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Meeting Summary - 04/22/2025 RTCBTF Meeting

Grid Monitor AI
04/23/2025

<div class="news-image-container"><img src="/storage/docs/2025/04/20250422RTCBTFHero.png" width="800" height="594" /></div> <h3> </h3> <h3><a href="/sharing/?token=6015717b-e281-4139-9705-48f97313b85a">▶️</a>1 - Anti-trust Admonition</h3> <h3><a href="/sharing/?token=e7bb9400-eba7-47e8-9012-4dfde088e76e">▶️</a>2 - RTCBTF Update</h3> <a href="/storage/docs/2025/04/2_RTCBTF_Update_04222025.pdf">2_RTCBTF_Update_04222025.pdf</a> <h4><a href="/sharing/?token=3edcfe7c-2b41-4800-9327-7cb1b9c4b86f">▶️</a>2.1 - Update on NPRRs at Board</h4> <ul> <li style="font-weight: 400;" aria-level="1">Reviewed the old issues list with positive progress shown; more items marked as completed.</li> <li style="font-weight: 400;" aria-level="1">Acknowledgment of TAC and board approval for NPRR1268, NPRR1269, and NPRR1270, scheduled for commission consideration on May 15.</li> <li style="font-weight: 400;" aria-level="1">Development of new aggregated ORDC curve, AS demand curves, and proxy offer logic is underway.</li> <li style="font-weight: 400;" aria-level="1">Discussion on the state of charge duration parameter is planned; another revision anticipated for the June Board meeting.</li> <li style="font-weight: 400;" aria-level="1">Emphasis on ongoing market trials and planning for load frequency control (LFC) tests through April, May, and June.</li> <li style="font-weight: 400;" aria-level="1">Preparations for the go-live transition plan expected, including potential parallel data submissions and dual model day-ahead runs.</li> <li style="font-weight: 400;" aria-level="1">Consideration of protocol exemptions for LFC testing and go-live transition.</li> <li style="font-weight: 400;" aria-level="1">Acknowledgment of approved NPRRs and upcoming focus on state of charge discussions.</li> <li style="font-weight: 400;" aria-level="1">Clarification NPRR for June 18 regarding settlement corrections to align with protocols.</li> <li style="font-weight: 400;" aria-level="1">Highlighting NFRC telemetry updates requiring maintenance of specific data attributes for NERC evaluations.</li> <li style="font-weight: 400;" aria-level="1">Offer bid structure cleanup in progress, addressing monotonically non-increasing language on bids.</li> </ul> <h4><a href="/sharing/?token=bb873657-adad-4cfa-a521-69a3cf22bbc1">▶️</a>2.2 - Update on Scorecard</h4> <ul> <li style="font-weight: 400;" aria-level="1">TAC meetings scheduled for May leading to a June board meeting, and for August leading to a September board meeting.</li> <li style="font-weight: 400;" aria-level="1">No other board meetings until the meeting in December, after going live.</li> <li style="font-weight: 400;" aria-level="1">No changes in the market trial sequence; handbooks provide guidance on market submissions, telemetry startup, and open loop scheduling.</li> <li style="font-weight: 400;" aria-level="1">Final reviews for open loop scheduling and QSE telemetry test, initial reviews for closed loop LFC test and day ahead.</li> <li style="font-weight: 400;" aria-level="1">New market trials and tech support folders available on the RTCBTF homepage.</li> <li style="font-weight: 400;" aria-level="1">Plan to add four more training videos before the next meeting.</li> </ul> <h4><a href="/sharing/?token=42d44f32-a730-4f3b-b804-753e72ddc6f1">▶️</a>2.3 - Update on Weekly WebEx Market Trials (Market Notice sent 4/16)</h4> <ul> <li style="font-weight: 400;" aria-level="1">Market trials will use a central location for key documents like handbooks and technical details, located on the RTCBTF homepage.</li> <li style="font-weight: 400;" aria-level="1">The RTCB@ercot.com mailbox is operational and is managed to ensure quick responses.</li> <li style="font-weight: 400;" aria-level="1">Training videos are planned to aid in the market trials process.</li> <li style="font-weight: 400;" aria-level="1">ERCOT engaged with the demand side working group for load resource participation training.</li> <li style="font-weight: 400;" aria-level="1">A special session with the demand side working group was conducted with a focus on their participation in market trials.