N-3NSPI (Synapse) RIR 1 to 65
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This includes 147 projects presented in ACE 2025 categorized as reliability investments Section Investment Category 2025 4.0 Storm Hardening - Vegetation Management $ 45,000,000 4.1 Distribution Corridor Widening with Managed Rights-of-Way...
AI summary The text outlines 147 reliability investment projects presented in the ACE 2025 report, including storm hardening, corridor widening, equipment upgrades, and grid modernization programs, with specific funding allocations and percentages of total program investments for 2025-2029.
1 Request IR-20: 22 detail on outage cause is available, please provide (e.g. tree fall-in vs. tree contact, 23 specific equipment failure, etc.); 24 25 (i) Condition score or indicator; 26 27 (j) Number of residential customers; 28 29 (k)...
AI summary The document contains a request for detailed information on outage causes, customer numbers, load data, and reliability plan investments. It also includes a response referring to Attachment 1 and noting that all distribution feeders are considered distribution-level.
MED/EXT 2012 CKAIFI 2013 CKAIFI 2014 CKAIFI 2015 CKAIFI 2016 CKAIFI 2017 CKAIFI 2018 CKAIFI 2019 CKAIFI 2012 CKAIDI 2013 CKAIDI 2014 CKAIDI 2015 CKAIDI 2016 CKAIDI 2017 CKAIDI 2018 CKAIDI 2019 CKAIDI St. Dev 1.97 1.52 1.92 1.76 1.91 1.58 1...
AI summary The table presents standard deviation and average values for CKAIFI and CKAIDI across multiple years, with data categorized by source feeder. It provides a statistical overview of variations over time for different feeders.
2025 Performance Standards Report Appendix I Page 8 of 10 2019 CKAIFI 2020 CKAIFI 2021 CKAIFI 2022 CKAIFI 2023 CKAIFI 2024 CKAIFI 2025 CKAIFI 2019 CKAIDI 2020 CKAIDI 2021 CKAIDI 2022 CKAIDI 2023 CKAIDI 2024 CKAIDI 2025 CKAIDI 11S-411 Defec...
AI summary The document presents a table with data on various causes of power outages and interruptions from 2019 to 2025, categorized under different locations and causes such as defective equipment, tree contacts, foreign interference, and adverse weather. The data includes numerical values for each year, indicating the frequency or impact of these causes.
13 Figure 5: Reliability Program Detailed 2025 Investment Breakdown Reliability Program Targeted Strategy 2025 Planned Investment 2025 Completed to Date 2025 Planned to Complete in Remainder of Year Anticipated YE Result Program Status Dis...
AI summary The document outlines the 2025 investment breakdown for a reliability program, including planned and completed work in distribution corridor widening, vegetation management, equipment upgrades, and grid modernization. Some projects were revised due to wildfire mitigation efforts and other factors.
11 3.2 2025 Priority Feeders Update 13 Please refer to [APPENDIX A: 2025 Highest Priority Distribution Feeders](#page 1-0) , which shows the list 14 of priority feeders for 2025. A data-driven and targeted program of reliability improvemen...
AI summary The document references an appendix listing the 2025 highest priority distribution feeders, indicating a data-driven approach to reliability improvement work based on feeder condition and past performance.
- 4 11,100 spans) of distribution vegetation management across the province and approximately 105 - 5 kilometers of transmission vegetation management. This work includes a combination of activities - 6 aimed at improving system reliabilit...
AI summary The text outlines NS Power's vegetation management program, which includes activities like rights-of-way establishment, hazard tree removal, and aerial pruning to improve system reliability and reduce outages. The program uses satellite imagery to assess vegetation conditions and inform risk-based decision-making.
7 Region 5 Region Distribution Vegetation Management Spans Kms Metro 1,114 61 NE 3,913 217 CB 1,874 104 West 4,230 235 Total 11,131 617 8
AI summary The document presents a table summarizing the distribution vegetation management spans and kilometers across various regions in Nova Scotia, including Metro, NE, CB, West, and Total.
18 Figure 9: Distribution Program Corridor Widening with Managed ROW Distribution Program 2025 Planned Kms Kms Completed YTD 2025 Revised Plan (Due to Wildfire Mitigation) Kms Project on Track (Y/N) 19 Distribution Corridor Widening with M...
AI summary The text discusses a distribution program corridor widening with managed rights-of-way, including planned and completed kilometers for 2025, and a revised plan due to wildfire mitigation. The table highlights the progress of the program and its alignment with the revised plan.
