COPS – ERCOT PROJECTS UPDATE

1. COPS – ERCOT PROJECTS UPDATE WHOLESALE MARKET DEVELOPMENT Paula Feuerbacher February 22, 2005

2. PROJECTS: • PR40075 – PRR-488 – Weather Responsiveness • Estimated Deployment: March, 2005 • PR30026 – EPS Meter Data Extract • Estimated Deployment: April, 2005 • PR40104 – Zero Charge Elimination • Estimated Deployment: 3rd Quarter of 2005 • This project has been placed on-hold by ERCOT until the Lodestar 3.7 Upgrade project deploys to the Production Environment. • Once the project is removed from on-hold status, ERCOT will begin the process of gathering requirements and exploring several options with which this effort may be deployed without impacting Market Participants. • Those options will be presented at future COPS meetings.

3. Lodestar Upgrade Status • Estimated Deployment: mid March, 2005 • Test Plan: • Execute full batch baseline versions in 2.25 • Rerun baselines in 3.7 (perform comparison to 2.25) • Included: Daylight Savings Days, year crossover, weekend/holiday, reports, back-out functionality. • Comparison of baselines between various testing environments (P-Test and I-Test; must match) • Database User Functionality • Interfaces to other packages • Production Simulation – full batch runs across all packages including user macros, reporting, etc. • Reports supplied to the Market (data/format) will not be impacted by this upgrade.

4. Lodestar Upgrade Schedule Status

5. PROJECTS: EMMS R4 • Estimated Deployment: mid May, 2005 • PR30131_02 – Resource Plan Improvements • PR30093 – Replacement Reserve • PR40050 – Resource Specific Bid Limits • PR30163 – OOM Tool

6. PR30131_02 – Resource Plan • New Bill Determinants • HSL_zone_qse_unit: 96 hourly interval cut in the Settlement and Billing Extract. • High Sustainable Limit whose value can change every 15 minutes. • OOMCFLAG_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract when utilized. • A binary (0,1)flag that indicates if a unit has been procured for OOMC • 0 value indicates the unit was not deployed for OOMC • 1 value indicates the unit was deployed for OOMC • Impacted Bill Determinants • RP_zone_qse_unit: 96 hourly interval cut in the Settlement and Billing Extract • Currently reported as 24 hourly interval cut • RPAGG_zone_qse_unit: 96 hourly interval cut in the Settlement and Billing Extract • Currently reported as 24 hourly interval cut • LSL_zone_qse_unit: 96 hourly interval cut in the Settlement and Billing Extract • Currently reported as 24 hourly interval cut

7. PR30093 – Replacement Reserve • New Bill Determinants • LCFLAG_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract • 0 value indicates zonal RPRS was awarded • 1 value indicates local RPRS was awarded • 2 value indicates no instruction awarded • ZRPHR_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract • Number of hours a generating unit is continuously procured for zonal RPRS to allow the payment to be spread across the number of hours the generating unit was procured. • LRPHR_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract • Number of hours a generating unit is continuously procured for local RPRS to allow the payment to be spread across the number of hours the generating unit was procured. • LPS_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract • Start-up price of a unit selected for local RPRS. • LPO_zone_qse_unit: 24 hourly interval cut in in the Settlement and Billing Extract • Operating price of a unit selected for local RPRS. • ZRPADJ_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract when utilized. • Manual adjustment imported by Settlements & Billing for dispute issues. • LRPADJ_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract when utilized. • Manual adjustment imported by Settlements and Billing for dispute issues. • HSL_zone_qse_unit: 96 hourly interval cut in the Settlement and Billing Extract. • High Sustainable Limit whose value can change every 15 minutes. • ZRPHRBP_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract. • Hourly bid price used in zonal RPRS payment calculation. • ZRPSUBP_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract. • Start-up bid price used in zonal RPRS payment calculation • OOMCFLAG_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract. • A binary (0,1)flag that indicates if a unit has been procured for OOMC • 0 value indicates the unit was not deployed for OOMC • 1 value indicates the unit was deployed for OOMC

8. PR40050 – Resource Specific Bid Limits • LEIOL_zone_qse_unit: 96 interval cut in the Settlement and Billing Extract • Returns to extract – no format change

9. PR30163 – OOM Tool • New Bill Determinants • OOMEVDI_zone_qse_unit: 96 interval cut in the Settlement and Billing Extract • A VDI OOME instruction that is sent to a unit. • OOMEFLT_qse: 96 interval cut in the Settlement and Billing Extract • An OOME instruction that is sent to a QSE to move any units ERCOT wide a certain amount • OOMEZNL_zone_qse: 96 interval cut in the Settlement and Billing Extract • An OOME instruction that is sent to a QSE to move any units within a particular Zone a certain amount • OOMCVDIFLAG_zone_qse_unit: 24 hourly interval cut in the Settlement and Billing Extract when utilized. • A binary (0,1)flag that indicates if a unit has been procured for OOMC via a VDI. • INTERVALHOLD: 96 hourly interval cut in the Settlement and Billing Extract. • A flag that indicates if an interval hold instruction has been issued. • Each hold instruction is assigned a unique and sequential identifier (1, 2, 3) per trade day for the length of the instruction.

10. EMMS R4 TRAINING • Discuss Market training options: • Market Bulletins are currently being drafted and scheduled to send by mid March • Should ERCOT schedule Market Training meetings to… • Piggy-back with Operations Training • Different audience? • Piggy-back to a COPS meeting • Settlement focused • Other suggestions…