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Progress Highlights

Texas Nodal Market Implementation ERCOT Board of Directors Meeting Nodal Status Review December 12, 2006 Ron Hinsley, Chief Information Officer rhinsley@ERCOT.com. Progress Highlights. Nodal Executive Director hired Jerry Sullivan from PA Consulting December 11 start date

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Progress Highlights

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  1. Texas Nodal Market ImplementationERCOT Board of Directors MeetingNodal Status ReviewDecember 12, 2006Ron Hinsley, Chief Information Officerrhinsley@ERCOT.com http://nodal.ercot.com 1

  2. Progress Highlights • Nodal Executive Director hired • Jerry Sullivan from PA Consulting • December 11 start date • Surcharge filing by January 30 • PUCT granted request for delay • Server and storage equipment installed in Taylor • First builds for development, testing and some EDS environments • Additional production environments for later purchase • 500th attendee trained milestone reached • 2007 Training classes posted on web • Registration can begin immediately • Conceptual Systems Design (CSD) are underway in most areas • First CSD, CRR CSD, approved on 11/29/2006 http://nodal.ercot.com 2

  3. Q3 2006 Q4 2006 Q1 2007 Q2 2007 Q3 2007 Q4 2007 Q1 2008 Q2 2008 Q3 2008 Q4 2008 Q1 2009 Time line update Blue diamonds right of Business requirements line denote schedule slippage CIM Model UI and EDS 3 components CRR, UI, Planning NMMS DA Model Build DA Model EMS FAT RT FAT MMS DAM Build DA FAT FAT CRR POC RT FAT Integration DA FAT RT FAT Commercial Systems DA Build DA FAT FAT MIS Acronym Key FAT – Factory Acceptance Testing CSD – Conceptual System Design SOW – Statement of Work EDS – Early Delivery System Itest – Integration Testing POC – Proof of Concept RT FAT EDW DA FAT Build Dev Environments Build ITest 3 Build EDS 3 Infrastructure Build ITest & EDS1/2 Build ITest 4 Build EDS 4 MP Qual Begin Qual Freeze Training Complete Readiness Metrics Start MP Registration Registration Freeze ERCOT & MP Readiness DA Market 12/08 RT Market 12/01 168 Hour Trials Itest 4 ITest 1/2 ITest 3 Trials & Implementation EDS 1 /2 EDS 3 EDS 4 Business Requirements Target Single Entry Model 3/31/ http://nodal.ercot.com 3

  4. Progress this Month (Detail) • Integration Package • Completed First Design iteration of Settlement Pre-Processor and RT messaging • Proof of Concept (POC) Environment Final Test Report with Hawk Rules completed • Common Services Final Test Report completed • Market Participant Engagement & Readiness Package • Customer Care / Market Participant Readiness – Phase 2 Statement Of Work completed and reviewed with Purchasing & Project Stakeholder group • MIS – Requirements approved by TPTF • MIS – Conceptual System Design delivered to IDA for review • Training – Reached “500 Trained” milestone. Training classes for rest of year and into 2007 posted on the web and available for registration • Successfully launched Demonstration Course • Demonstrated provision of Electronic Testing • ERCOT Readiness & Transition Package • QSE Qualifications approach presented to TPTF • Market Trials approach presented to TPTF • MISO Readiness Criteria Case Study presented to TPTF • Completed input to registration requirements • Organization design workshop conducted with IRT team • Communication and awareness approach conducted with IRT team • System development awareness approach conducted with IRT team • Infrastructure Package • Storage array and IBM equipment for the Taylor data center installed • Austin development environment build out commenced • Power Recovery – Austin Storage Migration: All 120 servers migrated • Stand up services complete for ABB MMS/OS Remote Development Environment • Integrated Testing Package • Proof of Concept for Defect Reporting completed • “How To” guide for Test cases published to projects • Established test team for NMMS • Program Management • Executive Director for Nodal appointed, scheduled to start 12/11 • Nodal Budget formally baselined – status reporting, cost reporting, and change control cycles initiated • IBM commenced second review 12/4 – practical application of the control system examined in the first review • Nodal surcharge filing by January 30 • Integration Design Authority (IDA) Package • powERUP site published for internal review (RUP guidance and templates tailored for ERCOT) • System of Systems Market Information view presented to TPTF • Completed reviews of first project Conceptual System Designs (3 of 37) • Interface specification draft published • Commercial Systems Package • Joint COMS/Testing kickoff for elaboration phase • 1st CSD drafted for TPTF (CMM, 1of 11) • Necessary re-execution of prototype and functional tests completed • All COMS Prototypes (4 separate items) have been completed • NPRR impact analysis completed • Network Model Management System/Network Model Package • Successfully conducted Nodal Modeling Forum (including review of NMMS CSD) • NMMS – detailed use cases 90% complete & integration model template 50% complete • NMMS – Completed Phase 2 vendor SOW cost analysis • Network Model & Telemetry – Model Fidelity & Business Process completed • 1707 issues closed (overall 38% complete of 4,260 identified data issues in 4 weeks) • Energy Management System Package • Live ERCOT SCADA data received on ERCOT EMS at Vendor • Required Zonal “customs” requirements evaluation complete • Market Management System/SCED Package • All MMS Requirements submitted to TPTF (excellent feedback received) • Completed Phase 2 vendor SOW cost analysis • Congestion Revenue Rights Package • TPTF CSD comments received and incorporated • Detailed design documents in progress • Electronic Data Warehouse Package • 1 of 2 reqts (IMM) referred by TPTF to IMM • EDW usage criteria approved by IDA http://nodal.ercot.com 4

  5. Overall Status Overall program status remains red – schedule is the key challenge  - Worse /  - Better / = - Same http://nodal.ercot.com 5

  6. Spending year to date EXPENDITURE CATEGORY NOV YTD • O&M Expenses (,000): • Internal Labor (943) 1,659 • Equipment, Tools, Materials & Supplies 7 46 • Outside Services/Consulting 220 3,650 • Facilities & Utilities (296) 1 • Employee Expenses 1 32 • Interest & Fees 35 170 • Other 0 13 • Incremental resource allocation 300 300 • Support Department allocation 1,285 1,285 • Facilities allocation 323 323 • Sub-Total 933 7,479 • Capital Expenditures (,000): • Sub-Total 14,408 30,770 • Total Expenditures (,000) 15,341 38,249 • Commitments 36,435 Notes: Total spending through October $22,908 http://nodal.ercot.com 6

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