N-1Application
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BEFORE THE NOVA SCOTIA ENERGY BOARD OF THE PROVINCE OF NOVA SCOTIA North American Electric Reliability ) Corporation ) THIRD QUARTER 2025 APPLICATION FOR APPROVAL OF RELIABILITY STANDARDS OF THE NORTH AMERICAN ELECTRIC RELIABILITY CORPORAT...
AI summary The document is an application for the approval of reliability standards by the North American Electric Reliability Corporation (NERC) before the Nova Scotia Energy Board. It outlines a proceeding related to reliability standards in the third quarter of 2025.
The North American Electric Reliability Corporation ("NERC") hereby submits to the Nova Scotia Energy Board ("NSEB") an application for approval of NERC Reliability Standards approved by the United States Federal Energy Regulatory Commissi...
AI summary NERC has submitted an application to the Nova Scotia Energy Board to make certain Reliability Standards, approved by FERC in the third quarter of 2025, mandatory and enforceable in Nova Scotia. The application also proposes retiring EOP-012-2. Supporting documents include exhibits listing the standards, their details, and an updated glossary.
A. Background: NERC Quarterly Filing of Proposed Reliability Standards Pursuant to Section 215 of the Federal Power Act ("FPA"),2 NERC is certified by FERC as the Electric Reliability Organization ("ERO") in the United States.3 Under FPA S...
AI summary The document outlines the background of NERC's quarterly filing of proposed Reliability Standards under Section 215 of the Federal Power Act, which mandates the development and enforcement of mandatory reliability standards by the ERO, certified by FERC. These standards apply to all users, owners, and operators of the Bulk-Power System in the United States.
C. Description of Proposed Reliability Standards, Third Quarter 2025 As provided in the table below, during the third quarter of 2025, FERC issued two orders approving the following Reliability Standards and definitions: (1) PRC-024-4 (Fre...
AI summary In the third quarter of 2025, FERC approved three new Reliability Standards: PRC-024-4, PRC-029-1, and EOP-012-3. These standards address frequency and voltage protection settings, ride-through requirements for inverter-based resources, and extreme cold weather preparedness. No other standards applicable to Nova Scotia were approved during this period.
es within 12 months 14 Order Approving Extreme Cold Weather Reliability Standard EOP-012-3 and Directing Data Collection, 192 FERC ¶ 61,229 (2025) [hereinafter EOP-012-3 Approval Order]. of the effective date of the Final Rule.15 Second, F...
AI summary The document outlines FERC's directives to NERC regarding the development and modification of IBR Ride-through Reliability Standards, specifically PRC-029-1 and PRC-024-4, as part of a broader effort to address IBR performance and reliability requirements under Order No. 901. Key actions include data collection, modifications to standards, and milestones for submission.
oject 2025-01 Canadian-Specific Revisions to EOP-012-3, has been assigned a Medium priority for 2025-2026. The current project status is available on the NERC website on the designated project page.19 Following completion of this project,...
AI summary The project 'Canadian-Specific Revisions to EOP-012-3' has been assigned a Medium priority for 2025-2026. After completion, any Canadian-specific variance or revision to the EOP-012 standard would be submitted to Canadian governmental authorities for approval, while NERC would inform the U.S. FERC of such revisions.
III. CONCLUSION NERC respectfully requests that NSEB approve the Reliability Standards as specified herein. Respectfully submitted, /s/ Sarah P. Crawford Lauren Perotti Assistant General Counsel Sarah P. Crawford Senior Counsel Alain Rigau...
AI summary NERC requests that NSEB approve the Reliability Standards as specified. The submission includes legal counsel from NERC and contact details for the involved parties.
Exhibit A-1 Reliability Standards Applicable to Nova Scotia, Approved by FERC in Third Quarter 2025
AI summary This exhibit lists the reliability standards applicable to Nova Scotia, which were approved by the FERC in the third quarter of 2025.
Exhibit A-1: Reliability Standard Applicable to Nova Scotia, Approved by FERC in Third Quarter 2025 Reliability Standard Effective Date Protection and Control (PRC) PRC-024-4 10/1/2026 PRC-029-1 10/1/2026 Emergency Preparedness and Operati...
AI summary Exhibit A-1 outlines reliability standards applicable to Nova Scotia, approved by FERC in the third quarter of 2025. These include PRC-024-4 and PRC-029-1, which are set to take effect on October 1, 2026, and EOP-012-3, effective October 1, 2025. Some standards are not yet effective but have been approved with future mandatory dates.
Exhibit A-2 Informational Summary of Reliability Standards Applicable to Nova Scotia, Approved by FERC in Third Quarter 2025
AI summary This exhibit provides an informational summary of reliability standards applicable to Nova Scotia, approved by the FERC in the third quarter of 2025. It outlines the standards relevant to the region's electricity grid and operations.
B. Requirements and Measures - R1. Each Generator Owner and Transmission Owner shall set applicable frequency protection4 in accordance with PRC-024-4 Attachment 1 such that the applicable protection does not cause the Facility to which it...
