Role of Account Management at ERCOT Market Engagement and Readiness (MER) Training Update March 23, 2007 Market Education

Page 2, March 23 TPTF Update Current Training Development Course Length Training Sub- Group Review Beta Course Class Room Training Web-Based Training Due DateStatusDue DateStatus ERCOT Nodal 101: The Basics 1 - DayDoneFeb-07 80% 3/23 Economics of LMP1 - DayDoneN/A Transition To Nodal Markets 1 - DayApr-07 90% N/A Load Serving Entity Days Apr-07 May-07 70%Jul-070% Basic Training Program4 - DaysJune – 07 70%Aug-070%

Page 3, March 23 TPTF Update ERCOT Nodal 101 – Web based training

Page 4, March 23 TPTF Update ERCOT Nodal 101 – Web based training

Page 5, March 23 TPTF Update ERCOT Nodal 101 – Web based training

Page 6, March 23 TPTF Update ERCOT Nodal 101 – Web based training

Page 7, March 23 TPTF Update Training Delivery – Upcoming Course Schedule ERCOT Nodal 101: The Basics DateLocationDelivery April 11, 2007TXUTXU (Dallas) Instructor Led April 12, 2007TXUTXU (Dallas) Instructor Led April 27, 2007ERCOT AustinERCOT Austin (Austin) Instructor Led May 9, 2007ERCOT TaylorERCOT Taylor (Taylor) Instructor Led May 14, 2007ERCOT AustinERCOT Austin (Austin) Instructor Led May 22, 2007Reliant EnergyReliant Energy (Houston) Instructor Led May 23, 2007Reliant EnergyReliant Energy (Houston) Instructor Led June 19, 2007GarlandGarland (Dallas) Instructor Led June 20, 2007GarlandGarland (Dallas) Instructor Led July 9, 2007Suez EnergySuez Energy (Houston) Instructor Led July 10, 2007Suez EnergySuez Energy (Houston) Instructor Led August 14, 2007NRG EnergyNRG Energy (Houston) Instructor Led August 15, 2007NRG EnergyNRG Energy (Houston) Instructor Led The Economics of LMP March 29, 2007ERCOT TaylorERCOT Taylor (Taylor) Instructor Led May 25, 2007ERCOT AustinERCOT Austin (Austin) Instructor Led

Page 8, March 23 TPTF Update Transition to Nodal Markets and Startup Testing  Course objective  Prepares ERCOT and Market Participants for the transition  Presents the details of the ERCOT Transition Plan  Focuses on the System Testing and Nodal Market Implementation Track  Focuses on QSE’s and TSP’s assistance in testing nodal systems  Covers each phase of the Early Delivery Systems  Cover ERCOT’s staffing plan for EDS systems  Covers the expected operating actions from ERCOT and Market Participants  Concludes with a discussion of market readiness criteria for all market participants Transition To Nodal markets

Page 9, March 23 TPTF Update Transition to Nodal Markets and Startup Testing  Findings  Not a market concepts education course  Looks like nodal readiness communication  Course content is still being worked on by ERCOT / TPTF  The course will be different each time it is offered  Overlaps with other communications efforts  Feedback  Just talking about the plan is not enough  Need current data / Subject Matter Experts Transition To Nodal markets

Page 10, March 23 TPTF Update Transition to Nodal Markets and Startup Testing  Nodal Readiness Communication Layers Transition To Nodal markets Transitions Course Readiness Seminars / Conference calls / Web-casts / Road Shows / Readiness Page on Web-Site One-on-one communication

Page 11, March 23 TPTF Update Transition to Nodal Markets and Startup Testing  Recommendation  Incorporate the Transition Course with ERCOT Readiness Communication  Part of the Market Readiness Seminars  Transition plan and EDS overview  Program / Project Updates  Break-out sessions as needed  Web-Based Training  Transition plan and EDS overview  Web-cast sessions  Transition plan and EDS overview  Current testing efforts  Q & A with Subject matter Experts Transition To Nodal markets

Page 12, March 23 TPTF Update Questions Questions ?? Transition To Nodal markets