</li> </ul> <h4><a href="/sharing/?token=6cc97b54-0b67-4e18-935f-affc785628b2">▶️</a>2.4 - Operator Training Seminar Update</h4> <ul> <li style="font-weight: 400;" aria-level="1">Operator training seminars have been conducted every Wednesday for the past month.</li> <li style="font-weight: 400;" aria-level="1">The seminars cover RTC basics and operations, with a focus on telemetry changes.</li> <li style="font-weight: 400;" aria-level="1">600-800 operators have participated in the training at the T4 control center in Taylor.</li> <li style="font-weight: 400;" aria-level="1">Training sessions will conclude next Wednesday, with a focus on technical details related to RTC.</li> <li style="font-weight: 400;" aria-level="1">Preparation for formal market trials starting May 5th was discussed.</li> <li style="font-weight: 400;" aria-level="1">A market notice was sent on March 13 to ensure market participants were aware of upcoming market trial activities.</li> <li style="font-weight: 400;" aria-level="1">A 100% response rate was achieved for confirming readiness for the trials.</li> <li style="font-weight: 400;" aria-level="1">A second notice was sent regarding mandatory real-time co-optimization and battery market trials for all QSEs with resources starting May 5.</li> <li style="font-weight: 400;" aria-level="1">Market trial schedules and expectations from May through October were outlined for participants.</li> </ul> <h4><a href="/sharing/?token=97aac420-2c30-4af3-b558-7b8c9f65722c">▶️</a>2.5 - Model Schedule Posted</h4> <ul> <li style="font-weight: 400;" aria-level="1">Model load information is being posted to the RTCBTF homepage.</li> <li style="font-weight: 400;" aria-level="1">Network model, EMS system, and market management system topology were discussed.</li> <li style="font-weight: 400;" aria-level="1">New resources and their display on the model load schedule were mentioned.</li> <li style="font-weight: 400;" aria-level="1">Highlighted the posting of the model schedule as a housekeeping item.</li> </ul> <h3><a href="/sharing/?token=5fde5e56-7e8a-4593-b567-026a04f96646">▶️</a>3 - State of Charge / AS Duration Discussion</h3> <a href="/storage/docs/2025/04/3_RTCTF_Duration_Requirements_Topic_Update_v6.pdf">3_RTCTF_Duration_Requirements_Topic_Update_v6.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">A presentation was given on the analysis updates regarding Non-Spin resources, specifically online Non-Spin resources, and how they were being deployed.</li> <li style="font-weight: 400;" aria-level="1">It was noted that the analysis did not change the initial recommendation to recommend that Non-Spin duration lasts at least 4 hours.</li> <li style="font-weight: 400;" aria-level="1">Online Non-Spin capacity must be offered at a minimum of $75 per megawatt hour as per the protocols, with this capacity being available to SCED for deployment as needed.</li> <li style="font-weight: 400;" aria-level="1">An estimation was conducted to evaluate the deployment of online Non-Spin resources by SCED.</li> <li style="font-weight: 400;" aria-level="1">Historical data from 06/01/2018 to 03/27/2025 was analyzed, showing that 81% of events had a duration of four hours or more.</li> <li style="font-weight: 400;" aria-level="1">Questions were raised regarding the impact of different price floors on the event patterns and on the reliability determination.</li> <li style="font-weight: 400;" aria-level="1">A discussion was held on a specific date's analysis where forecast errors led to extended deployment of Non-Spin capacity.</li> <li style="font-weight: 400;" aria-level="1">Nitika Mago presented that the deployment patterns are driven by weather events and forced outages, which are difficult to forecast accurately.</li> <li style="font-weight: 400;" aria-level="1">Clarifications were made regarding the adjustments to battery state of charge calculations and their implications for the reliability need analyses.</li> <li style="font-weight: 400;" aria-level="1">It was concluded that the information shared did not change the existing recommendation but highlighted the usage of Non-Spin capacity during system demands.