N-12025 Report
45 passages
............................................................................ 67 16 Figure 46 - Wreck Cove Bring-to-Roadside Project..................................................................... 70 17 Figure 47 - Pleasant Bay Road Wi...
AI summary The text lists infrastructure projects and reliability investments for Nova Scotia Power, including road widening, tree trimming, and feeder performance improvements on specific power lines (e.g., 57W-402, 91W-411). It highlights efforts to enhance grid reliability, reduce outages, and track CKAIFI contributions over time.
1 1.0 INTRODUCTION – NOVA SCOTIA POWER’S COMMITMENT TO 2 RELIABILITY 3 4 At Nova Scotia Power, our team is focused on providing safe and reliable electricity to Nova 5 Scotians when and where they need it. Across the province each day, mor...
AI summary Nova Scotia Power (NSP) outlines its commitment to reliability through the $1.3 billion Five-Year Reliability Plan (2025–2029), aiming to reduce outage frequency and duration while maintaining affordable rates. Key initiatives include vegetation management, equipment upgrades for extreme weather resilience, and grid modernization. Progress in 2025 included $206 million in grid improvements.
ese 23 areas in Year 1: 24 25 (1) Vegetation Management & Tree Trimming 26 (2) Upgrading & Maintaining Equipment to better withstand extreme weather 27 (3) Modernizing the Grid 28 DATE FILED: March 31, 2026 Page 8 of 115 2025 Annual Perfor...
AI summary The 2025 Annual Performance Standards Report outlines Year 1 initiatives focusing on vegetation management, equipment upgrades for extreme weather resilience, and grid modernization to enhance system reliability.
plementation of installing larger, stronger poles and storm-hardened 27 system upgrades, such as coastal framing and clamp top insulators, to increase the 28 resiliency of the system. DATE FILED: March 31, 2026 Page 10 of 115 2025 Annual P...
AI summary The document outlines infrastructure upgrades to enhance grid resilience, including storm-hardened poles, coastal framing, and clamp top insulators. It also details 2025 upgrades to substations and protective devices with remote control and telemetry, aiming to reduce outage durations through grid modernization.
now under way for 22 3 additional devices for substations in 2026. Grid Modernization upgrades such as these are 4 proven methods to decrease the duration of outages for customers. 5 Nova Scotia Power is committed to meeting the establishe...
AI summary Nova Scotia Power is investing in grid modernization to improve reliability and reduce outages, targeting a 20% reduction in SAIDI by 2029 and enhancing resilience against climate change. The Five-Year Reliability Plan, detailed in the 2025 and 2026 ACE Plans, focuses on operational improvements and targeted investments to meet performance standards.
r reading in November was affected by a number of poor weather days affecting 6 travel and access. 7 8 Figure 9 shows that NS Power met the Estimated Bills metric through the first four months of 9 the year, prior to the cyber incident. Ho...
AI summary NS Power's billing processes were disrupted by a cyber incident on April 24, 2025, leading to a temporary pause in billing. The incident forced reliance on estimated billing for the remainder of the year, with billing resuming in June using manual methods and AMI systems.
Page 28 of 115 2025 Annual Performance Standards Report Non-Confidential 1 The Company responded to the loss of its primary billing process with back-up continuity 2 protocols, including implementing a manual meter reading program. NS Powe...
AI summary NS Power addressed a 2025 cyber incident disrupting billing systems by implementing manual meter reading, training staff, and restoring AMI connectivity. Over 90% of meter connectivity was restored by the report's filing, though the incident caused a surge in estimated bills (1.0% in 2024, 0.7% in 2023). Customer outreach included payment deferrals and community forums.
Page 39 of 115 2025 Annual Performance Standards Report Non-Confidential 1 In 2023 NS Power implemented enhancements to the operational Field Maps tool which enable 2 front-line staff such as crew leads and PLTs to update field-validated E...
AI summary NS Power enhanced its ETR process in 2023 by allowing real-time updates via Field Maps, integrating AMI data to refine outage scopes, and using an ETR dashboard in the EOC to monitor and adjust restoration targets during outages.
of 115 2025 Annual Performance Standards Report Non-Confidential 1 Figure 27 - Five-Year Reliability Plan Overview Reliability Total 2025 2026 2027 2028 2029 Program ($) Plan Storm Hardening - Targeted 152.4 181.1 198.7 192.4 191.8 916.4 E...
