1. K E M A, I N C. TCA/KEMA ERCOT Cost Benefit Analysis Implementation Impacts Assessment ERCOT CBCG May 4, 2004

2. K E M A, I N C. 2 Topics for the Day n Review Implementation Impact Assessment Plan n Implementation Impacts Deliverables n Progress report  Where are we today?

3. K E M A, I N C. 3 Project Plan Review: Implementation Impacts n March: Design changes are reviewed n April: Inventory current situation n Mid April through early May:  Assess future operational and business processes  Identify future systems n May through Mid June: Develop detailed costs n Mid June though October: Review and finalize impacts

4. K E M A, I N C. 4 Topics for the Day n Review Implementation Impact Assessment Plan n Implementation Impacts Deliverables n Progress report  Where are we today?

5. K E M A, I N C. 5 Implementation-Related Costs and Impacts n Systems Costs n Staffing n Risk Transition n Training n On-going Maintenance & Support

6. K E M A, I N C. 6 Deliverables – Implementation Impacts n Preliminary outline and results (~summer) n Summary of Impacts Report  Summary of costs  Major cost drivers and cost risks  Treatment of other major risks  Qualitative impacts n Detailed cost spread sheets (Excel workbook format)  For ERCOT  For Market Participants, based on reasonable categorization of market participants

7. K E M A, I N C. 7 Topics for the Day n Review Implementation Impact Assessment Plan n Implementation Impacts Deliverables n Progress report  Where are we today?

8. K E M A, I N C. 8 Progress Report: Design Changes Summary n Three Formal Changes Case to be considered  TNT as defined in Concept (white) Papers and Draft TNT Protocols  Well defined and documentation readily available  Nodal Light as defined in the Change Case Summary  Need final definition and description by April 30, 2004  Northeast System Replication as defined in the Change Case Summary  Need final definition and description by April 30, 2004 n The “Backcast” effort has no system impacts implications

9. K E M A, I N C. 9 Progress Report: Inventory of Current Situation (April – May) n What do we need from:  CBCG?  ERCOT?  Stakeholders? n Agree on assumptions memo including sector list:  Investor-Owned Utilities, Municipal Utilities, Electric Cooperatives, Independent Power Generators, Independent Power Marketers, Independent Retail Electric Providers, Consumers, ERCOT ISO, PUCT  Categorization by participant type in each sector:  Large Participant vs. Small Participant or;  Find a typical representative if it exist

10. K E M A, I N C. 10 Progress Report: Assess Business Processes (now May-June) n For:  ERCOT  Stakeholder (by agreed upon sectors)  PUCT n Action:  Need to agree on suitable representative processes for each

11. K E M A, I N C. 11 Business Processes Impacted n Pre-Day Ahead n Day Ahead n Adjustment Period n Operating Day n Real-Time n Post-Real-time Activities n Others?

12. K E M A, I N C. 12 Impacted Business Process Sample – OLD BP

13. K E M A, I N C. 13 Impacted Business Process Sample – NEW BP

14. K E M A, I N C. 14 Progress Report: Identify Future Systems (June – July) n For:  ERCOT  Stakeholder (by agreed upon sectors)  PUCT n Actions:  Initial estimates based on empirical information  Confirmation via vendor Request for Price Information (RFI) and visits

15. K E M A, I N C. 15 Future Progress Reports n Describe how KEMA will develop :  Detailed Costs  Review and Finalize Costs

16. K E M A, I N C. 16 Questions?