</li> </ul> <h4><a href="/sharing/?token=d1e15aff-5612-4a37-9f5a-f4c7d03ad9bd">▶️</a>3.1 - Draft NPRR</h4> <a href="/storage/docs/2025/04/3_XXXNOGRR-01-Related-to-NPRRXXX-Ancillary-Service-Duration-during-Real-Time-Co-Optimization-04XX25.pdf">3_XXXNOGRR-01-Related-to-NPRRXXX-Ancillary-Service-Duration-during-Real-Time-Co-Optimization-04XX25.pdf</a> <a href="/storage/docs/2025/04/3_XXXNPRR-01-Ancillary-Service-Duration-Under-Real-Time-Co-optimization-04DD25.pdf">3_XXXNPRR-01-Ancillary-Service-Duration-Under-Real-Time-Co-optimization-04DD25.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">The draft NPRR includes additional sections for clarity on qualification and monitoring criteria.</li> <li style="font-weight: 400;" aria-level="1">Key changes introduced include adjusting durations in various sections with acronyms established for consistency.</li> <li style="font-weight: 400;" aria-level="1">In reliability unit commitment, a new paragraph includes a 60-minute duration for energy and ancillary services, excluding RRS provided using fast frequency response with a 15-minute duration.</li> <li style="font-weight: 400;" aria-level="1">Changes include replacing a 15-minute duration with 30 minutes in regulation and responsive reserve.</li> <li style="font-weight: 400;" aria-level="1">Adjustments also seen in monitoring criteria, replacing 15 minutes with 30, and ECRS criteria changed from two hours to one hour.</li> <li style="font-weight: 400;" aria-level="1">Discussion on the impact of Non-Spin resource qualification and ECRS.</li> <li style="font-weight: 400;" aria-level="1">Nitika Mago addressed the revisions focusing on regulation updates and ERCOT’s intention to file the NPRR.</li> <li style="font-weight: 400;" aria-level="1">Stakeholder comments emphasized the importance of ensuring market stability and considerations for evolving reserve durability.</li> <li style="font-weight: 400;" aria-level="1">Concerns raised regarding state of charge (SOC) limits and how language applies to breakdown scenarios.</li> <li style="font-weight: 400;" aria-level="1">Further inquiries included how the NPRR aligns with security constraints and socioeconomic dispatch parameters, ensuring it doesn’t violate max/min SOC limits.</li> <li style="font-weight: 400;" aria-level="1">Clarification provided that adjustments are needed when transitioning from a combo model to a single model concerning ESR registration.</li> <li style="font-weight: 400;" aria-level="1">Queries about the impact of the NPRR changes on day-ahead market ancillary services.</li> <li style="font-weight: 400;" aria-level="1">Stakeholders invited to provide further comments or proposals before the next session, with potential for additional sessions based on feedback.</li> </ul> <h3><a href="/sharing/?token=f84e2b87-622e-4743-a281-d41778fd8314">▶️</a>4 - Market Readiness</h3> <ul> <li style="font-weight: 400;" aria-level="1">Discussion focused on the handbooks, with emphasis on transparency regarding recent modifications.</li> <li style="font-weight: 400;" aria-level="1">Acknowledgment of feedback loop necessity in case of issues with handbook updates.</li> <li style="font-weight: 400;" aria-level="1">Nathan Smith assisted in correcting handbook information regarding AS capability fields.</li> <li style="font-weight: 400;" aria-level="1">The field is not new but rather an adjustment from a single value to a megawatt value.</li> <li style="font-weight: 400;" aria-level="1">Clarification on telemetry checkout language to reflect that not all checkouts are complete but telemetry verification is recognized as success.</li> <li style="font-weight: 400;" aria-level="1">The language around telemetry verification has been softened to align with current progress and understanding.</li> </ul> <h4><a href="/sharing/?token=f8cbaed3-c5bf-43e1-9411-c7b6096a8548">▶️</a>4.1 - Review Handbook #3- Open Loop SCED (Round 3-Final)</h4> <a href="/storage/docs/2025/04/4_RTCB_Market_Trials_Handbook_3_OpenLoop_RTC_SCED_04182025_FINAL.pdf">4_RTCB_Market_Trials_Handbook_3_OpenLoop_RTC_SCED_04182025_FINAL.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Specific sections of the handbook are marked in green to indicate completion by ERCOT; this helps to show what the QSE needs to accomplish.</li> <li style="font-weight: 400;" aria-level="1">Section three of the handbook is crucial and has been discussed in past meetings.</li> <li style="font-weight: 400;" aria-level="1">ERCOT will run RTC SCED in the market trials environment using market submissions and telemetry, with published prices and dispatch information.