5 Figure 14: Trimming and Removal of Trees Around Existing Powerlines - 2025 Distribution Program 2025 Planned Kms Kms Completed Year to Date 2025 Revised Plan Kms Project on Track (Y/N) Trimming and Removal of Trees Around Existing Powerl...
AI summary Figure 14 outlines the planned and completed kilometers of trimming and removal of trees around existing powerlines in 2025. As of year-to-date, 205 kilometers have been completed, exceeding the original 177 kilometer plan, with a revised target of 260 kilometers. Figure 15 shows the geographic distribution of completed vegetation work.
1 Figure 20: 2025 Planned Trip Saver Installations Region # Additional Trip Savers Planned in 2025 # Trip Savers Installed 2025 Trip Saver Installation Target Status East 3 3 Completed Northeast 3 2 On Track Metro 1 1 Completed West 9 9 Co...
AI summary The document outlines the planned and completed installation of Trip Savers in various regions for 2025, with a focus on distribution infrastructure improvements. It also mentions the planning of new distribution feeders.
1 Figure 21: 2025 Build to Roadside Projects by Region Region 2025 Planned BTR kms YTD Completed BTR kms BTR Project Comments BTR Project Status East 3.2 0.7 On Track – Ongoing Projects In Progress Northeast 2.9 2.6 On Track – Projects Re-...
AI summary Figure 21 outlines the 2025 Build to Roadside (BTR) projects by region, showing planned and completed kilometers, as well as project status and comments. Section 5.1.4 discusses Distribution System Conductor Upgrades, highlighting the progress and status of these infrastructure projects.
5 The Distribution Conductor Upgrades program is a proactive initiative aimed at replacing aging 6 infrastructure to reduce the risk of outages and enhance the reliability and resilience of the 7 distribution system. 9 In 2025, NS Power se...
AI summary NS Power's Distribution Conductor Upgrades program aims to replace aging infrastructure to enhance system reliability and reduce outages. In 2025, a target of 39 kilometers of distribution line reconduction was set, with 73.7 kilometers completed, exceeding the original target. An additional 4.5 kilometers are scheduled for completion by year-end.
1 Figure 22: 2025 Distribution System Conductor Upgrades Region Feeders Planned to be Reconductored Km Planned to be Reconductored # Feeders Reconductored Kms Reconductored Feeder Reconductor Target Status East 2 5.4 4 17.1 West 5 9.7 13 2...
AI summary The document outlines planned conductor upgrades for the distribution system in various regions of Nova Scotia in 2025, including the number of feeders and kilometers to be reconducted. It also mentions a section on underground upgrades for the distribution system.
6 Figure 28: 2025 Planned Remote Terminal Unit Installations Region Area/Community Substation Installation Status Southwest Cape Breton Margaree 58C Complete Cape Breton Cleveland 22C On Track Northeast Tatamagouche 4N Complete West Hebron...
AI summary This section presents a table outlining the planned installation status of Remote Terminal Units (RTUs) across various regions in Nova Scotia as of 2025, with details on region, area/community, substation, and installation status.
Region Area/Community Feeder/Substation Installation Status West Three Mile Plains 79V-401 In Progress/On Track Metro Musquodoboit Harbour 87H-313 In Progress/On Track Metro Musquodoboit Harbour 87H-313 In Progress/On Track Northeast Dicki...
AI summary The table lists the installation status of various feeders and substations across different regions in Nova Scotia, with some projects in progress and others planned for execution in 2026. The section titled 'Fault Location Isolation and Service Restoration' is referenced but not elaborated upon in the text.
11 Figure 30: 2026 Reliability Program Investment Overview Reliability Program 2026 Anticipated Spend Storm Hardening – Targeted Equipment Replacement and Upgrades $178.9 Storm Hardening – Vegetation Management $45.0 Advanced Grid Moderniz...
AI summary The 2026 Reliability Program investment overview outlines anticipated spending on storm hardening, vegetation management, and grid modernization, with a total investment of $234.6 million. Key initiatives include equipment replacement, corridor widening, and the deployment of advanced grid technologies.
13 Figure 33: 2026 Distribution Vegetation Work Plan by Region Region Distribution Spans Kms Metro 1,770 97 Northeast 2,576 145 East 4,020 224 West 7,125 396 Total 15,491 862 15 The 2026 vegetation management plan will be reviewed and upda...
