PGRR002

    Summary

    Title: New Planning Guide Section 2, Definitions and Acronyms, and Section 8, Planning Reserve Margin (PRM) and Associated Change Process for the PRM (formerly "New Planning Guide Section 2, Definitions and Acronyms, and Section 8, Planning Reserve Margin")
    Next Group:
    Next Step:
    Status: Approved on 04/19/2011
    Effective Date: 05/01/2011

    Action

    Date Gov Body Action Taken Next Steps
    04/19/2011 Board of Directors Approved
    03/03/2011 TAC Recommended for Approval ERCOT Board Consideration
    02/18/2011 ROS Recommended for Approval TAC Consideration
    01/21/2011 PLWG Recommended for Approval ROS Consideration
    12/13/2010 PLWG Recommended for Approval IA Review

    Voting Record

    Date Gov Body Motion Result
    04/19/2011 Board of Directors T approve PGRR002 as recommended by TAC in the 3/3/11 TAC Report Passed
    03/03/2011 TAC To recommend approval of PGRR002 as recommended by ROS in the 2/18/11 ROS Report Passed
    02/18/2011 ROS To recommend approval of PGRR002 as revised by the 2/4/11 ERCOT comments Passed
    01/21/2011 PLWG Consensus to endorse and forward the 12/13/10 PLWG Report and the Impact Analysis for PGRR002 to ROS
    12/13/2010 PLWG Consensus to recommend approval of PGRR002 as revised by the PLWG

    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.

    Background

    Status: Approved
    Date Posted: 08/29/2017
    Sponsor: PLWG
    Urgent: No
    Sections: 2 (new), 2.1 (new), 2.2 (new), 8 (new), 8.1 (new), 8.2 (new), 8.3 (new), 8.3.1 (new), 8.3.2 (new)
    Description: This Planning Guide Revision Request (PGRR) incorporates the following into the Planning Guide: (1) Planning Reserve Margin (PRM) and the minimum PRM requirement. (2) The methodology to be used by ERCOT to calculate its Seasonal (i.e., Summer and Winter) PRM. This methodology is based on the ERCOT reserve margin calculation methodology developed by the Generation Adequacy Task Force (GATF) and approved by the ERCOT Board in May 2005. (3) Changes in the PRM calculation methodology developed by the GATF and approved by TAC in February 2010. (4) Current ERCOT reserve margin planning criterion of 13.75%. (5) New Section 2 to the Planning Guides which adds relevant terms and definitions used in the Planning Guide not defined in the Protocols. To allow for inclusion of the definitions and acronyms into the Planning Guide as Section 2, the current Section 2, Process for Planning Guide Revision, will be renumbered as Section 1, Process for Planning Guide Revision. (6) Changes in Section 2.1 to incorporate an administrative change process for the PRM.
    Reason: Currently, the definition of the PRM, current minimum PRM planning criterion (13.75%), and methodology necessary to calculate the PRM are not included in the Protocols, Operating Guides or Planning Guide. Because of the market and reliability impacts of the PRM, it is necessary for these items to be included in the Protocols, Operating Guides or Planning Guide. The Planning Working Group (PLWG) recommends that this information be inserted into the ERCOT Planning Guide to ensure visibility to the market and to provide for a structured change process to ensure that any modification to the definition or calculation of the PRM can be fully vetted by Market Participants. A central location for terms and definitions specific to the Planning Guides is needed.

    Key Documents