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ERCOT Wholesale Market Development Update - Projects Overview

This update from Paula Feuerbacher provides a comprehensive overview of various ongoing and upcoming projects within the ERCOT framework as of October 20, 2004. Key initiatives include load research sampling, IDR default profiling, and weather responsiveness, with specific estimated deployment dates ranging from November 2004 to the second quarter of 2005. The document outlines changes affecting settlements with detailed formula adjustments, linking various resource plans and settlement methodologies. This update is essential for understanding ERCOT's project trajectory and market operational improvements.

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ERCOT Wholesale Market Development Update - Projects Overview

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  1. COPS – ERCOT PROJECTS UPDATE WHOLESALE MARKET DEVELOPMENT Paula Feuerbacher October 20, 2004

  2. PROJECTS: • PR30014 – Load Research Sampling: • TDSP Pilot – Initiated 08/18/04 • Estimated Deployment: November 1, 2004 • PR40005 – NIDR to IDR Default Profiling (PRR-471) • Estimated Deployment: November 3, 2004 • PUCT 28407 – Final REC Purchasing Requirements • Estimated Deployment: late November 2004 • PRR-488 – Weather Responsiveness • Estimated Deployment: early December 2004 • PR30026 – EPS Meter Data Extract • Estimated Deployment: mid December 2004 • PR40104 – Zero Charge Elimination • Estimated Deployment: 2nd Quarter of 2005 • Lodestar Upgrade • Estimated Deployment: 1st Quarter of 2005

  3. EMMS R4 COPS presentation Ryan Aldridge, ERCOT 9/20/04

  4. 4 Projects Affecting Settlements • PR-30093 (RPRS) • PR-30131_02 (Resource Plan Improvements) • PR-40050 (Resource Specific Bid Limits) • PR-30163 (OOM Tool)

  5. PR-40093 (RPRS) • PRR’s 413 and 491 • 11 new Bill Determinants • Changes to both Zonal and Local RPRS Settlement formulas

  6. PR-40093 (RPRS) Zonal -- Current • Current Zonal RPRS Formula • PCRPqiuz = -1 * MCPCRPiz * ZCRPqiuz • PCRPqiuz = Replacement Reserve Service Payment by Resource per interval for that QSE • MCPCRPiz = Highest Replacement Reserve Market Clearing Price • ZCRPqiuz = Accepted Unit Adjustment Replacement Reserve Service Capacity Quantity (MW)

  7. PR-40093 (RPRS) Zonal – R4 • EMMS R4 Zonal RPRS Formula • PCRPqiuz = -1 * Max (PABCRPiu, MCPCRPiz) * ZCRPqiuz • PABCRPiu = CBPRPiu/N + HOBPRPiu • PABCRPiu = Bid Price of the single Resource awarded Replacement Reserve • CBPRPiu = Capacity bid price submitted by the QSE for the single Resource • N = Number of hours that this Resource is continuously procured • HOBPRPiu = Hourly operational bid price submitted by the QSE for the single Resource

  8. PR-40093 (RPRS) Local -- Current • Current Local RPRS Formula • LPCRPqi = -1 * SUM (PABCRPiu * LCRPqiu) u • LPCRPqi = Replacement Reserve Service Payment by Resource per interval for that QSE • PABCRPiu = Bid Price of the single Resource awarded Replacement Reserve of that interval • LCRPqiu = Accepted single Resource Replacement Reserve Service Capacity to solve Local Congestion (MW) per interval per QSE for that single Resource.

  9. PR-40093 (RPRS) Local – R4 • EMMS R4 Local RPRS Formula • LPCRPiuq = -1 * MAX (0, LPSRPiu + LPORPiu) • LPCRPiq = -1 * SUM (LPSRPiu + LPORPiu) u • LPCRPqi = Replacement Reserve Service Payment by Resource per interval for that QSE • LPSRPiu = Price for starting a unit that is selected for Replacement Reserve Service to resolve Local Congestion • LPORPiu = Price for operating a unit that is selected for Replacement Reserve Service to resolve Local Congestion • LPORPiu = SUM [(RCGMECc – MCPEjz) * MIN (MINCAPju/4, MRju)] j • LPSRPiu = RCGSCc/N • RCGMECc = Resource Category Generic Minimum energy Cost for a specific category of generation unit. • MCPEjz = Market Clear Price • MINCAPju = Generating Unit Low Sustainable Limit as reported in the unit’s Resource Plan • MRju = Actual metered output of the Resource • RCGSCc = Resource Category Generic Startup Cost for a specific category of generation unit • N = Number of hours that this Resource is continuously procured

