Topic:"Infrastructure Planning" in M11764

Nova Scotia Utility and Review Board IN THE MATTER OF The Public Utilities Act, R.S.N.S. 1989, c.380, as amended 2024 10-Year System Outlook NS Power June 27, 2024 NON-CONFIDENTIAL 2024 10-Year System Outlook Non-Confidential

AI summary NS Power submitted a non-confidential 2024 10-Year System Outlook to the Nova Scotia Utility and Review Board under the Public Utilities Act. The document outlines long-term infrastructure and operational planning for the electricity system.

.................................................................................................... 20 15 3.2.5 Rate Base Procurement ...........................................................................................................

AI summary The document outlines sections covering rate base procurement, unit utilization forecasts, system impact studies, environmental regulatory requirements, and resource adequacy. Key themes include energy mix evolution, transmission service queues, renewable electricity mandates, and environmental policy updates.

..................... 41 27 6.0 Resource Adequacy ........................................................................................................... 44 28 6.1 Operating Reserve Criteria ...............................................

AI summary The document outlines sections related to resource adequacy, reserve criteria, and renewable energy capacity contributions in Nova Scotia's 2024 10-Year System Outlook, focusing on grid reliability, planning reserves, and renewable resource integration into the energy system.

Page 2 of 67 2024 10-Year System Outlook Non-Confidential

AI summary Page 2 of a 67-page non-confidential document titled '2024 10-Year System Outlook' is referenced, indicating the document discusses long-term system planning for Nova Scotia's energy sector.

1 7.0 Transmission Planning....................................................................................................... 51 2 7.1 System Description ...................................................................................

AI summary The document outlines transmission planning topics including system description, design criteria, bulk power system reviews, remedial action schemes, NPCC directory assessments, transmission life extension, interconnection requests, reliability ties, and specific studies like the Western Valley Transmission System Phase II and Hydrogen Load Impact Studies.

6 Figure 14: RES Compliance Forecast ......................................................................................................... 35 17 Figure 15: Multi-year Greenhouse Gas Emission Limits ........................................

AI summary The document outlines a 2024 10-year system outlook, including figures on RES compliance, greenhouse gas emission limits, and emission intensity standards. It emphasizes long-term planning for load and resource management, renewable energy integration, and environmental compliance under Nova Scotia's regulatory framework.

Page 4 of 67 2024 10-Year System Outlook Non-Confidential 1 1.0 INTRODUCTION 2 3 NS Power is committed to supporting both provincial and federal targets to reach 80 percent clean 4 energy and phasing out coal generation by 2030. Great stri...

AI summary NS Power outlines its 10-Year System Outlook, aligning with provincial/federal clean energy targets (80% renewable by 2030) and the Clean Power Plan. The report assesses generation capacity, load forecasts, and regulatory compliance under Nova Scotia's electricity market rules.

Page 5 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document header indicates 'Page 5 of 67' and presents the title '2024 10-Year System Outlook' with a 'Non-Confidential' designation. The content is limited to a page marker and title, suggesting it is part of a larger regulatory proceeding document related to long-term system planning.

sed behind-the-meter solar installations. The net result of these updates is a forecast 23 average annual net system requirement increase of 0.2 percent. 24 25 Figure 1: Net System Requirement with Future DSM Program Effects (actuals not w...

AI summary The text discusses the impact of behind-the-meter solar installations on Nova Scotia's net system requirements, forecasting a 0.2% annual increase. It references the Nova Scotia Power 2024 Load Forecast Report (M11689) and includes historical NSR data from 2014–2016, highlighting the role of demand-side management programs in shaping system growth projections.

Year NSR (GWh) Growth (%) 2017 10,873 0.6 2018 11,250 3.5 2019 11,077 -1.5 2020 10,723 -3.2 2021 10,902 1.7 2022 11,134 2.1 2023 11,131 0.0 2024F 11,490 3.2 2025F 11,409 -0.7 2026F 11,306 -0.9 2027F 11,347 0.4 2028F 11,416 0.6 2029F 11,448...

AI summary The document presents NSR (Net System Requirement) data from 2017 to 2034, showing fluctuating growth rates. NS Power forecasts peak demand using energy forecasts, weather models, and historical load factors, noting that customer growth, electrification, and EV adoption increase peaks, while DSM/DR activities reduce them. The 2022 Evergreen IRP's ELCC-adjusted DR contributions are included in firm peak calculations.

