N-1Application - Redacted
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1 10.2 Routine Capital Spending Project Breakdown Yr/Yr ........................................... 60 2 10.3 Like-for-Like Routine Replacements ................................................................... 64 3 10.4 2026 Routine Cap...
AI summary The document outlines the 2026 routine capital spending project breakdown, including directives related to the Annual Capital Expenditure (ACE) Plan, alignment with the Evergreen Integrated Resource Plan (IRP), and forecasts for ACE Plan expenditures from 2026 to 2030 by functional class and spending program.
1 11.0 DIRECTIVES AND MISCELLANEOUS 2 3 11.1 Board ACE Plan Directives and Stakeholder Commitments 4 5 NS Power has received a number of Directives from prior ACE Plan Decisions. The Company 6 has also made a number of commitments to stake...
AI summary NS Power is aligning its 2026 ACE Plan with the Evergreen Integrated Resource Plan (IRP) and the 2030 Clean Power Plan, focusing on transitioning to renewable energy and phasing out coal generation. The plan outlines sustaining capital investments for the remaining emitting fleet to ensure reliable operations.
of 782 REDACTED REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026 ACE Plan CONFIDENTIAL (Attachments Only) 1 such as the IRP, it is important to take into consideration the leveling of investment used for the 2 25-year capital forecast used...
AI summary The text discusses the 2026 ACE Plan and its comparison with the IRP, highlighting the importance of adjusting investment profiles based on actual utilization and operational data rather than long-term projections. Differences in investment timing are expected due to changes in unit performance and conditions.
uts of the condition score for these projects will be provided in subsequent ACE 10 Plans for five years following the in-service date of the project. 11 12 The Board’s Decision pertaining to the 2023 Performance standards provided the fol...
AI summary The Board has directed NS Power to prepare a comprehensive five-year reliability plan to track service improvements and progress against performance goals, to be filed by December 31, 2024. This follows the 2023 Performance Standards Report and relates to the 2026 ACE Plan.
Original Equipment Manufacturer (OEM) procedures. Without this teardown, there remains a significant risk that hidden defects could evolve into unplanned unit failures. Why do this project this way? A “run to failure” strategy is not appro...
AI summary The document discusses the decision to refurbish an existing engine rather than replace it, citing risks of unplanned failures and the cost-effectiveness of refurbishment. It references the 2025 10-Year System Outlook and the Evergreen IRP scenario, emphasizing the need to maintain system reliability and align with the Province’s Clean Power Plan.
agers who offer exper se and experience from different func onal areas within NS Power. The IRT Month DD, 2025 Page 5 of 113 Date: December 12, 2025 Page 524 of 782 REDACTED REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026 ACE Plan Appendix...
AI summary Nova Scotia Power Inc. outlines its capital planning and expenditure justification criteria, emphasizing integrated management of capital projects. The Nova Scotia Energy Board (NSEB) oversees electric utilities under the Energy and Regulatory Boards Act. Key terms include 'Planned and Advanced (P&A)' projects and the 'PowerPlan' software used for capital project management.
2026 ACE Plan Appendix E Page 2 of 17 Mersey Hydro Update Non-Confidential 1 TABLE OF CONTENTS 2 3 1.0 INTRODUCTION .............................................................................................................. 3 4 2.0 SUST...
AI summary The document outlines the Mersey Hydro Update as part of the 2026 ACE Plan Appendix E, covering investment sustainability, project development, NPV analysis, and upcoming IRP considerations. Sections include redevelopment, decommissioning costs, and stakeholder engagement, though content is partially redacted.
1 1.0 INTRODUCTION 2 3 NS Power owns and operates the Mersey Hydro System (MHS), a series of six hydroelectric 4 stations and a lake storage diversion along a 21km reach of the Mersey River. The 2026 ACE Plan 5 focuses on sustaining capita...
AI summary NS Power is updating the 2026 ACE Plan to address sustaining investments for the Mersey Hydro System (MHS) while evaluating long-term options via the Integrated Resource Plan (IRP). The Board directed NS Power to include NPV analyses comparing decommissioning, partial decommissioning, and redevelopment options, along with assumptions, in the ACE Plan application following the next depreciation study.
1 future of the Mersey Hydro System (MHS). While the analysis includes simplified assumptions 2 for replacement energy and capacity costs, these do not represent a comprehensive system level 3 evaluation. A complete review combining decomm...
AI summary The text discusses the redevelopment costs of the Mersey Hydro System (MHS), noting that current estimates use simplified assumptions and require a comprehensive system-level evaluation. A detailed analysis combining decommissioning, redevelopment capital estimates, and system modeling will be conducted as part of the upcoming Integrated Resource Plan (IRP) process to ensure accurate cost comparisons.