</li> <li style="font-weight: 400;" aria-level="1">Introduction of 'non-monitored operating days' where QSEs submit real-time offers with 80%-120% cost representation. Participation is not enforced but expected to improve market results.</li> <li style="font-weight: 400;" aria-level="1">NPRR1058 allows all resources to update offers during the operating hour, with a mandatory reason in the text field for changes.</li> <li style="font-weight: 400;" aria-level="1">SCED-generated capacity prices will be published by interval on ERCOT.com; reports must be downloaded as no dashboards or specific displays will be provided.</li> <li style="font-weight: 400;" aria-level="1">SCED operations will occur on business days, specifically Tuesdays and Thursdays from 9 to 5, which provides a regular schedule for participants.</li> <li style="font-weight: 400;" aria-level="1">The handbook is being finalized and flagged as complete, but changes can be made if necessary.</li> <li style="font-weight: 400;" aria-level="1">There was a question about schema changes for recent code requirements; it was clarified that the reason field is already part of submissions and will be validated during the operating period.</li> <li style="font-weight: 400;" aria-level="1">The same update logic for energy offer changes will apply to AS offer submissions, pending confirmation.</li> </ul> <h4><a href="/sharing/?token=fe9e579f-24aa-4e7b-9ae2-9a7a93d4d216">▶️</a>4.2 - Review Handbook #4- QSE Telemetry Tests (Round 3-Final) Abhi Masanna Gari</h4> <a href="/storage/docs/2025/04/4_RTCB_Market_Trials_Handbook_4_QSE-Telemetry-Tests_04182025_FINAL.pdf">4_RTCB_Market_Trials_Handbook_4_QSE-Telemetry-Tests_04182025_FINAL.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Presented the proposed final version of the QSE telemetry tests.</li> <li style="font-weight: 400;" aria-level="1">Tweaked the handbook for better clarity and specificity.</li> <li style="font-weight: 400;" aria-level="1">Discussed the parallel test window running alongside the open loop schedule.</li> <li style="font-weight: 400;" aria-level="1">Emphasized the need for accurate telemetry to support the market solution.</li> <li style="font-weight: 400;" aria-level="1">Outlined the coordination of individual QSE tests on selected resources for point-to-point telemetry checkout.</li> <li style="font-weight: 400;" aria-level="1">Clarified that QSE tests don't involve the whole fleet, only selected resources.</li> <li style="font-weight: 400;" aria-level="1">Set test times to Tuesday and Thursday, nine to five.</li> <li style="font-weight: 400;" aria-level="1">Open to observed or self tests, with ERCOT in knowledge of the tests.</li> <li style="font-weight: 400;" aria-level="1">Clarified that CLRs will not require additional tests.</li> <li style="font-weight: 400;" aria-level="1">Mentioned forms, sheets, and expectations will be provided as the process progresses.</li> <li style="font-weight: 400;" aria-level="1">Plans to put the finalized document on the website.</li> <li style="font-weight: 400;" aria-level="1">Discussion involving Nathan Smith and Dave Maggio on energy offer curves and the ability to update ancillary service offers.</li> <li style="font-weight: 400;" aria-level="1">Clarified the distinction between energy offers under NPRR1058 and RTCTF discussions.</li> </ul> <h4><a href="/sharing/?token=cb2c7193-fde1-4b07-8c32-320788bc918a">▶️</a>4.3 - Review Handbook #5- Close-Loop LFC Tests (Round 1-Initial)</h4> <a href="/storage/docs/2025/04/4_RTCB_Market_Trials_Handbook_5_ClosedLoop_LFC_DRAFT_04182025.pdf">4_RTCB_Market_Trials_Handbook_5_ClosedLoop_LFC_DRAFT_04182025.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Introduction of a new frequency control test from September to October, described as challenging.</li> <li style="font-weight: 400;" aria-level="1">Proposal of a two-hour test with QSE participation, ensuring reliable RTC SCED dispatch and frequency control without significant operational disruption.</li> <li style="font-weight: 400;" aria-level="1">ERCOT to provide a minimum of ten business days advanced notice before test dates, with tests conducted to prevent frequency issues.</li> <li style="font-weight: 400;" aria-level="1">Details on managing transition risk through parallel production systems and binding RTC SCED during tests.