AI summary The 2025 Annual Performance Standards Report outlines a Five-Year Reliability Plan targeting a 20% reduction in SAIDI (from 5.10 to 4.29) and improved grid resilience via storm hardening, equipment upgrades, and advanced grid modernization. Investments total $1,259.3M by 2029, with 2025 SAIDI results showing improvement over 2024 despite remaining above targets.
15 2025 Annual Performance Standards Report Non-Confidential 1 (d) Build-to-Roadside 2 (e) Vegetation Management 3 These feeders were identified through inspections, engineering studies, field discussions and 4 outage history. These target...
AI summary The 2025 Annual Performance Standards Report outlines NSP's targeted investments in feeders, substation upgrades, and FLISR technology to improve reliability. Upgrades include remote control and telemetry for 23 protective devices, with $10.7M allocated in the 2026 ACE Plan for communication enhancements. The FLISR project is filed with the NSEB under matter M12417.
rovince. The FLISR Implementation 13 project includes work on Wreck Cove Feeder 85S-401 and is filed with the NSEB under matter 14 M12417 and is detailed below. 15 Reliability Engagement 16 The Reliability team has focused on supporting st...
AI summary The FLISR Implementation project on Wreck Cove Feeder 85S-401 is filed under NSEB matter M12417. NS Power's Reliability team engages stakeholders, including community leaders, through reliability updates, customer support, and regional Reliability Advisors across four provincial regions. Figure 31 lists 84 reliability engagements completed in 2025.
2025 Annual Performance Standards Report Non-Confidential 1 Figure 38 – Emergency Huts between North and French Mountain along 85S-401 2 3 DATE FILED: March 31, 2026 Page 64 of 115 2025 Annual Performance Standards Report Non-Confidential...
AI summary Nova Scotia Power (NSP) has invested $10 million since 2012 to improve reliability on feeder 85S-401, serving 2,266 customers. CKAIDI (Circuit Average Interruption Duration Index) metrics show a 56% improvement in outage duration between 2018-2022 and 2024-2025, demonstrating progress despite challenging winter conditions and terrain.
nce Improvement 2018-2022 Avg 2024-2025 Avg Percent Improvement CKAIDI 45.44 19.96 56.07 11 12 Figure 41 compares the average feeder performance for CKAIDI between 2018 and 2022 against 13 2024 and 2025. There is significant improvement in...
AI summary The document highlights a 56% reduction in CKAIDI (Circuit Average Interruption Duration Index) for feeder 85S-401 between 2018-2022 and 2024-2025, attributed to reliability investments and vegetation management. NS Power invested over $10M in reliability projects since 2012, with $483K spent on tree trimming in 2025 to reduce outages. Challenges remain due to terrain complexity and off-right-of-way tree risks.
Page 67 of 115 2025 Annual Performance Standards Report Non-Confidential 1 Fault Location Isolation and Service Restoration 2 NS Power continues to advance its grid modernization efforts through the deployment of FLISR 3 technology, which...
AI summary NS Power is implementing FLISR technology on feeder 85S-401 to enhance grid reliability through automated fault detection and service restoration. The process includes device deployment, connectivity enablement, and FLISR configuration, with 10 Intellirupters and 12 TripSavers to be installed in 2026.
ntelligence and automation logic. This enables the devices to detect 17 faults, isolate affected segments, and restore service to unaffected areas with minimal 18 human intervention. 19 NS Power believes these grid modernization investment...
AI summary NS Power proposes grid modernization investments on feeder 85S-401, including FLISR devices to automate fault detection and restoration, reducing outage durations and manual patrols. They also plan Bring-to-Roadside projects to improve infrastructure accessibility and reliability in remote areas, with $1.5M allocated for FLISR implementation by 2026.
lt location, safer and more efficient 8 restoration activities, and improved overall reliability for customers served by remote portions 9 of the feeder. 10 Wreck Cove Bring-To-Roadside 11 The Wreck Cove Bring-to-Roadside project involves...
