| # | Title | Description | Date Posted | Sponsor | Urgent | Protocol Sections | Current Status | Effective Date(s) |
|---|---|---|---|---|---|---|---|---|
| NOGRR001 | Nodal Operating Guides - Section 1, Overview | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 1 of the Nodal Operating Guides. | 06/21/2007 | Operating Guides Revision Task Force (OGRTF) | No | 1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR002 | Nodal Operating Guides - Section 2, System Operations and Control Requirements | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 2 of the Nodal Operating Guides. | 06/21/2007 | Operating Guides Revision Task Force (OGRTF) | No | 2 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (03/01/08 Nodal Operating Guide Library) |
| NOGRR003 | Nodal Operating Guides - Section 3, Resource Testing and Qualification Procedures | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 3 of the Nodal Operating Guides. | 06/21/2007 | Operating Guides Revision Task Force (OGRTF) | No | 3 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR004 | Nodal Operating Guides - Section 4, Emergency Operation | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 4 of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR005 | Nodal Operating Guides - Section 5, Planning | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 5 of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 5 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR006 | Nodal Operating Guides - Section 6, Disturbance Monitoring and System Protection | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 6 of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 6 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR007 | Nodal Operating Guides - Section 7, Telemetry and Communication | This nodal operating guide revision request (nogrr) proposes language for section 7 of the nodal operating guides. | 06/21/2007 | OGRTF | No | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
|
| NOGRR008 | Nodal Operating Guides - Section 8 - Attachment A, Detailed Black Start Information | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment A of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment A | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR009 | Nodal Operating Guides - Section 8 - Attachment B, Relay Misoperation Report | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment B of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment B | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR010 | Nodal Operating Guides - Section 8 - Attachment C, Turbine Governor Speed Tests | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment C of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment C | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR011 | Nodal Operating Guides - Section 8 - Attachment D, Seasonal Unit Net Real Power Capability Verification | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment D of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment D | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR012 | Nodal Operating Guides - Section 8 - Attachment E, Biennial Unit Reactive Limits (Lead and Lag) Verification | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment E of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment E | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR013 | Nodal Operating Guides - Section 8 - Attachment F, Seasonal Hydro Responsive Reserve Net Capability Verification | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment F of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment F | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR014 | Nodal Operating Guides - Section 8 - Attachment G, Load Resource Tests | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment G of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment G | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR015 | Nodal Operating Guides - Section 8 - Attachment H, Unit Alternative Fuel Capability | This Nodal Operating Guide Revision Request (NOGRR) proposes language for Section 8, Attachment H of the Nodal Operating Guides. | 06/21/2007 | OGRTF | No | 8, Attachment H | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/07 Nodal Operating Guide Library) |
| NOGRR018 | Synchronization of OGRR204, Hotline Technology Update | This Nodal Operating Revision Request (NOGRR) incorporates relevant language from OGRR204 which was approved by TAC on February 7, 2008. | 03/03/2008 | OGRTF | No | 7.1.2 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (07/01/08 Nodal Operating Guide Library) |
| NOGRR019 | Synchronization of OGRR206, Black Start Satellite Phones | This Nodal Operating Revision Request (NOGRR) incorporates relevant language from OGRR206 which was approved by TAC on February 7, 2008. | 03/03/2008 | OGRTF | No | 4.6.5 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (07/01/08 Nodal Operating Guide Library) |
| NOGRR020 | Synchronization of OGRR198, Firm Load Shed Implementation Time Periods | This Nodal Operating Revision Request (NOGRR) incorporates relevant language from OGRR198 which was approved by TAC on 03/06/08. | 04/16/2008 | OGRTF | No | 4.5.3 | Approved |
09/01/2008
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (09/01/08 Nodal Operating Guide Library) |
| NOGRR021 | Synchronization of OGRR205, Modify Responsive Reserve Service Obligation | This Nodal Operating Revision Request (NOGRR) incorporates relevant language from OGRR205 which was approved by TAC on 04/04/08. | 04/16/2008 | OGRTF | No | 2.3.1, 2.3.1.1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (09/01/08 Nodal Operating Guide Library) |
| NOGRR022 | EECP Media Appeal Change | This Nodal Operating Guide Revision Request (NOGRR) removes required energy conservation media appeal from Emergency Electric Curtailment Plan (EECP) Step Two and allows ERCOT management to issue a media appeal for energy conservation at management’s discretion, without requiring ERCOT CEO authorization. | 07/22/2008 | John Jonte on behalf of the Operations Working Group (OWG) | No | 4.5.3, 4.5.3.1, 4.5.3.3 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (02/01/09 Nodal Operating Guide Library) |
| NOGRR023 | Hotline Changes for QSEs Representing Multiple Entities | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Operating Guide Revision Request (OGRR) 214. This NOGRR changes the requirement for Market Participants who represent other Entities through a Qualified Scheduling Entity (QSE) Agency Agreement to have only one (1) dedicated Hotline circuit. | 11/20/2008 | ERCOT | No | 7.1.2 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (04/01/09 Nodal Operating Guide Library) |
| NOGRR025 | Monitoring Programs for QSEs, TSPs, and ERCOT | This Nodal Operating Guide Revision Request (NOGRR) adds Section 9 to incorporate metrics to be monitored and reported on for Qualified Scheduling Entities (QSEs), Resources, Transmission Service Providers (TSPs), and ERCOT by ERCOT. | 02/06/2009 | ERCOT | Yes | 2.2.10, 2.2.11, 9 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (10/01/09 Nodal Operating Guide Library) |
| NOGRR026 | Change the name of Emergency Electric Curtailment Plan (EECP) to Energy Emergency Alert (EEA) and Synchronization of EEA Steps with Protocols | This Nodal Operating Guide Revision Request (NOGRR) changes the name of the Emergency Electric Curtailment Plan (EECP) to Energy Emergency Alert (EEA), the defined term "Alert" to "Watch", and replaces "BtB" with "DC-Tie". This NOGRR also aligns the EEA Steps in the Nodal Operating Guides with the Nodal Protocols. The NOGRR deletes the definition of "Physical Responsive Capability (PRC)" since this term is already defined in the Nodal Protocols. | 07/13/2009 | Colleen Frosch | No | 1.4, Definitions 2.2.1, Overview 2.2.9.2, Time Synchronization 2.3, Ancillary Services 2.6.1, Automatic Firm Load Shedding 4.1, Introduction 4.2.3, Alert 4.4, Block Load Transfers between ERCOT and Non-ERCOT System 4.5, Emergency Electric Curtailment Plan (EECP) 4.5.1, General 4.5.3, Implementation 4.5.3.1, General Procedures Prior to EECP Operations 4.5.3.2, General Procedures During EECP Operations 4.5.3.3, EECP Steps 4.5.3.5, EECP Termination | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (12/01/09 Nodal Operating Guide Library) |
| NOGRR027 | Revise the Process for Submitting Biennial Unit Reactive Limits (Lead and Lag) | This Nodal Operating Guide Revision Request (NOGRR) deletes Attachment E, Biennial Unit Reactive Limits (Lead and Lag) Verification in Section 8. Attachment E is no longer used as test results are submitted through the Market Information System (MIS) Certified Area. This NOGRR also updates other sections to align with the current process. | 07/17/2009 | LCRA | No | 3.3.2.1, 3.3.2.2, 3.3.2.3, Section 8 - Attachment E | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (05/01/10 Nodal Operating Guide Library) |
| NOGRR028 | Synchronization - Backup Control Plan Submission Process | This Nodal Operating Guide Revision Request (NOGRR) proposes language changes to clarify the frequency and submittal process of back-up control plans. | 08/14/2009 | OWG | No | 3.2.1, 3.9 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (08/01/10 Nodal Operating Guide Library) |
| NOGRR029 | Synchronization of OGRR224, Special Protection System (SPS) Operations Under No Contingency | This Nodal Operating Guide Revision Request (NOGRR) adds addtional monitoring and control requirements for Special Protection Systems (SPSs) that involve generation reduction to synchronize the Nodal Operating Guides with OGRR224. | 09/02/2009 | John Dumas | No | 6.2.1, Introduction 6.2.2 Design and Operating Requirements for ERCOT System Facilities | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (02/01/10 Nodal Operating Guide Library) |
| NOGRR030 | Synchronization -- Total Transmission Capacity Correction | This Nodal Operating Guide Revision Request (NOGRR) replaces the acronym Total Transfer Capability (TTC) with Total Transmission Capacity (TTC). | 09/03/2009 | ERCOT | Yes | 3.9.4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/09 Nodal Operating Guide Library) |
| NOGRR031 | Synchronization with OGRR218, Revise Training Requirements for QSEs | This Nodal Operating Guide Revision Request (NOGRR) changes the five day (40 hours) emergency training requirements to 32 hours for QSEs who represent Generation or Load Resources and eight hours for Qualified Scheduling Entity (QSE) operators who do not represent Generation or Load Resources. | 10/09/2009 | Shell Energy | No | 1.5.2 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (03/01/10 Nodal Operating Guide Library) |
| NOGRR032 | Use of Consistent Rating Terminology | This Nodal Operating Guide Revision Request (NOGRR) proposes language changes to align rating terminology in the Nodal Operating Guides with the terminology in the Nodal Protocols. Utilization of the same verbiage helps alleviate communication issues and also removes the possible interpretation of additional rating requirements. | 12/03/2009 | NDSWG | No | 3.9.4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (06/01/10 Nodal Operating Guide Library) |
| NOGRR033 | Alignment with NPRR203, Amend Telemetry Bus Accuracy Requirements | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with changes proposed by Nodal Protocol Revision Request (NPRR) 203, Amend Telemetry Bus Accuracy Requirements, which clarifies the type of equipment being reported. | 12/22/2009 | Ebby John on behalf of the Network Data Support Working Group (NDSWG) | No | 9.3.1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (06/01/10 Nodal Operating Guide Library) |
| NOGRR034 | Rescind Telemetry Performance Calculation Exclusions | This Nodal Operating Guide Revision Request (NOGRR) proposes the removal of language which allows Market Participants to, at their discretion, have any of their Telemetry Performance data excluded from the periodic calculations in the Telemetry Performance Monitoring Program. | 01/22/2010 | ERCOT | No | 7.3.3 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (10/01/10 Nodal Operating Guide Library) |
| NOGRR035 | Synchronization -- Special Protection System Monitoring Requirements | This Nodal Operating Guide Revision Request (NOGRR) requires automated notification of Special Protection System (SPS) status and clarifies SPS arming and reporting requirements. | 02/17/2010 | ERCOT | No | 6.2.2 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (08/01/10 Nodal Operating Guide Library) |
| NOGRR036 | Synchronization with PRR821 and PRR804 | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with PRR821, Update of Section 21, Process for Protocol Revision, and PRR804, Revisions to Section 21 Appeal Process. Specifically, this NOGRR revises Section 1.3 to more effectively align with the current stakeholder process and to provide that if a motion to approve a request fails, the revision request shall be deemed rejected by the body considering it and subject to appeal, unless at the same meeting that body later votes to recommend approval, remand, or refer the revision request. Changes were made to bring consistency between the NOGRR process, where applicable; remove arbitrary or conflicting timelines; clarify commenting process; expand on a revision request being deemed rejected to include email voting for the Reliability and Operations Subcommittee (ROS) and Technical Advisory Committee (TAC); and include formatting and administrative changes. | 03/19/2010 | ERCOT | No | 1.3 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (08/01/10 Nodal Operating Guide Library) |
| NOGRR037 | Synchronization with OGRR217, Relay Misoperation Report Format Change | This Nodal Operating Guide Revision Request (NOGRR) changes the format for reporting yearly relay misoperations from a report format to a data format. | 03/23/2010 | Glenn Hargrave on behalf of System Protection Working Group (SPWG) | No | 8, Attachment B | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan https://www.ercot.com/mktrules/nprotocols (08/01/10 Nodal Operating Guide Library) |
| NOGRR038 | Synchronization with OGRR243, Disturbance Monitoring Requirements Clarification | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with OGRR243 by changing data recording and reporting requirements for equipment operating at 100kV or above at Facilities where fault recording equipment is required. | 03/26/2010 | SPWG | No | 6.1.2.3, 6.1.2.4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (09/01/10 Nodal Operating Guide Library) |
