1. PWG Profiling Working Group March 20, 20021 PWG Update Report By Ernie Podraza of Reliant Energy ERCOT PWG Chair for RMS Meeting March 20, 2003

2. PWG Profiling Working Group March 20, 20022 Next PWG Meetings 3/25, 4/16, 5/7, and 5/28. PWG Vice-Chair nominations open and election on 3/25. PUCT Project 25516, Load Profiling and Load Research Rule. PRR 362, Section 18.4.4.2 – Load Profile Id Type Correction. DLC Implementation. Annual Validation. Opt-in Entity Issues for PWG. Oil and gas properties profile change request.

3. PWG Profiling Working Group March 20, 20023 PUCT Project 25516, Load Profiling and Load Research Rule. 1.Approved at open meeting 3/05/03. 2.Load Research is done by TDSP per the sample design of ERCOT and TDSP cost recovery would be through the TDSP rate making process. 3.ERCOT has 6 months to establish a procedure to provide a method of recovery of research costs associated with obtaining a new profile by a sponsoring Market Participant. a)Ballpark estimate of the research cost for a new profile. b)List two or three methods with pro and con.

4. PWG Profiling Working Group March 20, 20024 PRR 362, Section 18.4.4.2 – Load Profile Id Type Correction 1.Deferred by PRS 11/26/02. 2.LPGRR2003-002 Sections 11.4 and 11.5. 3.Annual Validation procedures and timelines. 4.Will present for approval at the 4/23 RMS meeting.

5. PWG Profiling Working Group March 20, 20025 DLC Implementation. 1.PRR 385 Section 18 (RMS approved 3/25, PRS 3/20, TAC 5/08 and Board 5/20). 2.LPGRR2003-001 is attached to PRR385. 3.ERCOT Schedule is pending, Project Manager assigned. 4.PRR Section 6 (submitted by DSWG 3/17/03, PRR388 BUL Capacity Payments, TAC approved 3/6, Board 3/18). 5.Beta Test approved by TAC on 3/06 (PRR pending Green Mountain for Protocol waivers on 150 day notice and summer implementation of a profile).

6. PWG Profiling Working Group March 20, 20026 Annual Validation. 1.Feb 1 to complete algorithms using new usage month in the Decision Tree. a)Oncor, WTU, CPL, and TNMP complete. b)CNP pending. c)Preliminary analysis of profile id changes. 2.LPGRR2003-002 for procedures and timeline. 3.Lessons Learned document by ERCOT. 4.Profile ID assignments issues, future PRR and LPGRR.

7. PWG Profiling Working Group March 20, 20027 Annual Validation Preliminary analysis of profile id changes.

8. PWG Profiling Working Group March 20, 20028 Opt-in Entity Issues for PWG. 1.Nueces and San Patricio. 2.Texas SET Version 1.5 Mid April. 3.Invite the Muni and Coop Segment participation. 4.Updates to the LPG, Load Profiling Guides. 5.Updates to Protocols.

9. PWG Profiling Working Group March 20, 20029 Oil and gas properties profile change request. 1.Submitted to ERCOT 3/6/03 by Energy Data Source. 2.ERCOT to post to WEB. 3.Argument is that the aggregate profile is a very high load factor profile, close to flat. 4.ERCOT staff is to evaluate and submit to recommendation to PWG.