NOTICE DATE:  December 3, 2025

NOTICE TYPE:  M-E110525-03 Market Rules

SHORT DESCRIPTION:  RTC+B: Implementation Details of Revision Requests

INTENDED AUDIENCE:  All Market Participants

DAYS AFFECTED:  December 5, 2025

LONG DESCRIPTION:  On December 5, 2025, language associated with the following Revision Requests will be implemented for the Real-Time Co-optimization Plus Batteries (RTC+B) project. Unless otherwise noted, the Revision Request language will be fully implemented:

• NOGRR211, RTC - NOG 2 and 9: System Operations and Control Requirements and Monitoring Programs
• NOGRR221, Alignment Changes for January 1, 2021 Nodal Operating Guide - NPRRs 1010 and 1039
• NOGRR268, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era
• NOGRR276, Alignment Changes for June 1, 2025 Nodal Operating Guide - NPRR1246 and NPRR1270
• NOGRR277, Related to NPRR1282, Ancillary Service Duration under Real-Time Co-Optimization
• NOGRR278, Related to NPRR1290, Gap Resolutions and Clarifications for the Implementation of RTC+B
• NPRR963, Base Point Deviation Settlement and Deployment Performance Metrics for Energy Storage Resources (Combo Model)
• Sections 6.6.5.5, 6.6.5.5.1, and 6.6.5.6
• NPRR1000, Elimination of Dynamically Scheduled Resources
• NPRR1007, RTC - NP 3: Management Activities for the ERCOT System
• NPRR1008, RTC - NP 4: Day-Ahead Operations
• NPRR1009, RTC - NP 5: Transmission Security Analysis and Reliability Unit Commitment
• NPRR1010, RTC - NP 6: Adjustment Period and Real-Time Operations
• NPRR1011, RTC - NP 8: Performance Monitoring
• NPRR1012, RTC - NP 9: Settlement and Billing
• NPRR1013, RTC - NP 1, 2, 16, and 25: Overview, Definitions and Acronyms, Registration and Qualification of Market Participants, and Market Suspension and Restart
• NPRR1014, BESTF-4 Energy Storage Resource Single Model
• NPRR1029, BESTF-6 DC-Coupled Resources
• Sections 25.5.2, 25.5.5, and 25.5.6
• NPRR1046, Additional Revisions to Remove Dynamically Scheduled Resource (DSR) from the Protocols
• NPRR1075, Update Telemetered HSL and/or MPC for ESRs in Real-Time to Meet Ancillary Service Resource Responsibility
• NPRR1172, Fuel Adder Definition, Mitigated Offer Caps, and RUC Clawback
• Section 5.7.2
• NPRR1204, Considerations of State of Charge with Real-Time Co-Optimization Implementation
• NPRR1216, Implementation of Emergency Pricing Program
• Phase 1
• NPRR1236, RTC+B Modifications to RUC Capacity Short Calculations
• NPRR1245, Additional Clarifying Revisions to Real-Time Co-Optimization
• NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era
• NPRR1268, RTC - Modification of Ancillary Service Demand Curves 
• NPRR1269, RTC+B Three Parameters Policy Issues
• NPRR1270, Additional Revisions Required for Implementation of RTC
• NPRR1282, Ancillary Service Duration under Real-Time Co-Optimization
• NPRR1290, Gap Resolutions and Clarifications for the Implementation of RTC+B
• Phase 1
• OBDRR020, RTC - Methodology for Setting Maximum Shadow Prices for Network and Power Balance Constraints
• OBDRR052, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era
• PGRR118, Related to NPRR1246, Energy Storage Resource Terminology Alignment for the Single-Model Era
• VCMRR044, RTC+B - Mitigated Offer Cap for Hydro Generation Resources

Please review the ERCOT website for previous Market Notices related to this subject.

CONTACT: If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at ClientServices@ercot.com.

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