  10. PR-30131_02 Resource Plan Improvements • PRR’s 359 • No new Bill Determinants • No Settlement formula changes

  11. PR-30131_02 Resource Plan Improvements • PRR 359 allows QSEs to update their Resource Plans after the adjustment period • EMMS R4 will take a snapshot of the Resource Plan every 15 minutes • All data passed to Settlements from the Resource Plan will come across as 96 hourly interval cuts instead of the current 24 hourly interval cuts • QSEs will see the 96 hourly interval cuts and will need to scale to 24 hourly interval cuts in order to shadow settle

  12. PR-40050 Resource Specific Bid Limits • PRR 485 • Bringing back LEIOL’s • Small change to Local Balancing Energy Down formula

  13. PR-40050 (Bringing back LEIOL’s) • PRR 485 allows resources to indicate if they are bid or non-bid resources • Deployments to non-bid resources will be paid OOME (NMLEIOL or OOMIOL) • Deployments to bidding resources will be paid as bid (LEIOL)

  14. PR-40050 LBE Down formula change -- Current • Current LBEDN formula • LPCRSDquiz = -1 * Σ((MCPEiz - BPMqiuz ) * Max(0, Min(OLqiuz -MRquiz, OLqiuz - IOLqiuz)))u • LPCRSDquiz = Payment to QSE for providing Balancing Energy Down from specific unit to solve Local Congestion per QSE per interval per zone • MCPEiz = Market Clearing Price of Energy per interval per zone • BPMqiuz = Decremental bid premium specified for that specific unit per interval • OLquiz = Resource Plan output level submitted by the QSE for the unit given the unit-specific instruction for that interval • MRquiz = Meter reading per unit per interval • IOLquiz = The instructed output level for the unit given a unit-specific instruction

  15. PR-40050 LBE Down formula change – R4 • EMMS R4 LBEDN formula • LPCRSDquiz = -1 * Σ(MAX(0,(MCPEiz - BPMqiuz )) * Max(0, Min(OLqiuz -MRquiz, OLqiuz - IOLqiuz)))u • LPCRSDquiz = Payment to QSE for providing Balancing Energy Down from specific unit to solve Local Congestion per QSE per interval per zone • MCPEiz = Market Clearing Price of Energy per interval per zone • BPMqiuz = Decremental bid premium specified for that specific unit per interval • OLquiz = Resource Plan output level submitted by the QSE for the unit given the unit-specific instruction for that interval • MRquiz = Meter reading per unit per interval • IOLquiz = The instructed output level for the unit given a unit-specific instruction

  16. PR-40050 Aggregated LBE Down formula changeCurrent • Current LBEDNAGG formula • LPCRSDqviz = -1 * Σ((MCPEiz - BPMqivz )) * Max(0, Min(OLqivz -MRqviz, NETDEQiv)))v * LBEAGiv • LPCRSDquiz = Payment to QSE for providing Balancing Energy Down from specific Aggregated unit to solve Local Congestion per QSE per interval per zone • MCPEiz = Market Clearing Price of Energy per interval per zone • BPMqivz = Decremental bid premium specified for that specific Aggregated unit per interval • OLqivz = Resource Plan output level submitted by the QSE for the Aggregated Unit containing the unit given the unit-specific instruction for that interval • MRqviz = Meter reading per Aggregated Unit per interval • NETDEQiv = The overall net direction per the instructions given to the Aggregated Unit results in a down direction • LBEAGiv = The percentage of the aggregated instructions to the Aggregate Unit that represents the OOM Energy market.

  17. PR-40050 Aggregated LBE Down formula changeR4 • EMMS R4 LBEDNAGG formula • LPCRSDqviz =-1 * Σ(MAX(0,(MCPEiz - BPMqivz )) * Max(0, Min(OLqivz -MRqviz, NETDEQiv)))v * LBEAGiv • LPCRSDquiz = Payment to QSE for providing Balancing Energy Down from specific Aggregated unit to solve Local Congestion per QSE per interval per zone • MCPEiz = Market Clearing Price of Energy per interval per zone • BPMqivz = Decremental bid premium specified for that specific Aggregated unit per interval • OLqivz = Resource Plan output level submitted by the QSE for the Aggregated Unit containing the unit given the unit-specific instruction for that interval • MRqviz = Meter reading per Aggregated Unit per interval • NETDEQiv = The overall net direction per the instructions given to the Aggregated Unit results in a down direction • LBEAGiv = The percentage of the aggregated instructions to the Aggregate Unit that represents the OOM Energy market.

  18. PR-30163 (OOM Tool) • No PRR • Probable new Bill Determinants • No changes to Settlement formulas

  19. PR-30163 (OOM Tool) • The requirements for this project have not been fully defined • EMMS design has not been finalized yet • Changes to Settlements will result in the designed changes on the EMMS side

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