</li> <li style="font-weight: 400;" aria-level="1">Minimizing the risk of significant redispatch through guardrails requiring QSEs to enter identical energy offer curves for both current and RTC systems.</li> <li style="font-weight: 400;" aria-level="1">Specific instructions for AS responsibilities: $0 offers for resources carrying responsibilities and $2,000/megawatt for others.</li> <li style="font-weight: 400;" aria-level="1">Consideration of current duration requirements over RTC during LFC tests for ESRs with response AS responsibility.</li> <li style="font-weight: 400;" aria-level="1">Telecom assumptions for QSEs and possible test run LFC to ensure QSE offers and telemetry are functioning prior to main tests.</li> <li style="font-weight: 400;" aria-level="1">Detailed test execution phases involving gradual QSE transition to RTC control, minimizing frequency swings during the test’s two-hour window.</li> <li style="font-weight: 400;" aria-level="1">Clarification on AS trades or changes within the test window, ensuring QSE can update offers as needed.</li> <li style="font-weight: 400;" aria-level="1">Financial settlements during tests based on current system prices, exempting base point deviation charges to prevent penalties.</li> <li style="font-weight: 400;" aria-level="1">Dispute conditions limited to financial harm instances, with criteria based on protocol 6.6.9(4)</li> <li style="font-weight: 400;" aria-level="1">Discussion on potential repeat of the test twice if needed, with adjustments based on findings.</li> </ul> <h4>Key Participants</h4> <ul> <li style="font-weight: 400;" aria-level="1">ERCOT representatives introducing and explaining the test process.</li> <li style="font-weight: 400;" aria-level="1">Q&A from attendees like Ned Bonskowski, Dave Maggio, and Chris Espinosa providing additional inquiries on operational details.</li> <li style="font-weight: 400;" aria-level="1">Questions addressing specific scenarios like AS responsibility shifts and telemetry requirements.</li> </ul> <h4>Next Steps</h4> <ul> <li style="font-weight: 400;" aria-level="1">Take feedback back to respective teams and provide additional questions or concerns in the next round of discussions.</li> <li style="font-weight: 400;" aria-level="1">Refine clarifications on AS offer protocols and test logistics prior to next meeting.</li> </ul> <h4><a href="/sharing/?token=4138c792-4d42-4ad9-8d03-cf2d6ce000df">▶️</a>4.4 - Review Handbook #6- Day-Ahead Market Tests (Round 1-Initial)</h4> <a href="/storage/docs/2025/04/4_RTCB_Market_Trials_Handbook_6_DayAheadMarket_DRAFT_04182025.pdf">4_RTCB_Market_Trials_Handbook_6_DayAheadMarket_DRAFT_04182025.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Voluntary Day-Ahead Market</li> <ul> <li style="font-weight: 400;" aria-level="2">The day-ahead market is voluntary post-RTC go live.</li> <li style="font-weight: 400;" aria-level="2">Day-ahead market participation is encouraged but not mandatory in readiness metrics.</li> <li style="font-weight: 400;" aria-level="2">Ancillary services (AS) are expected to have a liquid market.</li> <li style="font-weight: 400;" aria-level="2">The market will open to all QSEs, not just the existing participants.</li> </ul> <li style="font-weight: 400;" aria-level="1">Market Participation</li> <ul> <li style="font-weight: 400;" aria-level="2">QSEs can test market submissions like energy bids and AS offers.</li> <li style="font-weight: 400;" aria-level="2">Specific transactions for energy storage can be submitted.</li> <li style="font-weight: 400;" aria-level="2">Resource-specific AS offers can be submitted.</li> </ul> <li style="font-weight: 400;" aria-level="1">ESRs and Market Testing</li> <ul> <li style="font-weight: 400;" aria-level="2">ESR (energy storage resources) names updated in the system.</li> <li style="font-weight: 400;" aria-level="2">ESRs are available in RTCB environment for testing.</li> <li style="font-weight: 400;" aria-level="2">Questions about inclusion and updating of ESR lists were discussed.</li> </ul> <li style="font-weight: 400;" aria-level="1">Market Trials and Advisory Obligations</li> <ul> <li style="font-weight: 400;" aria-level="2">Day-ahead market tests are advisory with no binding commitments.