| NOGRR039 | Synchronization of Section 1 with Nodal Protocols | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Nodal Protocols by adding additional detail to Nodal Operating Guide sections that are referenced in the Nodal Protocols as well as eliminating conflicts and redundancies between the Nodal Operating Guides and Nodal Protocols. This NOGRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage. These are shown below with the author "ERCOT Market Rules." | 05/10/2010 | NOGRRTF | No | 1.1, 1.2, 1.4, 1.5.1, 1.5.3 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (10/01/10 Nodal Operating Guide Library) |
| NOGRR040 | Administrative Changes for June 1, 2010 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2010. | 05/14/2010 | ERCOT | No | 4.5.3.4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (06/01/10 Nodal Operating Guide Library) |
| NOGRR041 | Synchronization of Section 2 with Nodal Protocols | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Nodal Protocols by adding additional detail to Nodal Operating Guide sections that are referenced in the Nodal Protocols as well as eliminating conflicts and redundancies between the Nodal Operating Guides and Nodal Protocols. This NOGRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage. These are shown below with the author "ERCOT Market Rules." | 05/27/2010 | NOGRRTF | No | 2.1, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.7, 2.2.8, 2.3, 2.3.1, 2.3.1.1, 2.3.1.2, 2.3.2, 2.3.2.1, 2.3.3, 2.5, 2.5.1, 2.6.2, 2.7.1, 2.7.2, 2.7.3, 2.7.4.1, 2.7.4.3, 2.8, 2.8.1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR042 | Synchronization of Section 3 with Nodal Protocols | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Nodal Protocols by adding additional detail to Nodal Operating Guide sections that are referenced in the Nodal Protocols as well as eliminating conflicts and redundancies between the Nodal Operating Guides and Nodal Protocols. This NOGRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage. These are shown below with the author "ERCOT Market Rules." | 05/27/2010 | NOGRRTF | No | 3.2, 3.2.1, 3.2.2, 3.2.4, 3.3.1, 3.3.2.2, 3.3.2.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, 3.9.1, 3.9.2, 3.9.3, 3.9.4, 9.3.6 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR043 | Synchronization with OGRR208,Voltage Ride-Through (VRT) Requirement | This Nodal Operating Guide Revision Request (NOGRR) relocates generator voltage requirements from Section 6, Disturbance Monitoring and System Protection, to Section 2, System Operation and Control Requirements, and establishes Voltage Ride-Through (VRT) requirements for Wind Generation Resources (WGRs) to synchronize with the zonal Operating Guides. Clarifications to Resource Entity responsibilities regarding reactive capability and communication of changes have also been made. | 06/04/2010 | Warren Lasher | No | 2.9, Voltage Ride-Through Requirements (new) 2.9.1, Additional Voltage Ride-Through Requirements for Wind Generation Resources (new) 3.3, Resource Entities 6.2.5.3.6, Automatic Under-Voltage Load Shedding (UVLS) Protection Systems | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR044 | Clarification of a PSS In-Service and Improved Communication Process for Changes in PSS Status (formerly "Clarification of a PSS In-Service") | This Nodal Operating Guide Revision Request (NOGRR) clarifies that a Power System Stabilizer (PSS) must be "On" and in an active MW range to be considered in service. This NOGRR also proposes language changes to improve the communication process for any change in PSS status. | 06/03/2010 | LCRA | No | 2.2.5, 2.2.6 | Approved |
03/01/2011
|
| NOGRR045 | Synchronization of OGRR219, Time Error Correction | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guide with Operating Guide Revision Request (OGRR) 219, Time Error Correction, which removes the requirement that ERCOT perform time error corrections for accumulated time errors exceeding five seconds. | 06/10/2010 | ERCOT | No | 2.2.9.1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR046 | Synchronization of Sections 4 and 5 with Nodal Protocols | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Nodal Protocols by adding additional detail to Nodal Operating Guide sections that are referenced in the Nodal Protocols as well as eliminating conflicts and redundancies between the Nodal Operating Guides and Nodal Protocols. This NOGRR also proposes non-substantive administrative changes, such as correcting acronym and defined term usage. These are shown with the author "ERCOT Market Rules." | 06/11/2010 | NOGRRTF | No | 4.1, 4.2, 4.2.3, 4.2.4, 4.3, 4.3.1, 4.5.1, 4.5.3, 4.5.3.2, 4.5.3.3, 4.5.3.4, 5.1.1, 5.1.2, 5.1.3, 5.2, 5.5, 5.5, 5.5.1 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR047 | Synchronization of Sections 6 and 7 with Nodal Protocols | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Nodal Protocols by adding additional detail to Nodal Operating Guide sections that are referenced in the Nodal Protocols as well as eliminating conflicts and redundancies between the Nodal Operating Guides and Nodal Protocols. | 06/24/2010 | Brad Calhoun on behalf of the Nodal Operating Guide Review and Revision Task Force (NOGRRTF) | No | 6.1.1, 6.1.2.2, 6.1.2.4, 6.1.2.5, 6.1.4, 6.2.1, 6.2.2, 6.2.3, ies 6.2.5.1.1, 6.2.5.1.2, 6.2.5.1.3, 6.2.5.1.4, 6.2.5.1.5, 6.2.5.2.1, 6.2.5.2.2, 6.2.5.2.3, 6.2.5.2.4, 6.2.5.2.8, 6.2.5.3.1, 6.2.5.3.2, 6.2.5.3.4, 6.2.5.3.5, 6.2.5.3.6, 7.1, 7.3, 7.3.4 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR048 | Synchronization with OGRR240, CREZ Facility Protection and Control Requirements | This Nodal Operating Guide Revision Request (NOGRR) provides more stringent protection and control requirements for all new Competitive Renewable Energy Zone (CREZ) 345 kV Facilities. | 07/23/2010 | AEPSC | Yes | 6.2.1, 6.2.1.2, 6.2.4, 6.2.5.1.1, 6.2.5.1.3, 6.2.5.1.5, 6.2.5.2.1, 6.2.5.2.2, 6.2.5.2.3, 6.2.5.2.6, 6.2.5.2.7, 6.2.5.2.8, 6.2.5.3.1, 6.2.5.3.2, 6.2.5.3.3, 6.2.5.3.6, 7.1.2 | Approved |
12/01/2010
|
| NOGRR049 | Alignment with NERC Reliability Standard PRC-001-1, System Protection Coordination | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the North American Electric Reliability Corporation (NERC) Reliability Standards, specifically PRC-001-1, System Protection Requirements, Section B. Requirements, R2.2. | 08/06/2010 | SPWG | No | 6.2.4 | Approved |
01/01/2011
|
| NOGRR050 | Resolution of Reporting Issues Related to NPRR219 | This Nodal Operating Guide Revision Request (NOGRR) proposes revisions to remove the requirement for ERCOT to produce several reports related to Outage Scheduling from the current Nodal Operating Guide and proposes inserting those requirements as grey-box language until such time ERCOT Systems can be changed to include only the Transmission Service Provider's (TSP's) Outages in the reports. | 08/12/2010 | DeAnn Walker on behalf of CenterPoint Energy | Yes | 9.2.3 | Approved |
09/27/2016
|
| NOGRR051 | Synchronization with OGRR192 and OGRR238 | This Nodal Operating Guide Revision Request synchronizes the Nodal Operating Guides with two approved Operating Guide Revision Requests (OGRRs), OGRR192, Combustion Turbine Governor Performance Test Forms and OGRR238, WGR Primary Frequency Response. This Nodal Operating Guide Revision Request (NOGRR) adds new governor performance and Wind-powered Generation Resource (WGR) primary frequency response testing procedures. | 08/17/2010 | ERCOT | Yes | 2.2.7, 2.3, 8C | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR052 | Conductor/Transformer Transmission Facility Rating | This NOGRR adds the Conductor/Transformer rating normally used as Rate C in the Annual Planning Models as a fourth Transmission facility rating required to be provided by Transmission Service Providers (TSPs). | 09/09/2010 | ERCOT | No | 3.9.4 | Approved |
07/01/2011
|
| NOGRR053 | Synchronization with OGRR226, Generation Resource Response Time Requirement | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with the Operating Guide by adding language specified for Resource response times for certain directed and automatic actions. | 09/15/2010 | Frank Owens on behalf of the Operations Working Group (OWG) | Yes | 2.2.10 | Approved |
12/01/2010
or per the Nodal Protocol Transition Plan http://www.ercot.com/mktrules/protocols (11/01/10 Nodal Operating Guide Library) |
| NOGRR054 | Change in Facilitator for the Annual Operations Training Seminar | This Nodal Operating Guide Revision Request (NOGRR) changes the responsibility of the annual Operations Training Seminar from the Texas Reliability Entity (TRE) to ERCOT. | 12/21/2010 | CenterPoint Energy | No | 1.5.3 | Approved |
06/01/2011
|
| NOGRR055 | Deletion of an Invalid Reference to a Non-Existent NERC Term | This Nodal Operating Guide Revision Request (NOGRR) removes an invalid reference to a non-existent North American Electric Reliability Corporation (NERC) term. | 12/21/2010 | ERCOT | No | 2.2.8 | Approved |
05/01/2011
|
| NOGRR056 | Synchronization with NPRR291, Reduce the Comment Period for NPRRs and SCRs | This Nodal Operating Guide Revision Request (NOGRR) reduces the comment period for NOGRRs from 21 days to 14 days and removes the requirement for the comment period to end at least three Business Days prior to the next regularly scheduled Operations Working Group (OWG) meeting. | 12/27/2010 | ERCOT | No | 1.3.4.3 | Approved |
06/01/2011
|
| NOGRR057 | Daily Report Containing Loss of Generation Greater than 450 MW | This Nodal Operating Guide Revision Request (NOGRR) adds a requirement for ERCOT to post loss of generation greater than 450 MW. | 01/06/2011 | LCRA | Yes | 9.4.3 | Approved |
04/01/2011
|
| NOGRR058 | Deletion of Section 5, Planning | This Nodal Operating Guide Revision Request (NOGRR) deletes Section 5 from the Nodal Operating Guide, which is being relocated to Section 5 of the Planning Guide via PGRR005, New Planning Guide Section 5, Planning Criteria. | 01/18/2011 | Rob Lane on behalf of the Planning Working Group (PLWG) | No | Section 5 (delete) | Approved |
10/01/2011
|
| NOGRR059 | Administrative Changes for March 1, 2011 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates Protocol references in the Nodal Operating Guides. | 02/01/2011 | ERCOT | No | 2.3.1.2 | Approved |
03/01/2011
|
| NOGRR060 | Updating the Term Resource Plan to Current Operating Plan | This Nodal Operating Guide Revision Request (NOGRR) replaces the term "Resource Plan" with the term"Current Operating Plan" in the instance where the change in terminology was not previously made. | 02/01/2011 | Luminant Energy | No | 4.5.3.2 | Approved |
07/01/2011
|
| NOGRR061 | Posting Requirement for Hydro-Responsive Testing | This Nodal Operating Guide Revision Request (NOGRR) changes the requirement for ERCOT to post a monthly report for hydro-responsive testing to a seasonal report, aligning the Nodal Operating Guides with the Protocols. | 02/04/2011 | ERCOT | No | 9.4.1 | Approved |
07/01/2011
|
| NOGRR062 | Require Voltage Ride-Through Capability for IRRs | This Nodal Operating Guide Revision Request (NOGRR) proposes a requirement for Voltage Ride-Through (VRT) capability for new IRRs | 03/03/2011 | ERCOT | Yes | 2.9.1 | Approved |
05/01/2011
|
| NOGRR063 | Additional Method for Submitting Back-up Control Plans | This Nodal Operating Guide Revision Request (NOGRR) provides for an additional method of submitting back-up control plans. | 03/04/2011 | ERCOT | No | 3.2.1, 3.7 | Approved |
08/01/2011
|
| NOGRR064 | QSE Acknowledgement of VSS Dispatch Instructions | This Nodal Operating Guide Revision Request (NOGRR) revises language in Section 2.7.4.1 to be consistent with paragraph (3) of Section 2.2.10, Generation Resource Response Time Requirements. Section 2.7.4.1 requires Qualified Scheduling Entities (QSEs) to respond within two minutes of receipt of a Dispatch Instruction from ERCOT for Voltage Support Service (VSS) while paragraph (3) of Section 2.2.10 requires a response within five minutes. | 03/08/2011 | Luminant Energy | No | 2.7.4.1 | Approved |
08/01/2011
|
| NOGRR066 | ERCOT WAN Connection Termination Requirement | This Nodal Operating Guide Revision Request (NOGRR) deletes the requirement to terminate the Wide Area Network (WAN) connection at the Market Participant’s control center. | 03/09/2011 | Luminant Energy | No | 7.1.2 | Approved |
08/01/2011
|
| NOGRR067 | Review and Analysis of Turbine Speed Governor Performance | This Nodal Operating Guide Revision Request (NOGRR) provides a clearer explanation of the review and analysis performed by a Qualified Scheduling Entity (QSE) related to turbine speed Governor performance during periods of ERCOT System frequency deviations. It also changes the term "frequency deviations" to "frequency disturbance events" consistent with the scope of the Performance Disturbance Compliance Working Group (PDCWG). | 03/10/2011 | Luminant | No | 2.2.7 | Approved |
10/31/2011
All |
| NOGRR068 | Hydro-Responsive Reserve | This Nodal Operating Guide Revision Request (NOGRR) adds frequency requirement for the deployment of synchronous condenser fast response service to the Nodal Operating Guide. | 03/31/2011 | ERCOT | Yes | 2.3.1.1, 2.3.1.2 | Approved |
07/08/2011
|
| NOGRR069 | Relay Misoperation Reporting Changes for Consistency with ERO-RAPA Proposal | This Nodal Operating Guide Revision Request (NOGRR) updates ERCOT’s requirements for relay misoperation reporting in order to be consistent with NERC’s ERO-RAPA proposal for quarterly reporting. Changes to Section 6.2.3 govern the events that qualify as a relay misoperation while the changes to Section 8, Attachment B, govern what data must be submitted in the event of a relay misoperation. | 04/06/2011 | SPWG | Yes | 6.2.1, 6.2.3, 8B | Approved |
10/01/2011
|
| NOGRR070 | Synchronization with NPRR356, EEA Changes Related to Dispatch Instructions and BLTs | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 356, EEA Changes Related to Dispatch Instructions and BLTs, which was approved by the ERCOT Board on August 16, 2011; and which changes the need to issue Dispatch Instructions to suspend any ongoing ERCOT-required generating unit or Resource performance testing and moves the requirement to inquire about the availability of Block Load Transfers (BLTs) from Energy Emergency Alert (EEA) Level 2A to EEA Level 2B. | 05/04/2011 | ERCOT | No | 4.5.3.1, 4.5.3.2, 4.5.3.3 | Approved |
10/01/2011
|