1 (higher temperature setpoints, more heating load served by the heat pumps), while in the long term 2 the peak forecast is reduced due to lower EV sales and adoption of hybrid heating scenario in 3 alignment with Nova Scotia’s Clean Power...

AI summary The document projects an average annual 1.4% increase in system peak demand due to factors like higher temperature setpoints and hybrid heating adoption, despite long-term reductions from lower EV sales. This aligns with Nova Scotia’s Clean Power Plan and NS Power’s Evergreen IRP, as illustrated in Figure 2 showing DSM program effects on peak demand.

Victoria Junction Light Fuel Oil 66 Total Combustion Turbine 231 Pre-2001 Renewables Independent Power Producers (IPPs) 25.7 Post-2001Renewables (firm) IPPs 64.3 NS Power wind (firm) Wind 14.5 Community-Feed-in-Tariff (firm) 8 7F IPPs 29.6...

AI summary The document corrects the Mersey system's firm capacity alignment with an ELCC adjustment, notes Annapolis out of service, Lingan Unit 2 in cold reserve until 2027, and specifies 18% firm capacity from ERIS/NRIS wind projects, referencing sections 3.1.2, 3.2.3, 3.2.4, and 6.3.

Winter Net Wholesale Market Participant Fuel Type Capacity 9 8F (MW) Backup Top-Up (BUTU) 10 9F Wind [Ellershouse] 1110F 4.2 Total 4.2 3 4 3.1.1 Maximum Unit Capacity Rating Adjustments 5 6 As a member of the Maritimes Area of the Northeas...

AI summary NS Power complies with NERC MOD-025-2 standards for generator capacity verification, referencing a NSUARB decision (M09940) using 18% ELCC for wind. The Ellershouse wind farm (owned by AREA) is part of the BUTU tariff, which includes municipal loads in specific communities. NS Power updates capacities annually in its 10-Year System Outlook.

3 The NS Power 2024 ACE Plan and Path to 2030 included sustaining capital investments in the 4 Mersey Hydro System (MHS) which will ensure safe and reliable water management throughout 5 the timeframe required to complete adequate prelimin...

AI summary NS Power's 2024 ACE Plan and Path to 2030 emphasizes sustaining investments in the Mersey Hydro System (MHS) regardless of redevelopment or decommissioning, citing economic benefits and contributions to renewable energy targets. The MHS provides 45.8 MW capacity and 220 GWh annually toward NS Power's goals, with updated reliability metrics reflecting its role in system planning.

Page 13 of 67 2024 10-Year System Outlook Non-Confidential 1 3.1.3 Wreck Cove Hydro 2 3 The Wreck Cove Hydro system is an important asset for NS Power, providing critical and 4 renewable generation for peak demand periods. With the ability...

AI summary The Wreck Cove Hydro system, NS Power's largest hydroelectric asset, is undergoing a Life Extension and Modernization (LEM) project to replace turbine runners, increasing annual generation by 5% to 315 GWh. However, Unit 2 will be unavailable for the 2024/2025 winter peak, returning ahead of the 2025/2026 period with 101 MW of firm capacity.

iding 101 MW of firm capacity. 18 This schedule is reflected in Figure 21 and further discussed in Section 6.4. 19 20 3.2 Changes in Capacity 21 22 3.2.1 Path to 2030 and Evergreen IRP 23 24 In October of 2023, the Province of Nova Scotia’...

AI summary Nova Scotia's 2030 Clean Power Plan aims to phase out coal and achieve 80% renewable generation by 2030, with NS Power submitting a report on implementation steps. The document also references a contingency and cost minimization report for Wreck Cove Life Extension and Modernization.

1 Province’s decarbonization goals. Resource additions and retirements out to 2030 are informed by 2 the details in these two documents. 3 4 For the purposes of the 2024 10-Year System Outlook Report, NS Power selected Evergreen IRP 5 scen...

AI summary NS Power is aligning its resource planning with the Province’s Clean Power Plan and The Path to 2030, using the Evergreen IRP scenario CE1-E1-R2 for the 2024 10-Year System Outlook Report. The scenario supports net-zero goals by 2035 and includes monitoring of emerging technologies such as hydrogen-fueled turbines and small modular reactors.

Page 15 of 67 2024 10-Year System Outlook Non-Confidential

AI summary This document provides a 10-year system outlook for 2024, focusing on the future of the electricity system in Nova Scotia. It outlines key considerations and planning assumptions for the next decade, including infrastructure needs and resource planning.

