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Objective:

PR-60006_01 ERCOT Outage Evaluation & Resolution Phases I & II. Project Objective / Scope / Dependencies. Objective: Achieve improved Market performance and reliability through a reduction of ERCOT Retail Systems unplanned outages Scope/Why is this important?:

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Objective:

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  1. PR-60006_01 ERCOT Outage Evaluation & Resolution Phases I & II Project Objective / Scope / Dependencies Objective: Achieve improved Market performance and reliability through a reduction of ERCOT Retail Systems unplanned outages Scope/Why is this important?: Implement High Availability (HA) solutions for the NAESB application and PaperFree file server to target 99.25% availability for these systems. Dependencies: None, currently November 16, 2006 Page 1

  2. PR-60006_01 ERCOT Outage Evaluation & Resolution Phases I & II Summary of Project Status • Phase: • Initiation – January 23, 2006 • Planning – February 13, 2006 • Execution – June 23, 2006 • ITEST – November 1, 2006 • Implementation/Go Live – • November 11, 2006 - Paperfree production migration • November 27, 2006 - NAESB production go-live • Closing – January 31, 2007 • Recent: • PaperFree fileserver go-live complete • Next steps: • Market Participant interoperability testing starts November 27, 2007 • Primary Market testing Mon, Nov 27, 2006 - Fri, Jan 12, 2007 • Secondary (failure) testing Mon, Jan 15, 2007 - Fri, Jan 26, 2007 • Market Notice: Friday, Nov 17, 2007, sign-up starts November 16, 2006 Page 2

  3. PR-60006_01 ERCOT Outage Evaluation & Resolution Phases I & II Testing/Go-Live Details Testing: Service Providers will be required to test All Market Participants are encouraged to test Dedicated ERCOT support will be available Testing will be conducted during ERCOT business hours, excluding weekends and holidays, from 8:00 AM to 5:00 PM, Central Prevailing Time Go-Live: New Production systems will be available upon successful completion of testing Current NAESB URL will be operated in parallel until all MPs are transitioned Target date for completion is January 31, 2007 Current URL will be disabled as of February 28, 2007 Transaction metrics will only be reported on the new system beginning January 31, 2007 November 16, 2006 Page 3

  4. PR-60006_01 ERCOT Outage Evaluation & Resolution Phases I & II Additional Information • Bus Lead: Denise E. Taylor • phone number: 512-248-3932 • e-mail: dtaylor@ercot.com • PM: Julie Thomas • phone number: 512-248-6552 • email: jthomas@ercot.com • PPL: Source: Market Priority: 1.1 Rank: 8 Program Area: RO • What prompted the project: • SCR 745 Retail Outage Evaluation & Resolution • Phase I - NAESB/Proxy Clustered Environment • Phase II -PaperFree Clustered Environment • Supporting business driver: • Providing solutions to reduce or virtually eliminate single points of failure would address a significant portion of the numbers and duration of unplanned outages Page 4 November 16, 2006

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