</li> <li style="font-weight: 400;" aria-level="2">Details about AS scheduling limits were clarified.</li> <li style="font-weight: 400;" aria-level="2">Adjustment period is separate and not linked to closed loop tests.</li> </ul> <li style="font-weight: 400;" aria-level="1">Upcoming Sandbox and Reports</li> <ul> <li style="font-weight: 400;" aria-level="2">Publicly available sandbox data to be discussed at a later point.</li> <li style="font-weight: 400;" aria-level="2">Reports update planned for upcoming meetings.</li> </ul> <li style="font-weight: 400;" aria-level="1">Closing Remarks and Follow-ups</li> <ul> <li style="font-weight: 400;" aria-level="2">Finalization of handbook items discussed.</li> <li style="font-weight: 400;" aria-level="2">Feedback on day-ahead market and closed loop testing to be sought in next meeting.</li> </ul> </ul> <h3><a href="/sharing/?token=0df452fc-98be-40c4-9b4a-acaf84ad057f">▶️</a>5 - Review 3 New Training Modules</h3> <h4><a href="/sharing/?token=e8e52f90-f1de-4ae8-aec7-da133b8cd40b">▶️</a>5.1 - Day-Ahead Market Training</h4> <a href="/storage/docs/2025/04/5_RTCB_DAM_Training_v04182025.pdf">5_RTCB_DAM_Training_v04182025.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Overview of day-ahead market changes in the RTC+B era compared to current operations.</li> <li style="font-weight: 400;" aria-level="1">Reminder of the day-ahead market timeline which remains unchanged, including AS obligations and incentive service demand curves.</li> <li style="font-weight: 400;" aria-level="1">Introduction of three different AS submissions: AS only (new), resource specific, and self-arrangement.</li> <li style="font-weight: 400;" aria-level="1">No minimum obligation for AS submissions; advisory and final AS obligations calculated using LSE's load ratio share.</li> <li style="font-weight: 400;" aria-level="1">Shift in AS demand curve structure, moving away from an AS penalty cost structure to using AS demand curves in RTC.</li> <li style="font-weight: 400;" aria-level="1">AS insufficiency process modifications where insufficiency may lead to market reopening for additional offers.</li> <li style="font-weight: 400;" aria-level="1">Introduction of AS only offers in RTC without resource ties, limited to specific AS types, and subject to a new credit exposure calculation.</li> <li style="font-weight: 400;" aria-level="1">Resource specific offers to continue with some modifications, and a new optimization focus on AS demand curves.</li> <li style="font-weight: 400;" aria-level="1">Self-arrangement can't exceed advisory obligation in RTC, and negative self-arrangements treated as price takers.</li> <li style="font-weight: 400;" aria-level="1">Energy Storage Resources (ESRs) to have a single model incorporating charging/discharging, and no ESR offline reserves allowed.</li> <li style="font-weight: 400;" aria-level="1">Training outcomes to be seen in September/October with ERCOT publishing AS obligation reports.</li> </ul> <h4>Questions</h4> <ul> <li style="font-weight: 400;" aria-level="1">Clarification on AS insufficiency process in RTC and its interaction with pricing.</li> <li style="font-weight: 400;" aria-level="1">Clarification on the role of SASM in relation to real-time co-optimization.</li> <li style="font-weight: 400;" aria-level="1">Potential for earlier testing of AS obligation reports for integration purposes.</li> <li style="font-weight: 400;" aria-level="1">Further illustration on the co-optimization of resource specific and AS only offers.</li> </ul> <h4>Next Steps</h4> <ul> <li style="font-weight: 400;" aria-level="1">Address the implementation details of new AS only offers and their market impacts.</li> <li style="font-weight: 400;" aria-level="1">Further clarification on the functional differences between day-ahead and real-time operations for battery resources.</li> <li style="font-weight: 400;" aria-level="1">ERCOT to consider publishing AS obligation reports sooner for testing integration.</li> <li style="font-weight: 400;" aria-level="1">Continuing market training focusing on other key topics like battery operations in the day-ahead market.</li> </ul> <h4><a href="/sharing/?token=8546ed83-7f73-4e1c-b634-d67f5d68bc91">▶️</a>5.2 - Battery Training</h4> <a href="/storage/docs/2025/04/5_RTCBTF_Battery-Overview-Training-4-22-25-as-of-4-17-25-1830.pdf">5_RTCBTF_Battery-Overview-Training-4-22-25-as-of-4-17-25-1830.