PGRR #120 · Revision Request

PGRR120 SSO Risk Reduction for Generator Interconnection

Approved sponsor ERCOT posted 2024-10-14 ercot.com

ReasonStrategic Plan Objective 1

Created2024-11-07

Approved2025-11-06

Sections Affected

5.2.10 (new) and 5.3.1

Summary

This Planning Guide Revision Request (PGRR) prevents generators from interconnecting to the ERCOT Transmission Grid if the generator would be radial to a series capacitor under N-1 conditions.

Timeline

Oct 14 '24
ROSFiled by ERCOT
- 120PGRR-01 SSO Prevention for Generator Interconnection 101424 Oct 14 '24 · Revision Request
- 120PGRR-02 Impact Analysis 101424 Oct 14 '24 · Staff Report
Nov 7 '24
ROS ROS Meeting
ROSDeferred/Tabled Tabled Referred → PLWG Referred → DWG
“To table PGRR120 and refer the issue to the Planning Working Group (PLWG) and Dynamics Working Group (DWG)” — Passed

→ ROS for consideration

Motion Carries 7.5–0 roll call
Nov 12 '24
PLWG PLWG Meeting
- 120PGRR-03 ROS Ballot 110724 Nov 11 '24 · Revision Request Ballot
- 120PGRR-04 ROS Report 110724 Nov 11 '24 · Committee Report
Dec 5 '24
Listed without action at 2 meetings (Dec 5 '24 – Dec 11 '24)
- ROS Meeting - Webex Only Dec 5 '24
- DWG Meeting - Webex Only Dec 11 '24
Dec 18 '24
PLWG PLWG Meeting - Webex Only
- 120PGRR-05 Southern Power Comments 121724 Dec 17 '24 · Revision Request Comments
Jan 9 '25
Listed without action at 1 meeting
- ROS Meeting - Webex Only Jan 9 '25
Jan 29 '25
PLWG PLWG Meeting
- 120PGRR-06 AEP Comments 012825 Jan 28 '25 · Revision Request Comments
Feb 6 '25
Listed without action at 1 meeting
- ROS Meeting - Webex Only Feb 6 '25
Feb 13 '25
DWG DWG Meeting - Webex Only
- 120PGRR-07 Lone Star Comments 020725 Feb 7 '25 · Revision Request Comments
- 120PGRR-08 Splight Comments 021325 Feb 13 '25 · Revision Request Comments
Mar 6 '25
Listed without action at 1 meeting
- ROS Meeting Mar 6 '25
Apr 3 '25
ROS ROS Meeting - Webex Only
- 120PGRR-09 Enel Green Power Comments 031425 Mar 14 '25 · Revision Request Comments
- 120PGRR-10 Smart Wires Comments 032525 Mar 25 '25 · Revision Request Comments
May 1 '25
ROS ROS Meeting
- 120PGRR-11 ERCOT Comments 041625 Apr 16 '25 · Revision Request Comments
Jun 5 '25
ROS ROS Meeting - Webex Only
ROSRecommended for Approval Recommended for approval Amended by the May 20 '25 PLWG comments
“To recommend approval of PGRR120 as amended by the 5/20/25 PLWG comments” — Passed

→ ROS for Impact Analysis consideration

Motion Carries 7.5–0 roll call
- 120PGRR-12 Lone Star and AEP Comments 051425 May 14 '25 · Revision Request Comments
- 120PGRR-13 PLWG Comments 052025 May 20 '25 · Revision Request Comments
Jul 10 '25
ROS ROS Meeting - Webex Only
ROSRecommended for Approval Recommended for approval Forwarded → TAC
“To endorse and forward to TAC the 6/5/25 ROS Report and 10/14/24 Impact Analysis for PGRR120” — Passed

→ TAC for consideration

Motion Carries 7.5–0 roll call
- 120PGRR-14 ROS Ballot 060525 Jun 9 '25 · Revision Request Ballot
- 120PGRR-15 ROS Report 060525 Jun 9 '25 · Committee Report
- 120PGRR-16 ROS Ballot 071025 Jul 10 '25 · Revision Request Ballot
- 120PGRR-17 ROS Report 071025 Jul 10 '25 · Committee Report
Jul 30 '25
TAC TAC Meeting - Webex Only
TACRecommended for Approval Recommended for approval Amended by the Jul 13 '25 ERCOT comments
“To recommend approval of PGRR120 as recommended by ROS in the 7/10/25 ROS Report as amended by the 7/13/25 ERCOT comments” — Passed

→ Board for consideration

Motion Passes 29–0 roll call
- 120PGRR-18 ERCOT Comments 071325 Jul 13 '25 · Revision Request Comments
Sep 22 '25
BOARD Board of Directors Meeting
BOARDRecommended for Approval Recommended for approval
“To recommend approval of PGRR120 as recommended by TAC in the 7/30/25 TAC Report” — Passed

→ PUCT for consideration
- 120PGRR-19 TAC Ballot 073025 Aug 1 '25 · Revision Request Ballot
- 120PGRR-20 TAC Report 073025 Aug 1 '25 · Committee Report
Nov 6 '25
PUCT
PUCTApproved Approved
“To approve PGRR120 and accompanying ERCOT Market Impact Statement as presented in Project No. 54445, Review of Protocols Adopted by the Independent Organization” — Passed
- 120PGRR-21 Board Report 092225 Sep 24 '25 · Committee Report
—
Posted since the last meeting
- 120PGRR-22 PUCT Report 110625 Nov 10 '25 · Committee Report