NPRR #198 · Revision Request
NPRR198 Load Used in RMR Studies
ReasonThe current process around how RMR studies are conducted is not defined in the Nodal Protocols. Providing guidance for the process ensures that a Load level that ERCOT actually anticipates will be used for the RMR study. Presently, ERCOT typically uses the aggregate non-coincident peak Loads provided by the transmission owners that are used to develop the five-year Steady State Working Group (SSWG) planning cases. Because these Loads are both peak and non-coincident, they tend to overestimate actual Load during any single period. Employing a process that uses a Load forecast that ERCOT actually anticipates to occur in the next 12 months will ensure that RMR is procured only when needed to serve Load that will likely occur. The present process of using a Load forecast that significantly overestimates load could result in procuring RMR when it is not needed. Procuring RMR when it is not needed increases costs to Load and undermines opportunities for competitive generation in ERCOT’s energy-only market.
Created2009-11-19
Approved2010-03-23
Sections Affected
3.14.1.2
Summary
This Nodal Protocol Revision Request (NPRR) would provide guidance to ERCOT to use the peak Load forecast posted pursuant to P.U.C. Subst. R. 25.505, Resource Adequacy in the Electric Reliability Council of Texas Power Region, for the next 12 months for the Reliability Must-Run (RMR) study, except with respect to the Load in the RMR local area. This aligns the Load forecast period with the RMR contract period and ensures that the Load forecast used for the analysis is one with a reasonable probability of occurrence. This NPRR also proposes non-substantive administrative changes, shown with the author "ERCOT Market Rules."
Action Log 6 milestones
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Jan 21
PRSRecommended for Approval→ TAC consideration of NPRR198
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Feb 4
TACDeferred/Tabled→ TAC consideration of NPRR198
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Mar 4
TACRecommended for Approval→ ERCOT Board consideration of NPRR198
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Mar 23
BOARDApproved
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Dec 17
PRSRecommended for Approval→ PRS Impact Analysis review
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Nov 19
PRSDeferred/Tabled→ PRS language consideration
Amendments
| Date | Body | Motion | Result |
|---|---|---|---|
| Feb 4 '10 | TAC | To revise the 1/21/10 PRS Report and to table NPRR198 for one month. | Passed |
| Mar 4 '10 | TAC | To recommend approval of NPRR198 as revised by TAC on 2/4/10. | Passed |
| Dec 17 '09 | PRS | To recommend approval of NPRR198 as amended by the 11/13/09 PSEG TX comments. | Passed |
Documents 11
| Name | Type | Posted | Classification |
|---|---|---|---|
| 198NPRR-01 Load Used in RMR Studies 111009 | doc | Nov 10 '09 | Revision Request |
| 198NPRR-02 CEO Revision Request Review 111009 | doc | Nov 10 '09 | Revision Request Comments |
| 198NPRR-03 ERCOT Comments 111109 | doc | Nov 11 '09 | Revision Request Comments |
| 198NPRR-04 PSEG TX Comments 111309 | doc | Nov 13 '09 | Revision Request Comments |
| 198NPRR-05 PRS Action Report 111909 | doc | Nov 23 '09 | Committee Report |
| 198NPRR-06 PRS Recommendation Report 121709 | doc | Dec 18 '09 | Committee Report |
| 198NPRR-07 Impact Analysis 010410 | doc | Jan 4 '10 | Staff Report |
| 198NPRR-08 PRS Report 012110 | doc | Jan 25 '10 | Committee Report |
| 198NPRR-09 TAC Report 020410 | doc | Feb 5 '10 | Committee Report |
| 198NPRR-10 TAC Report 030410 | doc | Mar 5 '10 | Committee Report |
| 198NPRR-11 Board Report 032310 | doc | Mar 23 '10 | Committee Report |
Meetings That Took It Up 6
| Date | Meeting | Committee | Status |
|---|---|---|---|
| Mar 4 '10 | TAC Meeting | TAC | Concluded |
| Feb 4 '10 | TAC Meeting | TAC | Concluded |
| Jan 21 '10 | PRS Meeting | PRS | Concluded |
| Jan 11 '10 | Joint Credit Work Group and Market Credit Working Group Meeting | CREDITWG | Concluded |
| Dec 17 '09 | PRS Meeting | PRS | Concluded |
| Nov 19 '09 | PRS Meeting | PRS | Concluded |