August 25, 2016 TAC Update to COPS Michelle Trenary September 14, 2016

PRS Update NPRR753, Allow Advanced Metering System (AMS) Data Submittal Process for Transmission and Distribution Service Provider (TDSP)-Read Non-Modeled Generators Approved NPRR760, Calculation of Exposure Variables For Days With No Activity Approved NPRR773, Broadening Scope of Acceptable Letter of Credit Issuers Tabled NPRR778, Modifications to Date Change and Cancellation Evaluation Window Approved NPRR782, Settlement of Infeasible Ancillary Services Due to Transmission Constraints Approved NPRR785, Synchronizing Wind-powered Generation Resource (WGR) and PhotoVoltaic Generation Resource (PVGR) Current Operating Plans (COPs) with the Short Term Wind and PhotoVoltaic Forecasts Approved NPRR786, Consumption Data Adjustments for Negative Load Approved NPRR787, Removal of Recipient Name Requirement for Verbal Dispatch Instruction (VDI) Confirmations Approved 2

Revision Requests Previously Tabled by TAC NOGRR150, Alignment with NPRR747, Revision of Voltage Control Requirements Approved NPRR779, Clarifies References to Texas Reliability Entity and Independent Market Monitor (IMM) Approved NPRR781, Updates to Nodal Protocol Section 18, Load Profiling, to Align with Current Market Processes Remains Tabled 3

ROS Update NOGRR158, Alignment with Protocol Limits on Responsive Reserve Service (RRS) Provided by Hydro Resources Approved NOGRR159, Alignment with NPRR779, Clarifies References to Texas Reliability Entity and Independent Market Monitor Tabled PGRR047, Full Interconnection Study (FIS) Department of Defense Declaration Approved PGRR048, Alignment with NPRR779, Clarifies References to Texas Reliability Entity and Independent Market Monitor Approved PGRR049, Generation Interconnection or Change Request (GINR) Application and Fee Submittal Approved 4

WMS Update VCMRR013, Clarifications to Verifiable Cost Appeals Process Tabled 5

Unregistered DG Installed Capacity Quarterly Report COPS Update Unregistered DG Installed Capacity Quarterly Report   TAC requested an update on the ERCOT matrix action items resulting from the DREAM Task Force TAC requested a brief overview of the different re ports related to DG at the October 2016 TAC meeting 6

ERCOT Network Switch Failure Network Switch Failure caused a disconnection between the Energy Management System (EMS) and the Market Management System (MMS) Resulted in SCED failure August 25, 2016 Problem was identified and corrected promptly 08:27 - At 08:10 ERCOT issuing a Watch due to a SCED failure. ERCOT may issue Emergency Base Points until the issues resolved. 08:35 - ERCOT has cancelled the following notice: At 08:10 ERCOT is issuing a Watch due to a SCED failure. ERCOT may issue Emergency Base Points until the issue is resolved. 7

Questions? 14