| NOGRR071 | Synchronization with NPRR362, Changes to PRC Calculation | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 362, Changes to PRC Calculation, which proposes to properly reflect the current Responsive Reserve (RRS) which is supplied from Load Resources into the PRC calculation. NPRR362 also deletes the method for calculating the PRC from Energy Emergency Alert (EEA) Levels 1 and 2. | 05/04/2011 | ERCOT | No | 4.5.3.3 | Approved |
10/01/2011
|
| NOGRR072 | Administrative Changes for June 1, 2011 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2011. | 05/16/2011 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2011
|
| NOGRR074 | Clarified Responsible Entities for Reporting Sabotage Information to NERC | This Nodal Operating Guide Revision Request (NOGRR) adds Entities responsible for notifying North American Electric Reliability Corporation (NERC) or other governmental agencies of a threat of sabotage. | 05/18/2011 | Frank Owens on Behalf of the Nodal Protocol and Guides Resolution Task Force (NPGRTF) | No | 3.7.3, 3.7.4, 3.8 | Approved |
01/01/2012
|
| NOGRR076 | Synchronization with NPRR298 and New Format for Black Start Plans | This Nodal Operating Guide Revision Request (NOGRR): · Synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 298, New Definitions Related to Black Start and Clarification to the Hourly Standby Fee Payments for Black Start Resources (formerly "New Definitions Related to Black Start"), which introduced new black start terminology and corrected the acronym related to the Hourly Standby Fee Payment. NPRR298 was approved by the ERCOT Board on April 19, 2011. · Introduces new black start terminology to the Nodal Operating Guides; · Creates a requirement for all Transmission Operators (TOs) to submit their Black Start Plans to ERCOT by November 1 of each year; andIntroduces a template for Black Start Plans to the Nodal Operating Guides. | 07/05/2011 | Black Start Working Group (BSWG) | No | 1.4, 1.5.1, 2.3, 4.3, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.6.3, 4.6.4, 4.6.5, 8A, 8E (new) | Approved |
12/14/2011
|
| NOGRR077 | Synchronization with NPRR379, EILS Dispatch Sequence and Performance Criteria Upgrades | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 379, EILS Dispatch Sequence and Performance Criteria Upgrades, which provides ERCOT Operators with enhanced flexibility for managing grid conditions during an Energy Emergency Alert (EEA) by requiring dispatch of EILS prior to or in conjunction with dispatch of Load Resources providing Responsive Reserve (RRS) in EEA Level 2. | 07/05/2011 | ERCOT | No | 4.5.3.3 and 9.1.4 | Approved |
07/01/2012
|
| NOGRR079 | Administrative Changes for the October 1, 2011 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the Nodal Operating Guides to reflect the name change of Texas Regional Entity (TRE) to Texas Reliability Entity (Texas RE). | 09/12/2011 | ERCOT | No | 1.3.1, 1.3.2, 1.3.3, 1.3.4.3, 1.3.4.4, 1.3.4.12, 1.5.4, 2.2.8, 2.7.4.1, 3.7.2, 6.2.2, 9.1.8, 9.3.1 | Approved |
10/01/2011
|
| NOGRR080 | Inadvertent Interchange and Inadvertent Energy Clarification | This Nodal Operating Guide Revision Request (NOGRR) modifies language in Sections 1.4 and 2.8.1 related to inadvertent energy. | 09/21/2011 | Frank Owens on behalf of Nodal Protocol and Guides Resolution Task Force (NPGRTF) | No | 1.4, 2.8.1 | Approved |
03/01/2012
|
| NOGRR081 | Synchronization with NPRR374, Modification of SCR Process and Urgency Requirements | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with changes proposed by Nodal Protocol Revision Request (NPRR) 374, which modified the requirements for Urgency. | 10/04/2011 | ERCOT | No | 1.3.5 | Approved |
03/01/2012
|
| NOGRR082 | Synchronization with NPRR258 and Alignment of Primary Frequency Response Test Procedures | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 258, Synchronization with PRR824 and PRR833 and Additional Clarifications, and revises the frequency response test procedure to be applicable to Intermittent Renewable Resources (IRRs). | 10/07/2011 | ERCOT | Yes | 8C | Approved |
01/01/2012
|
| NOGRR083 | Removal of Reporting Requirements for Vegetation-Related Line Outages | This Nodal Operating Guide Revision Request (NOGRR) deletes Section 3.7.2. | 10/10/2011 | OWG | No | 3.7.2, 3.7.3, 3.7.4 | Approved |
03/01/2012
|
| NOGRR084 | Daily Grid Operations Summary Report | This Nodal Operating Guide Revision Request (NOGRR) creates a summary level report of daily operational information to be posted on the Market Information System (MIS) Public Area. | 10/27/2011 | Jackie Ashbaugh on behalf of the MIS User Group | No | 9.3.10 (new) | Approved |
06/01/2012
|
| NOGRR085 | Replace TML References with MIS | This Nodal Operating Guide Revision Request (NOGRR) updates the Nodal Operating Guide to replace references to the Texas Market Link (TML) with the appropriate Market Information System (MIS) location. | 11/01/2011 | ERCOT | No | 9.1.6 | Approved |
04/01/2012
|
| NOGRR086 | Clarification of Seasonal Unit Capability Testing Requirements | This Nodal Operating Guide Revision Request (NOGRR) clarifies the seasonal unit capability testing requirement. | 11/01/2011 | ERCOT | No | 3.3.1 | Approved |
10/01/2012
|
| NOGRR087 | Reinsertion of Network Operations Modeling Requirements | This NOGRR reinserts a portion of the Nodal Operating Guide that was inadvertently deleted. | 11/30/2011 | Planning Working Group (PLWG) | Yes | 5, 5.1 | Approved |
01/06/2012
|
| NOGRR088 | Synchronization with NPRR424, Reactive Capability Testing Requirements for IRRs | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 424 which defines the reactive capability testing requirement for Intermittent Renewable Resources (IRRs). | 12/12/2011 | ERCOT | No | 3.3.2.2, 3.3.2.3 | Approved |
07/01/2012
|
| NOGRR089 | Clarification of Responsibilities for Black Start Resources and QSEs | This Nodal Operating Guide Revision Request (NOGRR) clarifies the responsibilities of the Black Start Resource and the Qualified Scheduling Entity (QSE) representing the Black Start Resource. It also clarifies language related to the Transmission Operator’s (TO’s) local Black Start plans and the QSE's Black Start procedures. | 12/14/2011 | Luminant | No | 4.6, 4.6.4, 8E, 9.4.2 | Approved |
07/01/2012
|
| NOGRR090 | Change in Entity Responsible for Reporting Participation in Severe Weather Drills | This Nodal Operating Guide Revision Request (NOGRR) changes the Entity responsible for reporting participation in the severe weather drill from the Texas Reliability Entity (Texas RE) to ERCOT. | 01/10/2012 | Operations Working Group (OWG) | No | 1.5.4 | Approved |
05/01/2012
|
| NOGRR091 | Criteria for the Selection of Operators | This Nodal Operating Guide Revision Request (NOGRR) adds clarification to the criteria for the selection of operators in the ERCOT Region. | 04/04/2012 | ERCOT | No | 1.5.5 | Approved |
10/01/2012
|
| NOGRR092 | Synchronization with NPRR451 | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with NPRR451, which implements provisions of P.U.C. Subst. R. 25.507. | 04/05/2012 | ERCOT | Yes | 4.5.3.3, 9.1.1, 9.1.4 | Approved |
06/08/2012
|
| NOGRR093 | Synchronization with NPRR365 | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 365, Change in Resource Outage Approvals from Eight to 45 Days, which was approved by the ERCOT Board on 9/20/11 and revised the deadline for ERCOT approval of Resource Outages from an eight-day notice to a 45-day notice while aligning the new Resource Outage timelines to match those of Transmission Outages. | 05/01/2012 | OWG | No | 9.1.6 | Approved |
06/13/2013
|
| NOGRR094 | Administrative Changes for June 1, 2012 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2012. | 05/02/2012 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2012
|
| NOGRR096 | Clarification of RRS Obligation | The Other Binding Document, Methodologies for Determining Ancillary Service Requirements, describes a process that may be used to procure additional Responsive Reserve Service (RRS). This Nodal Operating Guide Revision Request (NOGRR) references that Other Binding Document and also adds clarifying language affirming that the minimum RRS obligation remains unchanged (2300 MW), but that additional RRS may be procured if there is a reliability need. | 05/22/2012 | the Nodal Protocol and Guides Resolution Task Force | No | 2.3.1.1 | Approved |
10/01/2012
|
| NOGRR097 | New Section 8I, Black Start Resource Availability Test Form | This Nodal Operating Guide Revision Request (NOGRR) adds a Black Start Resource availability test form to the Nodal Operating Guide. | 05/25/2012 | ERCOT | No | 8I (new) | Approved |
10/01/2012
|
| NOGRR098 | Change of Facility Submission Time Lines to Align with Protocols | This Nodal Operating Guide Revision Request (NOGRR) clarifies the submission time line for facility reactive capability and other modeling information. | 05/25/2012 | ERCOT | No | 5.1 | Approved |
10/01/2012
|
| NOGRR100 | Extending Manual Time Error Correction Threshold | This Nodal Operating Guide Revision Request (NOGRR) extends the manual time error correction threshold from +/- 3 seconds to +/- 30 seconds. | 06/13/2012 | ERCOT | No | 2.2.9.1 | Approved |
11/01/2012
|
| NOGRR101 | Market Transparency for DC Tie Outage Information | This Nodal Operating Guide Revision Request (NOGRR) provides that ERCOT shall produce a detailed report regarding any outage of a Direct Current Tie (DC Tie) in a timely manner. | 07/26/2012 | Tenaska Power Services Co. | No | 10 (new), 10.1 (new) | Approved |
10/07/2013
|
| NOGRR102 | Synchronization with NPRR454, Removal of Unfunded Project List Language | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with Nodal Protocol Revision Request (NPRR) 454 (approved by the ERCOT Board on July 17, 2012) which removed language regarding the Unfunded Project List. This NOGRR also aligns the Nodal Operating Guides with the Protocols by requiring ERCOT’s opinion in the TAC Report for any NOGRR requiring an ERCOT project for implementation; and includes administrative alignment changes. | 07/31/2012 | ERCOT | No | 1.3.1, 1.3.4.5, 1.3.4.8, 1.3.4.10, and 1.3.4.11 | Approved |
12/01/2012
|
| NOGRR103 | Administrative Changes for October 1, 2012 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2012 which include changes to reflect proper legal Entity names and percentages for Load shed. | 08/27/2012 | ERCOT | No | 4.5.3.4 | Approved |
10/01/2012
|
| NOGRR105 | Generation Resource Frequency Response Test Procedure | This Nodal Operating Guide Revision Request (NOGRR) adds a Governor test form for Controllable Load Resources and proposes minor corrections to calculations. | 10/30/2012 | Performance, Disturbance, Compliance Working Group (PDCWG) | No | 8C | Approved |
02/11/2014
|
| NOGRR107 | Disturbance Monitoring Requirements Clarification | This Nodal Operating Guide Revision Request (NOGRR) clarifies disturbance monitoring requirements. | 11/12/2012 | SPWG | No | 6.1.1, 6.1.2, 6.1.2.2, 6.1.2.3, 6.1.2.4, 6.1.4, 6.2.1, 6.2.2 | Approved |
06/01/2013
|
| NOGRR108 | QSE and TSP Hotline Responsibilities | This Nodal Operating Guide Revision Request (NOGRR) adds the requirement for Qualified Scheduling Entities (QSEs) and Transmission Operators (TOs) to have a touchtone keypad on their Hotline phone. | 12/03/2012 | ERCOT | No | 7.1.2 | Approved |
04/01/2013
|
| NOGRR109 | Revisions to Definition of Credible Single Contingency for Operations Planning | This Nodal Operating Guide Revision Request (NOGRR) deletes the definition of Credible Single Contingency from the Operating Guides. | 03/05/2013 | Operations Working Group (OWG) | No | 1.4 | Approved |
02/01/2014
|
| NOGRR110 | Synchronization with NPRR529, Congestion Management Plan | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guide with revisions proposed by NPRR529, Congestion Management Plan and also: · Moves language related to Special Protection Systems (SPSs) and Remedial Action Plans (RAPs) to new Section 11. · Formalizes two existing Congestion Management Plans (CMPs), Transmission Outage Action Plans (TOAPs) and Pre-Contingency Action Plans (PCAPs). · Eliminates the distinction between Type I and Type II SPSs.· Institutes a stakeholder comment process for RAPs that are proposed by Market Participants to provide for input from other Market Participants into ERCOT’s approval process for these Market Participant-proposed RAPs. | 03/06/2013 | ERCOT | No | 2.5.1, 3.7.2, 4.3.1, 4.3.2, 6.2.2, 11 (new section) | Approved |
02/01/2014
|
| NOGRR111 | Synchronization with NPRR527, Required Combined Cycle Telemetry for Operational Awareness and PDCWG Analysis | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guide with NPRR527, Required Combined Cycle Telemetry for Operational Awareness and PDCWG Analysis, requires Combined Cycle Generation Resources to telemeter individual High Sustainable Limits (HSLs) for gas and steam turbines. The HSLs for combustion and steam turbines were previously submitted in zonal and ERCOT requests this practice be resumed in the nodal. | 04/02/2013 | ERCOT | No | 2.2.8 | Approved |
12/01/2013
|
| NOGRR112 | Synchronization with NPRR517, Revisions to the Telemetry Standards and State Estimator Standards Approval Process | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guide with revisions proposed by Nodal Protocol Revision Request (NPRR) 517 which revises the approving body for the Telemetry Standards from TAC to the appropriate TAC Subcommittee (ROS in this case) and revises the requirement for an annual update to an annual review. | 04/02/2013 | ERCOT | No | 7.2.2, 7.3, 7.3.4, 7.3.5, 7.4, 9.1.3, 9.2.2 | Approved |
10/01/2013
|
| NOGRR113 | Synchronization with NPRR536, ERS Time Obligation Certainty | This Nodal Operating Guide Revision Request (NOGRR) synchronizes the Nodal Operating Guide with revisions proposed by NPRR536, ERS Time Obligation Certainty, by clarifying that, upon deployment, Qualified Scheduling Entities (QSEs) shall instruct Emergency Response Service (ERS) Resources to perform at contracted levels consistent with the criteria described in Protocol Section 8.1.3.1.4, Event Performance Criteria for Emergency Response Service Resources, until ERCOT releases the ERS deployment or the ERS Resources have reached their maximum deployment time. | 04/25/2013 | Tim Carter on behalf of DSWG | No | 4.5.3.3 | Approved |
01/01/2014
|