AI summary The document outlines two infrastructure projects by Nova Scotia Power (NSP): the Wreck Cove Bring-to-Roadside project, which relocates distribution lines to improve reliability and safety for remote customers, and the Pleasant Bay Road Widening project, which coordinates with Parks Canada to relocate infrastructure during road expansion. Both aim to enhance grid efficiency and reliability.
arch 31, 2026 Page 70 of 115 2025 Annual Performance Standards Report Non-Confidential 1 roadside configuration. The work includes the installation of 26 poles and 850 meters of 2 primary and neutral conductors, resulting in the relocation...
AI summary The 2025 Annual Performance Standards Report details infrastructure upgrades near Pleasant Bay, including installation of 26 poles and 850 meters of conductors to realign power lines with a road widening project. The work is part of reliability investments outlined in Figure 45.
Year Project Description Investment Status Cape Smokey 2019 Bring-to- 2.9 km BTR $794,000 Completed Roadside Ingonish Center 2020 Bring-to- 0.9 km BTR $35,197 Completed Roadside L-6549 Transmission 2020 Upgrades to $2,189,000 Completed Lin...
AI summary The document outlines completed and ongoing infrastructure projects by Nova Scotia Power, including transmission line upgrades, vegetation management, and equipment replacements between 2019 and 2026, with investments ranging from $35,197 to $2,189,000.
Bring-to- 400m of three $193,521 On-going Roadside phase line Targeted Vegetation Vegetation 2025 $483,869 Completed Management Management – 96 Spans Relocating Pleasant Bay 2026 850m of single $251,198 Planned Widening phase line Approxim...
AI summary The text lists infrastructure projects for 2025 and 2026, including vegetation management, line widening, and FLISR implementation, with associated costs and statuses. Projects range from completed to planned, totaling $6.28 million.
the province 4 terminating at the 3W Substation on the south side of Lake Rossignol. Several distribution 5 substations are supplied by L-5532, including sources for feeders 57W-402 and 91W-411. 6 When an outage occurs on L-5532, customers...
AI summary NS Power plans two 2026 projects on L-5532 transmission line and 91W substation to improve reliability, with total costs of $5.5M. Projects aim to replace aging assets, enhance protection systems, and reduce outage impacts. Prior investments included $530k upgrades (2024-2025) and $4M vegetation management on L-5532.
Page 73 of 115 2025 Annual Performance Standards Report Non-Confidential 1 NS Power recognizes that improving the performance of L-5532 is essential to providing reliable 2 service to customers supplied by this transmission line. By replac...
AI summary NS Power highlights infrastructure upgrades on L-5532 to reduce equipment failures and improve reliability. The Caledonia Feeder 57W-402 showed improved outage frequency but missed targets, requiring further work. The feeder serves 336 rural customers and experienced 19 outages in 2025, including events on Major/Extreme Event days.
-402 can be found in Figure 48. Similarly, 5 the Reliability Investment Plan for L-5532 can be found in the section above. 6 7 Figure 48 - 57W-402 Distribution Reliability Investment Plan Year Project Description Investment Status Targeted...
AI summary The document outlines targeted reliability investments for Feeder 57W-402, including vegetation management projects and transmission upgrades on L-5532. NS Power highlights ongoing efforts to maintain feeder reliability through focused tree trimming and equipment replacement, with over $10 million invested in recent years. Transmission improvements are expected to significantly reduce outages for customers.
Page 82 of 115 2025 Annual Performance Standards Report Non-Confidential 1 and proactive reliability investments in upgrades to larger, stronger poles, and protective 2 equipment additions. 3 4 91W-411 Investment and Reliability Action Pla...
AI summary NS Power's 2025 report details $2.75M in reliability upgrades for feeder 91W-411, including vegetation management reducing tree-related CKAIFI by 38% (from 1.11 to 0.69). Investments include pole replacements, TripSavers, and a 2026 3-phase line upgrade. Performance shows improved outage reduction through targeted infrastructure work.
e upgrading of 5.3 km of 23 single phase line to 3-phase will begin execution in early 2026. 24 NS Power’s recent distribution reliability investments for 91W-411 can be found in Figure 53. 25 DATE FILED: March 31, 2026 Page 83 of 115 2025...
