1. Protocol Revision Subcommittee Report to ERCOT Technical Advisory Committee October 9, 2003

2. PRS Report Overview Six PRRs with recommendations to approveSix PRRs with recommendations to approve One PRR with recommendation to rejectOne PRR with recommendation to reject ERCOT System Change Prioritization Report with recommendation to approveERCOT System Change Prioritization Report with recommendation to approve

3. PRR 381 – Update QSE Designation Outlines the process when a QSE terminates its agreement with an LSE or Resource EntityOutlines the process when a QSE terminates its agreement with an LSE or Resource Entity Protocols do not specify a timeline or the process for a QSE to terminate an LSE or Resource EntityProtocols do not specify a timeline or the process for a QSE to terminate an LSE or Resource Entity –PRR previously remanded to PRS from Board/TAC

4. PRR 381 – Update QSE Designation QSE provides 5 days notice prior to terminationQSE provides 5 days notice prior to termination ERCOT notifies LSE of credit requirements 3 days prior to terminationERCOT notifies LSE of credit requirements 3 days prior to termination LSE, if new QSE not designated, may become an “Emergency QSE” and may scheduleLSE, if new QSE not designated, may become an “Emergency QSE” and may schedule –After 7 days, “Emergency QSE” must designate new QSE or meet QSE requirements –Failure could result in PUC action up to and including mass drop

5. PRR 381 – Update QSE Designation Impact AnalysisImpact Analysis –Staffing impact Manual process due to anticipated infrequencyManual process due to anticipated infrequency –No cost/budget impact predicted Actual event will require intensive effort from several ERCOT departmentsActual event will require intensive effort from several ERCOT departments –May implement immediately –No ERCOT computer system impact –Business Functions Difficult to assess impact of anticipated infrequent occurrencesDifficult to assess impact of anticipated infrequent occurrences –EQSE may not be able to submit schedules resulting in manual processes

6. PRR 427 – RMR General Clarifications Objective is to clarify RMR provisionsObjective is to clarify RMR provisions –Further defined “Eligible Costs” –Defined the non-fuel “Eligible Cost” budgeting process –Documentation standards Changed Incentive Factor applied to actual Eligible Costs to 10% from 8%Changed Incentive Factor applied to actual Eligible Costs to 10% from 8% –Clarified reduction for non-availability

7. PRR 427 – RMR General Clarifications Impact AnalysisImpact Analysis –1 FTE required in 2004 for RMR settlements –New process effective with new RMR contracts effective January 2004 –No ERCOT computer system impact –Business Functions Manual processing of Eligible CostsManual processing of Eligible Costs –No operating practices impact –No interim solutions to evaluate

8. PRR 428 – RMR Scheduling Clarifications Defines Static and Dynamic Responsibility Transfer (RT) scheduling of energy from RMR unitsDefines Static and Dynamic Responsibility Transfer (RT) scheduling of energy from RMR units Sets forth principles for RMR RTsSets forth principles for RMR RTs

9. PRR 428 – RMR Scheduling Clarifications Impact AnalysisImpact Analysis –No direct staffing impact –No cost/budget impact –ERCOT computer system impact Change being evaluated; contingent on RT testing for RT other than QSE to QSEChange being evaluated; contingent on RT testing for RT other than QSE to QSE –Business Functions Requires procedure changes for increased monitoring and verification of RMR RT changesRequires procedure changes for increased monitoring and verification of RMR RT changes –No operating practices impact Procedure changes and increased monitoringProcedure changes and increased monitoring –No interim solutions to evaluate

10. PRR 428 – RMR Scheduling Clarifications Impact AnalysisImpact Analysis –Alternatives for Implementation New ERCOT commentsNew ERCOT comments –Clarification of PRR language for consistency –Addresses lost signal situation »If use last known value, no system change »If indicative schedule used, system change required potentially for all RTs

11. PRR 444 – Move-In/Move- Out (MIMO) Stacking Implements RMS protocol changes for handling multiple non-sequential transactions on a single ESI IDImplements RMS protocol changes for handling multiple non-sequential transactions on a single ESI ID

12. PRR 444 – Move-In/Move- Out (MIMO) Stacking Impact AnalysisImpact Analysis –Staffing impact Project in flight so staff has absorbed certain changesProject in flight so staff has absorbed certain changes Request 7 FTEs in 2004 for FasTrak and exception monitoringRequest 7 FTEs in 2004 for FasTrak and exception monitoring –No additional cost/budget impact (in-flight) –Project completion – August 2004 –In-flight, impacts commercial systems –Business Functions Adjusted processes for MIMO changesAdjusted processes for MIMO changes –No operating practices impact

13. PRR 447 – TCR Credit Limit Constraint Based on Clearing Prices Does not change calculation of clearing prices (struck for further development)Does not change calculation of clearing prices (struck for further development) Clarifies calculation of PCR prices by adding formulaClarifies calculation of PCR prices by adding formula Clarifies that only awardees will be postedClarifies that only awardees will be posted

14. PRR 447 – TCR Credit Limit Constraint Based on Clearing Prices Impact AnalysisImpact Analysis –No staffing impact –No cost/budget impact –No estimated time requirements –No ERCOT computer system impact –No settlement system impact –Business Functions Language clarification only reflecting current processLanguage clarification only reflecting current process –No operating practices impact –No interim solutions to evaluate

15. PRR 460 – CSC Exemption Criteria Establishes process for CSC exemptionsEstablishes process for CSC exemptions –Not change annual average shift factor by more than +/-5% –No commercial impact/gain for requestor

16. PRR 460 – CSC Exemption Criteria Impact AnalysisImpact Analysis –Staffing impact Request for exemption verifications could require additional FTEs even though data for independent review is available to market participantsRequest for exemption verifications could require additional FTEs even though data for independent review is available to market participants –No cost/budget impact –May be implemented immediately –May impact ERCOT computer system –May impact business functions –May impact operating practices –Alternative is to limit exemptions to NOIEs

17. PRRs for Approval PRR 381 – Update QSE DesignationPRR 381 – Update QSE Designation –Effective November 1, 2003 PRR 427 – RMR General ClarificationsPRR 427 – RMR General Clarifications –Effective November 1, 2003 PRR 428 – RMR Scheduling ClarificationsPRR 428 – RMR Scheduling Clarifications –Effective upon system implementation PRR 444 – MIMO StackingPRR 444 – MIMO Stacking –Effective for some portions on November 1, 2003; remainder effective upon system implementation PRR 447 – TCR Credit Limit ConstraintPRR 447 – TCR Credit Limit Constraint –Effective November 1, 2003 PRR 460 – CSC Exemption CriteriaPRR 460 – CSC Exemption Criteria –Effective November 1, 2003 if limited to NOIEs; otherwise upon addition of ERCOT FTEs

18. PRRs for Rejection PRR 445 – Amendment to PRR Designation & Review Time Period for those PRRs deemed as “Urgent” and the Urgent Review TimelinePRR 445 – Amendment to PRR Designation & Review Time Period for those PRRs deemed as “Urgent” and the Urgent Review Timeline PRS recommended rejection at last TAC meetingPRS recommended rejection at last TAC meeting –Requires TAC action

19. System Prioritization Reviewed prioritization of all 2004 proposed system changesReviewed prioritization of all 2004 proposed system changes –System changes related to making existing ERCOT instructions “instructed” included in EMMS implementation –No proposed changes to overall priority list –Recommend approval