RTC+B Task Force Update & Program Review Summary

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The content provides updates on the RTC+B Task Force activities and program review, including a sequence of market trials, key principles, meeting plans, and current issues. It outlines the timeline for potential market trials from May to December 2025 and highlights the key objectives for program implementation. The document also includes details on lessons learned from previous meetings to avoid delays in decision-making processes.


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  1. RTC+B Task Force Update Matt Mereness TAC May 22, 2024

  2. Outline - - - - - Program update: RTC+B Program Update from April Board T&S Potential Market Trial Sequence Reminder of RTCBTF Review Cycle Current Issues for RTCBTF TAC Endorsement requested: Issue 4 Mitigated Offer Caps for Hydro for RTC 2 2 Public

  3. RTC+B Program Update (excerpt from April Board T&S RTC Update) 3 Public

  4. Sequence and Potential Dates for Market Trials (dates subject to change while in Planning phase) May 2025 June 2025 July 2025 Aug 2025 Sep 2025 Oct 2025 Nov 2025 Dec 2025 QSE Attestation 9 months before Trials. 2 months 1-2 months 2 months 1 month Open-loop RTC SCED (QSE offers, SCED non- binding award/dispatch) RTC QSE Submission Testing (Submit COP, RT AS Offers, DAM Virtual AS, Outages for ESRs) Closed-loop RTC SCED (QSE offers, SCED binding award and dispatch for 2-3 instances of 2- 4 hours) Transition to Go-Live Upon completion of testing, confirmation of ERCOT and market readiness for Go-Live. RTC QSE Telemetry Testing/Check-out (Individual QSE testing of UDSP, New ramp rates, ESR telemetry) 2-3 months Day-Ahead Market (Non-binding DAM using QSE offers at least 2 times) 1-2 months 4 Public

  5. Plans for Meetings and Review Cycles Reminder of RTC+B Program Scope RTC Key Principles were approved to lay foundation of NPRR1007-1013 Consolidated Key Principles: https://www.ercot.com/files/docs/2020/04/01/RTC_Key_Principle_Quick_Reference.docx Library of Key Principles: https://www.ercot.com/mktrules/puctDirectives/rtCoOptimization Battery Key Topic Concepts approved to lay foundation of NPRR1014 https://www.ercot.com/mktrules/keypriorities/bes RTC State-of-Charge accounting in NPRR1204 Objective is to present concepts or issues that need to be resolved for an effective implementation. Coordinating timelines for interface requirements and testing, Providing the forum for any analysis or policy decisions (such as parameter values) Coordinating market readiness and cutover activities, Review draft Revision Requests or other artifacts necessary to successfully implement the program within the identified timeframes, and discussing other details as needed. Lessons learned from RTCTF to avoid being delayed in decisions: Meeting #1: Initial concept presented by ERCOT staff Meeting #2: Comments and alternatives presented by MPs Meeting #3: RTCTF consensus achieved or escalated to TAC for a vote to decide the matter. 5 Public

  6. Current Issues List Link to current issues on today s meeting page Closed/green on RUC Capacity Short (added Resolved Worksheet) Protocol needed? No No No VCMRR NPRR Source Type Id Issue to resolve Approval Jan-24 Feb-24 Mar-24 Apr-24 May-24 Jun-24 Jul-24 Aug-24 Sep-24 Oct-24 Nov-24 Dec-24 Jan-25 1 2 3 Parameters for Ancillary Service proxy offers (values for the parameters) ASDCs for use in Reliability Unit Commitment (RUC) studies (values for parameters) Framework for periodic analysis comparing RTC and the current ORDC design KP 1.1(8) Policy Policy Analysis TAC TAC No RTCTF issue RTCTF issue RTCTF issue 4 Verifiable Cost Manual (Change for on-line hydro Resources per Key Principle 1.3(3)) Other TAC RTCTF issue Normal process Exisiting processes Exisiting processes No Existing processes TAC No TAC TAC TAC TAC TAC TAC 5 Additional review of transmission constraint max. shadow price values (Sec 22 protocols per NPRR1211) Policy Yes RTCTF issue Operation Procedures (e.g., removing SASM and HASL/LASL), note to include any needed discussion on triggers for initiating off-cycle SCED execution 6 Readiness No RTCTF issue 7 Business Practice Manuals (e.g., changes to COP and telemetry) Readiness No RTCTF issue 8 Mapping of bill determinants to extracts and reporting for developing shadow settlement Readiness No RTCTF issue 9 Changes to ICCP handbook, and documentation for non-ICCP market submissions Readiness No RTCTF issue 10 11 12 13 14 15 16 17 Market trials/training/annual seminar engagement (release plans/dates for market trials) Any details MPs need for designing their control systems Scaling Factor Values for RegU and RegD (ie, ramp sharing as values, dynamic or static?) How DRRS would work in an RTC paradigm Inclusion of firm load shed in the pricing run - (RTC changes to align with NPRR1081) Various protocol references need to be updated RTC SOC duration parameter discussion RUC Capacity Short Calculations with SOC Readiness Readiness Other Other Policy Other Policy Policy No No No Yes Yes Yes No NPRR RTCTF issue RTCTF issue ERCOT 2023 ERCOT 2023 ERCOT 2023 ERCOT 2023 ERCOT 2023 ERCOT 2023 18 RTCBTF 1/12/24 Review of the AS Demand Curves in the context of current policy. Other No No Normal process 19 RTCBTF 1/12/24 Emergency Price Program alignment to RTC (imbedded within NPRR1216, monitor only for RTCBTF) Policy Yes 20 RTCBTF 4/10/24 Review of the Energy and AS Offer Caps in the context of current policy. Other No No Blue is to reflect new or updated dates of review Gray is to reflect existing review schedule Green is to reflect completion - Moving up discussion of interface changes, market trials, details for designing control systems 6 Public