AI summary The document outlines NS Power's plan to upgrade 5.3 km of single-phase power lines to 3-phase by early 2026 and references Figure 53, which details distribution reliability investments for 91W-411. The text is part of the 2025 Annual Performance Standards Report filed on March 31, 2026.
Year Project Description Investment Status Targeted Vegetation Vegetation 2021 $558,576 Completed Management Management - 431 Spans Targeted Vegetation Vegetation 2022 $248,844 Completed Management Management – 178 Spans Targeted Vegetatio...
AI summary The document outlines completed and ongoing vegetation management projects (2021-2024) and infrastructure upgrades (2025-2026) by NS Power, including targeted spans and investments, with the Labelle Road extension involving 5.3 km of phase line upgrades.
Page 109 of 115 2025 Annual Performance Standards Report Non-Confidential 1 Figure 78 – Planned Outages by Month Planned Outages by Month 250 200 150 2025 100 2024 50 0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2 3 Figure 79 – Planne...
AI summary The 2025 Annual Performance Standards Report includes figures showing planned outages by month and type (e.g., customer requested, tree trimming, transmission reliability), with notes that all outage categories impact system reliability. Reliability was previously labeled as maintenance.
5 2025 Annual Performance Standards Report Non-Confidential 1 Figure 80 – Planned Outage Duration by Outage Type Planned Outage Duration (hours) by Outage Type 3000 2500 2000 1500 2025 2024 1000 500 0 Capital Customer Switching Reliability...
AI summary The 2025 Annual Performance Standards Report highlights NS Power's focus on reliability and resiliency through planned outages, with 56% of events related to reliability upgrades and 18% to capital improvements. The report also outlines 2026 performance targets, including a SAIDI target of ≤4.29, for NSEB approval.
on track through the first four months of the year but 24 ultimately missed the target because of the cyber incident. However, NS Power met the other 25 customer service targets. In fact, NS Power significantly exceeded the targets for all...
AI summary NS Power met most customer service targets in 2025 but missed one due to a cyber incident. The Board may impose penalties or require compliance plans under the Public Utilities Act. NS Power's Five-Year Reliability Plan aims to improve reliability through grid modernization and vegetation management, though full benefits will take time.
Figure 1 - Outage Operational System Uptime and Comments Application 2025 Uptime Comments ADMS 99.0% ADMS downtime in 2025 was primarily related to planned maintenance activities to restore the Backup Control Centre (BCC) site following im...
AI summary The document outlines the 2025 uptime performance of outage-related systems, noting ADMS downtime due to planned maintenance and hardware failures, NSP Outage Map interruptions from ADMS file transfers, BCP Outage Site full availability, HVCA with 18 hours of downtime, and 100% social media uptime for outage updates.
l customer hours (duration) of the device. The “customer hours” is calculated by multiplying the number of customers impacted by an event with the total hours (duration) of the outage. • Reliability projects are displayed as hatched rectan...
AI summary The text defines 'customer hours' as the product of impacted customers and outage duration, used in reliability metrics. It references reliability and vegetation management projects visualized in diagrams, and cites the 2025 Performance Standards Report Appendix J with matter number 85S-411.
Customer Impact Wreck Cove BTR 1.43 - 11.10 26.3 11.10 - 29.81 25.8 Devices from FLISR 827.6 29.81 - 64.33 New Intellirupters
AI summary The text outlines customer impact metrics for Wreck Cove BTR, referencing FLISR devices and Intellirupters with numerical ranges (e.g., 1.43–11.10, 29.81–64.33). It appears to discuss system reliability improvements through advanced grid technologies.
l customer hours (duration) of the device. The “customer hours” is calculated by multiplying the number of customers impacted by an event with the total hours (duration) of the outage. • Reliability projects are displayed as hatched rectan...
AI summary The text discusses reliability metrics including customer hours of interruption (CHI) and service point events, referencing a 2025 Performance Standards Report. It details infrastructure data for the 57W-402 feeder and substation, highlighting customer impact and outage duration calculations.
