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Subject:	M-D112811-01 Implementation Details of NPRR321
From:	ERCOT Client Services <[log in to unmask]>
Date:	Mon, 28 Nov 2011 14:34:11 +0000
Content-Type:	multipart/alternative
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NOTICE DATE:  November 28, 2011
NOTICE TYPE:  M-D112811-01 NPRR
SHORT DESCRIPTION:  Implementation details for NPRR321
INTENDED AUDIENCE:  ERCOT Market Participants
DAY AFFECTED:  December 9, 2011
LONG DESCRIPTION:  On December 9, 2011, ERCOT will partially implement Nodal Protocol Revision Request (NPRR) 321, 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"), which was approved by the ERCOT Board on September 20, 2011.
NPRR321 allows a Qualified Scheduling Entity (QSE) representing a Day-Ahead Market (DAM) or Reliability Unit Commitment (RUC)-committed Resource with an Energy Offer Curve (EOC) to change the EOC for any committed Operating Hour. QSEs cannot change the Startup Offer or Minimum-Energy Offer for any Operating Hour for a DAM or RUC-committed Resource.
This implementation will unbox the grey-boxed language in Protocol Section 4.4.9.3, Energy Offer Curve, pertaining to NPRR321.
ADDITIONAL INFORMATION:  Pursuant to Protocol Section 21.6, Nodal Protocol Revision Implementation, ERCOT is required to provide notice as soon as practicable, but no later than ten days prior to implementation.
NPRR321 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/nprr/301-325/321/index.
CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask]<mailto:[log in to unmask]>.
If you are receiving email from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.




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