AI summary This section outlines requirements for setting frequency and voltage protection by Generator Owners and Transmission Owners in accordance with PRC-024-4 Attachments 1 and 2. Exceptions are allowed for documented regulatory or equipment limitations. Evidence of compliance, such as setting sheets and calculations, is required.
Violation Severity Levels Violation Severity Levels R3. The Generator Owner or Transmission Owner documented the known non protection system equipment limitation that prevented it from meeting the criteria in Requirement R1 or R2 and commu...
AI summary The document outlines violation severity levels based on the timing of communication regarding non-protection system equipment limitations by Generator or Transmission Owners. The severity increases with delays in communication, with the most severe level being when no documentation or communication occurs within 120 calendar days.
D.A. Variance for the Quebec Interconnection This Variance replaces Requirement R2 of the continent-wide standard in its entirety and adds a new requirement, Requirement D.A.5., applicable to Planning Coordinators in the Quebec Interconnec...
AI summary This document introduces a Variance replacing Requirement R2 with new requirements D.A.2 and D.A.5, focusing on voltage protection settings for generators and transmission owners within the Quebec Interconnection. It outlines compliance timelines, exceptions, and documentation requirements for strategic power plants designated by Planning Coordinators.
This Variance adds a VSL for D.A.5 and modifies the VSL for R2 as follows: Violation Severity Levels R # Lower VSL Moderate VSL High VSL Severe VSL D.A.2. N/A N/A N/A The Generator Owner or Transmission Owner failed to set its applicable v...
AI summary This Variance modifies the Violation Severity Levels (VSL) for D.A.5 and adds a VSL for D.A.2, outlining different levels of severity for violations related to voltage protection settings and the designation of strategic power plants by the Planning Coordinator.
Version History Version Date Action Change Tracking 1 May 9, 2013 Adopted by the NERC Board of Trustees 1 March 20, 2014 FERC Order issued approving PRC 024-1. (Order becomes effective on 7/1/16.) 2 February 12, 2015 Adopted by the NERC Bo...
AI summary The document tracks the version history of a standard, detailing its adoption by the NERC Board of Trustees and approval by FERC through various orders and revisions over time, including updates related to dispersed power producing resources and changes aligned with FERC Order No. 901.
Version History Version Date Action Change Tracking 1 October 8, 2024 Draft 4 approved by the NERC Board of Trustees Developed under Project 2020-02 1 October 16, 2024 Draft 4 errata approved by the Standards Committee Approved errata Atta...
AI summary The document outlines the version history of a regulatory proceeding, including approvals of draft versions and errata. It also references an attachment related to voltage ride-through criteria.
Updated November 5, 2025 This Glossary lists each term that was defined for use in one or more of NERC's continent-wide or Regional Reliability Standards and adopted by the NERC Board of Trustees from February 8, 2005 through November 5, 2...
AI summary This document is a glossary of terms defined by NERC for use in reliability standards, adopted between February 8, 2005 and November 5, 2025. It is organized into sections including 'Subjectto Enforcement', 'Pending Enforcement', 'Filed and Pending Regulatory Approval', and 'Retired Terms'.
Any comments regarding this glossary should be reported to the NERC Help Desk. Select "Standards" from the "Service" drop-down menu and "Other" from the Standards Subcategory drop-down menu. Subject to Enforcement Area Control Error Projec...
AI summary The text provides definitions and details related to electric reliability standards and projects, including Area Control Error, Area Interchange Methodology, and Arranged Interchange. These are part of regulatory standards managed by NERC and involve compliance, enforcement, and technical processes.
2 FERC approved the WECC Tier One Reliability Standards in the Order Approving Regional Reliability Standards for the Western Interconnection and Directing Modifications, 119 FERC ¶ 61,260 (June 8, 2007). In that Order, FERC directed WECC...
AI summary FERC approved the WECC Tier One Reliability Standards in an order dated June 8, 2007, directing WECC to address inconsistencies between regional definitions and the NERC Glossary in developing permanent replacements.
3 FERC approved the WECC Tier One Reliability Standards in the Order Approving Regional Reliability Standards for the Western Interconnection and Directing Modifications, 119 FERC ¶ 61,260 (June 8, 2007). In that Order, FERC directed WECC...
AI summary The text discusses FERC's approval of WECC Tier One Reliability Standards in 2007 and the subsequent development of replacement standards to address inconsistencies with NERC Glossary definitions. WECC filed these replacement standards with FERC in 2009.
100614Comments - NSPI
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North American Electric Reliability Corporation M12577
AI summary The document references a matter (M12577) related to the North American Electric Reliability Corporation (NERC), indicating it is part of a regulatory proceeding involving electricity reliability standards.
2025 Q3 Application for Approval of Reliability Standards NS Power Recommendations January 16, 2026 NON-CONFIDENTIAL
AI summary NS Power submitted a non-confidential application on January 16, 2026, seeking approval for reliability standards in the 2025 Q3 proceeding.
