NOTICE DATE: June 10, 2011 NOTICE TYPE: M-A061011-01 NPRR SHORT DESCRIPTION: Implementation details of NPRR339 INTENDED AUDIENCE: QSEs and CRRAHs DAY AFFECTED: June 23, 2011 LONG DESCRIPTION: On June 23, 2011, ERCOT will partially implement Nodal Protocol Revision Request (NPRR) 339, Modifications to Heuristic Rules to Determine LMP at De-energized Electrical Bus and Treatment of CRR Offers at De-energized Settlement Points, which was approved by the ERCOT Board on April 19, 2011. This implementation will unbox the grey-boxed language in Protocol Section 4.5.1(9), DAM Clearing Process and Protocol Section 6.6.1, Real-Time Settlement Point Prices. NPRR339 extends the heuristic rules to determine the Locational Marginal Price (LMP) at de-energized Electrical Buses and changes the treatment of Congestion Revenue Right (CRR) offers when either the source or sink Settlement Point is de-energized in the Day-Ahead Market (DAM). 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. NPRR339 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/nprr/326-350/339/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. dh ############################ To unsubscribe from the NOTICE_PRR_SCR list: write to: mailto:[log in to unmask] or click the following link: http://lists.ercot.com/SCRIPTS/WA-ERCOT.EXE?SUBED1=NOTICE_PRR_SCR&A=1