NOTICE DATE:  May 16, 2012

NOTICE TYPE:  M-A051612-01 NPRR

SHORT DESCRIPTION:  Implementation details of NPRR451

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  June 1, 2012

LONG DESCRIPTION:  On June 1, 2012, ERCOT will implement Nodal Protocol Revision Request (NPRR) 451, Implementation of New P.U.C. SUBST. Rule 25.507, Electric Reliability Council of Texas (ERCOT) Emergency Response Service (ERS), which was approved by the ERCOT Board on April 17, 2012. NPRR451 is required to implement the provisions of P.U.C. SUBST. Rule 25.507.

Project 39948, Rulemaking to Amend SUBST. Rule 25.507, Relating to Electric Reliability Council of Texas (ERCOT) Emergency Interruptible Load Service (EILS), which was adopted by the Public Utility Commission of Texas (PUCT) on March 22, 2012, repealed P.U.C. SUBST Rule 25.507 provisions governing EILS to be replaced with the renamed product ERS. The purpose of ERS, as stated in Project 39948, is to “promote reliability during energy emergencies through provisions that provide ERCOT flexibility in the implementation and administration of ERS.”

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. 

NPRR451 and associated documents can be found on the ERCOT website, under Market Rules, at http://www.ercot.com/mktrules/issues/nprr/451-475/451/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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