AI summary Figure 33 outlines the 2026 Distribution Vegetation Work Plan by region, showing the number of spans and kilometers for each area. The plan will be reviewed and updated after analyzing the 2025 data.
6 2026 Forecast Investment: $3.3 million - 8 NS Power's transmission vegetation management plan is strategically prioritized using a suite of - 9 advanced tools and modeling techniques designed to optimize the focus of forestry crews. This...
AI summary NS Power plans to invest $3.3 million in 2026 to widen approximately 121 kilometers of transmission rights-of-way by five meters as part of a storm hardening and reliability initiative. Advanced tools like growth modeling, IVM, LiDAR analysis, and inspection data are used to prioritize and optimize vegetation management efforts.
8 Figure 39: 2026 Build-to-Roadside Projects Region Feeder Project Name Build to Roadside kms Cape Breton 85S-401 Wreck Cove Rebuild 0.4 Cape Breton 103C-314 Grand Étang Water Crossing 0.9 Northeast 57C-426 Country Harbour Cell Tower Build...
AI summary The document outlines the 2026 Build-to-Roadside Projects, including specific regions, feeders, and project names with corresponding distances. It also mentions Distribution System Conductor Upgrades as part of the infrastructure planning.
1 Figure 40: 2026 Conductor Upgrades by Region Region Total Km of Line (Conductor Upgrade Program) Cape Breton 20.1 West 34.0 Metro 9.6 Northeast 17.2 2
AI summary Figure 40 outlines the 2026 Conductor Upgrade Program, detailing the total kilometers of line upgrades planned across different regions in Nova Scotia, including Cape Breton, West, Metro, and Northeast.
3 In 2026, NS Power plans to complete approximately 30.9 kilometers of line and phase extensions 4 to enhance system reliability and operational flexibility. These projects are designed to improve 5 load balancing, reduce voltage drops, an...
AI summary NS Power plans to complete 30.9 kilometers of line and phase extensions by 2026 to enhance system reliability, improve load balancing, and support growing customer demand in rural and developing areas.
11 12 Figure 41: 2026 Distribution Line and Phase Extension Projects by Region Region Total Km of Line/Phase Extension Northeast 5.5 Metro 10 West 15.4 13
AI summary The text presents Figure 41, which outlines the 2026 Distribution Line and Phase Extension Projects by Region, detailing the total kilometers of line/phase extension planned for the Northeast, Metro, and West regions.
1 Figure 45: 2025/2026 Planned Communications Path with Downline Reclosers Installation Region Area/Community Feeder/Substation Installation Status West Three Mile Plains 79V-401 In Progress/On Track Musquodoboit Metro Harbour 87H-313 In P...
AI summary The document outlines the 2025/2026 planned communications path with downline reclosers installation across various regions in Nova Scotia. It provides a table detailing the installation status of different areas, including regions such as West, Metro, Northeast, and Cape Breton, with specific feeders and substations. The table indicates that some installations are in progress, while others are in the design or planned for 2026.
9 1 • Device Deployment: The first phase involves ensuring the necessary field devices are in 2 place. While most of the required devices already exist on the system, some will be newly 3 installed, and others will replace older, less capa...
AI summary The document outlines the three-phase implementation plan for FLISR (Fault Location, Isolation, and Service Restoration) projects, including device deployment, connectivity enablement, and configuration. These projects are targeted for completion by the end of 2026 and are currently under consideration by the NSEB under matter M12417. A table details the planned FLISR implementation projects across various regions and communities.
3 Summary of Pole Monitoring Project Locations Region Feeder Location Pole Removals Pole Installs West 12V-302G Karsdale 40 ft CL4 Quantity: 10 45 ft CL3 Quantity: 2 (3471 Granville Rd) 45 ft CL1 Quantity: 8 40 ft CL3 Quantity: 1 Metro 2H-...
AI summary The text provides a summary of pole monitoring project locations, including regions, feeders, locations, pole removals, and pole installations. It also includes a request and response regarding the weighting of factors in the criticality score for each feeder.
1 Request IR-34: 12 (d) communities that are served by equipment that is overloaded or feeders that are 13 constrained; 14 15 (e) critical facilities; 16 17 (f) customers with or required to have backup power 18 19 (g) other customer types...
AI summary The response to Request IR-34 addresses the determination of risk ratings for customers and feeders. It clarifies that customer rate class, Mi'kmaq status, and medical information are not used in risk rating. Critical facilities are not included in feeder risk ratings, and feeder loading and balance are considered in condition scoring at the circuit level.
