NOTICE DATE:  September 10, 2012

NOTICE TYPE:  M-A091012-01 NPRR

SHORT DESCRIPTION:  Implementation details for NPRR347, NPRR391, and NPRR400

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  November 9, 2012 

LONG DESCRIPTION:  On November 9, 2012, ERCOT will implement Nodal Protocol Revision Request (NPRR) 347, Single Daily Settlement Invoice and Updates to Credit Calculations, including addition of a Minimum Collateral Exposure Component (formerly “Counter-Party Invoice and Single Daily Settlement Invoice”), NPRR391, Shortening RTM Settlement and Payment Timeline and Eliminate ACH as a Mode of Payment, and NPRR 400, Eliminate Unsecured Credit for CRR Auctions and for Future Credit Exposure and Eliminate Netting of FCE with CCE.

NPRR347, which was approved by the ERCOT Board on August 16, 2011, combines the Day-Ahead Market (DAM) and Real-Time Market (RTM) Invoices into a Single Daily Settlement Invoice and eliminates the separate DAM and RTM Late Fee Invoices by combining them into a single Late Fee Invoice. The first Settlement Invoice will be posted on November 12, 2012. Changes will also be implemented to credit formulas and the minimum collateral calculation will be automated.  

NPRR391, which was approved by the ERCOT Board on October 18, 2011, and partially implemented in December 2011 to shorten the timeline for the Real-Time Initial Statement by one Business Day, will be fully implemented to eliminate the option of making payments using Automated Clearing House (ACH) funds and to shorten cash clearing for the Settlement Invoices by one Bank Business Day.

NPRR400, which was approved by the ERCOT Board on October 18, 2011, requires the:  a) Future Credit Exposure (FCE) component of the credit collateral calculation and b) Congestion Revenue Right (CRR) Auction credit limit be collateralized with cash, letter of credit or surety bond. Unsecured credit limits and unsecured credit limits through guarantee agreements will no longer be available to cover exposure related to the FCE calculation and the CRR Auction.

XSDs, XSLs including the updated Late Fee Invoice XSL, sample Settlement Invoice, and sample Late Fee Invoice files for NPRR347 can be found on the ERCOT website, under Services, at http://www.ercot.com/services/mdt/xsds/.

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.

NPRR347 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/nprr/326-350/347/index. A transition plan presentation can be found on the Communications and Settlements Working Group (CSWG) meeting page at http://www.ercot.com/content/meetings/cswg/keydocs/2012/0716/NPRR347_transition_plan.ppt. XSDs, XSLs including the updated Late Fee Invoice XSL, sample Settlement Invoice files, and sample Late Fee Invoice files for NPRR347 can be found on the ERCOT website, under Services, at http://www.ercot.com/services/mdt/xsds/.

NPRR391 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/nprr/376-400/391/index.

NPRR400 and associated documents can be found on the ERCOT website, under Market Rules, http://www.ercot.com/mktrules/issues/nprr/376-400/400/index.

Information on upcoming releases can be found on the ERCOT Multi Year Project Priority List (PPL) at http://www.ercot.com/services/projects/.

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].

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