January 10, 2017 Retail Market Subcommittee (RMS) Update to COPS Kathy Scott January 18, 2017

RMS Leadership and Accomplishments Election of 2017 RMS Chair and Vice Chair (Vote) Kathy Scott – CenterPoint Energy - Chair Rebecca Reed Zerwas – NRG – Vice Chair 2016 RMS Goals & Accomplishments Report Card January 18, 2017 RMS Update to COPS

New Revision Requests (Vote) RMGRR144, Elimination of REP-Specific Switch Hold Lists This Retail Market Guide Revision Request (RMGRR) eliminates the requirement for Transmission and/or Distribution Service Providers (TDSPs) to maintain a secure list by Retail Electric Provider (REP) Data Universal Numbering Systems (DUNS) of all Electric Service Identifiers (ESI IDs) with switch holds. TX SET recommended Approval of RMGRR144 during SET’s leadership’s update to RMS Motion to Approve was Unanimous Impact Analysis (IA) will return to RMS on 2/7/17 January 18, 2017 RMS Update to COPS

ERCOT Updates: Incident Report Highlights: Service Availability –December Retail Market IT systems met all SLA targets  Incidents & Maintenance – December 01/03/17 – ERCOT renewed/replaced the NAESB.ERCOT.com SSL digital certificate No action is typically required of Market Participants for this type of certificate renewal TXUE experienced errors which were resolved by downloading the new certificate and installing it into their trusted key store No other issues were reported by Market Participants ERCOT has traditionally sent Market Notices for this type of change, but failed to do so in this instance For future changes of this type, ERCOT will ensure that a Market Notice is sent ERCOT planned to meet with TDTMS, CSWG and MDWG to develop final draft recommendations for 2017 ERCOT’s Retail and Market Transparency Service Level Agreements (SLAs) January 18, 2017 RMS Update to COPS

ERCOT Updates: Flight 0217 Schedule Flight 0217 Adhoc Schedule Flight 0217 signup begins 01/11/17 Flight 0217 signup deadline is 01/18/17 (Adhoc, 02/24/17 for Current MPs Only, subject to Flight Administrator and TDSPs’ Approval) Connectivity testing begins 01/24/17 Day 1 transactions begin 02/13/17 Flight 0217 is scheduled to conclude on 02/24/17 (Contingency/Adhoc Period until 04/07/17) Simulated (SIM) Dates will not be used in Flight 0217 Flight 0217 Adhoc Schedule Adhoc signup deadline is 02/24/17 Adhoc connectivity testing begins 02/27/17 Adhoc testing begins no later than 03/24/17 All scripts to be completed by 04/07/17   January 18, 2017 RMS Update to COPS

ERCOT Updates: Inadvertent Gain (IAG) or Loss (IAL) Report http://ercot.com/content/wcm/key_documents_lists/108470 /08._Inadvertent_Stats_-_October_2016.pptx Action Item: Discussion at RMS led to additional tweaks were needed to the reporting as it relates to the 1% threshold. Market Participants will work through TDTMS to make the necessary changes for recommendation to RMS. January 18, 2017 RMS Update to COPS

ERCOT Updates: ERCOT LSE Activity Report & Error Code Updates Associated with NPRR753/RMGRR134 http://ercot.com/content/wcm/key_documents_lists/108470/08._867_0 3_Error_Codes_Document_v1.2.xls http://ercot.com/content/wcm/key_documents_lists/108470/08._Interva l_Data_LSE_Activity_Report_v1.2.xls http://ercot.com/content/wcm/key_documents_lists/108470/08._Interva l_Data_LSE_Error_Codes_v1.3.xls http://ercot.com/content/wcm/key_documents_lists/108470/08._TDSP ReadGeneration_Formv4.1.xls January 18, 2017 RMS Update to COPS

ERCOT Updates: Retail Project(s) Update http://ercot.com/content/wcm/key_documents_lists/108470 /08._RMS_January_2017_Project_Update.pptx “NPRR778 - Modifications to Date Change and Cancellation Evaluation Window” is currently scheduled for 10/31-11/2/17 Implementation instead of 1st or 2nd Quarter 2017. Troy Anderson (ERCOT) will review this project’s schedule again to determine if implementation could be scheduled sooner in 2017. January 18, 2017 RMS Update to COPS

Working Group/Taskforces Updates Texas SET (TX SET): Reviewed and recommended language changes for Draft RMGRR, Elimination of TDSP Requirement to Maintain a Secure List, by REP DUNS, of All ESI IDs with Switch Holds Completed Market Continuity Workshop Discussions Texas Data Transport and MarkeTrak Systems (TDTMS) SCR786 Testing Environment Update & Discussion Go-live completed on schedule on December 12, 2016 SCR786 User Orientation Documentation Draft RMGRR – Buyer’s Remorse TDTMS reviewed twice, but could not reach consensus for endorsement to RMS – the RMGRR Sponsor will submit to RMS. MarkeTrak Upgrade Update (No change to Functionality) January 18, 2017 RMS Update to COPS

Working Group/Taskforces Updates Retail Market Training Taskforce (RMTTF) Upcoming Retail Instructor Led Classes AUSTIN Georgetown Library Retail 101 – Tuesday, January 31, 2017 MarkeTrak 101 – Wednesday, February 1, 2017 DALLAS Oncor Retail 101 – Wednesday, May 3, 2017 Inadvertent Gain Training – Thursday, May 4,, 2017 HOUSTON CenterPoint Energy Retail 101 - Tuesday, September 26, 2017 Inadvertent Gain Training - Wednesday, September 27, 2017 587 Market Participants have reviewed or completed the online modules Largest ERCOT Training participation of any instructor led training course with over 500 Market Participants attending in person or via WebEx: RETAIL 101 – 341 attendees (3 classes) MarkeTrak 101 – 157 attendees (2 classes) January 18, 2017 RMS Update to COPS

Working Group/Taskforces Updates Advanced Metering Working Group (AMWG) AMSR Cycle Read Analysis – LSE vs. 867_03 Monthly Scope limited to July AMSR Cycle Reads where the kWh delta was greater than +/- 500 kWh 963 ESI IDs identified 937 ESI IDs root cause determined 26 ESI IDs still under investigation January 18, 2017 RMS Update to COPS

SMT Statistics Year to Year Comparison: January 18,, 2017 RMS Update to COPS

“Other Business” Digital Certification Renewal Process Discussion http://ercot.com/content/wcm/key_documents_lists/108470/18._Digital_Certificates_Renewal_process.pptx Action Item: ERCOT will take RMS discussions and/or suggestions internally to determine what items can be streamlined or identify potential system improvements, which may require an SCR. ERCOT stated it may take 2 months to complete their internal investigations and planned to provide feedback to RMS. Also a suggestion was made for ERCOT to develop online training modules that includes some tips and tricks to assist Market Participants and/or their USA’s with creating, renewing and/or canceling their Digital Certificates. January 18, 2017 RMS Update to COPS

Questions? January 18, 2017 RMS Update to COPS

Commercial Operations Subcommittee January 18, 2017 RMS Update to COPS