1 5.0 UPCOMING IRP CONSIDERATIONS 2 3 NS Power’s 2020 Integrated Resource Plan included a detailed evaluation of the MHS using both 4 the NS Power Decision Analysis (DA) Model and E3’s RESOLVE capacity expansion model. The 5 analysis compa...
AI summary NS Power's 2020 and Evergreen IRP analyses concluded that rebuilding Mersey Hydro Station (MHS) is more economical than decommissioning, citing its role in system reliability and decarbonization. However, NPV values alone omit full replacement costs, necessitating a comprehensive review. The 2025/2026 IRP will update MHS evaluation with refreshed load and emissions assumptions.
ependent Electricity System Operator (IESO Nova Scotia). This next IRP will provide an 26 updated framework for evaluating the MHS, incorporating refreshed assumptions on load growth, 27 emissions targets, resource costs, and system integr...
AI summary The upcoming 2025/2026 Integrated Resource Plan (IRP) will evaluate the Mersey Hydro Station (MHS), incorporating updated assumptions on load growth, emissions targets, resource costs, and system integration. No final decisions on decommissioning or redevelopment of MHS will be made until the IRP provides direction, ensuring alignment with provincial energy policy and system reliability needs.
1 6.0 CONCLUSION 2 3 NS Power has increased the incremental sustaining investment in the MHS to maintain safe and 4 reliable operation of the system, while deferring a major investment for customers until the future 5 of the MHS is determi...
AI summary NS Power defers major redevelopment of Mersey Hydro Station (MHS) until the next Integrated Resource Plan (IRP) to avoid long-term commitments, aligning with Nova Scotia’s Clean Power Plan and prioritizing affordability. Incremental investments maintain safe operations while conducting preliminary studies and stakeholder engagement.
s more information is obtained, and the HIP is 23 continuously updated as forecasts are revised as result. 24 25 NS Power reiterates that it is committed to ensuring the Mi’kmaw, stakeholders, and the Board are 26 actively engaged prior to...
AI summary NS Power emphasizes stakeholder engagement for the Mersey Redevelopment project, relying on the 2025 Integrated Resource Plan (IRP) for decision-making. NPV figures exclude full system replacement costs, and a Capital Item (CI) application will be submitted post-IRP completion. Engagement with the Mi’kmaw and DFO is ongoing.
.................................... 23 17 6.1.5 Commercial Net Metering ........................................................................ 25 18 6.1.6 Additional Renewable Energy Procurements ...........................................
AI summary The document outlines sections of an Integrated Resource Plan (IRP) action plan, including commercial net metering, battery storage projects, renewable energy integration, the NS-NB Reliability Intertie Project, fast-acting generation, fuel conversions, and coal phase-out initiatives. Key topics include renewable energy procurement, grid stability, and infrastructure planning.
2026 ACE Plan Appendix F Page 4 of 55 The Path to 2030 – 2025 Update Non-Confidential 1 TABLE OF FIGURES 2 3 Figure 1 - 2030 Clean Power Plan Resources ................................................................................. 6 4 F...
AI summary The appendix lists figures related to Nova Scotia's 2030 Clean Power Plan, including project statuses for renewable energy initiatives, battery storage (Bridgewater BESS), and coal retirement timelines. It outlines the 2025 10-Year System Outlook Report and tracks progress on the Green Choice Program, PHP Wind, and Minas Highlands Wind projects.
600 Total Fuel Conversions 609 Load Management Initiatives 150 2025-2029 2025-2029 Total Coal Phase Out 1,229 1 1 Timing has been updated to reflect that this wind project will come online in phases. Please refer to Section 6.1.3.3 2 for f...
AI summary The document outlines Nova Scotia Power's strategy to integrate renewable and dispatchable resources through the Evergreen IRP Action Plan, emphasizing collaboration with stakeholders including the government, IPPs, EfficiencyOne, Mi’kmaw partners, and IESO-NS. It highlights flexibility in resource additions and coordination for The Path to 2030, incorporating load management and green hydrogen development.
: 30 31 • The 2030 Decarbonization Goals 32 • The Province of Nova Scotia’s 2030 Clean Power Plan 33 • Creation of the Independent Energy System Operator of Nova Scotia (IESO-NS) Page 8 of 55 Date: December 12, 2025 Page 661 of 782 REDACTE...
AI summary The document outlines Nova Scotia's 2030 Clean Power Plan, the Integrated Resource Plan (IRP) Action Plan, and the creation of the Independent Energy System Operator of Nova Scotia (IESO-NS). It details resource development, project management, and timelines for meeting decarbonization goals.
2026 ACE Plan Appendix F Page 10 of 55 The Path to 2030 – 2025 Update Non-Confidential 1 3.0 2030 DECARBONIZATION GOALS 2 3 NS Power’s 2030 decarbonization goals are mandated under several legislative and regulatory 4 frameworks. Although...