2025-2029 Five Year Reliability Plan Review IR-38 Attachment 2 Page 1 of 1 Investment Track Sub-Program Scalability Notes Section SAIDI H lour Per $1M (Low) SAIDI Hou r Per $1M (High) Proposed Incremental Investment SA DI Reduction (Low) S...
AI summary The document outlines investment tracks and sub-programs for the 2025-2029 Five Year Reliability Plan, focusing on storm hardening through vegetation management and equipment upgrades. It provides scalability ratings, investment amounts, and projected reductions in SAIDI and IDI metrics.
Table 1 – Normal Limits of Approach AC Systems Note 2.1 - Unqualified Personnel NSPI Nominal Circuit Voltage (Phase to Phase) C.S.A. Voltage Range (Phase to Ground) Limit of Approach Metres/Feet 200 – 300V Note 2.5 <220V 1.0 3.28 Note 2.3...
AI summary The text provides normal limits of approach for AC and DC systems for both qualified and unqualified personnel, specifying safe distances based on voltage levels. These limits are outlined in tables and notes, with additional considerations for jobs requiring encroachment on these limits.
22 Strategy Spans Kilometer Total Cost Cost/Span Cost/Kilometer Distribution Corridor Widening with Managed $ Rights-of-Way 3,618 201 11,944,226 $ 3,301 $ 59,424 Transmission Corridor Widening with Managed $ Rights-of-Way 120 2,881,238 $ 2...
AI summary The text discusses the costs associated with various infrastructure projects, including widening rights-of-way and trimming trees around power lines. It outlines how costs are determined through the RFP process and references external documents for further details.
(b) All transmission lines that had corridor widening completed in 2025 were targeted based on their vegetative condition and criticality to the transmission system. They are all NERC-regulated transmission lines and therefore considered h...
AI summary The text discusses the prioritization of transmission lines for corridor widening in 2025 based on their vegetative condition and criticality, with NERC-regulated lines being high priority. It also mentions the exception of line L-6002, which was widened concurrently with L-7009 due to shared corridors. LiDAR data is used to identify fall-in risks for line L-6511.
While residual risk remains, the proposed work supports sustaining transmission line reliability performance by reducing vegetation‑related exposure under severe weather conditions. Line Number Line/Structure Number VEG_POLYGO CONDUCTOR_ R...
AI summary The proposed work aims to reduce vegetation-related exposure on transmission lines under severe weather conditions, thereby supporting the sustainability of transmission line reliability performance. The text includes details of various spans with risk classifications and measurements.
82V-402 1 Request IR-44: 2 3 For each feeder listed in Figure 10: 2025 Trip Saver Installations on page 5 of the Reliability 4 Plan, please explain and provide all quantitative support for why these feeders were targeted 5 in 2025. Please...
AI summary The request asks for an explanation of why specific feeders were targeted for trip saver installations in 2025, including reliability improvements, costs, and reasons for not accomplishing work on some feeders. NS Power's response indicates that feeders were selected based on an asset management mechanism that assesses feeder risk, including condition and criticality.
(ii) The actual work completed was as follows: Region Feeders Reconductored km Reconductored Cape Breton 4 17.1 West 9 28.4 Metro 10 15.0 Northeast 7 13.2 Reconductoring was performed on a subset of feeders; however, in numerous cases this...
AI summary The actual work completed involved reconductoring feeders in various regions of Nova Scotia, with differing numbers of feeders and kilometers reconducted. However, this work was often a secondary outcome of the project, meaning the costs attributed to it do not fully represent the overall program's scope or cost.
2 Work completed at the feeder level is as follows: Region Feeder km Reconductored Cape Breton 1C-411 3.2 Cape Breton 35C-211 6.8 Cape Breton 58C-405 1.3 Cape Breton 15C-211 5.9 West 663V-211 1.8 West 16W-301 13.4 West 55V-313 0.1 West 55V...
AI summary The text lists the work completed at the feeder level in various regions of Nova Scotia, detailing the kilometers of feeders that were reconductored.
8 (iv) Work that was completed but not initially identified is as follows: Region Feeder km Reconductored Cape Breton 1C-411 3.2 Cape Breton 58C-405 1.3 West 663V-211 1.8 West 16W-301 13.4 West 55V-313 0.1 West 78W-301 0.5 West 57W-401 0.3...
AI summary This section details work completed by NS Power that was not initially identified, including reconductoring on various feeders across different regions. The work was prioritized based on feeder risk drivers and project readiness, with some projects not requiring Grade 1 assessments.
