ERCOT TAC Updates: Subcommittee Leadership, Winter Weather Update, and More

TAC Update MARCH 1, 2022 MARCH 1, 2022 JOHN SCHATZ JOHN SCHATZ DEBBIE MCKEEVER DEBBIE MCKEEVER LUMINANT GENERATION LUMINANT GENERATION ONCOR ONCOR RMS CHAIR RMS CHAIR RMS VICE RMS VICE- -CHAIR CHAIR

TAC Highlights TAC Highlights January 31 Meeting January 31 Meeting 2022 Subcommittee Leadership presented to TAC for Approval All were approved! Protocol Revision Subcommittee (PRS) Chair: Martha Henson, Oncor Electric Delivery Vice Chair: Melissa Trevino, Occidental Chemical Retail Market Subcommittee (RMS) Chair: John Schatz, Luminant Generation Vice Chair: Debbie McKeever, Oncor Electric Delivery Reliability and Operations Subcommittee (ROS) Chair: Chase Smith, Southern Power Co. Vice Chair: Katie Rich, Golden Spread Electric Cooperative Wholesale Market Subcommittee (WMS) Chair: Resmi Surendran, Shell Energy Vice Chair: Ivan Velasquez, Oncor Electric Delivery 2

TAC Highlights TAC Highlights January 31 January 31 Cliff Lang Eric Blakey STEC Just Energy elected Vice Chair elected TAC Chair Emergency Conditions List Completion status TAC Chair stated all items are complete or have been transitioned to a Working Group or Task Force TAC Chair requested list to be considered complete unless there is opposition No opposition was stated Chair noted everyone should be proud of the job they have done Emergency Conditions List is considered complete and an update will be provided to the ERCOT Board 3

TAC Highlights TAC Highlights January 31 January 31 Winter Weather Update Dan Woodfin with ERCOT stated that ERCOT had sent an OCN on January 31 Based on recent data and current forecast, the OCN had been upgraded to an Advisory ERCOT provided an update of activities in preparation for a Weather event TAC Voting Items specific to RMS APPROVED! RMGRR166, Revising Timing for Switch Hold Extract Availability RMGRR169, Related to NPRR1095, Texas SET V5.0 Changes NPRR1095, Texas SET V5.0 Changes SCR817, Related to NPRR1095, MarkeTrak Validation Revisions Aligning with TX SET V5.0 All voting items on the Combo Ballot were approved NEXT TAC MEETING - DISCUSS IF THERE WILL BE HYBRID MEETINGS WITH COMBO BALLOT OR REVERT BACK TO VOTING FOR INDIVIDUAL AGENDA ITEMS? 4

TAC Highlights TAC Highlights January 31 January 31 Questions and Comments made during the RMS update: Can RMS please include the TNMP 3G Remediation progress in each of the RMS monthly updates? RMS response: Yes. RMS will provide updates of the TNMP Remediation project through the conclusion of TNMP s project. Will Profiling Working Group be developing a profile type for Crypto Load? RMS response: RMS will work with PWG, ERCOT and others to determine possibilities for a Crypto Load Profile type and provide monthly updates to TAC. Can RMS weigh in on the new Crypto Working Group and provide feedback? RMS response: RMS Leadership will attend the new Crypto Working Group meetings, determine interaction needed and provide monthly updates to TAC. 5

TAC Highlights TAC Highlights February 23 February 23 2022 TAC Strategic Initiatives and 2022 TAC Goals APPROVED! Primary changes: Removal of Passport Project Modifications to include Large Load such as Crypto Load Develop and implement market design changes and enhancements originating from the 87th session of the Texas Legislature. 6

TAC Highlights TAC Highlights February 23 February 23 PRS Update PRS requested TAC approve 3 NPRRs and 2022 PRS Goals NPRR1097, Create Resource Forced Outage Report URGENT! Approved by TAC NPRR1120, Create Firm Fuel Supply Service URGENT! Approved by TAC NPRR1092, Reduce RUC Offer Floor and Remove RUC Opt-Out Provision (IMM) TAC Leadership have been approached and requested NPRR1092 be tabled for one month PUCT Staff stated they are in favor of tabling for one month Update provided by Shell TAC Chair stated this NPRR could best be addressed in a workshop 7

TAC Highlights TAC Highlights February 23 February 23 PRS Goals Process NPRRs and SCRs in accordance with Protocol Section 21, Revision Request Process. Review the Business Case for each NPRR and SCR that requires an ERCOT project for implementation to ensure that it provides adequate justification for the project. Assign a recommended priority and rank for each NPRR, SCR, and guide revision that requires an ERCOT project for implementation. Consider requests and assignments from the ERCOT Board and TAC in a timely and diligent manner. Review Other Binding Documents (OBDs) annually for elimination or incorporation into Protocols/Market Guides. Review aging projects at least annually and make recommendations if additional actions are needed. 8

TAC Highlights TAC Highlights February 23 February 23 TNMP 3G Meter Remediation TAC Attendees or Members stated comments or questions related to the following items included in the update. TNMP still receiving 98% of reads successfully but TNMP is monitoring daily TNMP receiving meters on a consistent basis and expects meter inventory to be sufficient for all meters by July 2022, but possibly not all will be installed by that date. TNMP expects to have resources available such that there are not a lot of estimated reads. TAC Vice Chair requested status updates be provided throughout the project. 9

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