| NOGRR114 | Synchronization with NPRR540, Clarification of Credible Single Contingency | This Nodal Operating Guide Revision Request (NOGRR) revises the use of Credible Single Contingency to align with actual practice and with NPRR540. | 04/25/2013 | Frank Owens on behalf of OWG | No | 2.2.2, 2.7.2, 4.3, 4.3.2, 6.2.2 | Approved |
02/01/2014
|
| NOGRR115 | Update to List of CREZ Circuits and Stations | This NOGRR updates the list of CREZ circuits and stations to align with installed 345kV circuits and stations. Non-substantive revisions are also proposed to Section 7.1. | 04/26/2013 | OWG | No | 7.1, 7.1.2, 7.5 (new) | Approved |
10/01/2013
|
| NOGRR116 | Synchronization with NPRR542, Clarification of the Use of Emergency Condition | This Nodal Operating Guide Revision Request (NOGRR) clarifies the use of Emergency Condition and synchronizes the Nodal Operating Guides with NPRR542. | 04/30/2013 | Operations Working Group (OWG) | No | 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.5.3.1 | Approved |
02/01/2014
|
| NOGRR117 | Administrative Changes for June 1, 2013 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2013. | 05/09/2013 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2013
|
| NOGRR118 | Hydro Responsive Test Reporting | This Nodal Operating Guide Revision Request (NOGRR) revises the requirement for ERCOT to develop a monthly report related to hydro responsive tests to a quarterly report. | 06/03/2013 | ERCOT | No | 9.4.1 | Approved |
10/01/2013
|
| NOGRR119 | Revisions to Load Shed Table | This Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2013. | 06/18/2013 | ERCOT | Yes | 4.5.3.4 | Approved |
07/03/2013
|
| NOGRR120 | Black Start Plan Template Revision | This Nodal Operating Guide Revision Request (NOGRR) provides substantial additional details and clarifications to the Black Start Plan Template. | 07/02/2013 | BSWG | No | 8E, Black Start Plan Template | Approved |
10/04/2013
|
| NOGRR121 | ERCOT Operator Certification Program and ERCOT Fundamentals Manual | This Nodal Operating Guide Revision Request (NOGRR) describes ERCOT’s responsibilities with respect to the ERCOT operator certification program and ERCOT Fundamentals Manual. | 08/09/2013 | ERCOT | No | 1.5.6 | Approved |
04/01/2014
|
| NOGRR122 | CRR Network Model Clarification for Accepted Outages | This Nodal Operating Guide Revision Request (NOGRR) aligns the Operating Guides with current practice by clarifying that "approved" as well as "accepted" Transmission Outages in the Outage Scheduler are utilized in ERCOT’s Congestion Revenue Rights (CRR) Auction at the time of building the CRR Network Model. | 08/16/2013 | ERCOT | No | 5.1 | Approved |
01/01/2014
|
| NOGRR123 | Revisions to Misoperations Reporting Requirements | This Nodal Operating Guide Revision Request (NOGRR) clarifies the reporting requirements for misoperations to ERCOT and Texas Reliability Entity (Texas RE). | 08/29/2013 | OWG | No | 6.2.2, 6.2.3, 8(B) | Approved |
04/01/2014
|
| NOGRR124 | Additional VRT Requirement for IRRs | This Nodal Operating Guide Revision Request (NOGRR) specifies new high Voltage Ride-Through (VRT) requirements for Intermittent Renewable Resources (IRRs) and prohibits IRRs from tripping for events that are less severe than the defined thresholds and occur for shorter time durations. | 08/30/2013 | ERCOT | No | 2.9.1 | Approved |
05/01/2015
|
| NOGRR125 | Minimum Notice for Coordinated Reactive Testing | This Nodal Operating Guide Revision Request (NOGRR) changes the minimum advance notification for a coordinated reactive capability test of a Generation Resource from 48 hours prior, to 1700 the day prior to the day of the test. | 09/27/2013 | Luminant | No | 3.3.2.3 | Approved |
02/01/2014
|
| NOGRR127 | Synchronization with NPRR564, Thirty-Minute Emergency Response Service (ERS) and Other ERS Revisions | This Nodal Operating Guide Revision Request (NOGRR) synchronizes Nodal Operating Guide Section 4.5.3.3, EEA Levels, with Protocol Section 6.5.9.4.2, EEA Levels. | 01/21/2014 | ERCOT | Yes | 4.5.3.3 | Approved |
03/01/2014
|
| NOGRR128 | Administrative Changes for March 1, 2014 Nodal Operating Guides | This Administrative NOGRR updates the ERCOT Load Shed Table to reflect Transmission Operator designation forms submitted by Market Participants. | 02/15/2014 | ERCOT | No | 4.5.3.4 | Approved |
03/01/2014
|
| NOGRR129 | Implement Operational Preparedness for Geomagnetic Disturbances | This Nodal Operating Guide Revision Request (NOGRR) sets up an ERCOT Region coordination process through which ERCOT and Transmission Operators (TOs) will develop Geomagnetic Disturbance (GMD) operating documents and communicates such information. | 03/12/2014 | GMDTF | No | 1.4, 4.7 (new), 4.7.1 (new), 4.7.2 (new), 4.7.3 (new) | Approved |
07/01/2014
|
| NOGRR130 | Alignment with NPRR555 and NPRR434 | This NOGRR aligns the Nodal Operating Guides with the Protocols as revised by NPRR555, which was approved by the ERCOT Board on September 17, 2013 and NPRR434, which was approved by the ERCOT Board on February 12, 2012. | 03/13/2014 | ERCOT | Yes | 2.3, 2.3.1.2, 2.3.2.1, 3.3.1. 3.4 | Approved |
05/01/2014
|
| NOGRR131 | Clarification for Generation Resources During an EEA | This Nodal Operating Guide Revision Request (NOGRR) clarifies language that when ERCOT is in an Energy Emergency Alert (EEA), Qualified Scheduling Entities (QSEs) must receive authorization from ERCOT prior to manually removing an On-Line Resource. | 04/30/2014 | ERCOT | No | 4.5.3.2 | Approved |
08/01/2014
|
| NOGRR132 | Automatic Under-Voltage and Under-Frequency Load Shedding Protection Systems --Load Restoration | Adds a requirement for Under-Frequency Load Shedding (UFLS) and Under-Voltage Load Shedding (UVLS) systems Load restoration coordination consistent with that of manually shed Load for EEA 3 or a Constraint Management Plan. | 05/13/2014 | ERCOT | No | 2.6.1, 6.2.6.3.6 | Approved |
03/01/2015
|
| NOGRR133 | Administrative Changes for the June 1, 2014 Nodal Operating Guides | This Administrative NOGRR aligns the Nodal Operating Guides with the Protocols as revised by Nodal Protocol Revision Request (NPRR) 584, Alignment with TAC procedures to Shorten the Appeals Timeline, which was approved by the ERCOT Board on 4/8/14. This NOGRR shortens the appeals timelines for appealing Operations Working Group (OWG) and ROS actions to align with the Electric Reliability Council of Texas Technical Advisory Committee Procedures and maintains accurate information as allowed by Section 1.3.1, Introduction. | 05/14/2014 | ERCOT | No | 1.3.4.12 | Approved |
06/01/2014
|
| NOGRR134 | Posting Process for Black Start Plans | This Nodal Operating Guide Revision Request (NOGRR) clarifies the responsibility of ERCOT to post the ERCOT Black Start plan on the Market Information System (MIS) Certified Area for Transmission Operators (TOs), and post TOs’ new or revised Black Start plans on the MIS Certified Area for specified Market Participants. | 05/22/2014 | ERCOT | No | 4.6 | Approved |
09/01/2014
|
| NOGRR135 | Constraint Management During Energy Emergency Alert | This Nodal Operating Guide Revision Request (NOGRR) seeks to improve management of congestion during an Energy Emergency Alert (EEA) by proposing: 1. Language that provides a mechanism for ERCOT Operations to manage constraints in EEA 2 or 3 to higher Facility ratings when applicable for those constraints identified as limiting generation output; and 2. Language that reconsiders use of double-circuit contingencies during emergency operations based on Grid conditions | 07/23/2014 | ERCOT | No | 4.2.3, 4.5.2, 4.5.3, 4.5.3.1 | Approved |
05/01/2015
|
| NOGRR136 | Verifying QSE Capability to Operate in CFC | This Nodal Operating Guide Revision Request (NOGRR) establishes a process for ERCOT to conduct Constant Frequency Control (CFC) tests to ensure that Qualified Scheduling Entities (QSEs) can provide this service if ERCOT loses its ability to control system frequency; and removes the CFC definition from the Nodal Operating Guide due to the definition being incorporated into the Protocols via associated NPRR646. | 07/30/2014 | ERCOT | No | 1.4, 2.2.4.3 | Approved |
03/01/2015
|
| NOGRR137 | Rescind NOGRR034 and Maintain Current Telemetry Performance Reporting Practices | This Nodal Operating Guide Revision Request (NOGRR) rescinds the grey-boxed language introduced by NOGRR034, Rescind Telemetry Performance Calculation Exclusions, to maintain current telemetry performance reporting practices. ERCOT and Market Participants are satisfied with current telemetry reporting requirements as reflected in the discussion at the July 2014 PRS meeting, and recognize that there would be substantial costs associated with the implementation of the currently grey-boxed language introduced by NOGRR034. | 08/25/2014 | ERCOT | No | 7.3.3 | Approved |
12/01/2014
|
| NOGRR138 | Delete Grey Box for Reporting of Back-up Control Plan Submittal | This Nodal Operating Guide Revision Request (NOGRR) proposes the discontinuation of the posting requirement for Discontinue Backup Control Plan Submittal Results, ERCOT Market Information List (EMIL) ID, NP8-510M and Backup Control Plan Test Dates and Results Summary Reports, EMIL ID NP8-922-M. This NOGRR is part of a series of revision requests submitted by the Market Information System User Group (MISUG) in support of the TAC June 2013 recommendation that all manually developed ERCOT market reports be reviewed for market interest and the amount of labor involved to produce the reports. This NOGRR is the result of a collaborative effort between the MISUG and ERCOT to review the reports that are manually produced by ERCOT. | 09/24/2014 | MIS User Group | No | 9.3.6 | Approved |
09/25/2015
|
| NOGRR139 | Under/Over-Frequency Relaying Requirements | Adds over-frequency relaying requirements and clarifies under-frequency and over-frequency relay set-points so that Generation Resources know what is expected. Over-frequency relay set points criteria was approved by NERC in March 2014 under Standard PRC-024, Generator Frequency and Voltage Protective Relay Settings. | 09/30/2014 | ERCOT | No | 2.6, 2.6.2 | Approved |
04/01/2015
|
| NOGRR140 | Posting of the ERCOT Geomagnetic Disturbance Operating Plan | Proposes ERCOT post its GMD to the MIS Certified Area for TOs, rather than the MIS Public Area. | 11/04/2014 | CenterPoint Energy | Yes | 4.7.3 | Approved |
04/01/2015
|
| NOGRR141 | Administrative Changes for December 1, 2014 Nodal Operating Guides | Updates the ERCOT Load Shed Table to reflect Transmission Operator (TO) designation forms submitted by Market Participants. | 11/10/2014 | ERCOT | No | 4.5.3.4 | Approved |
12/01/2014
|
| NOGRR142 | Phasor Measurement | This Nodal Operating Guide Revision Request (NOGRR) represents the consensus recommendation of the Phasor Measurement Task Force (PMTF) as the binding language required to meet the top three synchrophasor use cases identified by ERCOT staff and the PMTF as having merit in the ERCOT region. | 12/17/2014 | PMTF | No | 6.1.3, 6.1.3.1, 6.1.3.2, 6.1.3.3, 6.1.3.4 | Approved |
06/01/2015
|
| NOGRR143 | Alignment of Nodal Operating Guides with NERC Reliability Standard, BAL-001-TRE-1 | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standard, BAL-001-TRE-1. | 04/06/2015 | PDCWG | No | 2.2.7, 2.2.8, 8 Attachment C | Approved |
10/01/2016
Sections 2.2.7, 2.2.8, and Section 8 Attachment J 11/03/2016
Section 8 Attachment C |
| NOGRR144 | Incorporation of “Manual Deployment and Recall of Responsive Reserve Service during Scarcity Conditions” into the Nodal Operating Guides | This Nodal Operating Guide Revision Request (NOGRR) incorporates the Other Binding Document (OBD) “Manual Deployment and Recall of Responsive Reserve Service during Scarcity Conditions” into the Nodal Operating Guides. | 04/24/2015 | ERCOT | No | 4.8 (new), 4.8.1 (new), and 4.8.2 (new) | Approved |
08/01/2015
|
| NOGRR145 | Alignment with NPRR705, Provides Consistency for References to the End Date of the Generation Interconnection Process | In the Resource Interconnection Handbook, the term “commercial operations” has a different meaning to Resource Entities and financial institutions involved in construction and financing of Generation Resources than it does in the context of performance testing by ERCOT for new Generation Resources. This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with NPRR705 by replacing various terms used to refer to the date on which Generation Resources complete the Resource interconnection process with the proposed defined terms “Commercial Operations Date” and “Resource Commissioning Date” to provide consistency for references to the end of the generation interconnection process. | 05/20/2015 | ERCOT | No | 2.2.6 | Approved |
01/01/2016
|
| NOGRR146 | Clarifying ERCOT Actions During Energy Emergency Alerts | This Nodal Operating Guide Revision Request (NOGRR) revises the Energy Emergency steps to include concepts discussed during the 4/2/15 Energy Emergency Alerts (EEA) Workshop which will improve the management of EEA. Specifically, this NOGRR aligns the Nodal Operating Guide with changes proposed in Nodal Protocol Revision Request (708), Clarifying ERCOT Actions during Energy Emergency Alerts, with the Nodal Operating Guides. | 05/26/2015 | ERCOT | No | 4.5.3.3 | Approved |
01/01/2016
|
| NOGRR147 | Reactive Power Testing Requirements | This Nodal Operating Guide Revision Request (NOGRR) revises the language in Section 3.3.2.1, Corrected Unit Reactive Limits (CURL), to harmonize the ERCOT reactive testing requirements with the recently approved North American Electric Reliability Corporation (NERC) Reliability Standards. | 06/29/2015 | Luminant | No | 3.3.2.1, 3.3.2.2, 3.3.2.3, 3.5 | Approved |
12/09/2016
|
| NOGRR148 | Administrative Changes for August 1, 2015 Nodal Operating Guides | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table to reflect Transmission Operator designation forms submitted by Market Participants and to reflect the 2014 peak Load percentages. | 07/08/2015 | ERCOT | No | 4.5.3.4 | Approved |
08/01/2015
|
