions, please contact either the Market Trials team by email at [log in to unmask]<mailto:[log in to unmask]> or 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]<mailto:[log in to unmask]>. If you are receiving email from an 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<http://lists.ercot.com/>. dh