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WMS Report To TAC

This report provides an overview of key working group reports, staff reports, TAC assignments, and market activities for December 2008. It covers forecast accuracy, outage evaluation, cost recovery, and more.

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WMS Report To TAC

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  1. WMS Report To TAC December 2008

  2. In Brief • Three Working Group Reports • One Task Force Reports • Two Staff reports • Two TAC Assignments • Report from the IMM

  3. Working Group ReportsQSEWG • WGRPP Forecast process improvements • WGRPP Forecast accuracy • Non-spin deployments from off line units • Ramp rate constraints of a QSE when ERCOT ends an OOME instruction

  4. Working Group ReportsCMWG • Competitive Constraint Test for Nodal • Historical Outages Known vs. in TCR Model • Outage Evaluation Improvements

  5. Working Group ReportsVCWG • Cost Recovery due to cancellation of RUC • Fuel Costs in RUC • Who submits (QSE vs. Resources) • General Corrections to VC

  6. Task Force Report Cost Allocation • TAC request to look into Ancillary Service Cost Allocation with a report back in January 2009 • Scope control issues • Elegance of current solution

  7. ERCOT Staff Reports • PPL Planning • SCR751, Nodal Shadow Price Cap

  8. ERCOT Staff Reports • PPL Planning • SCR751, Nodal Shadow Price Cap

  9. Other WMS activity • IMM State of the Market Report • TAC Assignment on Market Participant Survey • WMS representative to the RTWG • Reconsider PRR776

  10. Other WMS activity • IMM State of the Market Report • TAC Assignment on Market Participant Survey • WMS representative to the RTWG • Reconsider PRR776

  11. Other WMS activity • IMM State of the Market Report • TAC Assignment on Market Participant Survey • WMS representative to the RTWG • Reconsider PRR776

  12. Other WMS activity • IMM State of the Market Report • TAC Assignment on Market Participant Survey • WMS representative to the RTWG • Reconsider PRR776

  13. BES Substitution & NSRS Deployment Floor • Modify NSRS deployment procedures such that NSRS scheduled from units that are (1) online; or (2) offline and qualified to provide UBES have an obligation to offer such NSRS capacity in the UBES market. • Offline resources providing NSRS that are not qualified to provide UBES will continue to be deployed via instruction from ERCOT. • An offer floor of $FIP * 18 will be applied to the quantity of NSRS obligation from online resources that is offered as UBES in each zone. • PRR 650 would be repealed and no further price corrections would be applied. • BES Substitution above except that when actual 30 minute NSRS is deployed,a floor price for MCPE will be established equal to 120 + 15 * FIP.

  14. Upon examination of the issues around PRR 776 WMS finds that the BES Substitution & NSRS Deployment Floor Methodology proposal is a better alternative than PRR776 and endorses it. In addition WMS recommends that the ERCOT market move forward expeditiously with shortage pricing mechanism similar to that proposed by Independent Market Monitor (IMM). WMS has concerns that are not resolved regarding the timely implementation of this proposed solution in relation to PRR776. If the Impact Analysis for this alternative estimates a lengthy implementation period, a temporary alternative may be needed.

  15. WMS Report To TAC

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