| NOGRR150 | Alignment with NPRR747, Revision of Voltage Control Requirements | This Nodal Operating Guide Revision Request (NOGRR) relocates language concerning voltage support obligations that currently resides in an ERCOT procedure document but that should be moved to the Operating Guide so that the requirements are recognized as binding. Based in part on discussions at the April 8, 2015 Voltage Workshop, this NOGRR also allocates each of various voltage support responsibilities to the appropriate Entity. Additionally, this NOGRR clarifies that the ERCOT Transmission Operator (TO) has the authority to instruct a Qualified Scheduling Entity (QSE) to modify its Generation Resource’s Voltage Set Point. Additional edits are intended to better synchronize language with the North American Electric Reliability Corporation (NERC) Reliability Standards. | 11/25/2015 | ERCOT | No | 2.2.5, 2.2.10, 2.7, 2.7.1, 2.7.3, 2.7.3 (new), 2.7.3.1 (new), 2.7.3.2 (new), 2.7.3.3 (new), 2.7.3.4 (new), 2.7.3.5 (new), 2.7.4, 2.7.4.1, 2.7.4.2, 2.7.4.3, 3.7, 9.1.9, 9.3.1, 9.3.9 | Approved |
01/01/2017
|
| NOGRR151 | Alignment with NPRR748, Revisions associated with COM-002-4 and Other Clarifications Associated with Dispatch Instructions | This Nodal Operating Guide Revision Request (NOGRR) aligns the Operating Guides with changes made in NPRR748 and also provides consistency, transparency, and clarification related to communication protocol in the ERCOT Region. | 11/25/2015 | ERCOT | No | 3, 3.1.3 (new) | Approved |
05/01/2016
|
| NOGRR153 | Maintenance of Duplicate EEA Language via Alignment NOGRR Process | This Nodal Operating Guide Revision Request (NOGRR) creates a new process for maintaining alignment of the Energy Emergency Alert (EEA) language between the Protocols and Nodal Operating Guides via “Alignment NOGRRs”. This NOGRR is in response to the 5/28/15 Technical Advisory Committee (TAC) decision that EEA language be maintained in both the Protocols and Nodal Operating Guides; and that a process be developed to ensure consistency. | 01/27/2016 | ERCOT | No | 1.3.1 and 1.3.6 | Approved |
05/01/2016
|
| NOGRR154 | Alignment with NPRR755 and Requirements for ERCOT WAN Installation and Exchange of Resource-Specific XML Data | This Nodal Operating Guide Revision Request (NOGRR) clarifies the installation requirements for the ERCOT Wide Area Network (WAN), allows a Qualified Scheduling Entity (QSE) to designate an agent for purposes of connecting to the ERCOT WAN, and requires ERCOT and Market Participants to use the ERCOT WAN to exchange Resource-Specific Extensible Markup Language (XML) Data. | 01/27/2016 | ERCOT | No | 1.4, 7.1, 7.1.1, 7.1.2, 7.1.3, 7.3.1, 7.3.2, and 7.3.3 | Approved |
06/15/2019
|
| NOGRR155 | Voltage Ride-Through Requirements Clarification | This Nodal Operating Guide Revision Request (NOGRR) clarifies Voltage Ride-Through (VRT) performance requirements for all Generation Resources immediately following a fault. This NOGRR stipulates that, in addition to remaining On-Line and connected to the transmission system following a fault, Generation Resources must also maintain real power. | 03/09/2016 | ERCOT | No | 2.9 | Approved |
08/01/2016
|
| NOGRR156 | Alignment with NPRR762, Removal of Language Related to Responsive Reserve Provided by DC Ties | This Nodal Operating Guide Revision Request (NOGRR) removes references to the provision of Responsive Reserve (RRS) across the Direct Current Ties (DC Ties). These references have existed in the Operating Guides since at least 1997, and similar language existed in the earliest versions of the Zonal Protocols. However, to date, there are no ERCOT systems or procedures in place to award Ancillary Services to the DC Ties, and no project to add this functionality has ever been proposed. Without any funding for the necessary system changes, ERCOT has no mechanism for allowing the provision of RRS over the DC Ties. | 03/18/2016 | ERCOT | No | 2.3.1.2 | Approved |
07/01/2016
|
| NOGRR158 | Alignment with Protocol Limits on RRS Provided by Hydro Resources | This Nodal Operating Guide Revision Request (NOGRR) aligns language in the Operating Guide relating to limits on Responsive Reserve (RRS) provided by hydro Resources with the limits introduced by Nodal Protocol Revision Request (NPRR) 669, Maintaining Frequency Responsiveness from Generation Resources Providing RRS. | 05/25/2016 | ERCOT | No | 2.3.1.2 | Approved |
09/01/2016
|
| NOGRR159 | Alignment with NPRR779, Clarifies References to Texas Reliability Entity and Independent Market Monitor | This Nodal Operating Guide Revision Request (NOGRR) clarifies references to the Texas Reliability Entity (Texas RE) and the Independent Market Monitor (IMM). The Nodal Operating Guide currently refers to the Texas RE in both its capacity as the North American Electric Reliability Corporation (NERC) Regional Entity and the Public Utility Commission of Texas (PUCT) Reliability Monitor, a new term recently added to P.U.C. SUBST. R. § 25.503, Oversight of Wholesale Market Participants. This NOGRR modifies uses of the term “Texas Reliability Entity” to more accurately reflect distinct references to the NERC Regional Entity and the PUCT Reliability Monitor, and clarifies that the IMM is an included party in several provisions related to the ERCOT stakeholder process. | 05/27/2016 | ERCOT | No | 1.3.1, 1.3.2, 1.3.3, 1.3.4.3, 1.3.4.4, 1.3.4.12, 1.5.4, 2.7.4.1, 6.2.3, Section 8, Attachment A, 9.1.8, 9.3.1, 11.2.1 | Approved |
11/01/2016
|
| NOGRR160 | Administrative Changes for July 1, 2016 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2016. Administrative changes to the Load Shed Table are allowed under Section 1.3.1, Introduction. | 06/15/2016 | ERCOT | No | 4.5.3.4 | Approved |
07/01/2016
|
| NOGRR161 | Administrative Changes for July 1, 2016 Nodal Operating Guide – Section 21 Alignment | This Administrative Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with the changes in NPRR752, which modifies the revision request process to reflect current ERCOT practices, and which was approved by the ERCOT Board on June 14, 2016. Administrative changes to align the Nodal Operating Guide with Protocol Section 21, Revision Request Process, are allowed under Section 1.3.1, Introduction. | 06/16/2016 | ERCOT | No | 1.3.4.1, 1.3.4.3, 1.3.4.4, 1.3.4.5, 1.3.4.6, 1.3.4.7, 1.3.4.8, 1.3.4.10, 1.3.4.11, 1.3.5, 1.3.6 | Approved |
07/01/2016
|
| NOGRR162 | Process for Resolving Real-Time Data Discrepancies | This Nodal Operating Guide Revision Request (NOGRR) establishes a process for resolving Real-Time data discrepancies that affect ERCOT’s Network Security Analysis (NSA). | 07/06/2016 | ERCOT | No | 7.3.3, 7.3.4 (new), 7.3.4 (delete), 7.3.5 (delete) | Approved |
01/01/2017
|
| NOGRR163 | Administrative Changes for August 1, 2016 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2016. Administrative changes to the Load Shed Table are allowed under Section 1.3.1, Introduction. | 07/15/2016 | ERCOT | No | 4.5.3.4 | Approved |
08/01/2016
|
| NOGRR164 | Alignment with NPRR792, Removing Special Protection System (SPS) and adding Remedial Action Scheme (RAS) | This Nodal Operating Guide Revision Request (NOGRR) aligns the Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standard definition for Special Protection System (SPS) and for consistency uses Remedial Action Scheme (RAS) and Automatic Mitigation Plan (AMP) where applicable in place of SPS. This NOGRR also adds a RAS template to simplify submitting new and modified RASs. | 07/27/2016 | ERCOT | Yes | 2.2.7, 2.9.1, 3.2.3, 4.3.1, 6.2.3, 11, 11.1, 11.2, 11.2.1, 11.3, 11.3 (new), 11.4, 11.4, 11.6, Section 8 Attachment K (new) | Approved |
04/01/2017
|
| NOGRR165 | Emergency Operations Plans as Required by NERC Reliability Standards | This Nodal Operating Guide Revision Request (NOGRR) aligns the Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standards to ensure ERCOT, along with each Transmission Operator (TO), develops emergency operations plan(s) to mitigate operating emergencies. The emergency operations plan is intended to address NERC Reliability Standard EOP-011, Emergency Operations Planning, requirements and does not require Black Start or Geomagnetic Disturbance (GMD) plans to be included, as those requirements are addressed elsewhere in the Nodal Operating Guides. | 10/12/2016 | ERCOT | No | 3.7, Section 8 Attachment L (new) | Approved |
02/01/2017
|
| NOGRR166 | Removal of the Daily Grid Operations Summary Reports | This Nodal Operating Guide Revision Request (NOGRR) removes the requirement of NOGRR084, Daily Grid Operations Summary Report. | 10/14/2016 | ERCOT | No | 10.2 (delete) | Approved |
04/01/2017
|
| NOGRR167 | Alignment with NPRR776, Voltage Set Point Communication | This Nodal Operating Guide Revision Request (NOGRR) revises the Nodal Operating Guide to be consistent with NPRR776 which aligns the Protocols with currently used verbal communication practices between Transmission Service Providers (TSPs), Qualified Scheduling Entities (QSEs), and Generation Resources. This NOGRR addresses issues raised at the April 8, 2015 Voltage Workshop and during the review of NOGRR150, Alignment with NPRR747, Revision of Voltage Control Requirements. | 10/31/2016 | ERCOT | No | 2.2.10, 2.7.1, 2.7.3.2, 2.7.3.3, 2.7.3.4, 2.7.3.5, and 3.7 | Approved |
06/01/2018
|
| NOGRR168 | Nodal Operating Guide Revision Request Process | This Nodal Operating Guide Revision Request (NOGRR) refines the process for revising the Nodal Operating Guide so that NOGRRs are originally considered at the voting Subcommittee level and expands the list of NOGRRs requiring ERCOT Board approval. These process changes were discussed at the 8/25/16 TAC/TAC Subcommittee Structural and Procedural Review, the 9/29/16 TAC meeting, and the 10/10/16 HR & Governance Committee meeting. | 01/30/2017 | ERCOT | No | 1.3.1, 1.3.3, 1.3.4, 1.3.4.1, 1.3.4.2, 1.3.4.3, 1.3.4.4, 1.3.4.5, 1.3.4.6, 1.3.4.7, 1.3.4.8, 1.3.4.9, 1.3.4.10, 1.3.4.11, 1.3.4.12, 1.3.5, and 1.3.6 | Approved |
06/01/2017
|
| NOGRR169 | Disturbance Monitoring Requirements Update to Align with NERC Reliability Standard PRC-002-2 | This Nodal Operating Guide Revision Request (NOGRR) aligns language in Section 6.1, Disturbance Monitoring Requirements, with North American Electric Reliability Corporation (NERC) Reliability Standard PRC-002-2, Define Regional Disturbance Monitoring and Reporting Requirements. | 03/16/2017 | SPWG | No | 6.1.1, 6.1.2, 6.1.2.1, 6.1.2.2, 6.1.2.3, 6.1.2.4, 6.1.2.5 (delete), 6.1.3, 6.1.3.1, 6.1.3.2, 6.1.3.3, 6.1.3.4, 6.1.4 (new), 6.1.4, 6.1.5, and 8M (new) | Approved |
02/01/2018
|
| NOGRR170 | Alignment with NPRR824, Alignment of EEA Level 3 with NERC Reliability Standards EOP-011-1 and BAL-001-2 | This Nodal Operating Guide Revision Request (NOGRR) revises the Nodal Operating Guide (NOG) to be consistent with NPRR824 language relating to North American Reliability Corporation (NERC) Reliability Standards EOP-011-1, Emergency Operations, and BAL-001-2, Real Power Balancing Control Performance. Pursuant to paragraph (5) of Section 1.3.1, Introduction, this NOGRR does not modify Section 4.5.3.3, EEA Levels. An Alignment NOGRR will be posted upon ERCOT Board approval of NPRR824 to maintain alignment of Protocol Section 6.5.9.4.2, EEA Levels, with NOG Section 4.5.3.3. | 03/29/2017 | ERCOT | No | 4.5.3 and 4.5.3.1 | Approved |
07/01/2017
|
| NOGRR171 | Administrative Changes for June 1, 2017 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2017. Administrative changes to the Load Shed Table are allowed under Section 1.3.1, Introduction. | 05/11/2017 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2017
|
| NOGRR172 | Alignment Changes for July 1, 2017 Nodal Operating Guide – NPRR824 | This Nodal Operating Guide Revision Request (NOGRR) duplicates Energy Emergency Alert (EEA) language between Section 4.5.3.3 and Protocol Section 6.5.9.4.2, EEA Levels. Alignment changes to Section 4.5.3.3 are allowed under paragraph (6) of Section 1.3.1, Introduction. | 06/14/2017 | ERCOT | No | 4.5.3.3 | Approved |
07/01/2017
|
| NOGRR173 | Monthly RRS Reporting Clean Up | This Nodal Operating Guide Revision Request (NOGRR) removes grey-boxed language in order to align with the passage of NOGRR166, Removal of the Daily Grid Operations Summary Reports. NOGRR166 removed the language added with NOGRR084, Daily Grid Operations Summary Report. This NOGRR cleans up removal of other NOGRR084 and NOGRR166-related items. This NOGRR does not remove any current reporting requirements in Section 9.4.3, Resource-Specific Responsive Reserve Performance as it is duplicative language to the current black-lined language. | 06/23/2017 | ERCOT | No | 9.4.3 | Approved |
10/01/2017
|
| NOGRR174 | AVR and PSS Testing Requirements | This Nodal Operating Guide Revision Request (NOGRR) harmonizes the ERCOT Automatic Voltage Regulator (AVR) and Power System Stabilizer (PSS) testing requirements with the recently approved North American Electric Reliability Corporation (NERC) Standard MOD-026-1, Verification of Models and Data for Generator Excitation Control System or Plant Volt/Var Control Functions. | 12/27/2017 | Luminant Generation | No | 2.2.5, 2.2.6 | Approved |
06/01/2019
All remaining language 09/01/2018
All language except paragraphs (2)(a), (4), and (5) of Section 2.2.5; and paragraph (7)(a) of Section 2.2.6 |
| NOGRR175 | Administrative Changes for February 1, 2018 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table to reflect changes in obligations based on Public Utility Commission of Texas (PUCT) Docket No. 47469, Joint Report and Application of Sharyland Utilities LP, Sharyland Distribution and Transmission Services LLC, and Oncor Electric Delivery Company LLC for Transfer of Facilities, Transfer of Rights Under and Amendment of Certificates of Convenience and Necessity, and for Other Regulatory Approvals, whereby Oncor Electric Delivery is assuming responsibility for the Load shed obligations previously assigned to Sharyland Utilities. Administrative changes to the Load Shed Table are allowed under Section 1.3.1, Introduction. | 01/04/2018 | ERCOT | No | 4.5.3.4 | Approved |
02/01/2018
|
| NOGRR176 | Hotline Call Participation | This Nodal Operating Guide Revision Request (NOGRR) clarifies which Entities participate in hotline calls. | 01/17/2018 | ERCOT | No | 2.2.9.1, 4.2.1, 4.2.2, 4.2.3, and 4.2.4 | Approved |
06/01/2018
|
| NOGRR177 | Related to NPRR857, Creation of Direct Current Tie Operator Market Participant Role | This Nodal Operating Guide Revision Request (NOGRR) revises the Nodal Operating Guide (NOG) to be consistent with NPRR857 language relating to Directive 1 of Public Utility Commission of Texas (PUCT) Docket No. 46304-3, Oversight Proceeding Regarding ERCOT Matters arising out of Docket No. 45624 (Application of the City of Garland to Amend A Certificate of Convenience and Necessity for the Rusk to Panola Double-Circuit 345-KV Transmission Line in Rusk and Panola Counties). | 03/19/2018 | ERCOT | No | 1.4, 1.5.3, 2.1, 2.7.3.3, 2.8, 2.8.1, 3.1.1, 3.1.3, 3.2.3, 3.6, 3.7, 3.7.2, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.5.2, 4.5.3, 4.5.3.2, 4.6.4, 5.1, 6.1.3.2, 6.2.6.2.6, 7.1, 7.1.2, 7.2.2, 7.3, 7.3.2, 7.3.3, 7.3.5, 9.1, 9.2, 9.2.2, 10.1 | Approved | |
