PGRR #121 · Revision Request

PGRR121 Related to NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs

Approved Urgent sponsor ERCOT posted 2024-10-31 ercot.com

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 '24
ROSFiled by ERCOT
- 121PGRR-01 Related to NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs 103124 Oct 31 '24 · Revision Request
- 121PGRR-02 Impact Analysis 103124 Oct 31 '24 · Staff Report
Nov 15 '24
Listed without action at 1 meeting
- IBRWG Meeting - Webex Only Nov 15 '24
Dec 5 '24
ROS ROS Meeting - Webex Only
ROSDeferred/Tabled 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

Motion Carries 7.5–0 roll call
Dec 11 '24
DWG DWG Meeting - Webex Only
- 121PGRR-03 ROS Ballot 120524 Dec 9 '24 · Revision Request Ballot
- 121PGRR-04 ROS Report 120524 Dec 9 '24 · Committee Report
Dec 13 '24
Listed without action at 9 meetings (Dec 13 '24 – May 1 '25)
- IBRWG Meeting - Webex Only Dec 13 '24
- ROS Meeting - Webex Only Jan 9 '25
- IBRWG Meeting - Webex Only Jan 17 '25
- ROS Meeting - Webex Only Feb 6 '25
- DWG Meeting - Webex Only Feb 13 '25
- IBRWG Meeting - Webex Only Feb 21 '25
- ROS Meeting Mar 6 '25
- ROS Meeting - Webex Only Apr 3 '25
- ROS Meeting May 1 '25
Jun 5 '25
ROS ROS Meeting - Webex Only
- 121PGRR-05 ERCOT Comments 060425 Jun 4 '25 · Revision Request Comments
Jul 10 '25
ROS ROS Meeting - Webex Only
ROSDeferred/Tabled Urgent status Tabled
“to grant PGRR121 Urgent status; and to table PGRR121” — Passed

→ Language Consideration

Motion Carries 7.5–0 roll call
Aug 7 '25
ROS ROS Meeting
ROSRecommended for Approval Recommended 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

Motion Carries 6.5–1 (4 abstain) roll call
- 121PGRR-06 ROS Ballot 071025 Jul 15 '25 · Revision Request Ballot
- 121PGRR-07 ROS Report 071025 Jul 15 '25 · Committee Report
Aug 27 '25
TAC TAC Meeting
TACRecommended for Approval Recommended 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

Motion Passes 27–0 (3 abstain) roll call
- 121PGRR-08 ROS Ballot 080725 Aug 12 '25 · Revision Request Ballot
- 121PGRR-09 ROS Report 080725 Aug 12 '25 · Committee Report
- 121PGRR-10 ERCOT Comments 082225 Aug 22 '25 · Revision Request Comments
- 121PGRR-11 Tesla Comments 082225 Aug 22 '25 · Revision Request Comments
Sep 22 '25
BOARD Board of Directors Meeting
BOARDRecommended for Approval Recommended for approval
“to recommend approval of PGRR121 as recommended by TAC in the 8/27/25 TAC Report” — Passed

→ Revision Request Consideration
- 121PGRR-12 TAC Ballot 082725 Sep 2 '25 · Revision Request Ballot
- 121PGRR-13 TAC Report 082725 Sep 2 '25 · Committee Report
Nov 6 '25
PUCT
PUCTApproved Approved
“to approve PGRR121 and accompanying ERCOT Market Impact Statement as presented in Project No. 54445, Review of Protocols Adopted by the Independent Organization” — Passed
- 121PGRR-14 Board Report 092225 Sep 24 '25 · Committee Report
—
Posted since the last meeting
- 121PGRR-15 PUCT Report 110625 Nov 10 '25 · Committee Report