1 Figure 5: Firm Capacity Changes & DSM New Resources 2025-2034 Net MW DSM Peak reduction 241 Demand Response (Firm contribution) 15 14F 38 Total Demand Side MW Change Projected Over Planning Period 279 Maintenance/Repairs: Hydro derates d...

AI summary The document presents a summary of firm capacity changes and demand-side management (DSM) contributions from 2025 to 2034. It outlines reductions in peak demand through DSM initiatives, additions from new renewable energy sources, and maintenance/repair impacts, including the Wreck Cove LEM project.

S 17 Represents additional wind projects above and beyond the Rate Based Procurement Program or Green Choice Program from 2030-2034 in alignment with Evergreen IRP Scenario CE1-E1-R2. DATE FILED: June 27, 2024 Page 16 of 67 2024 10-Year Sy...

AI summary The document outlines additions and retirements in the 2024 10-Year System Outlook Resource Plan, including new wind and battery storage projects, with details on installed and firm capacities. These additions align with the Evergreen IRP Scenario CE1-E1-R2 and are part of NS Power's ongoing planning and adjustments.

MW • Firm capacity: 12 MW20 2033/2034 Wind – Future Procurements • Installed capacity: 200 MW • Firm capacity: 12 MW20 1 2 3.2.2 Brooklyn Power 3 4 Brooklyn Power owns a 24 MW firm dispatchable renewable energy biomass facility located in...

AI summary The document outlines the current status of various energy generation facilities, including Brooklyn Power's 24 MW biomass facility and Lingan Unit 2, which was placed in cold reserve in August 2022. Lingan Unit 2 was recalled multiple times during the 2023/2024 winter to support firm customer load. NS Power is maintaining existing thermal units in cold reserve to ensure planning reserve margin as new firm capacity resources are added to the system.

Page 19 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, providing a non-confidential overview of the future energy system planning and projections for Nova Scotia.

Page 22 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, providing a non-confidential overview of the power system's future planning and projections.

Page 24 of 67 2024 10-Year System Outlook Non-Confidential 1 Figure 9: Utilization Factor

AI summary The document presents a 10-year system outlook for 2024, focusing on the utilization factor as depicted in Figure 9. This figure is likely a key indicator for assessing system performance and planning for future energy needs.

Page 26 of 67 2024 10-Year System Outlook Non-Confidential

AI summary This document provides a 10-year system outlook for 2024, outlining key considerations and projections related to the electricity system in Nova Scotia. It includes planning assumptions and strategies for managing demand, supply, and resource needs over the coming decade.

Unit 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 TRE-5 L L L L - - - - - - - TRE-6 H H H H M L - - - - - TUC-1 M M L L L L UL UL UL UL UL TUC-2 H M M M M H H H M M H TUC-3 H H M H M H H H H H H TUC-4 H H H H H H H H H H H TUC-5...

AI summary The text discusses projected sustaining investments for various units, based on utilization forecasts and failure mechanisms. It highlights that NS Power does not account for unplanned failures in these estimates and explains how different asset classes are evaluated, with some prorated by utilization factor and others influenced by additional factors.

NRIS Executed 10 - T 598 13-May-21 Cumberland 2.52 2.52 37N Tidal 30-Jun-24 GIA NRIS Executed 30 The in-service dates listed reflect the milestone dates specified in the interconnection agreement with the Interconnection Customer associate...

AI summary The document outlines the NRIS (Network Resource Interconnection Service) with details such as execution dates, location, capacity, and interconnection agreements. It also references the 2024 10-Year System Outlook and includes information about interconnection requests, including in-service dates and statuses.

Executed 29 - D 700 21-Apr-23 Cape 0.56 0.56 82S- Solar 30-Sep-23 SIS N/A Breton 303 Complete 31 - T 686 23-Jan-23 Cumberland 340.00 340.00 L-8001 Wind 01-Dec-25 SIS in NRIS Progress 32 - D 711 05-Jul-23 Halifax 0.48 0.48 139H- Solar 31-Oc...

AI summary The text presents a list of projects with details such as queue numbers, request dates, counties, megawatts, and service types, including solar and wind projects, along with their statuses and service dates. It is part of a 10-Year System Outlook document filed on June 27, 2024.