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Overview of the progress and future integration of battery energy storage systems into the ERCOT system.</li> <li style="font-weight: 400;" aria-level="1">Increase in battery energy storage capacity from less than 200 megawatts in 2019 to over 11,000 megawatts today, with expectations of reaching 18,000 by the end of the year.</li> <li style="font-weight: 400;" aria-level="1">Duration of batteries in the system mainly consists of one-hour duration batteries, with a future trend towards longer duration batteries.</li> <li style="font-weight: 400;" aria-level="1">Implementation of real-time co-optimization where more ancillary services are expected to be provided by batteries.</li> <li style="font-weight: 400;" aria-level="1">Introduction to new NPRRs that support the transition such as NPRR1014, NPRR1204, NPRR1236 and the cleanup NPRR1246.</li> <li style="font-weight: 400;" aria-level="1">Details about the single model approach which includes registration, qualification, modeling, and telemetry as a single resource.</li> <li style="font-weight: 400;" aria-level="1">Modification of setpoint deviation calculation with tighter tolerance requirements being implemented.</li> <li style="font-weight: 400;" aria-level="1">Procedures for submission of energy bid offer curves and real-time management in the day-ahead and real-time markets.</li> <li style="font-weight: 400;" aria-level="1">RUC processes including DRUC and HRUC will be used to ensure enough capacity in future hours and how state of charge information will be utilized.</li> <li style="font-weight: 400;" aria-level="1">Deployment factors will simulate potential AS deployment used for future RUC calculations.</li> <li style="font-weight: 400;" aria-level="1">Discussion on how deployment factors are determined and how they can impact the market participants' operations.</li> <li style="font-weight: 400;" aria-level="1">Multiple questions were raised and answered about deployment factors, tolerances, and operating procedures.</li> </ul> <h4><a href="/sharing/?token=34a2181e-7f9d-4b42-8057-13c884f25b39">▶️</a>5.3 - RTC Spreadsheet Tool and Examples</h4> <a href="/storage/docs/2025/04/RTC_RealTime_Market_Simulator_April-RTCBTF.pdf">RTC_RealTime_Market_Simulator_April-RTCBTF.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Presentation used a simple model to illustrate price formation under RTC using different scenarios.</li> <li style="font-weight: 400;" aria-level="1">Ray Lee and the market analysis team were acknowledged for their contribution.</li> <li style="font-weight: 400;" aria-level="1">The presentation focuses on illustrating changes in outputs with RTC such as clearing prices, base points, and awards.</li> <li style="font-weight: 400;" aria-level="1">Simulation tool for scenarios is available on the RTC+B web page for download.</li> <li style="font-weight: 400;" aria-level="1">SCED system overview: designed to provide the lowest cost set of resources to meet energy needs, with reserve pricing added outside optimization.</li> <li style="font-weight: 400;" aria-level="1">RTC reflects scarcity of energy and ancillary services and factors ancillary service costs directly into LMPs.</li> <li style="font-weight: 400;" aria-level="1">Three scenarios presented: optimal allocation of ancillary services, transmission congestion management, and system scarcity impact.</li> <li style="font-weight: 400;" aria-level="1">Importance of making resources indifferent regarding capacity use for energy vs. ancillary services was emphasized.</li> <li style="font-weight: 400;" aria-level="1">Example scenarios demonstrated how RTC prioritizes the need to serve load and ensures operating profit consistency for resources.</li> <li style="font-weight: 400;" aria-level="1">RTC can alleviate congestion by adjusting ancillary service awards and managing costs effectively.</li> <li style="font-weight: 400;" aria-level="1">During tight conditions, RTC prioritizes energy over ancillary services and factors penalty costs.</li> <li style="font-weight: 400;" aria-level="1">Indifference in operating profit maintained irrespective of capacity use is essential.</li> <li style="font-weight: 400;" aria-level="1">Confirmation that offer cap remains at $5k in day-ahead but reduces to $2k for energy and ancillaries in real-time.