PGRR #121 · Revision Request
PGRR121 Related to NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs
- ROS Aug 7 '25
- TAC Aug 27 '25
- BOARD Sep 22 '25
- PUCT Nov 6 '25
ReasonStrategic Plan Objective 1
Created2024-12-05
Approved2025-11-06
Sections Affected
6.2
Summary
This Planning Guide Revision Request (PGRR) establishes model quality test and unit model validation requirements for inverter-based Energy Storage Resources (ESRs) with a Standard Generation Interconnection Agreement (SGIA) executed on or after April 1, 2026.
Timeline
- Oct 31
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Nov 15
Listed without action at 1 meeting
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Dec 5
ROS ROS Meeting - Webex OnlyROSDeferred/Tabled Referred → DWG Referred → IBRWG“to table PGRR121 and refer the issue to the Dynamics Working Group (DWG) and Inverter-Based Resource Working Group (IBRWG)” — Passed→ Language Consideration
- Dec 11
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Dec 13
Listed without action at 9 meetings (Dec 13 '24 – May 1 '25)
- Jun 5
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Jul 10
ROS ROS Meeting - Webex OnlyROSDeferred/Tabled Urgent status“to grant PGRR121 Urgent status; and to table PGRR121” — Passed→ Language Consideration
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Aug 7
ROS ROS MeetingROSRecommended for Approval Amended by the Jun 4 '25 ERCOT comments“to recommend approval of PGRR121 as amended by the 6/4/25 ERCOT comments” — Passed→ Revision Request Consideration
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Aug 27
TAC TAC MeetingTACRecommended for Approval Amended by the Aug 22 '25 ERCOT comments“to recommend approval of PGRR121 as recommended by ROS in the 8/7/25 ROS Report as amended by the 8/22/25 ERCOT comments; and the 10/31/24 Impact Analysis” — Passed→ Revision Request Consideration
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Sep 22
BOARD Board of Directors MeetingBOARDRecommended for Approval“to recommend approval of PGRR121 as recommended by TAC in the 8/27/25 TAC Report” — Passed→ Revision Request Consideration
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Nov 6
PUCTPUCTApproved“to approve PGRR121 and accompanying ERCOT Market Impact Statement as presented in Project No. 54445, Review of Protocols Adopted by the Independent Organization” — Passed
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Posted since the last meeting