Market Information System Grid and Market Conditions

TAC Meeting by Webex Only

September 29, 2021
09:30 AM
Teleconference: 877-668-4493
Meeting number: 182 315 6564
Meeting password: AsN#2


TAC Standing Representatives intending to vote should join through Webex and have access to their company email.

  • Submit Alternate Representative or Proxy designations by 3PM no later than one day prior to the meeting
  • An email with a unique validation code will be sent to all TAC Standing Representatives and their designated Alternative Representative
    • To allow validation of your login and ensure your ability to vote in the meeting as a representative of your company, please copy and paste your login given in the email when logging into the WebEx
  • If you are using a phone for audio, please associate your phone to your name by using the "Call me" option (easiest) or the "Call in" option and enter your assigned Attendee ID when prompted
  • All votes will be conducted via roll call
  • Use the Chat function to queue for comments/motions (not Raise Hand or commenting from the phone) – reply to Everyone
  • Log in to Webex 15 minutes prior to the meeting start so that quorum can be established and logins can be validated



Antitrust Admonition

Clif Lange

9:30 a.m.


Approval of TAC Meeting Minutes (Vote)

Clif Lange

9:35 a.m.


August 27, 2021



TAC/TAC Subcommittee Structural and Procedural Review (Vote)

Clif Lange

9:40 a.m.


Alignment of TAC Goals and Approved Revision Requests


Subcommittee/Working Group/Task Force Assessment


2021 TAC Goals


Open Action Items



Emergency Conditions Issues List Review (Possible Vote)

Clif Lange

10:10 a.m.


Review of ERCOT Market Impact Statements and ERCOT Opinions

Ann Boren

10:30 a.m.


PRS Report (Vote)

Martha Henson

10:40 a.m.


NPRR1082, Emergency Response Service (ERS) Test Exception for Co-located ERS Loads


NPRR1087, Prohibit Participation of Critical Loads as Load Resources or ERS Resources - URGENT


NPRR1090, ERS Winter Storm Uri Lessons Learned Changes and Other ERS Items - URGENT


NPRR1093, Load Resource Participation in Non-Spinning Reserve - URGENT


Notice of Rejection – NPRR1056, Market Impact Generic Transmission Constraint (GTC) Notification



Other Binding Document Revision Requests (Vote)

Sandip Sharma

11:00 a.m.


OBDRR032, Non-Spin Changes Related to NPRR1093, Load Resource Participation in Non-Spinning Reserve


OBDRR033, ORDC Changes Related to NPRR1093, Load Resource Participation in Non-Spinning Reserve



Revision Requests Tabled at TAC (Vote)

Clif Lange

11:15 a.m.


OBDRR026, Change Shadow Price Caps to Curves and Remove Shift Factor Threshold


RRGRR030, Allow New Voltage Levels in Resource Registration Information



RMS Report

Jim Lee

11:25 a.m.


ROS Report (Vote)

Katie Rich

11:45 a.m.


NOGRR223, Add Phasor Measurement Recording Equipment Requirement to Modified Generating Facilities in Interconnection Process


NOGRR232, Related to NPRR1093, Load Resource Participation in Non-Spinning Reserve - URGENT


PGRR093, Replace Inadvertent Deletions in Section 5


PGRR094, Clarify Notification Requirement for Generator Construction Commencement or Completion


Major Transmission Elements (MTE) List



WMS Report

Resmi Surendran

12:05 p.m.


ERCOT Reports


12:25 p.m.


Under-Frequency Load Shedding (UFLS) Survey Results

Daniel Sanchez


Port Lavaca Area Improvement RPG Project (Possible Vote)

Fred Huang


Revisions to Boundary Threshold (Waive Notice - Vote)

John Bernecker  


Other Business


12:45 p.m.

  • TAC Review of Reliability Deployment Process Proxy Bid Curve (Section, Determination of Real-Time On-Line Reliability Deployment Price Adder)

Dave Maggio  


Combo Ballot (Vote)


12:55 p.m.




1:00 p.m.

Scheduled TAC Meetings