</li> </ul> <h3><a href="/sharing/?token=ac44709c-789f-4919-ade1-d33c25bf8ff0">▶️</a>6 - TWG Updates/Questions</h3> <a href="/storage/docs/2025/04/6_RTCBTF_Reports_CDR_PD_04182025.pdf">6_RTCBTF_Reports_CDR_PD_04182025.pdf</a> <h4><a href="/sharing/?token=b565dca5-f80e-4e7d-b150-751d78d2eac1">▶️</a>6.1 - Reports Update</h4> <ul> <li style="font-weight: 400;" aria-level="1">Discussion on the timing and phases of report deliveries.</li> <li style="font-weight: 400;" aria-level="1">Reports will be delivered in multiple phases: no new reports on May 5, but introduction of wave one and wave two groups.</li> <li style="font-weight: 400;" aria-level="1">Group One involves open loop testing reports including RTC energy prices, binding constraints, adders, and market clearing prices for ancillary services.</li> <li style="font-weight: 400;" aria-level="1">Group Two involves closed loop testing, with seven additional reports and 11 new CDR reports available in September.</li> <li style="font-weight: 400;" aria-level="1">Some reports could be moved up to July for integration testing.</li> <li style="font-weight: 400;" aria-level="1">Reports are categorized as existing, modified, or new, with some changes not affecting the data itself.</li> <li style="font-weight: 400;" aria-level="1">The complete inventory includes around 95 reports, detailing when each will be released and any associated changes.</li> <li style="font-weight: 400;" aria-level="1">Dashboards and XSD files also discussed; XSDs available by October 15 for integration building.</li> <li style="font-weight: 400;" aria-level="1">The ERCOT reporting inventory tool, EMIL, was mentioned as a resource for tracking reports.</li> <li style="font-weight: 400;" aria-level="1">No significant changes in graphic/dashboard elements except for a few modifications.</li> </ul> <h3><a href="/sharing/?token=2caac6f0-3464-46e0-ae2b-72fd1a3c3b2c">▶️</a>7 - Other Business</h3> <h4><a href="/sharing/?token=eb2887c0-0ec4-4ee7-92c7-5348e2cafb3c">▶️</a>7.1 - Next Steps on HEN Proposal related to underlying AORDC Calculations</h4> <a href="/storage/docs/2025/04/7_HEN_Appropriate-Parameters-for-the-AORDC.pdf">7_HEN_Appropriate-Parameters-for-the-AORDC.pdf</a> <ul> <li style="font-weight: 400;" aria-level="1">Shams Siddiqi clarified that the HEN proposal does not seek to change the AORDC curve shape.</li> <li style="font-weight: 400;" aria-level="1">The proposal suggests using unaltered ORDC μ and σ for AORDC calculations.</li> <li style="font-weight: 400;" aria-level="1">Critique of the current process as cumbersome and based on regression fit that undervalues MCPC.</li> <li style="font-weight: 400;" aria-level="1">Advocated for using current ORDC hourly statistics for μ and σ.</li> <li style="font-weight: 400;" aria-level="1">Current AORDC uses μ* and  σ*, which are seen as incorrect proxies.</li> <li style="font-weight: 400;" aria-level="1">Shortcomings of the option two ORDC adder formula lead to undervaluing of reserves.</li> <li style="font-weight: 400;" aria-level="1">Using unaltered ORDC statistics could correct inadvertent price suppression.</li> <li style="font-weight: 400;" aria-level="1">No system changes required, just a manual update of parameters.</li> <li style="font-weight: 400;" aria-level="1">Could potentially address the missing money problem in current market pricing.</li> <li style="font-weight: 400;" aria-level="1">Some members are cautious about implementing significant changes before RTC go live.</li> <li style="font-weight: 400;" aria-level="1">Concerns over how these changes interact with future market design and reliability standards.</li> <li style="font-weight: 400;" aria-level="1">Need for broad analysis and simulations to understand full market impact.</li> <li style="font-weight: 400;" aria-level="1">Potential for an NPRR submission to facilitate further study.</li> <li style="font-weight: 400;" aria-level="1">Possible escalation to TAC and other bodies for higher-level discussion.</li> <li style="font-weight: 400;" aria-level="1">Some participants suggested considering this alongside broader market design changes post-RTC implementation.</li> </ul> <h3><a href="/sharing/?token=e83e50cc-0798-4983-b502-1a6c52ee0625">▶️</a>8 - Adjourn</h3>