Work Depot: LIV 57W-402_2026.MXD Last revised by: Katie Chute Date revised: March 25th, 2026 2025 Performance Standards Report Appendix J Page 5 of 6 91W-411 INVESTMENT MAP The following map shows the feeder extents of 91W-411, a 25-kV cir...
AI summary The document presents a map of the 91W-411 circuit's 2025 outage events and reliability investments, visualizing customer impact through circle sizes and durations, alongside hatched rectangles for reliability projects and colored rectangles for vegetation management initiatives.
81S-306 00:09 00:11 1 39.58 1,649 Planned Transmission 1/26/2025 81S-307 00:09 00:11 2 19.03 732 Planned Transmission 1/26/2025 81S-305 00:09 00:11 2 43.60 1,677 Planned Transmission 1/26/2025 81S-304 00:09 00:11 2 26.74 955 Planned Transm...
AI summary The text presents a table of events with dates, codes, time intervals, durations, costs, and categories such as 'Planned Transmission,' 'Reliability,' 'Switching,' 'Capital,' and 'Tree Trimming.' Metrics include interruption durations, costs, and event types, reflecting operational and infrastructure-related activities.
3 Reliability 2/3/2025 57S-401 16:14 17:08 54 7.16 8 Reliability 2/3/2025 25W-302 19:07 21:48 161 32.14 12 Switching 2/4/2025 11S-411 01:13 05:40 267 13,950.75 3,135 Switching 2/4/2025 54H-302 03:06 04:19 73 81.67 67 Reliability 2/4/2025 1...
AI summary The text presents a table of reliability and switching event data with dates, durations, and customer impact metrics. It includes outage start/end times, affected circuits, interruption durations, and categories like 'Reliability,' 'Switching,' and 'Capital.'
55V-322 04:28 04:43 15 200.55 799 Switching 2/18/2025 55V-322 04:44 12:06 442 375.87 51 Switching 2/18/2025 55V-322 04:44 10:22 338 551.45 98 Switching 2/18/2025 55V-322 04:44 05:57 73 699.20 575 Switching 2/18/2025 65V-302 10:43 11:47 64...
AI summary The text presents a table of outage events with dates, circuit identifiers, timestamps, and reliability metrics. Entries categorize incidents as 'Switching' or 'Reliability,' indicating operational disruptions and their durations. The data reflects system performance during specific periods in early February 2025.
85 Reliability 3/15/2025 104H-422 13:16 16:12 176 23.51 8 Reliability 3/15/2025 15S-301 15:32 21:35 363 18.17 3 Reliability 3/15/2025 73W-411 17:05 20:00 176 8.79 3 Tree Trimming 3/15/2025 104H-423 20:07 21:00 54 6.24 7 Reliability 3/16/20...
AI summary The text presents a table of events with dates, durations, and categories such as 'Reliability,' 'Switching,' and 'Capital.' Entries include outage durations, customer interruptions, and event types, highlighting reliability issues and switching incidents between March 15–17, 2025, with some interruptions exceeding 600 hours.
19 Switching 5/18/2025 101H-423 09:21 10:35 74 14.73 12 Capital 5/18/2025 87H-312 10:54 12:10 75 7.51 6 Reliability 5/18/2025 50N-410 14:28 14:52 25 41.33 100 Switching 5/20/2025 92H-331 09:27 11:04 97 12.90 8 Tree Trimming 5/20/2025 50V-4...
AI summary A table listing power outage events with dates, durations, and categories such as 'Switching,' 'Reliability,' and 'Tree Trimming,' alongside associated metrics like customer interruptions and restoration times. The data appears to track service disruptions and maintenance activities managed by Nova Scotia Power.
15 Reliability 6/6/2025 113H-431 10:25 11:00 35 4.09 7 Reliability 6/6/2025 54H-304 10:59 11:29 30 5.51 11 Reliability 6/6/2025 62H-304 11:23 14:02 159 2.65 1 Reliability 6/6/2025 62H-304 13:59 14:43 43 0.72 1 Reliability 6/8/2025 102W-311...