15 (iv) Additional underground-related work, not originally identified for execution 2025 16 occurred on the following feeders: 4S-323 111S-312 15S-303 22N-404 129H-412 104H-442 108H-413 113H-434 50V-401 652V-212 1 2 (v) The additional pro...
AI summary The document lists additional underground-related work performed in 2025 on various feeders by NS Power, including padmount replacements and targeted underground device replacements, which were not originally identified for execution in that year.
6 (a) Please refer to the table below. CI# Project Title 5 YR 2025 Forecast Total Reliability Improvements Reason for work not completed C0041807 L5534 Replacements and Upgrades $277,404 Upgrades Completed L6043 Replacements and Upgrades S...
AI summary The table outlines various projects related to reliability improvements in the Nova Scotia power grid, including replacements, upgrades, and retirements of infrastructure. Some projects have been completed, while others are pending due to factors such as engineering delays, new contracts, and alignment work.
NON-CONFIDENTIAL 1 risks or failures that happen each year. Due to these changes, several other 12 (c) Please provide the mitigation effectiveness (i.e. percent reliability improvement) for 13 each of the listed subprograms, separately (Co...
AI summary The text requests information on the mitigation effectiveness of subprograms, grid visibility and monitoring capabilities, and the level of control over Distributed Energy Resources (DERs). It also asks how the reliability plan exceeds existing requirements.
NON-CONFIDENTIAL 1 17 and feeder criticality are higher. Both the past performance as well as the volume of 18 customers on a given feeder were key condition and criticality factors used to identify 19 specific locations. The specific proj...
AI summary The text discusses the prioritization of RTU installations based on feeder risk, resource capacity, maintenance coordination, design readiness, and project dependencies, with specific project risk scores detailed in Attachment 1.
12 (c) Feeders associated with the listed substations are as follows: Region Area/Community Substation Feeders Cape Breton Southwest Margaree 58C 58C-403 58C-405 22C-401 Cape Breton Cleveland 22C 22C-402 22C-403 22C-404 4N-311 Northeast Ta...
AI summary The text lists feeders associated with various substations across different regions in Nova Scotia, including Cape Breton, Northeast, and West. Each substation is linked to specific feeders, providing a detailed mapping of the electrical infrastructure.
RTU Connectivity Substation Description Substation Criticality Substation Customers Feeder Criticality 58C 58C Southwest Margaree 5 3128 4 22C 22C Cleveland 3 4291 5 4N 4N Tatamagouche 5 4811 5 16W 16W Hebron 5 3452 5 89W 89W Bridgewater E...
AI summary The document discusses RTU connectivity, focusing on substation and feeder criticality, customer counts, and requests for information regarding lessons learned from previous projects related to downline connectivity and Control Center integration.
13 Automated and Increased segmentation ($) Automated and Increased segmentation ($) FLISR Solution Decentralized ($) Centralized FLISR Solution ($) 137H 2H-411, 104H 103H Feeder 85S-401 11S-411 414 129H-412 421 433 433 Material 830,111 40...
AI summary The table presents cost comparisons for different FLISR solutions, including centralized and decentralized options, with various cost components such as material, consulting services, contract, labour, and travel expenses. The data includes different feeder and segment numbers along with associated costs.
6 Feeder Circuit or FLISR Total 40% of 60% of Type Customers Customers Customers 85S-401 2,256 902 1,354 11S-411 3,315 1,326 1,989 Centralized 103H-433, 104H-433, 104H 423, 2H-411, 2H-421 10,954 4,382 6,572 Decentralized 129H-412, 137H-414...
AI summary The text presents a table showing the distribution of customers across different feeder circuits and FLISR types, including centralized and decentralized systems, with columns indicating total customers and percentages (40% and 60%).
NON-CONFIDENTIAL Duration (hrs) Count of Premise ID % Restored Customer Hours Avoided Count of Customer Interruptions Saved INC 116281045 6076 0 Momentary <1min 3619 60% 7744.66 3619 Sustained 1.23 1 0 Sustained 2.14 2455 40% 0 Sustained 3...
AI summary The document presents a table summarizing outage data, including duration, number of premises affected, restoration percentages, and customer interruptions saved. It also includes a request for information (IR-59) regarding the evaluation of integrating Distributed Energy Resources (DERs) into the Nova Scotia grid, lessons learned from prior projects, and the proposed budget.