1. Profiling Working Group 1 PWG Update Report By Brad Boles of Cirro Energy ERCOT PWG Vice-Chair for COPS Meeting November 6, 2007

2. Profiling Working Group 2

3. 3 2007 Major Accomplishments 1Implemented new Version 2 ERCOT Profiles. 2Designed LRS sample selection round two. 3Implemented New Oil & Gas Profile – BUSOGFLT. 42007 Annual Validation nearly complete. 5Issued 2004, 2005, 2006 and 2007 preview UFE Analysis. Set up area on PWG web page for key documents. Filed Language for Demand Response Implementation in LPGRR027 and PRR736 Filed additional LPGRRs 19, 20, 21, 22, 23, 24, 25, 26 and 28.

4. Profiling Working Group 4 2007 Goals Update 1Implement new Version 2 ERCOT Profiles. Done. 2LRS sample selection round two. Done. 3New Oil & Gas Profile – BUSOGFLT. Done. 42007 Annual Validation. On schedule. Additional slides to follow. 5Evaluate the methodology for profile scaling factors (per UFETF Nov. 16) 6Review 2004, 2005 & 2006 UFE Analysis. Initial 2006 analysis complete. 2005 report was presented to PWG in October. 7Examine ways to accommodate extreme events in Settlement process. 8Establish Long Term Strategy of Load Profiles including refresh timeline Pending PUCT new project on advanced metering implementation.

5. Profiling Working Group 5 2007 Goals Update 9 IDR Analysis – 2 issues outstanding from original analysis 10Review if having more weather stations adds accuracy 11Review if the weighting of weather stations is appropriate 12Review IDR installation procedure language to ensure compliance Pending PUCT new project on advanced metering implementation. 13Does having 2 decimals on load profiles significantly affect settlement. Done. 14 Review LPG language on list based profiles and universality 15 PUCT Docket responses to demand response or AMR rule, etc. Decision Tree pending COPS Task Force Recommendation. 16 Set up area on PWG web page for key documents. Done. 17 Annual Review of load profiles as specified in market language

6. Profiling Working Group 6 2007 Goals Update 18Analysis to identify new profiles as specified in market language Primary Voltage possibility currently not available from TNMP. 19Update the TOU procedures on the Load Profiling web site Pending PGRR023. 20 Investigate ways to improve Business Profile ID assignments 21Review analysis of DLC demonstration programs per Pilot. Pilot project now planned for summer 08 analysis. 22Review Protocol and LPG language for appropriateness for large Opt-in Entity. 23Review Protocol and LPG language for consistency with PUCT Load Research Rule. 24Advanced Metering Implementation for IDR Requirement. ERCOT Staff to draft an LPGRR.

7. Profiling Working Group 7 Annual Validation Update Residential Complete Business 814_20s to flow in November

8. Profiling Working Group 8 Round 2 Load Research Sample Meters Reused site data being processed as usual New meter procurement in process Installation completion due end of June 2008 About 37% Complete

9. Profiling Working Group 9 Round 2 Sample Point Installation Progress Total Sample Points Installed (Including Retained Round 1 Points)

10. Profiling Working Group 10 Round 2 Sample Point Installation Progress New Sample Points Installed

11. Profiling Working Group 11 LPGRR018 Default Residential Profile Segment For new ESIIDs Implementation date was 11/1/2007.

12. Profiling Working Group 12 Demand Response Update On Oct. 23, 2007 PWG issued these action items;  Table LPGRR027 until a complete Impact Analysis can be estimated.  ERCOT Staff shall build as complete a list of discussion items and questions for the Task Force on DR Program implementation.  Texas Set on Oct. 24 shall discuss as part of the RMS update the DR implementation.  Market Rules and ERCOT Legal shall review Protocols and the Load Profiling Guide to see if the 150 day notice can be waved.  Market Participants and ERCOT are asked to evaluate how much time is needed to implement system changes so an accurate timeline can be crafted.  PWG shall recommend to COPS with RMS that a Task Force be formed to build requirements for DR Programs by Feb. 2008.

13. Profiling Working Group 13 LPGRR028 Load Profiling Guide cleanup, Corrections and Update VOTE PWG requests the following motion: That COPS recommend to the TAC approval of LPGRR028 http://www.ercot.com/mktrules/issues/lpgrr/025-049/028/index.html

14. Profiling Working Group 14 Questions? PWG 2007 remaining meeting dates; Nov. 15 and Dec. 4 Estimate Meetings in 2008 shall be the fourth Tuesday