NOTICE DATE: December 7, 2010 NOTICE TYPE: W-B120710-01 Extracts - Wholesale SHORT DESCRIPTION: Some 48 Hour Disclosure Reports first run dates required by Nodal Protocols will be delayed INTENDED AUDIENCE: ERCOT Market Participants DAYS AFFECTED: December 2010 LONG DESCRIPTION: Some reports that are required by Protocol Section 3.2.5, Publication of Resource and Load Information, will have a delayed first run date until late December 2010 to resolve outstanding data anomalies and defects. The 48 Hour Disclosure Reports are all currently posted in one zip file. However, the impacted reports that will not be included in the daily zip file posting are as follows: Item EMIL ID Report Name Protocol 1 NP3-955-EX 48-hour Total Cleared Energy Bids and Energy-Only Offers by Disclosure Areas NP3.2.5(3)(d) 2 NP3-962-EX 48-hour Point-to-Point Obligation Bids NP3.2.5(3)(h) 3 NP3-963-EX 48-hour Point-to-Point Obligation Bids by Disclosure Areas of Sinks NP3.2.5(3)(h) 4 NP3-918-EX 48-hour Aggregate Supply Curve for WGR NP3.2.5(1)(b) 5 NP3-927-EX 48-hour Aggregate Supply Curve for WGR by Disclosure Areas NP3.2.5(1)(b) 6 NP3-917-EX 48-hour Aggregate Supply Curve for Non-Wind Resources NP3.2.5(1)(a) 7 NP3-923-EX 48-hour Aggregate Supply Curve for Non-Wind Resources by Disclosure Areas NP3.2.5(1)(a) 8 NP3-919-EX 48-hour Aggregate Output Schedules NP3.2.5(1)(c) 9 NP3-931-EX 48-hour Aggregate Output Schedules by Disclosure Areas NP3.2.5(1)(c) 10 NP3-924-EX 48-hour Aggregate Load Summary by Disclosure Areas NP3.2.5(1)(e) 11 NP3-920-EX 48-hour Aggregate Generation Summary NP3.2.5(1)(d) 12 NP3-935-EX 48-hour Aggregate Generation Summary by Disclosure Areas NP3.2.5(1)(d) 13 NP3-939-EX 48-hour Aggregate Energy Supply Curves (3PSO & Energy Only Offers) NP3.2.5(3)(a) 14 NP3-940-EX 48-hour Aggregate Energy Supply Curves (3PSO & Energy Only Offers) by Disclosure Areas NP3.2.5(3)(a) 15 NP3-949-EX 48-hour Aggregate Energy Demand Curve NP3.2.5(3)(c) 16 NP3-959-EX 48-hour Aggregate AS Offers NP3.2.5(3)(e) ERCOT will send out an updated Notice once these reports are available. ADDITIONAL INFORMATION: The active Operating Day postings for Friday, December 3, 2010, and Saturday, December 4, 2010, were delayed due to extensive verifications being performed based on Nodal Go-live market data. Both Operating Day postings were available for download on Sunday, December 5, 2010. There is a help file titled 48 Hour Disclosure Reports Column Header Information<http://www.ercot.com/content/services/mdt/userguides/nodal/48_Hour_Disclosure_Reports_Column_Header_Information.xls>, posted at http://www.ercot.com/services/mdt/userguides/ that defines the columns in each of the reports. 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]<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. dh