Page 31 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document outlines the 2024 10-Year System Outlook, providing a non-confidential overview of the power system's future planning and projections.

take an assessment to 26 understand the impacts of the CER on the long-term strategy and IRP Action Plan, in accordance 27 with the Evergreen IRP Action Plan and Roadmap Update, Roadmap Item 5. 28 44 Update to CER: Canada Gazette, Part 1,...

AI summary NS Power is working with government to meet carbon reduction obligations while ensuring affordability and reliability of electricity supply. The Clean Electricity Regulations (CER) are being assessed for their impact on long-term strategy and the Integrated Resource Plan (IRP) Action Plan.

Page 43 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, a non-confidential report outlining the future energy system planning and projections for Nova Scotia.

rconnections with neighboring Planning Coordinator Areas, transmission 19 transfer capabilities, and capacity and/or load relief from available operating 20 procedures. 46 21 22 The PRM is a long-term planning assumption that is typically...

AI summary The document discusses the Planning Reserve Margin (PRM) as a long-term planning assumption, updated as part of the Integrated Resource Plan (IRP) process. NS Power confirmed a 20% PRM target as appropriate for long-term planning, which serves as a basis for minimum required firm generation to meet reliability criteria.

Page 45 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, a non-confidential report outlining the future energy system planning and projections for Nova Scotia.

Winter Annual Wind Cumulative Marginal ELCC % Firm Capacity Period Capacity Added Capacity of Wind Applied to New Wind Contribution from (MW) (MW) Capacity New Wind (MW) Pre 2024 611 2024/2025 0 611 48 UARB Decision Letter, Generation Util...

AI summary The document references a UARB decision letter and studies related to generation utilization, optimization, and capacity value, including a 2019 study by Energy+Environmental Economics. It also includes a 2024 10-Year System Outlook, highlighting planning and resource planning efforts.

Page 46 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, providing a non-confidential overview of the energy system's future direction and planning considerations for the next decade.

Page 47 of 67 2024 10-Year System Outlook Non-Confidential

AI summary This document outlines the 2024 10-Year System Outlook, providing a non-confidential overview of the electricity system's future planning and projections.

1 NS Power supports updating the capacity study prior to the next IRP analysis, with the focus of 2 the update being an examination of the interactive effect of the identified clean resources (wind, 3 solar, battery energy storage, and dem...

AI summary NS Power supports updating the capacity study prior to the next Integrated Resource Plan (IRP) analysis, focusing on the interactive effects of clean resources. Municipal load in certain areas is served by a wind farm not included in NS Power’s sourced wind generation. Due to increased firm peak demand and delays in the Wreck Cove LEM Project, NS Power will not meet the 20% PRM target for the 2024/2025 Winter period and will implement strategies like keeping Lingan 2 in cold reserve.

will implement the 25 following strategies: 26 • Lingan 2 will continue to be available in cold reserve, recallable to service as needed, as 27 discussed in Section 3.2.3. 50 NS Power 2024 Load Forecast, M11689, April 30, 2024 DATE FILED:...

AI summary NS Power will maintain Lingan 2 in cold reserve and explore near-term firm imports from Newfoundland via the Maritime Link. The document also outlines a 10-year load and resources outlook, showing projected firm peak loads and required reserves from 2024/2025 to 2033/2034.

2,71 2,720 2,718 2,739 2,767 2,833 2,876 2,925 2,982 3,051 C Required Capacity (A + B) 1 Existing Resources (NS Power 2,55 2,551 2,551 2,551 2,551 2,551 2,551 2,551 2,551 2,551 D and IPPs) 1 Existing Resources 4 4 4 4 4 4 4 4 4 4 (Wholesal...

AI summary The text presents a table outlining required capacity, existing resources, and various resource additions including biomass, hydro, tidal, and wind energy. It also includes procurement details for new wind and gas conversion projects.

150 O Conversion P Additions - New Gas CTs 300 300 Q Additions - Battery 72 24 49 36 Additions - Coal to HFO 459 R Operation S Diversity Credit 3 3 3 3 -298 -150 -781 T Retirements Total Annual Firm Additions -57 182 80 54 36 17 24 12 12 1...

AI summary The document presents a 10-year system outlook for NS Power, detailing cumulative firm additions and total firm capacity from the winter of 2024/2025 to 2033/2034. It includes data on new gas CTs, battery additions, and retirements, reflecting the evolution of the energy infrastructure over time.

