Title: Allow Change to Energy Offer Curve MW Amounts in the Adjustment Period (formerly "Allow Change to Energy Offer Curve MW Amounts in the Adjustment Period for Qualifying Facilities")
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Status: Approved on 09/20/2011
Effective Dates:



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Date Gov Body Action Taken Next Steps
09/20/2011 BOARD Approved
08/04/2011 TAC Recommended for Approval ERCOT Board consideration of NPRR321
07/21/2011 PRS Recommended for Approval TAC consideration of NPRR321
06/23/2011 PRS Recommended for Approval PRS Impact Analysis review
05/19/2011 PRS Deferred/Tabled PRS Impact Analysis review
04/21/2011 PRS Recommended for Approval PRS Impact Analysis review
03/24/2011 PRS Deferred/Tabled PRS language consideration

Voting Record

Date Gov Body Motion Result
09/20/2011 BOARD To approve NPRR321 as recommended by TAC in the 8/4/11 TAC Report. Passed
08/04/2011 TAC To recommend approval of NPRR321 as recommended by PRS in the 7/21/11 PRS Report. Passed
07/21/2011 PRS To endorse and forward the 6/23/11 PRS Report as amended by the 7/20/11 ERCOT comments, revised Impact Analysis and revised Cost Benefit Analysis for NPRR321 to TAC with a recommended priority of High and rank of 13.2. Passed
06/23/2011 PRS To endorse the 4/21/11 PRS Report as amended by the 5/17/11 Luminant Energy Company LLC comments and as revised by PRS and for NPRR321 to return to PRS for consideration of the Impact Analysis. Passed
05/19/2011 PRS To table NPRR321 for one month and to request that WMS have the QMWG review NPRR321 and examine potential impacts to the Day-Ahead Make-Whole Settlement mechanism. Passed
04/21/2011 PRS To recommend approval of NPRR321 as submitted. Passed
03/24/2011 PRS To table NPRR321 and to request that WMS review NPRR321. 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.


Status: Approved
Date Posted: Feb 10, 2011
Sponsor: Calpine
Urgent: No
Sections:, 5.5.2
Description: This Nodal Protocol Revision Request (NPRR) would provide the ability for Resources to change the amounts of power in their Energy Offer Curves in the Adjustment Period.
Reason: Market experience thus far has shown that for Resources that do not desire to be price takers on Output Schedules, the Energy Offer Curve submitted and struck in the Day-Ahead Market (DAM) may become unrealistic in Real-Time. This NPRR would allow a Resource with an Energy Offer Curve to change the MW amounts for all the price-quantity pairs to adjust for changes in physical facility capabilities and market conditions which occur in Real Time. This allows more efficient pricing to the market due to the Resource owner’s ability to more closely optimize the pricing of energy based on actual conditions affecting the Resource, such as ambient temperature and quantities of Ancillary Service products that were awarded to the Resource in the DAM.

Key Documents

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