Title: Implementation of New P.U.C. Subst. Rule 25.507, Electric Reliability Council of Texas (ERCOT) Emergency Response Service (ERS)
Next Group:
Next Step:
Status: Approved on 04/17/2012
Effective Dates:


Date Gov Body Action Taken Next Steps
04/17/2012 BOARD Approved
04/05/2012 TAC Recommended for Approval ERCOT Board Consideration
03/29/2012 PRS Recommended for Approval TAC Consideration
03/22/2012 PRS Deferred/Tabled PRS Langauge Consideration

Voting Record

Date Gov Body Motion Result
04/17/2012 BOARD To approve NPRR451 as recommended by TAC in the 4/5/12 TAC Report and as amended by the 4/9/12 ERCOT comments Passed
04/05/2012 TAC To recommend approval of NPRR451 as recommended by PRS in the 3/29/12 PRS Report and as amended by the 4/3/12 ERCOT comments Passed
03/29/2012 PRS To recommend approval of NPRR451 as amended by the 3/27/12 ERCOT comments as revised by PRS and to forward NPRR451 to TAC Passed
03/22/2012 PRS To table NPRR451 until the 3/29/12 Special PRS meeting 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: Mar 15, 2012
Sponsor: ERCOT
Urgent: Yes
Sections: 2.1, 2.1, 3.14, 3.14.3, (new), (new), (new), (new),,,, 6.6.11,,, 8.1.3,, (new), (new), (new), (new), (new), (new), (new),
Description: This NPRR is required to implement the provisions of the newly revised P.U.C. Subst. R. 25.507, Electric Reliability Council of Texas (ERCOT) Emergency Interruptible Load Service (EILS). Project 39948, Rulemaking to Electric Reliability Council of Texas (ERCOT) Emergency Interruptible Load Service (EILS), was adopted by the Public Utility Commission of Texas (PUCT) on March 22, 2012.
Reason: Project 39948 proposes a repeal of P.U.C. Subst. Rule 25.507 provisions governing EILS, to be replaced with the renamed product Emergency Response Service (ERS). The purpose of ERS, as stated in the Project 39948, is to "promote reliability during energy emergencies through provisions that provide ERCOT flexibility in the implementation and administration of ERS." A large portion of the existing Protocols related to EILS will be maintained over the transition to ERS. The most significant changes enabled by the new P.U.C. Subst. Rule 25.507 and by this NPRR are as follows: Allows participation by generators and defines the types of generation units that will be eligible to participate and establishes performance criteria for deployment events, availability, and testing. The minimum amount that may be offered for ERS is changed from one MW to one-tenth (0.1) MW. The current ceiling of 1,000 MW for procurement of ERS is removed. Establishes processes for enabling ERCOT to initiate additional ERS Contract Periods in cases where ERS Resources’ obligations are exhausted, such as they were during the February 2-3, 2011, EILS deployment. Qualified Scheduling Entities (QSEs) will be allowed to designate ERS Resources for automatic renewal, under similar terms as the original contract, in order to maintain the maximum number of reliability tools during sustained weather events or other capacity-short situations. Creates a more equitable system for compliance with the Protocols by requiring ERCOT to evaluate QSE ERS portfolio performance as the first step in determining compliance. Deletes Appendices A and B of Section 22G - The provisions of these contract-related documents are adequately covered elsewhere and are not required to be part of the Nodal Protocols.

Key Documents

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