  7. Summary of Resolved Issues Resolved Tab of Issues Workbook: Resolved Issues Source Id 17 Issue to resolve RUC Capacity Short Calculations with SOC Resolution or next steps TAC approval of RUC Capacity Whitepaper at April 2024 TAC. ERCOT to submit NPRR in May to support whitepaper. RTCBTF endorsement of approach: Given that Hydro Resources operating in synchronous condenser mode are not dispatched by SCED, ERCOT proposes setting the Mitigated Offer Cap for all Hydro Resources to RTSWCAP. This will be done in protocol and verifiable cost manual by 1) setting the O&M value in the MOC to RTSWCAP and 2) Setting the heat rate to 0 MMBtu/MWh. ERCOT 2023 Verifiable Cost Manual (Change for on-line hydro Resources per Key Principle 1.3(3)) 4 RTCTF issue 7 Public

  8. Issues at May RTCBTF Meeting - Issue 4 - Verifiable Cost Manual- Change for on-line hydro Resources per KP 1.3(3) - Final review and includes draft language - No comments received from March RTCBTF presentation Confirmed concept in Resolved Tab of Issues Sheet Issue 3 - Framework for periodic analysis comparing RTC and the current ORDC design - - - Prior meeting had ERCOT approach to analysis (public Excel tool and internal Python Simulator) - Reviewed Luminant s feedback on Operating Days to be evaluated in RTC Simulator Tool Issue 20 - Review of the Energy and AS Offer Caps in the context of Current Policy - First time discussion and will include ESR examples Issue 9-10 - Market Readiness and Technical Workshops - Review of past 2 workshops - - RTC+B Technical Workshop - April 18, 2024: 1:00 PM 4:00 PM RTC+B Technical Workshop - May 6, 2024: Issue 18 - Review of the AS Demand Curves in the context of current policy - Time allocated for MPs to share thoughts and next steps 1:00 PM 4:00 PM - 8 Public

  9. TAC requested action - Issue 4 - Verifiable Cost Manual- Change for on-line hydro Resources per KP 1.3(3) - Seeking TAC endorsement of On-Line Hydro Mitigated Offer Cap Decision (details below) and as captured in Resolved Tab of RTCBTF Issues List - Given that Hydro Resources operating in synchronous condenser mode are not dispatched by SCED, ERCOT proposes setting the Mitigated Offer Cap for all Hydro Resources to RTSWCAP. This will be done in protocol and verifiable cost manual by 1) setting the O&M value in the MOC to RTSWCAP and 2) Setting the heat rate to 0 MMBtu/MWh. 9 Public

  10. RTCBTF Next steps - - June 12- Next RTCBTF Wrapping up limited series of RTC+B Technical Workshops (April-June 2024) - Target audience, vendors and IT development/implementation staff (sent to RTCBTF and TWG) RTC+B Technical Workshop - April 18, 2024: 1:00 PM 4:00 PM : Overview of ICCP Telemetry/EMS SCADA/AGC changes & ICCP Configurations for parallel testing. RTC+B Technical Workshop - May 6, 2024: 1:00 PM 4:00 PM : Finalize approach on ICCP configuration approaches for parallel testing and transition. RTC+B Technical Workshop - May 15, 2024: 1:00 PM 4:00 PM : Market Interfaces design specifications (submissions - External API/Market Manager, notifications, and reports) RTC+B Technical Workshop - June 6, 2024: 1:00 PM 4:00 PM : Reserved for further discussions if needed and Q&A session. - Based on the feedback from these workshops, ERCOT will finalize ICCP/Market Interface design specifications and publish draft versions to the ERCOT website. - This engagement will help QSEs and their vendors start planning their RTC+B systems design and implementation early to align with ERCOT s RTC+B project implementation timelines which is critical for ERCOT to deliver this project successfully and on time. - Discussions and artifacts will be highlighted and shared at regular RTCBTF meetings. - Questions? 10 Public

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