NPRR911

Summary

Title: Improved Calculation of Real-Time LMPs at Logical Resource Nodes for On-Line Combined Cycle Generation Resources
Next Group:
Next Step:
Status: Approved on 02/12/2019

Action

Date Gov Body Action Taken Next Steps
02/12/2019 Board of Directors Approved
01/30/2019 TAC Recommended for Approval Board for consideration
01/17/2019 PRS Recommended for Approval TAC for consideration
12/13/2018 PRS Recommended for Approval PRS for Impact Analysis review

Voting Record

Date Gov Body Motion Result
02/12/2019 Board of Directors To approve NPRR911 as recommended by TAC in the 1/30/19 TAC Report Passed
01/30/2019 TAC To recommend approval of NPRR911 as recommended by PRS in the 1/17/19 PRS Report Passed
01/17/2019 PRS To endorse and forward to TAC the 12/13/18 PRS Report and Impact Analysis for NPRR911 with a recommended priority of 2019 and rank of 2660 Passed
12/13/2018 PRS To recommend approval of NPRR911 as submitted Passed

Vote tallies here reflect individual votes, not the weight of the votes by market segment. Affirmative votes are not recorded in these vote tallies. For additional details on the voting record, please consult the Recommendation or Action Report, or the official vote tally if available, as posted in the key documents.

Background

Status: Approved
Date Posted: 11/28/2018
Sponsor: ERCOT
Urgent: No
Sections: 6.6.1.1
Description: This Nodal Protocol Revision Request (NPRR) follows NPRR890, Correction to Calculation of Real-Time LMPs at Logical Resource Node for On-Line Combined Cycle Generation Resources. The intent of NPRR890 was to align Protocol language with ERCOT’s systems. The current Protocol language calculates the Locational Marginal Price (LMP) for a Combined Cycle Generation Resource (“CCGR”) using a weighted average of the Shift Factors for each Generation Resource in the On-Line CCGR using the Real-Time telemetered outputs of the Generation Resources to calculate the weight factor. This language reverts the applicable Protocol sections back to previous language for determining Real-Time LMPs of the logical Resource Nodes for On-Line CCGRs. Reverting the Protocol language back results in those CCGR LMPs being based on a weighted average of LMPs at the Resource Node for each of the Generation Resources in the On-Line CCGRs, using the Real-Time telemetered outputs of the Generation Resources to calculate the weight factor. This NPRR also retains the language from NPRR890 that clarifies the formula for Off-Line CCGRs.
Reason: Market efficiencies or enhancements

Key Documents