- In its application dated November 25, 2025, the North American Electric Reliability Corporation - (NERC) applied to the Nova Scotia Energy Board (NSEB, Board) for approval of the following - new NERC Reliability Standard approved by the...
AI summary The North American Electric Reliability Corporation (NERC) has applied to the Nova Scotia Energy Board for approval of new NERC Reliability Standards and definitions, including PRC-024-4, PRC-029-1, EOP-012-3, and revised definitions related to Generator Cold Weather Constraint and Ride-through.
Revised Reliability Standards 29 30 31 32 By letter dated November 26, 2025, the NSEB requested comments from Nova Scotia Power Incorporated (NS Power, Company) on NERC's Application by December 23, 2025. On December 17, 2025 NS Power requ...
AI summary The NSEB requested comments from NS Power on NERC's revised reliability standards, with NS Power requesting an extension for its response. NS Power notes that NERC's applications include effective dates for reliability standards in the U.S., but not in Nova Scotia, and requests clarification from the NSEB. NS Power also highlights that its recommendations for NERC standards do not include VRFs and VSLs, and discusses the transition of NERC roles to the IESO-NS.
6 Reliability Standard PRC-024-4 (Frequency and Voltage Protection Settings for Synchronous Generators, Type 1 and Type 2 Wind Resources, and Synchronous Condensers) Group Protection and Control (PRC) Current version in Effect in Nova Scot...
AI summary The document discusses the implementation of the PRC-024-4 reliability standard in Nova Scotia, including its applicability, FERC approval, and NS Power's recommendation for its effective date. The retirement of the current PRC-024-3 standard is also outlined.
1 Reliability Standard EOP-012-3 (Extreme Cold Weather Preparedness and Operations) Group Emergency Preparedness and Operations (EOP) Current version in Effect in Nova Scotia EOP-012-2 Applicability This standard is applicable in Nova Scot...
AI summary The document discusses the approval of the EOP-012-3 Reliability Standard for extreme cold weather preparedness and operations in Nova Scotia. NS Power recommends its approval and outlines the effective date based on NSEB approval. EOP-012-2 will be retired upon the effective date of EOP-012-3.
DATE FILED: January 16, 2026 Page 11 of 12 1 5.0 CONCLUSION 2 3 In summary, NS Power has reviewed the NERC Application and recommends the NSEB: 4 5 (a) Approve Reliability Standard PRC-024-4, PRC-029-1 and EOP-012-3 effective as set out 6...
AI summary NS Power recommends that the NSEB approve specific NERC reliability standards and related definitions, while retiring older standards. The implementation of PRC-029-1 may require action from the IESO-NS in Nova Scotia.
100616Comments - IESO NS
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North American Electric Reliability Corporation M12577 2025 Q3 Application for Approval of Reliability Standards IESO Nova Scotia Recommendations January 16, 2026 NON-CONFIDENTIAL
AI summary This document is a non-confidential application by the IESO Nova Scotia for the approval of reliability standards in 2025 Q3, referencing the North American Electric Reliability Corporation. The matter number is M12577.
31 By letter dated November 26, 2025, the NSEB requested comments from Nova Scotia Power (NS 32 Power) and the Nova Scotia Independent Energy System Operator (IESO Nova Scotia) on NERC's 33 Application by December 23, 2025. NS Power subseq...
AI summary The NSEB requested comments from Nova Scotia Power and IESO Nova Scotia on NERC's application. NS Power requested an extension to submit comments, which was granted. IESO Nova Scotia is a not-for-profit corporation established under the More Access to Energy Act, with a mandate to maintain the reliability of the bulk power system and facilitate a competitive electricity market.
1 NS Power Recommendations Re: M12436 – NERC 2025 Q2 Application for Approval of Reliability Standards, October 20, 2025, p.5. 52 generation interconnection functions. Accordingly, IESO Nova Scotia will provide its comments 53 on the NERC...
AI summary IESO Nova Scotia recommends that the NSEB confirm effective dates for NERC reliability standards in Nova Scotia and notes that VRFs and VSLs are not included in their approval recommendations. The document references historical approvals and the transition from the NSUARB to the NSEB.
81 2.0 IESO NOVA SCOTIA RECOMMENDATION - 82 IESO Nova Scotia has reviewed NERC's Application and provides the following - 83 recommendations.
AI summary IESO Nova Scotia has reviewed NERC's Application and provides the following recommendations.
84 2.1 PRC-024-4 Reliability Standard Group Current version in Effect in Nova Scotia Applicability PRC-024-4: Frequency and Voltage Protection Settings for Synchronous Generators, Type 1 and Type Wind Resources, and Synchronous Condensers...
AI summary The document discusses the implementation of the PRC-024-4 Reliability Standard, which pertains to frequency and voltage protection settings for synchronous generators, wind resources, and synchronous condensers. The standard is applicable to Generator Owners and Transmission Owners, though IESO-NS does not perform these roles. The FERC approved the standard in Order No. 909, and the NERC effective date is set for October 1, 2026.