Page 53 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, providing a non-confidential overview of the energy system's future performance and planning considerations.

the Directory 1 Working Group that is performing the review. 27 Voting by NPCC members on the updates proposed by the Directory 1 Working Group is 28 scheduled to conclude on June 27, 2024. 29 DATE FILED: June 27, 2024 Page 54 of 67 2024 1...

AI summary The NPCC Directory 7 Working Group is reviewing the design criteria and review process for Remedial Action Schemes (RAS), with the review expected to be completed in Q3 2024. NS Power is involved in the Directory 7 Working Group. NS Power also has a comprehensive maintenance program for the transmission system aimed at ensuring reliability and extending asset life.

g the integration of additional variable 27 renewable generation on the Nova Scotia system. The Reliability Tie is not anticipated to provide 28 incremental access to firm capacity or energy. 29 DATE FILED: June 27, 2024 Page 56 of 67 2024...

AI summary NS Power is developing the Reliability Tie with NB Power, targeting a 2028 in-service date, to support increased integration of variable renewable generation. This aligns with the 2020 IRP and the 2023 Evergreen IRP update. The Western Valley Transmission System – Phase II Study is underway to address transmission line capacity, clearance, and age issues over a 15-year planning horizon.

24 Page 57 of 67 2024 10-Year System Outlook Non-Confidential

AI summary This document presents the 2024 10-Year System Outlook, a non-confidential report outlining the long-term planning and forecasting for the electricity system in Nova Scotia.

1 A fifth and sixth option were subsequently added in 2021 and 2022 respectively to assess 2 bypassing the existing 69 kV infrastructure with either a single 138 kV circuit, or 138 kV double 3 circuit construction. 4 5 • Option #5 ‐ Bypass...

AI summary The document discusses the addition of two new infrastructure options in 2021 and 2022 for bypassing existing 69 kV lines with 138 kV circuits, as well as the expansion of a study to include electrification impacts. The study was paused due to other procurement studies but is expected to resume in Q4 2024. Additionally, hydrogen facilities are following interconnection procedures for connecting to the Nova Scotia transmission system, with significant renewable generation requests.

Page 58 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, a non-confidential report outlining the future direction and planning for the electricity system in Nova Scotia.

Page 59 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document outlines the 2024 10-Year System Outlook, providing a non-confidential overview of the power system's future planning and projections.

in local regions as there are some challenges with using 17 numerous IBR units to manage System Strength. This requirement will continue to be analyzed 18 as part of SIS and other grid studies. DATE FILED: June 27, 2024 Page 61 of 67 2024...

AI summary The document outlines the 2024 10-Year System Outlook, focusing on transmission development and the need for reinforcing the NS Power transmission system to ensure reliability and compliance with standards. Major projects are based on preliminary assessments and will be subject to further studies and approvals.

s 13 determined by NS Power, NPCC/NERC Reliability Standards, or the NSUARB. Items described 14 below are current as of the date of this report. 15 16 8.1 Impact of Proposed Load Facilities 17 18 There were several system upgrades required...

AI summary The document outlines the impact of proposed load facilities on the power system, including the construction of new substations and the installation of transformers to accommodate increased load demands. These projects are expected to be completed in 2024 and 2025.

Page 62 of 67 2024 10-Year System Outlook Non-Confidential

AI summary The document presents the 2024 10-Year System Outlook, providing a non-confidential overview of the energy system's future performance and planning considerations.

1 4. Installation of a new 25/33/42 MVA, 138 kV-25 kV substation on Susie Lake Crescent in 2 2024/25. NS Power is working with Nova Scotia Department of Public Works to acquire 3 their property for the 142H-Susie Lake substation site. 4 5....

AI summary The text discusses the installation of new substations and transformers in Nova Scotia, including the 25/33/42 MVA substation on Susie Lake Crescent and a 10 MVA transformer for a new mine site. It also covers the relocation of the 129H-Kearney Lake substation and transmission development plans for 2024, including the replacement of a mobile substation.

continues to advance 26 and replacement resources are identified, additional projects are anticipated to be identified. 27 28 2024 29 • 5P 25 MVA Mobile Substation Replacement (519754). DATE FILED: June 27, 2024 Page 63 of 67 2024 10-Year...

AI summary The document outlines the 2024 10-Year System Outlook, highlighting ongoing infrastructure projects such as the 5P 25 MVA Mobile Substation Replacement, and indicates that as replacement resources are identified, additional projects are anticipated.