| NOGRR178 | Clarification of Automatic Under-Frequency Load Shed Requirement | This Nodal Operating Guide Revision Request (NOGRR) clarifies language relating to automatic Load shedding. | 03/21/2018 | ERCOT | No | 2.6.1 | Approved |
12/01/2018
|
| NOGRR179 | Administrative Changes for June 1, 2018 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2018. | 05/11/2018 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2018
|
| NOGRR180 | Exemption of Governor Dead-Band and Droop Setting Requirements for Steam Turbines of Combined Cycle Generation Resources | This Nodal Operating Guide Revision Request (NOGGR) removes Governor Dead-Band and Governor droop settings requirements for steam turbines of Combined Cycle Generation Resources. | 06/26/2018 | ERCOT | No | 2.2.7 | Approved |
10/01/2018
|
| NOGRR181 | Transmission Operator (TO) Black Start Plan Submittals | This Nodal Operating Guide Revision Request (NOGRR) harmonizes the Transmission Operator (TO) Black Start plan submittals with the North American Electric Reliability Corporation (NERC) Standard EOP-006-2, System Restoration Coordination. Currently there is a timing issue with TO Black Start plans being submitted days and weeks leading up to ERCOT’s annual analysis that begins on November 1. Since ERCOT has to review each TO’s plan within 30 days of receipt, ERCOT is clarifying that receipt is deemed to be on November 1 for the annual effort to study and post the plans collectively within the 30 days. | 06/27/2018 | ERCOT | No | 4.6.4 | Approved |
10/01/2018
|
| NOGRR182 | Transmission Operator (TO) Emergency Operations Plan Submittals | This Nodal Operating Guide Revision Request (NOGRR) harmonizes the Transmission Operator (TO) emergency operations plan submittals with the North American Electric Reliability Corporation (NERC) Reliability Standard EOP-011-1, Emergency Operations. Currently there is a timing issue with TO emergency operations plans being submitted days and weeks leading up to ERCOT’s annual review, which begins on February 15. Since ERCOT has to review each TO’s plan within 30 days of receipt, ERCOT is clarifying that receipt is deemed to be on February 15 for the annual effort to review the plans collectively within the 30 days. | 09/10/2018 | ERCOT | No | 3.7 | Approved |
12/01/2018
|
| NOGRR183 | Remedial Action Scheme (RAS) Submittal and Review Requirements | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standard PRC-012-2 - Remedial Action Schemes. | 10/24/2018 | ERCOT | No | 6.2.3, 8 Attachment K, 11.2, and 11.2.1 | Approved |
10/01/2020
|
| NOGRR185 | Related to NPRR921, RTF-2 Elimination of the Terms All-Inclusive Generation Resource and All-Inclusive Resource | This Nodal Operating Guide Revision Request (NOGRR) uses the terms created in NPRR889, RTF-1 Replace Non-Modeled Generator with Settlement Only Generator, to replace the terms All-Inclusive Generation Resource and All-Inclusive Resource in the Nodal Operating Guide. | 01/28/2019 | ERCOT | No | 2.2.7, 2.2.8, and 8J | Approved |
11/01/2019
|
| NOGRR186 | Alignment Changes for March 1, 2019 Nodal Operating Guide – NPRR863 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Protocol Section 6.5.9.4.2, EEA Levels, with the related Operating Guide Section 4.5.3.3. On February 12, 2019, the ERCOT Board approved NPRR863, Creation of ERCOT Contingency Reserve Service and Revisions to Responsive Reserve, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Operating Guide Section 1.3.1 provides that ERCOT can make changes to the Operating Guides to maintain duplicate language between the Protocols and Operating Guides. | 02/19/2019 | ERCOT | No | 4.5.3.3 | Approved |
03/01/2019
|
| NOGRR187 | Related to NPRR863, Creation of ERCOT Contingency Reserve Service and Revisions to Responsive Reserve | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with revisions to Ancillary Services proposed by NPRR863. | 03/06/2019 | STEC | No | 1.4, 2.2.4, 2.2.4.1, 2.2.4.2, 2.3, 2.3.1.2, 2.3.1.2.1 (new), 2.3.3 (new), 2.3.3.1 (new), 3.4, 4.5.2, 4.8, 4.8.1, 8F, 8G, and 9.4.6 (new) | Approved |
03/01/2020
Phase 1 |
| NOGRR188 | WAN Technology Updates | This Nodal Operating Guide Revision Request (NOGRR) aligns Nodal Operating Guide language with ERCOT’s Wide Area Network (WAN) refresh project to convert from Time Division Multiplexing (TDM) to another technology, allowing implementation of Voice over Internet Protocol (VoIP). | 03/19/2019 | ERCOT | No | 7.1, 7.1.1, 7.1.2, and 7.1.3 | Approved |
06/01/2019
|
| NOGRR189 | Align Disturbance Monitoring Requirements Deadline with NERC Reliability Standard PRC-002-2 | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guides with North American Electric Reliability Corporation (NERC) Reliability Standard PRC-002-2 – Disturbance Monitoring and Reporting Requirements. | 03/20/2019 | System Protection Working Group | No | 6.1.2.2, 6.1.3.2 | Approved |
06/01/2019
|
| NOGRR191 | Related to NPRR939, Modification to Load Resources Providing RRS to Maintain Minimum PRC on Generators During Scarcity Conditions | This Nodal Operating Guides Revision Request (NOGRR), along with NPRR939, allows ERCOT to manually deploy Load Resources other than Controllable Load Resources providing Responsive Reserve (RRS) to maintain a minimum 500 MWs of Physical Responsive Capability (PRC) reserves on Generation Resources to continuously balance the Demand with supply while maintaining the stable grid frequency for smaller disturbances. | 04/30/2019 | ERCOT | No | 4.8.1 | Approved | |
| NOGRR192 | Administrative Changes for June 1, 2019 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2019. | 05/10/2019 | ERCOT | No | 4.5.3.4, Load Shed Obligation | Approved |
06/01/2019
|
| NOGRR193 | Administrative Changes for July 1, 2019 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the 2019 ERCOT Load Shed Table to reflect the inclusion of the City of Brady as a new Transmission Operator (TO) responsible for shedding Load in the ERCOT Region. | 06/14/2019 | ERCOT | No | 4.5.3.4 | Approved |
07/01/2019
|
| NOGRR194 | Relocate Black Start Training Attendance Requirements to Nodal Operating Guides | This Nodal Operating Guide Revision Request (NOGRR) clarifies Black Start training attendance requirements originally located in Nodal Protocol Section 3.14.2, Black Start, and relocates them to the Nodal Operating Guides. | 07/24/2019 | ERCOT | No | 1.5.2, 1.5.3, 4.6.4 | Approved |
11/01/2019
|
| NOGRR195 | Generator Voltage Control Tolerance Band | This Nodal Operating Guide Revision Request (NOGRR) addresses ERCOT audit recommendations from Texas Reliability Entity, Inc. (Texas RE) and proposes to modify generator voltage control tolerance bands. | 08/20/2019 | ERCOT | No | 2.2.10, 2.7.3.1, 2.7.3.3, 2.7.3.4, 2.7.3.5 | Approved |
02/05/2021
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| NOGRR196 | Related to NPRR973, Add Definitions for Generator Step-Up and Main Power Transformer | This Nodal Operating Guide Revision Request (NOGRR) clarifies language by use of defined terms Generation Step-Up (GSU) and Main Power Transformer (MPT). | 09/25/2019 | ERCOT | No | 2.9, 3.3, and 3.3.2.1 | Approved | |
| NOGRR197 | Align Responsive Reserve (RRS) Manual Deployment Requirements with Current Practice | This Nodal Operating Guide Revision Request (NOGRR) updates Section 4.8.1, Responsive Reserve Service Manual Deployment, to provide flexibility in the amount of RRS capacity that is released to SCED during scarcity conditions. | 10/01/2019 | ERCOT | Yes | 4.8.1 | Approved |
10/24/2019
|
| NOGRR198 | Alignment Changes for November 1, 2019 Nodal Operating Guide – NPRR939 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Protocol Section 6.5.9.4.2, EEA Levels, with the related Operating Guide Section 4.5.3.3. On October 8, 2019, the ERCOT Board approved NPRR939, Modification to Load Resources Providing RRS to Maintain Minimum PRC on Generators During Scarcity Conditions, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Nodal Operating Guide Section 1.3.1 provides that ERCOT can make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide. | 10/11/2019 | ERCOT | No | 4.5.3.3 | Approved |
11/01/2019
|
| NOGRR199 | Related to NPRR979, Incorporate State Estimator Standards and Telemetry Standards into Protocols | This Nodal Operating Guide Revision Request (NOGRR) realigns references to State Estimator and relevant telemetry standards to accommodate the move of the State Estimator and Telemetry Standard Other Binding Documents (OBDs) to the Protocols. | 10/29/2019 | ERCOT | No | 3.7, 7.2.2, 7.3, 7.3.5, 7.3.6, 7.4, 9.1.3, 9.2.2, and 9.3.1 | Approved |
07/01/2021
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| NOGRR200 | Delete Remaining Grey-Boxed Language Associated with NOGRR025, Monitoring Programs for QSEs, TSPs, and ERCOT | This Nodal Operating Guide Revision Request (NOGRR) deletes all remaining grey-boxed language associated with NOGRR025. | 11/20/2019 | ERCOT | No | 9.1.1 (delete), 9.1.2 (delete), 9.1.3, 9.1.5 (delete), 9.1.7 (delete), 9.1.8 (delete), 9.1.9 (delete), 9.1.10, 9.2.2, 9.2.4 (delete), 9.2.5 (delete), 9.3.1, 9.3.2, 9.3.3 (delete), 9.3.4 (delete), 9.3.5 (delete), 9.3.7 (delete), 9.3.8, 9.3.9 (delete), 9.4.2 (delete), and 9.4.4 (delete) | Approved |
09/01/2020
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| NOGRR201 | Administrative Changes for January 1, 2020 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2020. This administrative NOGRR is necessary to account for changes in Transmission Operator (TO) designations and updating of other Load calculations. | 12/10/2019 | ERCOT | No | 4.5.3.4 | Approved |
01/01/2020
|
| NOGRR202 | Align Nodal Operating Guide with the Posting Timeline in Other Binding Document Procedure for Calculating Responsive Reserve (RRS) Limits for Individual Resources | This Nodal Operating Guide Revision Request (NOGRR) removes language regarding the posting timeline for MW limits for Resources providing Responsive Reserve (RRS) from the Nodal Operating Guide, as this requirement is now outlined in the Other Binding Document (“OBD”) Procedure for Calculating Responsive Reserve (RRS) Limits for Individual Resources. | 12/13/2019 | STEC | No | 2.3.1.2.1 | Approved |
07/01/2020
|
| NOGRR203 | Alignment Changes for January 1, 2020 Nodal Operating Guide – NPRR937 and NPRR968 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Protocol Section 6.5.9.4.2, EEA Levels, with the related Operating Guide Section 4.5.3.3. On December 10, 2019, the ERCOT Board approved NPRR937 and NPRR968, both of which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Nodal Operating Guide Section 1.3.1, Introduction, provides that ERCOT can make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide. | 12/13/2019 | ERCOT | No | 4.5.3.3 | Approved |
01/01/2020
|
| NOGRR204 | Related to NPRR989, BESTF-1 Energy Storage Resource Technical Requirements | This Nodal Operating Guide Revision Request (NOGRR) establishes technical requirements for Energy Storage Resources (ESRs) in the following areas: Reactive Power capability, including performance requirements during transient voltage disturbances, and testing criteria; voltage ride-through requirements; frequency ride-through requirements; and Governor Dead-Band and droop setting requirements. | 12/16/2019 | ERCOT | Yes | 2.2.5, 2.2.7, 2.2.8, 2.2.10, 2.3, 2.6.2, 2.7, 2.7.1, 2.7.2, 2.7.3.2, 2.7.3.3, 2.7.3.4, 2.7.3.5, 2.9, 2.9.1, 3.3.2.1, 3.3.2.2, 6.2.6.3.4, 8C, and 8J | Approved | |
| NOGRR205 | Clarification to Grey-boxed Language in Section 4.8.1 | This Nodal Operating Guide Revision Request (NOGRR) clarifies grey-boxed language in Section 4.8.1 in order to maintain consistency with revisions adopted via NOGRR197, Align Responsive Reserve (RRS) Manual Deployment Requirements with Current Practice, following the November 1, 2019 incorporation of NOGRR191, Related to NPRR939, Modification to Load Resources Providing RRS to Maintain Minimum PRC on Generators During Scarcity Conditions, into the Nodal Operating Guide. This NOGRR also corrects an error in ERCOT’s administrative comments to NOGRR191 filed on September 26, 2019, which inadvertently changed the language. | 01/08/2020 | ERCOT | No | 4.8.1 | Approved |
07/01/2020
|
| NOGRR206 | Administrative Changes for February 1, 2020 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2020. This NOGRR is submitted to meet ERCOT’s annual review of the Energy Emergency Alert (EEA) Level 3 Load shedding percentages as required by Section 4.5.3, Implementation. This Administrative NOGRR also accounts for the recent integration of a portion of the Rayburn County Electric Cooperative, Inc. transmission system from the Southwest Power Pool into the ERCOT Region. | 01/15/2020 | ERCOT | No | 4.5.3.4 | Approved |
02/01/2020
|
| NOGRR207 | Related to NPRR1001, Clarification of Definitions of Operating Condition Notice, Advisory, Watch, Emergency Notice, and Related Clarifications | This Nodal Operating Guide Revision Request (NOGRR) clarifies that the issuance of an Operating Condition Notice (OCN), Advisory, or Watch does not mean that ERCOT is operating in an Emergency Condition, and it makes a few minor associated clarifications. | 02/24/2020 | ERCOT | No | 2.2.2, 4.1, 4.2.2, 4.2.3, 4.3 | Approved |
01/01/2021
|
| NOGRR208 | Related to NPRR1002, BESTF-5 Energy Storage Resource Single Model Registration and Charging Restrictions in Emergency Conditions | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with the Nodal Protocols as modified by NPRR1002, except Section 4.5.3.3, EEA Levels, which an Alignment NOGRR will be filed following approval of NPRR1002 to align with the Protocols. | 02/25/2020 | ERCOT | No | 3.3 | Approved |
09/27/2024
|
| NOGRR209 | Related to NPRR1003, Elimination of References to Resource Asset Registration Form | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with changes proposed in NPRR1003, by replacing all remaining references to the Resource Asset Registration Form (“RARF”) with more general language in anticipation of the elimination of the RARF. | 02/26/2020 | ERCOT | No | 2.2.5, 2.2.6, 3.3.2.1, 3.5 | Approved |
09/01/2020
|
