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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 |
| SMOGRR031 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| SMOGRR032 | Move OBD to Section 12 – TDSP Access to EPS Metering Facility Notification Form |
| SMOGRR033 | Move OBD to Section 12 – TDSP Cutover Form for EPS Metering Points |
| RRGRR038 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| VCMRR042 | SO2 and NOx Emission Index Prices Used in Verifiable Cost Calculations |
| VCMRR043 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| VCMRR044 | RTC+B – Mitigated Offer Cap for Hydro Generation Resources |
| COPMGRR051 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| OBDRR054 | TDSP(s) Pre-Production Verification Testing |
| PGRR073 | Related to NPRR956, Designation of Providers of Transmission Additions |
| PGRR115 | Related to NPRR1234, Interconnection Requirements for Large Loads and Modeling Standards for Loads 25 MW or Greater |
| PGRR119 | Stability Constraint Modeling Assumptions in the Regional Transmission Plan |
| PGRR120 | SSO Prevention for Generator Interconnection |
| PGRR121 | Related to NOGRR272, Advanced Grid Support Requirements for Inverter-Based ESRs |
| PGRR122 | Reliability Performance Criteria for Loss of Load |
| PGRR123 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| PGRR124 | ESR Maintenance Exception to Modifications |
| PGRR125 | Update of LSIPA Compliance Attestation |
| PGRR126 | Related to NPRR1284, Guaranteed Reliability Load Process |
| RMGRR182 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| NOGRR264 | Related to NPRR1235, Dispatchable Reliability Reserve Service as a Stand-Alone Ancillary Service |
| NOGRR265 | Related to NPRR1238, Registration of Loads with Curtailable Load Capabilities |
| NOGRR272 | Advanced Grid Support Requirements for Inverter-Based ESRs |
| NOGRR273 | Related to NPRR1264, Creation of a New Energy Attribute Certificate Program |
| NOGRR274 | Conform Nodal Operating Guide to Revisions Implemented for NPRR1217, Remove Verbal Dispatch Instruction (VDI) Requirement for Deployment and Recall of Load Resources and Emergency Response Service (ERS) Resources |
| NOGRR275 | Eliminate Scheduling Center Requirements for QSEs That Are Not WAN Participants |
| 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 |
| SCR826 | ERCOT.com Enhancements |
| SCR829 | API for the NDCRC Application |
| SCR830 | Expose Limited API Endpoints Using Machine-to-Machine Authentication |
| SCR831 | Short Circuit Model Integration |
| NPRR956 | Designation of Providers of Transmission Additions |
| NPRR1070 | Planning Criteria for GTC Exit Solutions |
| NPRR1190 | High Dispatch Limit Override Provision for Increased Load Serving Entity Costs |
| NPRR1202 | Refundable Deposits for Large Load Interconnection Studies |
| NPRR1214 | Reliability Deployment Price Adder Fix to Provide Locational Price Signals, Reduce Uplift and Risk |
| NPRR1226 | Estimated Demand Response Data |
| NPRR1229 | Real-Time Constraint Management Plan Cost Recovery Payment |
| 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 |
| NPRR1238 | Registration of Loads with Curtailable Load Capabilities |
| NPRR1241 | Firm Fuel Supply Service (FFSS) Availability and Hourly Standby Fee |
| NPRR1255 | Introduction of Mitigation of ESRs |
| NPRR1256 | Settlement of MRA of ESRs |
| NPRR1263 | Remove Accuracy Testing Requirements for CCVTs |
| NPRR1264 | Creation of a New Energy Attribute Certificate Program |
| NPRR1265 | Unregistered Distributed Generator |
| NPRR1266 | Opt-Out Status Held by a Transmission-Voltage Customer Cannot be Transferred |
| NPRR1267 | Large Load Interconnection Status Report |
| NPRR1268 | RTC – Modification of Ancillary Service Demand Curves |
| NPRR1269 | RTC+B Three Parameters Policy Issues |
| NPRR1270 | Additional Revisions Required for Implementation of RTC |
| NPRR1271 | Revision to User Security Administrator and Digital Certificates Opt-out Eligibility |
| NPRR1272 | Voltage Support at Private Use Networks |
| NPRR1273 | Appropriate Accounting for ESRs in PRC Calculation |
| NPRR1274 | RPG Estimated Capital Cost Thresholds of Proposed Transmission Projects |
| NPRR1275 | Expansion of Qualifying Pipeline Definition for Firm Fuel Supply Service in Phase 3 |
| NPRR1276 | Move OBD to Section 22 – Emergency Response Service Procurement Methodology |
| NPRR1277 | Revisions to EAL Formula |
| NPRR1278 | Establishing Advanced Grid Support Service as an Ancillary Service |
| NPRR1279 | Reinstate Enhancements to the Exceptional Fuel Cost Process |
| NPRR1280 | Establish Process for Permanent Bypass of Series Capacitor |
| NPRR1281 | Improvements to Alternate FFSS Resource Designation |
| NPRR1282 | Ancillary Service Duration under Real-Time Co-Optimization |
| NPRR1283 | Modification of SSR Mitigation Timeline |
| NPRR1284 | Guaranteed Reliability Load Process |
| NPRR1285 | Improve Self-Commitment within RUC Opt Out Window |