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Market Rules

Balanced market rules are a basic element in Texas competition. Clear, predictable and well-designed rules help foster a stable electricity market. Electric Reliability Council of Texas (ERCOT) market rules are developed by participants from all aspects of the electricity industry. The rules and amendments are reviewed by the Public Utility Commission of Texas to ensure that they satisfy the public interest.

In this section, you will find the ERCOT protocols, guides, policies and procedures that help steer the Texas market participants.

Pending Revision Requests and Issues

Issue Title
SMOGRR028 Add Series Reactor Compensation Factors
VCMRR039 Related to NPRR1216, Implementation of Emergency Pricing Program
VCMRR040 Methodology for Calculating Fuel Adders for Coal-Fired Resources
VCMRR041 SO2 and NOx Emission Prices Used in Verifiable Cost Calculations
OBDRR046 Related to NPRR1188, Implement Nodal Dispatch and Energy Settlement for Controllable Load Resources
OBDRR051 Related to NPRR1216, Implementation of Emergency Pricing Program
PGRR073 Related to NPRR956, Designation of Providers of Transmission Additions
PGRR106 Clarify Projects Included in Transmission Project Information and Tracking (TPIT) Report
PGRR107 Related to NPRR1180, Inclusion of Forecasted Load in Planning Analyses
PGRR112 Dynamic Data Model and Full Interconnection Study (FIS) Deadline for Quarterly Stability Assessment
PGRR113 Related to NPRR1198, Congestion Mitigation Using Topology Reconfigurations
PGRR114 Related to NPRR1212, Clarification of Distribution Service Provider’s Obligation to Provide an ESI ID
PGRR115 Related to NPRR1234, Interconnection Requirements for Large Loads and Modeling Standards for Loads 25 MW or Greater
PGRR116 Related to NPRR1240, Access to Transmission Planning Information
RMGRR181 Alignment of Defined Term Usage and Resolution of Inconsistencies
NOGRR245 Inverter-Based Resource (IBR) Ride-Through Requirements
NOGRR255 High Resolution Data Requirements
NOGRR258 Related to NPRR1198, Congestion Mitigation Using Topology Reconfigurations
NOGRR262 Provisions for Operator-Controlled Manual Load Shed
NOGRR263 Clarification of Controllable Load Resource Primary Frequency Response Responsibilities
NOGRR264 Related to NPRR1235, Dispatchable Reliability Reserve Service as a Stand-Alone Ancillary Service
NOGRR265 Related to NPRR1238, Voluntary Registration of Loads with Curtailable Load Capabilities
NOGRR266 Related to NPRR1239, Access to Market Information
NOGRR267 Related to NPRR1240, Access to Transmission Planning Information
SCR826 ERCOT.com Enhancements
SCR827 Grid Conditions Graph Addition for Operating Reserve Demand Curve (ORDC) Level
NPRR956 Designation of Providers of Transmission Additions
NPRR1070 Planning Criteria for GTC Exit Solutions
NPRR1180 Inclusion of Forecasted Load in Planning Analyses
NPRR1188 Implement Nodal Dispatch and Energy Settlement for Controllable Load Resources
NPRR1190 High Dispatch Limit Override Provision for Increased Load Serving Entity Costs
NPRR1198 Congestion Mitigation Using Topology Reconfigurations
NPRR1200 Utilization of Calculated Values for Non-WSL for ESRs
NPRR1202 Refundable Deposits for Large Load Interconnection Studies
NPRR1212 Clarification of Distribution Service Provider’s Obligation to Provide an ESI ID
NPRR1214 Reliability Deployment Price Adder Fix to Provide Locational Price Signals, Reduce Uplift and Risk
NPRR1215 Clarifications to the Day-Ahead Market (DAM) Energy-Only Offer Calculation
NPRR1216 Implementation of Emergency Pricing Program
NPRR1217 Remove Verbal Dispatch Instruction (VDI) Requirement for Deployment and Recall of Load Resources and Emergency Response Service (ERS) Resources
NPRR1218 REC Program Changes Per P.U.C. SUBST. R. 25.173, Renewable Energy Credit Program
NPRR1219 Methodology Revisions and New Definitions for the Report on Capacity, Demand and Reserves in the ERCOT Region (CDR)
NPRR1220 Market Restart Approval Process Modifications
NPRR1221 Related to NOGRR262, Provisions for Operator Controlled Manual Load Shed
NPRR1222 Public Utility Commission of Texas Approval of the Methodology for Determining Ancillary Service Requirements
NPRR1223 Addition of TA Contact Information Into TDSP Application Form
NPRR1224 ECRS Manual Deployment Triggers
NPRR1225 Exclusion of Lubbock Load from Securitization Charges
NPRR1226 Demand Response Monitor
NPRR1227 Related to RMGRR181, Alignment of Defined Term Usage and Resolution of Inconsistencies
NPRR1228 Continued One-Winter Procurements for Firm Fuel Supply Service (FFSS)
NPRR1229 Real-Time Constraint Management Plan Energy Payment
NPRR1230 Methodology for Setting Transmission Shadow Price Caps for an IROL in SCED
NPRR1231 FFSS Program Communication Improvements and Additional Clarifications
NPRR1232 Standing Deployment of ECRS in the Operating Hour for a Portion of ECRS that is Provided from SCED-Dispatchable Resources
NPRR1233 Modification of Weatherization Inspection Fees on the ERCOT Fee Schedule
NPRR1234 Interconnection Requirements for Large Loads and Modeling Standards for Loads 25 MW or Greater
NPRR1235 Dispatchable Reliability Reserve Service as a Stand-Alone Ancillary Service
NPRR1236 RTC+B Modifications to RUC Capacity Short Calculations
NPRR1237 Retail Market Qualification Testing Requirements
NPRR1238 Voluntary Registration of Loads with Curtailable Load Capabilities
NPRR1239 Access to Market Information
NPRR1240 Access to Transmission Planning Information