Market Rules 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

COPMGRR020 Creating Subsection 10.3, Unregistered Distributed Generation Reports
COPMGRR022 Updating Section 10, Extracts and Reports
There are currently no open issues.
LPGRR038 Revisions for Texas Nodal Market Implementation and Synchronization with PRR821, Update of Section 21, Process for Protocol Revision
LPGRR039 Revisions for Texas Nodal Market Implementation Part Two
LPGRR040 Administrative Changes for October 1, 2010 Load Profiling Guide
NOGRR034 Rescind Telemetry Performance Calculation Exclusions
NOGRR039 Synchronization of Section 1 with Nodal Protocols
NOGRR041 Synchronization of Section 2 with Nodal Protocols
NOGRR042 Synchronization of Section 3 with Nodal Protocols
NOGRR043 Synchronization with OGRR208,Voltage Ride-Through (VRT) Requirement
NOGRR044 Clarification of a PSS In-Service
NOGRR045 Synchronization of OGRR219, Time Error Correction
NOGRR046 Synchronization of Sections 4 and 5 with Nodal Protocols
NOGRR047 Synchronization of Sections 6 and 7 with Nodal Protocols
NOGRR048 Synchronization with OGRR240, CREZ Facility Protection and Control Requirements
NOGRR049 Alignment with NERC Reliability Standard PRC-001-1, System Protection Coordination
NOGRR050 Resolution of Reporting Issues Related to NPRR219
NOGRR051 Synchronization with OGRR192 and OGRR238
NPRR190 Clarification of Resource Definitions and Resource Registration of Self-Serve Generators for Reliability Purposes
NPRR209 Data Posting Changes to Comply with P.U.C. Subst. R. 25.505
NPRR213 Deadlines for Initiating Alternative Dispute Resolution
NPRR219 Resolution of Alignment Items A33, A92, A106, and A150 - TSPs Must Submit Outages for Resource Owned Equipment and Clarification of Changes in Status of Transmission Element Postings
NPRR220 Nodal Requirement of Declaring an EEA for Reserves More than 500 MW
NPRR231 Treatment of RMR Units in the Day-Ahead Market (formerly “Remove RMR Units from the Day-Ahead Market”)
NPRR232 Clarification of Block Load Transfer Registration and Deployment
NPRR238 Resolution of Alignment Item A47, A59, A104, A105, A114, A115, A130, A188, and A189 - Provides Clarification and Updates to Network Operations Model Processes for Resource Entities
NPRR240 Proxy Energy Offer Curve
NPRR241 Aggregate Incremental Liability (AIL) Calculation and Credit Reports Publish Corrections
NPRR243 Load Resource Disqualification, Unannounced Testing, and Compliance
NPRR244 Clarification of Other Binding Documents
NPRR246 Requirement for Resource Entities to Update Resource Parameters
NPRR247 Retail Market Testing Updates Due to the Merger of the TX SET and TTPT Working Groups
NPRR248 Removal of Loads from NOIE Load Zone (formerly “Removal of Loads from Pre-1999 NOIE Load Zone”)
NPRR249 Resolution of Alignment Item A155 and A159 – Removal of Text Reason Requirement (formerly “Removal of Text Reason Requirement”)
NPRR250 Suspension of Annual Profile ID Validation With Advanced Meter Deployment
NPRR251 Synchronization of PRR845, Definition for IDR Meters and Optional Removal of IDR Meters at a Premise Where an Advanced Meter Can be Provisioned
NPRR252 Synchronization of PRR758, Clarification of Language Related to Generation Netting for ERCOT Polled Settlement Meters
NPRR253 CRR Balancing Account Invoice and Settlement and Billing Dispute Process
NPRR254 Updates to Protocol Sections 14 and 18
NPRR255 Resolution of Alignment Item A81 - DRUC Timing and Execution when DAM is Delayed or Aborted
NPRR256 Synchronize Nodal Protocols with PRR787, Add Non-Compliance Language to QSE Performance Standards (formerly “Add Violation Language to QSE Performance Standards”)
NPRR257 Synchronization with Nodal Operating Guide Section 9, Monitoring Programs
NPRR258 Synchronization with PRR824 and PRR833 and Additional Clarifications
NPRR259 Resolution of Alignment Items A175 and A176 - Settlement of Generation Resources Dispatched to Meet System Reliability Requirements
NPRR260 Providing Access to MIS Secure Area to MIS Registered Users
NPRR261 Revision of Data Submission Timeline for Network Model
NPRR262 Protocol Synchronization for Nodal Implementation Surcharge
NPRR263 Resolution of Alignment Item A99 - Settlement Point Price Calculation When Busses are De-energized
NPRR264 Clarification of Nodal Protocol Requirements for Generators With Multiple Points of Interconnection
NPRR265 MIS Secure Area Posting of Resource Category – As-Built Clarification
NPRR266 Installed Capacity of Unregistered Distributed Generation (DG)
NPRR267 Allow ERCOT to Manage Operations Model Pseudo Devices
NPRR268 Posting Requirements of Verifiable Costs Documents
There are currently no open issues.
There are currently no open issues.
PRR834 ERCOT Load Forecast Accuracy
PRR843 Add Regional Planning Section to Protocols
PRR846 Deadlines for Initiating Alternative Dispute Resolution
PRR850 Weather Responsiveness Determination for Interval Data Recorders
RMGRR086 Submission of Distributed Generation Data for Advanced Meters
RMGRR088 Updates to the IDR Meter Installation and Removal Processes
RMGRR089 Revisions for Texas Nodal Market Implementation (Part 3)
RMGRR090 Revisions for Texas Nodal Market Implementation (Part 4)
SMOGRR009 Submittal Timeline for EPS Metering Design Proposals
SCR759 acLineSegment Name Length Increase in Information Model Manager
TXSET087 PUCT Substantive Rule ยง25.493 (e) states that ERCOT “shall develop procedures to facilitate the expeditious transfer of large numbers of customers from one rep to another.”
TXSET104 Add additional SAC04 Codes for Transition Charges, Transition Charge Off Allowance, Credits and Weather events
TXSET105 Support processes related to PUCT Project 37291 - Meter Tampering and Disconnection and Reconnection of service for customers with Advanced Meters
TXSET106 With the new functionality provided by AMS meters to detect power outages and power restoration and to allow customers to request power outage/restoration notifications via Smart Meter Texas there is need for TDSPs to receive customer contact information via the 814_PC transaction.
TXSET107 PUCT Project 37622 proposes new Critical Care Status designations that would add new identification requirements to all affected TX SET Implementation Guides.
TXSET108 TX SET Guides should be update to reflect correct information
TXSET110 Remove the 814_07, 814_15 & 814_23 as valid TX SET Transactions
TXSET111 Find a way to better track how quickly Disconnect and Reconnects are worked.