AI summary NS Power must achieve 80% renewable electricity sales by 2030 under amended regulations, requiring an additional 1,100 GWh from independent producers and allowing out-of-province renewable sources. These goals are integrated into the Evergreen IRP and the 2030 Clean Power Plan.
urce outside Nova Scotia. 22 23 This requirement was incorporated into the most recent Evergreen IRP and is considered in the 24 2030 Clean Power Plan. 25 2 N.S. Reg. 110/2021. Page 10 of 55 Date: December 12, 2025 Page 663 of 782 REDACTED...
AI summary Nova Scotia's Environmental Goals and Climate Change Reduction Act mandates 80% renewable electricity by 2030 and coal phase-out by 2030. These targets are integrated into the Evergreen IRP and 2030 Clean Power Plan, with the 2026 ACE Plan Appendix F detailing implementation steps.
rovincial goal to phase out coal-fired electricity generation by 2030, the federal 2 13 Reduction of Carbon Dioxide Emissions from Coal-fired Generation of Electricity Regulations 4 14 prescribe various regulations on coal generating units...
AI summary Nova Scotia aims to phase out coal-fired electricity by 2030, aligning with federal regulations and the Evergreen Integrated Resource Plan (IRP). The Clean Electricity Regulations (CER), effective 2035, support Canada’s net-zero goal by 2050 and align with Nova Scotia Power’s strategy to use emitting generation in peaking capacity.
2026 ACE Plan Appendix F Page 15 of 55 The Path to 2030 – 2025 Update Non-Confidential 1 IESO-NS to ensure the 2029 retirement dates will be met. 8 In accordance with the Board’s 2 directive, NS Power has provided an update on the transfer...
AI summary The document outlines the transition of responsibilities for fast-acting generation procurement from NS Power to IESO-NS, including a REOI for 300 MW capacity with a 2029 commercial operation date. Updates on accountability matrix changes and references to M12386 and M12303 are noted.
Agreement IR 762 – Minas In Progress In Progress Pending Dec 31, 2026 Highlands Wind 13 14 6.1.3.3 Renewable to Retail / Mersey River Wind Inc (IR 597 and IR 675) 15 16 The Renewable to Retail (RtR) electricity market was established in No...
AI summary The Renewable to Retail (RtR) electricity market in Nova Scotia, established in 2016, enables independent retailers to sell renewable energy directly to NS Power’s retail customers. The text references the Path to 2030 and the 2025 10 Year System Outlook, part of the 2026 ACE Plan Appendix F.
r new renewable energy sources and the Province was looking for a new procurement 2 administrator to lead this initiative. 31 3 4 6.2 Battery Storage & Renewable Integration Resources 5 6 The 2030 Clean Power Plan calls for deployments of...
AI summary The 2030 Clean Power Plan mandates grid-scale storage in Nova Scotia, with 150 MW of 4-hour storage approved in 2024. NS Power's BESS project (ECEI) includes updates on Bridgewater, Spider Lake, and White Rock Road sites, with commercial operations expected by late 2025 and mid-2026. The NSEB's decision (M11539) and interim report (M12494) are referenced.
14 to be determined by the IESO-NS. 15 32 S.N.S. 2023, c. 17. 33 Electricity Act Amendments Allow More Energy Storage Solutions - Government of Nova Scotia, Canada Page 28 of 55 Date: December 12, 2025 Page 681 of 782 REDACTED REDACTED (CO...
AI summary The text references the 2026 ACE Plan Appendix F and the 'Path to 2030 – 2025 Update,' indicating alignment with Nova Scotia's energy strategy updates. It cites legislative amendments (S.N.S. 2023, c. 17) and regulatory documents related to energy storage and electrification planning.
for new fast-acting generation capacity was also confirmed in the 26 Evergreen IRP analysis and it was included as part of Action Item #3c in the August 2023 update 27 to the IRP Action Plan and Roadmap, which points to a range of 600MW to...
AI summary The document confirms the need for new fast-acting generation capacity, as outlined in the Evergreen IRP analysis and included in Action Item #3c of the August 2023 IRP update. The required capacity ranges from 600MW to 900MW, emphasizing a significant increase in system firm generation capacity.
rged as a consistent outcome 26 across all 2023 Evergreen IRP scenarios. The value of this conversion is supported by the low 27 capital cost (these units already operate on HFO) and the ability for these units to operate in a 28 peaking c...
AI summary The analysis highlights the conversion of existing HFO-operating units to peaking capacity as a consistent outcome across 2023 Evergreen IRP scenarios, citing low capital costs and suitability for net peak demand periods. This aligns with the 2026 ACE Plan Appendix F.
Currently operating in Cold Reserve Lingan 3 2029 Converted to HFO operation (reliability resource) Lingan 4 2029 Converted to HFO operation (reliability resource) Trenton 5 2027 Trenton 6 2029 Point Aconi 2029 Point Tupper 2028 Converted...
