Title Add Phasor Measurement Recording Equipment Location for Main Power Transformer for Intermittent Renewable Resource (IRR)
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Next Step
Status Approved on 10/07/2021
Effective Dates


Date Gov Body Action Taken Next steps
10/07/2021 PUCT Approved
08/27/2021 TAC Recommended for Approval Revision Request Consideration
08/05/2021 ROS Recommended for Approval Revision Request Consideration
07/08/2021 ROS Recommended for Approval Impact Analysis Consideration
06/03/2021 ROS Deferred/Tabled Language Consideration

Voting Record

Date Gov Body Motion Result
10/07/2021 PUCT to approve NOGRR227 and accompanying ERCOT Market Impact Statement as presented in Project No. 52307, Review of Rules Adopted by the Independent Organization in Calendar Year 2021 Passed
08/27/2021 TAC to recommend approval of NOGRR227 as recommended by ROS in the 8/5/21 ROS Report Passed
08/05/2021 ROS to endorse and forward to TAC the 7/8/21 ROS Report and the Revised Impact Analysis for NOGRR227 Passed
07/08/2021 ROS to recommend approval of NOGRR227 as submitted Passed
06/03/2021 ROS to table NOGRR227 and refer the issue to the Operations Working Group (OWG) Passed


Status: Approved
Date Posted: May 19, 2021
Sponsor: ERCOT
Urgent: No
Description: This Nodal Operating Guide Revision Request (NOGRR) allows for single phase current magnitude/angle data for an interconnected Intermittent Renewable Resource (IRR) over 20 MVA to be taken from either side of the main power transformer where turbines exist on a feeder(s) that were aggregated to two or more IRRs.
Reason: Addresses current operational issues

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