Page 63 of 67 2024 10-Year System Outlook Non-Confidential 1 • Completion of 101W-Port Mersey Expansion in Q2 to include a new 138 kV-25 kV, 2 15/20/25 21 MVA transformer and two feeders (C0011261). 3 • 78W-Martins Brook substation relocat...

AI summary The document outlines a series of planned infrastructure projects for the Nova Scotia power grid from 2024 to 2026, including substation expansions, transformer replacements, and transmission line modifications to enhance system reliability and capacity.

7, 2024 Page 64 of 67 2024 10-Year System Outlook Non-Confidential 1 • Add a second 15/20/25 MVA 69 kV-12.5 kV transformer at 70W-High Street 2 (Bridgewater). Retire the 69 kV-4.16 kV transformer 70W-T51 and install a 2.5 MVA 12.5 3 kV-4.1...

AI summary The document outlines a series of infrastructure upgrades and replacements for the electrical grid in Nova Scotia from 2024 to 2034, including transformer replacements, substation installations, and future transmission planning as coal-fired generation is phased out and electrification advances.

beyond 2029, but NS Power anticipates that more projects will be identified as coal-fired 29 generation is phased out and electrification advances. NS Power has several transmission DATE FILED: June 27, 2024 Page 65 of 67 2024 10-Year Syst...

AI summary NS Power is preparing for future infrastructure needs beyond 2029, with several transmission and distribution planning studies underway. These studies aim to identify necessary upgrades, including transformer replacements and new feeder installations, which may lead to additional capital work reflected in future 10-Year System Outlook reports.

24 Page 66 of 67 2024 10-Year System Outlook Non-Confidential 1 9.0 CONCLUSION 2 3 Customers count on NS Power for energy to power every moment of every day, and for solutions 4 to power a sustainable tomorrow. Environmental legislation an...

AI summary The 2024 10-Year System Outlook highlights NS Power's commitment to sustainable energy solutions in response to environmental legislation and policy initiatives. It outlines the planning basis, including the Province’s Clean Power Plan, NS Power’s The Path to 2030, and the Evergreen IRP scenario CE1-E1-R2.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests NON-CONFIDENTIAL

AI summary The document is a redacted version of the 2024 10-Year System Outlook Report (NSUARB M11764), which includes NSPI's responses to Commission information requests. It outlines regulatory proceedings involving infrastructure planning and standardized filing processes.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) includes NSPI's responses to information requests from the NSUARB. The report addresses infrastructure planning and regulatory compliance, reflecting NSPI's obligations under Nova Scotia's energy regulations.

he resource 27 development plan to 2030 as described in the 2024 10-Year System Outlook. Resource 28 plans beyond 2030 will be informed by future IRPs, where continuing developments in 29 emerging technologies can be incorporated for consi...

AI summary The text references Nova Scotia Power's 2024 10-Year System Outlook and resource development plans through 2030, noting that future Integrated Resource Plans (IRPs) will incorporate emerging technologies. It cites the 2023 Evergreen IRP and a 2024 NSUARB report (M11764) as context for resource planning.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) includes NSPI's responses to information requests from the NSUARB. The report addresses infrastructure planning and regulatory compliance, reflecting NSPI's obligations under Nova Scotia's energy regulations.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests NON-CONFIDENTIAL 1 (d) Achieving Hybrid Peak scenario peak reductions are contingent on the completion of work 2 referenced in part (b). The compl...

AI summary NSPI states that achieving Hybrid Peak scenario reductions depends on completing a Hybrid Peak study. Current peak reductions rely on DR activities (including DLC, TVP, BNI curtailment), while customer growth and electrification increase peak demand. NS Power's resource plan includes DSM/DR programs and maintains a Planning Reserve Margin (PRM) to buffer uncertainties.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests CONFIDENTIAL (Attachment Only) 1 Request IR-3: 2 3 Re: Exh. N-1, p. 57 4 5 (a) Please explain what steps NS Power has taken to ensure that the civ...

AI summary NSPI responds to a request regarding the Reliability Tie project's civil construction timeline, mentioning geotechnical assessments and project activities to meet the 2028 in-service date. It also addresses equipment procurement status and risk mitigation for delays.

Reliability Tie sited route. 28 Date Filed: September 19, 2024 NSPI (CA) IR-3 Page 1 of 2 REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to CA Information Requests CONFIDENTIAL...