| NOGRR210 | Related to NPRR1005, Clarify Definition of Point of Interconnection (POI) and Add Definition Point of Interconnection Bus (POIB) | This Nodal Operating Guide Revision Request (NOGRR) clarifies language by use of revised defined term Point of Interconnection (POI) and new NPRR1005-proposed defined term Point of Interconnection Bus (POIB). | 02/26/2020 | ERCOT | No | 2.2.5, 2.2.10, 2.3, 2.7.3.2, 2.7.3.3, 2.7.3.4, 2.9.1, 3.3.2.1, 3.3.2.2, 8C and 8D | Approved | |
| NOGRR211 | RTC – NOG 2 and 9: System Operations and Control Requirements and Monitoring Programs | This Nodal Operating Guide Revision Request (NOGRR) updates language related to Supplemental Ancillary Service Markets (SASMs), Ancillary Service deployment, and Ancillary Service responsibilities and obligations to address changes associated with the implementation of Real-Time Co-optimization (RTC) of energy and Ancillary Services. | 03/25/2020 | ERCOT | Yes | 2.1, 2.2.4, 2.2.4.2, 2.3, 2.3.1.2, 2.3.2.1, 2.3.3.1, and 9.1.10 | Approved | |
| NOGRR212 | Related to NPRR1016, Clarify Requirements for Distribution Generation Resources (DGRs) and Distribution Energy Storage Resources (DESRs) | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with revisions within NPRR1016 and clarifies various reliability requirements for Distribution Generation Resources (DGRs). | 03/25/2020 | ERCOT | No | 2.2.7, 2.2.10, 2.6.1, 2.6.2, 2.6.2.1 (new), 2.7.3.2, 2.7.3.3, 2.9, 2.9.1, 2.9.2 (new), and 6.2.6.3.6 | Approved | |
| NOGRR213 | Alignment Changes for May 1, 2020 Nodal Operating Guide – NPRR998 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On April 14, 2020, the ERCOT Board approved NPRR998, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT can make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide. | 04/16/2020 | ERCOT | No | 4.5.3.3 | Approved |
05/01/2020
|
| NOGRR214 | Geomagnetic Disturbance (GMD) Measurement Data Reporting | This Nodal Operating Guide Revision Request (NOGRR) describes the process for ERCOT to collect Geomagnetically-Induced Current (GIC) monitor and magnetometer data to satisfy Requirements R11 and R12 of North American Electric Reliability Corporation (NERC) Reliability Standard TPL-007-3, Transmission System Planned Performance for Geomagnetic Disturbance Events. | 05/20/2020 | ERCOT | No | 6.1.1, 6.1.5.1 (new) | Approved |
10/01/2020
|
| NOGRR215 | Limit Use of Remedial Action Schemes | This Nodal Operating Guide Revision Request (NOGRR) will allow new Remedial Action Schemes (RASs) to be used only to address an actual or anticipated violation of transmission security criteria when market tools are insufficient to address those violations. This NOGRR also clarifies the procedures for retiring RASs. | 06/24/2020 | ERCOT | No | 8K, 11.1, 11.2, 11.2.1 | Approved | |
| NOGRR216 | Alignment Changes for September 1, 2020 Nodal Operating Guide – NPRR1002 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On August 11, 2020, the ERCOT Board approved NPRR1002, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT can make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide. | 08/18/2020 | ERCOT | No | 4.5.3.3 | Approved | |
| NOGRR217 | Related to NPRR1039, Replace the Term MIS Public Area with ERCOT Website | This Nodal Operating Guide Revision Request (NOGRR) removes the defined term Market Information System (MIS) Public Area from the Protocols and replaces any references to MIS Public Area with “ERCOT website.” | 08/18/2020 | ERCOT | No | 1.5.6, 2.9.1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.5.3.3, 7.2.2, 9.4.3, and 10.1 | Approved |
09/01/2020
|
| NOGRR218 | Removal of Annual Disturbance Monitoring Equipment Database Submission Requirement | This Nodal Operating Guide Revision Request (NOGRR) removes the requirement for disturbance monitoring equipment owners to submit their database annually to ERCOT. | 08/19/2020 | System Protection Working Group (SPWG) | Yes | 6.1.5 | Approved |
10/01/2020
|
| NOGRR219 | Related to NPRR1045, Transmission Operator Definition and Designation | This Nodal Operating Guide Revision Request (NOGRR) removes the definition of Transmission Operator (TO) from the Nodal Operating Guide because it is being moved to the ERCOT Protocols by NPRR1045. This NOGRR also clarifies existing language relating to Load shed obligations and removes the Load Shed Table from the Nodal Operating Guide. Instead, the Load Shed Table will be posted on the ERCOT Website. | 09/21/2020 | ERCOT | No | 1.3.1, 1.4, 4.5.3.4 | Approved |
05/01/2021
Section 1.4 |
| NOGRR220 | Greybox Baseline Updates re NOGRR212 | This Nodal Operating Guide Revision Request (NOGRR) carries NOGRR212, Related to NPRR1016, Clarify Requirements for Distribution Generation Resources (DGRs) and Distribution Energy Storage Resources (DESRs), revisions into existing greyboxes. | 09/23/2020 | ERCOT | No | 2.2.7, 2.2.10, 2.6.2, 2.7.3.2, 2.7.3.3, 2.9, and 2.9.1 | Approved |
12/01/2020
|
| NOGRR221 | Alignment Changes for January 1, 2021 Nodal Operating Guide – NPRRs 1010 and 1039 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On December 8, 2020, the ERCOT Board approved NPRRs 1010 and 1039, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 12/15/2020 | ERCOT | No | 4.5.3.3 | Approved |
01/01/2021
|
| NOGRR222 | Administrative Changes for February 1, 2021 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2020. This Administrative NOGRR accounts for the Load amendment on the 2019 Four Coincident Peak Load Calculation submitted through Public Utility Commission of Texas (PUCT) Docket Number 50333, and the recent transition of East Texas Electric Coop from Southwest Power Pool to the ERCOT Region. | 01/14/2021 | ERCOT | No | 4.5.3.4 | Approved |
02/01/2021
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| NOGRR223 | Add Phasor Measurement Recording Equipment Requirement to Modified Generating Facilities in Interconnection Process | This Nodal Operating Guide Revision Request (NOGRR) adds the requirement to have phasor measurement recording equipment at existing facilities that have an aggregated generating capacity above 20 MVA at a single site following any modification that is described in paragraph (1)(b) of Planning Guide Section 5.1.1, Applicability, in order to enter the Generation Resource Interconnection or Change Request process. | 02/09/2021 | ERCOT | No | 6.1.3.2 | Approved |
11/01/2021
|
| NOGRR224 | Administrative Changes for March 1, 2021 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2021. This NOGRR is submitted to meet ERCOT’s annual review of the Energy Emergency Alert (EEA) Level 3 Load shedding percentages as required by Section 4.5.3, Implementation. | 02/11/2021 | ERCOT | No | 4.5.3.4 | Approved |
03/01/2021
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| NOGRR225 | Administrative Changes for June 1, 2021 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2021. This NOGRR is submitted to account for the transition of City of Lubbock from Southwest Power Pool to the ERCOT Region. | 05/14/2021 | ERCOT | No | 4.5.3.4 | Approved |
06/01/2021
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| NOGRR226 | Addition of Supplemental UFLS Stages | This Nodal Operating Guide Revision Request (NOGRR) adds provisions for Transmission Operator (TO) “anti-stall” automatic firm Load shedding at 59.5 Hz in order to improve reliability by mitigating the risk of a total system-wide Blackout. | 05/14/2021 | LCRA | No | 2.6.1 | Approved | |
| NOGRR227 | Add Phasor Measurement Recording Equipment Location for Main Power Transformer for Intermittent Renewable Resource (IRR) | This Nodal Operating Guide Revision Request (NOGRR) allows for single phase current magnitude/angle data for an interconnected Intermittent Renewable Resource (IRR) over 20 MVA to be taken from either side of the main power transformer where turbines exist on a feeder(s) that were aggregated to two or more IRRs. | 05/19/2021 | ERCOT | No | 6.1.3.3 | Approved |
11/01/2021
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| NOGRR228 | Administrative Changes for July 1, 2021 Nodal Operating Guide – Load Shed Table | This Administrative Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Load Shed Table for 2021. This NOGRR is submitted to account for the addition of Golden Spread Electric Cooperative as a Transmission Operator (TO) in the ERCOT Region. | 06/15/2021 | ERCOT | No | 4.5.3.4 | Approved |
07/01/2021
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| NOGRR229 | Alignment Changes for September 1, 2021 Nodal Operating Guide – NPRR995 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On August 10, 2021, the ERCOT Board approved NPRR995, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 08/10/2021 | ERCOT | No | 4.5.3.3 | Approved |
09/01/2021
|
| NOGRR230 | WAN Participant Security | This Nodal Operating Guide Revision Request (NOGRR) ensures integrity of Wide Area Network (WAN) data transmission by adding a requirement to share data in a way that prevents Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks. | 08/11/2021 | ERCOT | No | 7.1.2 | Approved | |
| NOGRR231 | Update ERCOT Regional Map | This Nodal Operating Guide Revision Request (NOGRR) updates the ERCOT Regional Map in Section 1.1 to reflect the current boundaries of the ERCOT Region. | 08/17/2021 | ERCOT | No | 1.1 | Approved |
12/17/2021
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| NOGRR232 | Related to NPRR1093, Load Resource Participation in Non-Spinning Reserve | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with revisions from NPRR1093 to allow Load Resources that are not Controllable Load Resources to provide Non-Spinning Reserve (Non-Spin) Ancillary Service. | 09/01/2021 | ERCOT | Yes | 2.3 and 2.3.2.1 | Approved | |
| NOGRR233 | Related to NPRR1094, Allow Under Frequency Relay Load to be Manually Shed During EEA3 | This Nodal Operating Guide Revision Request (NOGRR) will allow a Transmission Operator (TO) and a Transmission and/or Distribution Service Provider (TDSP) to manually shed Load connected to under-frequency relays during an Energy Emergency Alert Level 3 (EEA3) if the affected TO can meet its overall Under-Frequency Load Shed (UFLS) requirement in Section 2.6.1 and its Load shed obligation under Section 4.5.3.4. | 09/01/2021 | Oncor | No | 2.6.1 | Approved |
12/17/2021
|
| NOGRR234 | Related to NPRR1098, Direct Current Tie (DC Tie) Reactive Power Capability Requirements | This Nodal Operating Guide Revision Request (NOGRR) revises the Nodal Operating Guide to be consistent with the Reactive Power capability requirements for Direct Current Ties (DC Ties) proposed by NPRR1098. A new Section 2.7.3.6, DCTO Responsibilities and DC Tie Requirements, is proposed to specify Direct Current Tie Operator (DCTO) responsibilities relative to Real-Time operational voltage control. | 09/29/2021 | ERCOT | No | 2.7.2, 2.7.3.3, and 2.7.3.6 (new) | Approved | |
| NOGRR235 | Combining Greyboxes and Other Corrections | This Nodal Operating Guide Revision Request (NOGRR) is submitted for transparency purposes to make small corrections to blackline and greybox language associated with NOGRR210, Related to NPRR1005, Clarify Definition of Point of Interconnection (POI) and Add Definition Point of Interconnection Bus (POIB), and NOGRR227, Add Phasor Measurement Recording Equipment Location for Main Power Transformer for Intermittent Renewable Resource (IRR), and to combine greyboxes at Section 3.3.2.1. | 10/20/2021 | ERCOT | No | 2.9.1, 3.3.2.1, and 6.1.3.3 | Approved |
03/01/2022
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| NOGRR236 | Related to NPRR1105, Option to Deploy Distribution Voltage Reduction Measures Prior to Energy Emergency Alert (EEA) | This NOGRR provides ERCOT the ability to instruct Transmission and/or Distribution Service Providers (TDSPs) to deploy any available distribution voltage reduction measures prior to ERCOT declaring an Energy Emergency Alert (EEA) if ERCOT determines it is possible that the deployment of these measures could avoid the need to declare an EEA and ERCOT does not expect to need these measures to reduce the amount of Load shedding that may be needed in EEA Level 3. These revisions also clarify the role of TDSPs in determining whether distribution voltage reduction should be implemented. | 11/04/2021 | ERCOT | Yes | 4.5.3.1 | Approved |
12/17/2021
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| NOGRR237 | Related to NPRR1106, Deployment of Emergency Response Service (ERS) Prior to Declaration of Energy Emergency Alert (EEA) | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide with Protocol changes proposed by NPRR1106, allowing ERCOT to deploy Emergency Response Service (ERS) prior to an Energy Emergency Alert (EEA). | 11/04/2021 | ERCOT | Yes | 4.5.3.1 | Approved |
12/17/2021
|
| NOGRR238 | Alignment Changes for December 17, 2021 Nodal Operating Guide – NPRR1094, NPRR1105, NPRR1106 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocols Section 6.5.9.4.2, EEA Levels. On December 10, 2021, the ERCOT Board approved NPRR1094, NPRR1105, and NPRR1106, all of which modified language in Protocols Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 12/10/2021 | ERCOT | No | 4.5.3.3 | Approved |
12/17/2021
|
| NOGRR239 | WAN Data Protection Responsibilities | This Nodal Operating Guide Revision Request (NOGRR) adds language to Section 7.1 to delineate the responsibilities of providing security for data transmitted between ERCOT, Qualified Scheduling Entities (QSEs), and Transmission Operators (TOs) as follows: • Establishes the “handoff” of data transmitted between ERCOT and QSEs/TOs to be at the ERCOT-managed router located at each WAN Participant’s WAN demarcation point; • Establishes that ERCOT will manage data encryption keys for data transmitted between ERCOT and the ERCOT-managed router located at each WAN Participant’s WAN demarcation point; and • Establishes that QSEs and TOs are responsible for any data protection downstream of the ERCOT-managed router located at each WAN Participant’s WAN demarcation point. | 01/19/2022 | ERCOT | Yes | 7.1 | Approved |
06/01/2022
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| NOGRR240 | Direct Current Tie (DC Tie) Ride-Through Requirements | This Nodal Operating Guide Revision Request (NOGRR) establishes frequency and voltage ride-through requirements for new Direct Current Ties (DC Ties) interconnecting to the ERCOT System after January 1, 2021, and certain DC Ties that will be modified. | 02/16/2022 | ERCOT | No | 2.6.3 (new) and 2.10 (new) | Approved |
07/01/2022
