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ERCOT Technical Advisory Committee Meeting Notes - 9/26

Grid Monitor - staff writer
09/28/2023

<img src="/storage/docs/2023/09/tac full 0928.jpg" width="75%" /> Agenda                                    1.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Antitrust Admonition   2.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Approval of TAC Meeting Minutes (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     August 22, 2023   3.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Meeting Updates a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     August Board Meetings <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The Board approved all revision requests up for consideration except NPRR1186 which was referred back to TAC to address the deployment issue discussed in those meetings b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     September PUCT Meetings <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The PUC approved OBDRR047.   4.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Review of ERCOT Market Impact Statements/Opinions and IMM Opinions a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT doesn’t support PGRR105 or NOGRR245 as recommended by ROS. They do support NPRR1184 and SCR824. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The IMM is in support of NOGRR245 as recommended by ROS.   5.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Revision Requests Remanded to TAC (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     NPRR1186, Improvements Prior to the RTC+B Project for Better ESR State of Charge Awareness, Accounting, and Monitoring – URGENT <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Comments have been filed by Aspire, Joint Commenters, ERCOT, Octopus Energy, and Eolian. Leadership set the stage for discussion by limiting discussion to the specific issues discussed at the Board. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT spoke to their comments, which proposed to change the minimum SOC requirement from ECRS and non-spin so that they spool down from the full hourly amount of MW and allow it to drop to zero by the end of the hour. This resolves the “stranded” energy issue during scarcity conditions. It also resolves some of the other issues. However, ERCOT does have a concern that batteries may be totally depleted in future hours because they may not be able to charge as needed. This may lead to a future compliance-directed NPRR. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     A commenter asked whether this change was just during EEA, and ERCOT responded that it was applicable to more general times of scarcity. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iv.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT was asked about whether they’re making the proper process to be able to pull back AS payments that would’ve been made and addressing penalties if they have to replace AS with a SASM due to this change. This is correct, but this doesn’t change the “failure to provide” concept. A commissioner clarified whether the intent of the future NPRR’s would be to address issues where a participant that hasn’t met the AS obligation. Some stakeholders expressed concern over a potential new compliance regime. ERCOT clarified that the potential changes would be to automate the process; the protocols already allow ERCOT to address failure to provide AS. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                              v.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Commissioner Glotfelty asked about the difference between battery SOC and conventional generation, and ERCOT responded that they are trying to control SOC, but not over uncontrollable things like forced outages. He reiterated that ERCOT seeks to control batteries and encouraged folks to think differently about the issue. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            vi.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT was asked why they are maintaining the duration limit in the qualification requirements. They replied that it is to maintain diversity in the AS portfolio. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                           vii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Eolian spoke to express support for ERCOT’s latest comments addressing the stranded capacity issues, but expressed concerns about additional measure to address compliance around failure to manage SOC. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                         viii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Recommended for approval as previously recommended by TAC, as modified by ERCOT 9/19/23 comments.   6.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     PRS Report (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/19/6-prs-report.zip">Presentation</a> posted and given by PRS leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     NPRR1184, Update to Procedures for Managing Interest on Cash Collateral c.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     SCR824, Increase File Size and Quantity Limits for RIOO Attachments d.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     NPRR1156, Priority Revision Request Process - Notice of Rejection <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     This is moot due to the PUC rulemaking 52301 to implement ERCOT direction from HB1500.   7.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Revision Requests Tabled at TAC (Possible Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     OBDRR046, Related to NPRR1188, Implement Nodal Dispatch and Energy Settlement for Controllable Load Resources <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Remains tabled waiting form NPRR1188   8.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     RMS Report a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/21/8-rms-report.zip">Presentation</a> posted and given by RMS leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     A stakeholder asked whether there would be a specific notification to the market when Lubbock completes its transition. ERCOT looked at the communications from the last Lubbock integration. They will follow the same process, which included notification to the PUC and a series of market notices.   9.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ROS Report (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/25/9.%20%20ROS%20Report.zip">Presentation</a> posted and given by ROS leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     NOGRR245, Inverter-Based Resource (IBR) Ride-Through Requirements – URGENT <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ROS held a special meeting to discuss this revision and comments have been filed by Siemens Gamesa, ERCOT, and Avangrid since the that meeting for TAC’s consideration. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT stated that they don’t support the revision as it was recommended by ROS because it does not resolve the reliability risk it is intended to resolve. They have requested it be tabled to allow them to issue RFI’s to IBR’s and OEM’s to ask more questions about the relevant capabilities. Their goal is to support and maintain the reliability of the system, but not to require things that units physically cannot do. Potential respondents are reminded that ride-through is required at the generation unit level as well as at the plant level. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     NextEra spoke to their comments. They don’t oppose tabling, and they are continuing to work with other to consider changes to the filing date in 2024. They also want to tighten up the “commercial/technical feasibility” review language. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iv.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT stated that they intend to file additional comments next week, after the RFI’s are sent. Stakeholders asked about the timeline for responses to the RFI and were told that the RFI responses would be due the first part of November. Some questioned why ERCOT was making comments next week if the responses weren’t expected yet. ERCOT intends to go ahead and propose changes to the deadlines in the revision while awaiting responses. They also clarified that they want OEM’s to provide public RFI responses so that everyone is able to see the same information since there have been statements over the last few months that say ERCOT appears to be hearing one thing and generators another. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                              v.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Stakeholders suggested that ERCOT could bifurcate this revision and go ahead and move forward with only the portion pertaining to new IBR’s, while allowing the in-depth discussion regarding existing units. ERCOT responded that doing so would not address their major concern, which is ride-through associated with existing resources. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            vi.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Tabled at TAC via separate ballot c.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     PGRR105, Deliverability Criteria for DC Tie Imports <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     PUC Staff and ERCOT have filed comments, requesting that this be tabled. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT doesn’t support this revision because they don’t believe it is necessary to addresses the allocation of transmission costs due to PGRR077, which addressed transmission to accommodate DC Tie flows. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Tabled on the combo ballot d.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Major Transmission Elements (MTE) List <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Approved on the combo ballot   10.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  WMS Report a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/19/10-wms-report.zip">Presentation</a> posted and given by WMS leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     A question was asked about the ESR mitigation plans. There was a discussion at CMWG that explored issues around ESR mitigation, including exploring the CIASO design. ERCOT will come back to CMWG with additional information.   11.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  Credit Finance Sub Group (CFSG) Report a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/21/11-cfsg-report.zip">Presentation</a> posted and given by CFSG leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The development of the new invoice report is underway, including a draft NPRR that ERCOT is reviewing to determine whether it would sponsor the revision. c.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The invoice report would capture invoices pending to make sure they don’t get overlooked. A commenter questioned the need for this report.   12.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  Large Flexible Load Task Force (LFLTF) Report a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/26/12-public_9_26_lfltf_tac_update.pptx">Presentation</a> posted and given by LFLTF leadership. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The presentation covered the series of revision requests for large loads that have been proposed. A stakeholder commented that questions have been raised about whether ERCOT has the jurisdiction to make the proposed changes, and that these questions should be answered before moving these revisions forward. It was suggested that there may need to be a rulemaking at the commission. ERCOT Legal responded that they believe they do have the authority to enact the proposed revisions because their reliability authority in PURA is broad.   13.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  RTC+B Task Force Report (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Task Force Leadership <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Chair:  Matt Mereness - ERCOT <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Vice-Chair: David Key – CPS <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Approved on the combo ballot b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/19/13-rtcbtf-report.zip">Presentation</a> posted and given by RTC+B leadership. c.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT was asked about the timing and critical path for this development process. They are in the process of setting the requirements. To meet this, they need to finish the RTC SOC. This revision will need to go to the Board in December to keep RTC+B on track.   14.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  ERCOT Reports a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     2023 UFLS Survey Results <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/26/14-2023-ercot-ufls-survey-results.pptx">presentation</a> posted and given. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     If you have comments, send an email to compliance@ercot.com b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     September 6, 2023 EEA2 Event Overview <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT provided a verbal overview. They were cautious about speaking too directly about the transmission constraint in this public venue. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     The event occurred on the day of the new all-time September peak. As the sun set, less generation was available in west Texas. There were insufficient resources in the west, north, and central Texas. There were additional resources south of San Antonio, however, using that generation would have resulted in an overload of a transmission element. Therefore, ERCOT had to manually restrict the power flow to preserve reliability. They issued EEA to allow them access to additional resources.  The minimum PRC was 2,104 MW and frequency dropped to 59.77Hz. The frequency should not have dropped to this level with this much PRC on the system, therefore, ERCOT suspected the PRC number could be incorrect and took action to stabilize the frequency. They are sending out RFI’s regarding PRC values. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT was asked whether the associated lines were dynamically-rated. They are, but ERCOT reminded folks that while dynamic ratings can help in cool weather, their affect may go the wrong direction during hot weather. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                            iv.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     This will be referred to ROS to look into associated issues.   15.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  TAC Structural and Procedural Review Discussion a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     This annual review is beginning. Subcommittees are asked to review their scope, procedures, open action items, and working groups. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     TAC will hold a meeting for feedback on October 13th.   16.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  <a style="color: #0563c1;" href="https://www.ercot.com/files/docs/2023/09/25/16-other-business.zip">Other Business</a> a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     LCRA Load Zone Change Request <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT presentation posted and given to summarize LCRA’s request to move former Brazos load into the LCRA zone. LCRA pointed out that most of the associated cooperative load is already in the LCRA load zone. <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                             ii.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     A commenter asked whether LCRA’s PCRR’s would change, and they would not. b.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Firm Fuel Supply Service (FFSS) Report <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     ERCOT presentation posted and given. c.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Revision Request Timeline/PUCT Approval <span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">                                               i.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     In August, the commission will review revision not less than 30 days after the revisions have been filed at the PUC.   17.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  Combo Ballot (Vote) a.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">     Ballot passed   18.<span style="font-variant-numeric: normal; font-variant-east-asian: normal; font-variant-alternates: normal; font-kerning: auto; font-optical-sizing: auto; font-feature-settings: normal; font-variation-settings: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: 'Times New Roman';">  Adjourn