AI summary The document outlines the operational status of several power plants, including conversions to HFO (Heavy Fuel Oil) and scheduled decommissioning dates. NS Power notes that retaining thermal units in cold reserve supports system reliability during commissioning and testing, as part of ongoing resource planning by IESO-NS.
1 7.0 ADDITIONAL IRP ACTION PLAN AND ROAD MAP ITEMS 2 3 In addition to the items identified in the 2030 Resource Development Plan, there are other elements 4 of the broader IRP Action Plan which have specific and significant impacts on res...
AI summary EfficiencyOne (E1) received $173.1M for its 2023-2025 DSM Plan, targeting 412.7 GWh energy efficiency savings and 17.9 MW demand response capacity. Legislative amendments expanded 'demand-side management' to include strategic electrification and established the Nova Scotia Energy Board, emphasizing alignment with 2030 decarbonization goals.
eation of a public report 24 25 NS Power is executing resource planning modeling in support of the study objectives. The current 26 estimated timeline for completion of the study is Q1 2026. 27 46 The Economics of Electrification in Nova S...
AI summary NS Power is conducting resource planning modeling for a study with a projected completion timeline of Q1 2026. The document references the 2026 ACE Plan Appendix F and mentions 'The Economics of Electrification in Nova Scotia' as context.
2026 ACE Plan Appendix F Page 44 of 55 The Path to 2030 – 2025 Update Non-Confidential 1 o Top up in hours when their self-supplied resources do not meet their firm load 2 requirements or, in some cases, when additional resources are requi...
AI summary The 2026 ACE Plan Appendix F discusses hydrogen development and offshore wind initiatives in Nova Scotia. It references the Province’s Green Hydrogen Action Plan (2023) and outlines offshore wind procurement goals (5 GW by 2033–2035). NS Power’s IRP Roadmap Item 11 assesses hydrogen tariff impacts on the Action Plan.
1 8.0 PROJECT ACCOUNTABILITIES, COORDINATION, AND RISK 2 MANAGEMENT 3 4 NS Power believes that the Nova Scotia 2030 Clean Power Plan is a comprehensive and 5 appropriate clean energy transition plan. It is based on extensive studies and st...
AI summary NS Power asserts the Nova Scotia 2030 Clean Power Plan is comprehensive, based on stakeholder engagement and studies. It outlines roles: Province manages renewable projects until 2030 RES targets, NS Power handles fuel conversions and transmission, and IESO-NS oversees battery storage and fast-acting generation.
6. Evolving Policy Landscape 26 • 2025 Trend: Reduced Risk 27 • The final CER was published on December 18, 2024 and is in alignment with NS 28 Power’s current long-term strategy as it supports the use of emitting generation in 29 a peakin...
AI summary The 2025 update outlines alignment of the Clean Electricity Regulations (CER) with NS Power's strategy, emphasizing peaking generation and electrification policy impacts. Policy changes through 2030 will involve NERC, NPCC, and provincial/federal electrification policies. NS Power will adapt via its IRP Roadmap.
n its ACE Plan 26 applications on the progress of its Five-Year Reliability Plan. 27 28 The Board directs NS Power to update the equivalent of Figure 3 in the 2025 ACE 29 Plan application about priority distribution feeders in the 2026 ACE...
AI summary NS Power is updating its Five-Year Reliability Plan in response to the Board's directive, focusing on progress in 2025, anticipated 2026 work, and plan revisions. The 2026 ACE Plan application is highlighted as requiring updates on priority distribution feeders.
2026 ACE Plan Appendix G Page 10 of 71 NS Power Five-Year Reliability Plan - Update Non-Confidential
AI summary The 2026 ACE Plan Appendix G outlines NS Power's Five-Year Reliability Plan update, focusing on infrastructure and operational strategies to ensure grid reliability. The document is marked as non-confidential and part of a broader regulatory proceeding.
n and ongoing in Service 2026 Restoration (FLISR) 1 Due to careful management of resources, vegetation management team was able to exceed the planned kms while 2 remaining within the $45 million overall budget. 3 This project is on track f...
AI summary NS Power's vegetation management team exceeded planned kilometers while staying within a $45M budget, with the project on track for 2026 completion. Early 2025 SAIDI performance reflects initial outcomes from the Five-Year Reliability Plan, though the plan remains in its early implementation phase.
rating under the DNR restrictions resulted in a safe, managed approach to working in forested 22 areas during the period of heightened wildfire risk but did result in a reduction in the number of Page 21 of 71 Date: December 12, 2025 Page...
AI summary NS Power's Five-Year Reliability Plan Update notes that DNR restrictions reduced vegetation management in 2025, with work reprioritized for 2026. This adjustment aligns with wildfire risk mitigation strategies but impacts the volume of managed vegetation, as illustrated in Figures 9 and 12.