AI summary The text presents a table of incident data with dates, identifiers, durations, and categories such as 'Reliability,' 'Switching,' 'Planned Transmission,' 'Capital,' and 'R.' The data appears to track events with associated metrics but lacks narrative context or discussion of themes beyond the raw figures.
7 133 57.75 26 Capital 8/28/2025 89W-302 09:40 15:23 343 22.84 4 Capital 8/28/2025 104H-433 09:54 11:26 91 21.32 14 Reliability 8/28/2025 37N-412 10:32 13:54 201 26.86 8 Reliability 8/28/2025 57S-402 12:44 14:49 125 284.85 137 Capital 8/29...
AI summary The text presents a table of outage events with dates, durations, and categories (e.g., 'Capital,' 'Reliability,' 'Switching'). It highlights interruptions affecting customers, including durations, numbers of customers impacted, and associated costs, reflecting operational challenges in grid management and infrastructure maintenance.
2.44 3 Reliability 9/18/2025 88W-323 09:54 10:14 20 62.95 190 Reliability 9/18/2025 12V-302 09:57 13:33 216 75.57 21 Reliability 9/18/2025 50N-410 10:07 11:02 55 0.91 1 Reliability 9/18/2025 4N-312 12:53 13:03 10 755.41 4,756 Planned Trans...
AI summary The text presents a table of events with dates, identifiers, durations, and categories such as 'Reliability,' 'Planned Transmission,' 'Switching,' and 'Capital.' Entries include outage durations, affected customers, and event types, suggesting analysis of grid reliability and operational performance.
Start Time (24- Restore Time (24- Duration Customer Hours of Customers Date Feeder CEA Subcause hour clock) hour clock) (Minutes) Interruption Interrupted 9/23/2025 14V-303 06:33 06:42 10 1.95 12 Planned Transmission 9/23/2025 20H-305 08:2...
AI summary The table lists power outage events from September 23–26, 2025, detailing feeder lines, outage durations, customer hours of interruption, and subcauses (e.g., Reliability, Tree Trimming, Switching, Capital). Events range from 8 to 621 minutes, affecting 4 to 313 customers, with subcauses including planned transmission, reliability issues, and tree trimming.
:19 13:46 327 5.46 1 Reliability 11/3/2025 36W-304 13:48 15:00 72 167.95 140 Switching 11/3/2025 96H-412 14:17 14:59 42 0.70 1 Reliability 11/3/2025 20H-304 14:59 15:00 2 1.15 45 Capital 11/4/2025 103W-311 10:19 10:37 18 5.01 17 Tree Trimm...
AI summary The text presents a table of events with dates, times, durations, and categories such as 'Reliability,' 'Switching,' 'Tree Trimming,' and 'Customer Requested.' It appears to track outage incidents, their causes, and associated metrics, focusing on grid operations and service disruptions.
captured by system level performance metrics (i.e., SAIDI and SAIFI). Metrics: 2025 Performance Standards Report Appendix O Page 3 of 8 CKAIFI is related to the frequency of interruptions experienced, which may be tied to a given circuit....
AI summary The text defines CKAIFI and CKAIDI metrics for evaluating power interruption frequency and duration per circuit. It outlines benchmarks where circuits in the worst 5% for two consecutive years are labeled 'problem circuits,' and those persisting for three years are 'chronic circuits.' Chronic circuits exceeding average values plus two standard deviations trigger penalties.
4 CKAIDI ≤24.60 ≤20.47 ≤20.51 ≤13.22 ≤17.86 ≤19.81 ≤16.98 ≤19.00 ≤16.54 target (worst 85S-402 (28.25) 85S-401 (67.68) 85S-401 (38.34) 88H-402 67C-411 (39.97) 11S-411 (22.84) 22C-402 (8.11) 91W-411 (31.81) 85S-401 (20.91) 5% of 16V-314 (4.0...
AI summary The text presents performance metrics for grid reliability indicators (CKAIDI) across multiple periods, referencing specific performance standards and matter numbers. It relates to the 2025 Performance Standards Report Appendix P, highlighting system performance targets and historical data comparisons.