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| NOGRR241 | Related to NPRR1127, Clarification of ERCOT Hotline Uses | This Nodal Operating Guide Revision Request (NOGRR) clarifies that an Entity that is required to have Hotline and 24-hour, seven-day-per-week communications with ERCOT is expected to answer the call and has a duty to proactively ensure situational awareness in emergency situations. | 03/23/2022 | ERCOT | No | 3.2.1, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.5.3, 4.5.3.2, 4.5.3.5 | Approved | |
| NOGRR242 | Update POIB References | This Nodal Operating Guide Revision Request (NOGRR) updates references to Point of Interconnection (POI) to Point of Interconnection Bus (POIB). | 06/22/2022 | ERCOT | No | 2.3.7.5 | Approved |
11/01/2022
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| NOGRR243 | Implementation of Seasonal Load Shed Tables | This NOGRR modifies the Load Shed Table of the Nodal Operating Guide to include separate Load shed obligations for the winter and summer seasons to align with Senate Bill 3 directives. | 09/29/2022 | Joint TOs | Yes | 4.5.3.4 | Approved | |
| NOGRR244 | Alignment Changes for December 1, 2022 Nodal Operating Guide – NPRR1127 | This NOGRR aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On October 18, 2022, the ERCOT Board recommended approval of NPRR1127 which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 10/20/2022 | ERCOT | No | 4.5.3.3 | Approved | |
| NOGRR245 | Inverter-Based Resource (IBR) Ride-Through Requirements | This Nodal Operating Guide Revision Request (NOGRR) replaces the current voltage ride-through requirements for Intermittent Renewable Resources (IRRs) with voltage ride-through requirements for Inverter-Based Resources (IBRs) and Type 1 and Type 2 Wind-powered Generation Resources (WGRs) and provides new frequency ride-through requirements for IBRs and Type 1 and 2 WGRs consistent with or beyond requirements identified in the new 2800-2022 - Institute of Electrical and Electronics Engineers (IEEE) Standard for Interconnection and Interoperability of Inverter-Based Resources (IBRs) Interconnecting with Associated Transmission Electric Power Systems (“IEEE 2800-2022 standard”). | 01/11/2023 | ERCOT | Yes | 2.6.2, 2.6.2.1, 2.6.2.1 (new) 2.6.2.1.1 (new), 2.6.4 (new), 2.9, 2.9.1, 2.9.1.1 (new), 2.9.1.2 (new), 2.11 (new), 2.11.1(new), 2.11.2 (new) 2.12 (new), 2.12.1 (new), 2.12.1.1 (new), 2.12.1.2 (new) 2.12.1.3 (new), and 2.13 (new) | Approved |
10/01/2024
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| NOGRR246 | Related to NPRR1161, Clarify AVR Notification Requirements for IRRs | This Nodal Operating Guide Revision Request (NOGRR) clarifies that Intermittent Renewable Resources (IRRs), who remain synchronized to the ERCOT System but are not able to provide reactive power when not providing real power, do not have to notify ERCOT other than the Real-Time telemetered status. | 02/07/2023 | ERCOT | No | 2.2.5, 2.7.3.4 | Approved | |
| NOGRR247 | Change UFLS Stages and Load Relief Amounts | This Nodal Operating Guide Revision Request (NOGRR) modifies the ERCOT automatic Under-Frequency Load Shed (UFLS) program by increasing the number of Load shed stages from three to five and changing the Transmission Operator (TO) Load relief amounts to uniformly increment by 5% for each stage. The NOGRR also adds a UFLS minimum time delay of six cycles (0.1 seconds), and adds 59.1 Hz to the list of UFLS stages in paragraph (3) of Section 2.6.1. Additionally, this NOGRR revises the grey-box language from NOGRR226 in Section 2.6.1 to provide that the TO Load value used to determine the TO Load at each frequency threshold in Table 1 will be the value of TO Load at the time frequency reaches 59.5 Hz, rather than the value of TO Load at the time of reaching each successive frequency threshold, consistent with the current method for determining TO Load in Table 1, and proposes an effective date of October 1, 2026 for both NOGRR226 and NOGRR247. | 02/15/2023 | ERCOT | No | 2.6.1 | Approved | |
| NOGRR248 | Related to NPRR1157, Incorporation of PUCT Approval into Revision Request Process | This Nodal Operating Guide Revision Request (NOGRR) requires all Revision Requests to be approved by the Public Utility Commission of Texas (PUCT) prior to implementation; standardizes all Revision Requests be considered by the ERCOT Board of Directors; adds an Independent Market Monitor (IMM) opinion, ERCOT opinion, and the ERCOT Market Impact Statement to the TAC Report; and revises possible actions on a Revision Request from “defer” to “table” as currently captured in motions. | 02/22/2023 | ERCOT | Yes | 1.3.1, 1.3.3.2, 1.3.3.3, 1.3.3.9, 1.3.3.10, 1.3.3.11 (new), 1.3.3.11, and 1.3.5 | Approved |
06/01/2023
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| NOGRR249 | Communication of System Operating Limit Exceedances | This Nodal Operating Guide Revision Request (NOGRR) specifies the methods for Transmission Operators (TOs) to receive electronic communication of system operating limit exceedances from ERCOT. | 03/17/2023 | ERCOT | No | 3.7 | Approved |
04/01/2024
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| NOGRR250 | Related to NPRR 1171, Requirements for DGRs and DESRs on Circuits Subject to Load Shedding | This Nodal Operating Guide Revision Request (NOGRR) removes language that prohibits Distribution Service Providers (DSPs) from connecting Distribution Generation Resources (DGRs) and Distribution Energy Storage Resources (DESRs) to circuits included in an Under-Frequency Load Shed (UFLS) scheme to align with NPRR1171. NPRR1171 recognizes that some DGRs and DESRs may be connected to circuits that are subject to Load shed. | 03/29/2023 | ERCOT | No | 2.6.1 | Approved | |
| NOGRR251 | Add Cold Weather Conditions to Template for Emergency Operations Plan | This Nodal Operating Guide Revision Request (NOGRR) aligns Section 8, Attachment L, Emergency Operations, with North American Electric Reliability Corporation (NERC) Reliability Standard EOP-011-2, Emergency Preparedness and Operations, by adding cold weather conditions to the template used for the development of emergency operations plans. | 04/17/2023 | ERCOT | No | 8 - Attachment L | Approved | |
| NOGRR252 | Related to NPRR1176, Update to EEA Trigger Levels | This Nodal Operating Guide Revision Request (NOGRR) aligns Nodal Operating Guide language with NPRR1176, which revises the Energy Emergency Alert (EEA) procedures to require a declaration of EEA Level 3 when Physical Responsive Capability (PRC) cannot be maintained above 1,500 MW and will require ERCOT to shed firm Load to recover 1,500 MW of reserves within 30 minutes, modifies the trigger levels for EEA Level 1 and EEA Level 2, changes the trigger for ERCOT’s consideration of alternative transmission ratings or configurations from Advisory to Watch when PRC drops below 3,000 MW, and restores a frequency trigger for the declaration of EEA Level 3 if the steady-state frequency drops below 59.8 Hz for any period of time. | 04/25/2023 | ERCOT | No | 4.2.2, 4.5.3, and 4.5.3.1 | Approved |
11/01/2023
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| NOGRR253 | Related to NPRR1178, Expectations for Resources Providing ERCOT Contingency Reserve Service | This Nodal Operating Guide Revision Request (NOGRR) aligns the Nodal Operating Guide language regarding ECRS and Non-Spin with the revisions proposed in NPRR1178, as well as the Protocol language approved in NPRR1096, Require Sustained Two-Hour Capability for ECRS and Four-Hour Capability for Non-Spin. This NOGRR also clarifies that ERCOT may manually deploy Load Resources other than Controllable Load Resources that are providing ECRS or Responsive Reserve (RRS) to maintain a minimum 500 MWs of Physical Responsive Capability (PRC) reserves on SCED-dispatachable Resources to continuously balance the Demand with supply while maintaining the stable grid frequency for smaller disturbances. | 05/03/2023 | ERCOT | Yes | 2.3, 2.3.2.1, 2.3.3.1, 4.8.1, and 4.8.2 | Approved |
07/01/2023
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| NOGRR254 | Alignment Changes for August 1, 2023 Nodal Operating Guide – NPRR1143 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On June 20, 2023, the ERCOT Board recommended approval of NPRR1143, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 06/27/2023 | ERCOT | No | 4.5.3.3 | Approved | |
| NOGRR255 | High Resolution Data Requirements | This Nodal Operating Guide Revision Request (NOGRR) establishes high-resolution data requirements. | 06/29/2023 | ERCOT | No | 6.1, 6.1.1, 6.1.1.1 (new), 6.1.2, 6.1.2.1, 6.1.2.2, 6.1.2.3, 6.1.2.4, 6.1.3, 6.1.3.1 (new), 6.1.3.1, 6.1.3.2, 6.1.3.3, 6.1.3.4, 6.1.3.2 (new), 6.1.3.2.1 (new), 6.1.3.2.2 (new), 6.1.3.2.3 (new), 6.1.3.2.4, (new), 6.1.4 (new), 6.1.4.1 (new), 6.1.4.1.1 (new), 6.1.4.1.2 (new), 6.1.4.3 (new), 6.1.4.4 (new), 6.1.4, 6.1.5, 6.1.6 and 8M | Approved |
08/01/2024
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| NOGRR257 | Removal of Redundant ERS Reporting Requirement | This Nodal Operating Guide Revision Request (NOGRR) resolves a conflict in Emergency Response Service (ERS) event reporting timelines between the Operating Guide and Protocols by striking the 90-day event reporting requirement in the Operating Guide. | 08/21/2023 | ERCOT | No | 9.1.2 | Approved |
03/01/2024
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| NOGRR258 | Related to NPRR1198, Congestion Mitigation Using Topology Reconfigurations | This Nodal Operating Guide Revision Request (NOGRR) proposes changes to align the Nodal Operation Guides with NPRR1198 that adds language to allow the use of Remedial Action Plans (RAPs) and Extended Action Plans (EAPs) to facilitate the market use of the ERCOT Transmission Grid. NOGRR258 also adds guardrails to ensure that topology reconfiguration requests meet basic reliability and economic criteria, and defines the process for submission, review, and approval of EAPs. This NOGRR and NPRR1198 leverage ERCOT’s existing Constraint Management Plan (CMP) process to quickly mitigate critical transmission congestion impacts by establishing a scalable process for topology reconfiguration requests that is transparent, predictable, equitable, workable, reliable, and compatible with existing planning processes. ERCOT already leverages topology optimization in the CMP processes. Since NPRR529, Congestion Management Plan was introduced in 2013 with the limitations that NPRR1198 proposes to revise, the power industry has evolved and there have been technological improvements that make transmission topology reconfigurations a powerful option to mitigate congestion beyond just use cases for which there is no feasible Security-Constrained Economic Dispatch (SCED) solution. | 08/31/2023 | EDF Renewables, Inc. | No | 11.1, 11.4, 11.4.1, 11.6, 11.8 (new), and 11.8.1 (new) | Approved | |
| NOGRR259 | Alignment Changes for November 3, 2023 Nodal Operating Guide – NPRR1176 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On August 31, 2023, the ERCOT Board recommended approval of NPRR1176, which modifies language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 09/26/2023 | ERCOT | No | 4.5.3.3 | Approved |
11/03/2023
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| NOGRR260 | Administrative Change for Nodal Operating Guide – Remove Obsolete Reference from List of Appealable TAC Actions | This Administrative Nodal Operating Guide Revision Request (NOGRR) removes an obsolete reference to TAC approval from the list of appealable TAC actions, as TAC no longer has final approval of guide Revision Requests, further aligning the Nodal Operations Guide revision process with that described in Protocol Section 21.4.12.2, Appeal of Technical Advisory Committee Action. Administrative changes to the Nodal Operating Guide to maintain consistency with Protocol Section 21, Revision Request Process, are allowed under paragraph (5) of Section 1.3.1, Introduction. | 10/12/2023 | ERCOT | No | 1.3.3.12 | Approved |
01/01/2024
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| NOGRR261 | Move OBD to Section 8 – Procedure for Calculating RRS Limits for Individual Resources | This Nodal Operating Guide Revision Request (NOGRR) incorporates the Other Binding Document “Procedure for Calculating Responsive Reserve (RRS) Limits for Individual Resources” into the Nodal Operating Guide. | 12/21/2023 | ERCOT | No | 2.3.1.2.1 and 8N (new) | Approved |
05/01/2024
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| NOGRR262 | Provisions for Operator-Controlled Manual Load Shed | This Nodal Operating Guide Revision Request (NOGRR) aligns provisions regarding manual and automatic firm Load shed and clarifies the proper use and interplay of Under-Voltage Load Shed (UVLS), Under-Frequency Load Shed (UFLS), and manual Load shed. | 03/20/2024 | ERCOT | No | 4.5.3, 4.5.3.4, and 8L | Approved |
12/01/2024
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| NOGRR263 | Related to NPRR1244, Clarification of Controllable Load Resource Primary Frequency Response Responsibilities | This Nodal Operating Guide Revision Request (NOGRR) clarifies that a Controllable Load Resource is only required to provide Primary Frequency Response when it is providing an Ancillary Service that requires the Controllable Load Resource to be capable of providing Primary Frequency Response. | 04/10/2024 | Priority Power | No | 2.2.8, 8J | Approved | |
| NOGRR269 | Alignment Changes for October 1, 2024 Nodal Operating Guide – NPRR1217 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On August 20, 2024, the ERCOT Board recommended approval of NPRR1217, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 08/22/2024 | ERCOT | No | 4.5.3.3 | Approved |
10/01/2024
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| NOGRR270 | Alignment Changes for December 1, 2024 Nodal Operating Guide – NPRR1221 | This Nodal Operating Guide Revision Request (NOGRR) aligns Energy Emergency Alert (EEA) language in Section 4.5.3.3 with Protocol Section 6.5.9.4.2, EEA Levels. On October 10, 2024, the ERCOT Board recommended approval of NPRR1221, which modified language in Protocol Section 6.5.9.4.2. Paragraph (6) of Section 1.3.1, Introduction, provides that ERCOT may make changes to the Nodal Operating Guide to maintain duplicate language between the Protocols and the related sections of the Nodal Operating Guide, and requires that Section 4.5.3.3 be modified only by an Alignment NOGRR. | 10/15/2024 | ERCOT | No | 4.5.3.3 | Approved |
12/01/2024
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