AI summary NSPI outlines risk mitigation strategies for the Reliability Tie Project, including site assessments, structural foundation development, and collaboration with experts. Purchase orders for high-voltage equipment for the Onslow substation were issued in spring 2024, with confirmed delivery dates aligned to the project schedule.

arrestors, and disconnects. 23 24 (c) Confirmed delivery dates for the high voltage equipment listed in part (b) above are within 25 the planned schedule and project in-service date. Date Filed: September 19, 2024 NSPI (CA) IR-3 Page 2 of...

AI summary The text references a 2024 10-Year System Outlook Report (NSUARB M11764) and NSPI's responses to information requests. It mentions confirmed delivery dates for high-voltage equipment aligning with project timelines, though most content is redacted due to confidentiality.

ed clean resources (wind, solar, battery 31 energy storage, and demand response). As a starting point for this work, NS Power will 32 develop a draft scope of work and project schedule to be circulated to IRP stakeholders for 33 comment by...

AI summary NS Power is developing 300 MW of new firm capacity for Winter 2027/2028, with studies on technology, supply chain, and grid integration progressing. A second 300 MW for 2029/2030 will follow a similar model. Environmental studies and permitting will continue into 2025. The Hybrid Peak mitigation program is referenced in another document.

NSPI (NSUARB) IR-2 Page 2 of 2 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL

AI summary NSPI provides responses to NSUARB's information requests regarding the 2024 10-Year System Outlook Report (NSUARB M11764), detailing infrastructure planning and regulatory compliance measures.

1 Request IR-3: 2 3 Figure 3 shows the Nova Scotia Block with a maximum rated capacity of 145.4 MW 4 during the winter peak period. In its response to Board IR-3 in Matter M11221, NS 5 Power stated that the NS Block includes the provision...

AI summary The document discusses NS Power's use of a 95% ELCC (Effective Load-Carrying Capacity) assumption for the Nova Scotia Block in its 10-Year System Outlook Report, contrasting with a 98% ELCC in prior studies. It requests updated data, continuation of the assumption, and examples of peak demand periods exceeding 145.4 MW. NS Power references recent reports from NSPML and ENL on system reliability but does not confirm new data acquisition.

REVISION 2 - REDACTED - 2024-08-26.PDF (pub.nl.ca) 2 From NLH - Q1 2024 Report on the Rolling 12 Month Asset Performance in Support of Resource Adequacy - 2024-04-30.PDF (pub.nl.ca) Date Filed: September 19, 2024 NSPI (NSUARB) IR-3 Page 2...

AI summary NSPI states it assumes reduced peak capacity from the NS Block, aligning with NLH's EqFOR value of 5% for the LIL. Historically, the full 153 MW NS Block was delivered during system peaks in the past three years, as per NSPI's response to NSUARB's information requests.

reproduce Figures 3 and 4 by adding an additional column to show nameplate 4 capacity for each line item. 5 6 Response IR-6: 7 8 Figure 3: 2024 Firm Generating Capacity for NS Power and IPPs 9 Winter Net Nameplate Plant/System Fuel Type Ca...

AI summary The text requests reproducing Figures 3 and 4 with an additional column showing nameplate capacity. Figure 3 lists 2024 firm generating capacity for NS Power and IPPs, including Winter Net Capacity and Nameplate Capacity (MW). The response is labeled as 'Response IR-6'.

150 150 Fuel Oil Coal/Pet Coke/Heavy Lingan 607 607 Fuel Oil Date Filed: September 19, 2024 NSPI (NSUARB) IR-6 Page 1 of 3 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL Wi...

AI summary The document includes a table from NSPI's 2024 10-Year System Outlook Report (NSUARB M11764), detailing plant capacities (e.g., Lingan with 607 MW nameplate capacity). It references NSPI's responses to NSUARB information requests, focusing on generation infrastructure and fuel types.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL 1 • Point Aconi retirement moved from Winter 2028/29 to 2029 and additional forecasted 2 running hours resulting in additiona...

AI summary NSPI's 2024 10-Year System Outlook Report highlights delayed retirements for Point Aconi and Trenton 6 power plants, increased long-term utilization at Tufts Cove, and a placeholder for Trenton 5 refurbishment, all contributing to higher sustaining capital costs due to extended operations and revised forecasts.

UARB) IR-7 Page 2 of 2 2024 10-Year System Outlook Report NSUARB IR-7 Attachment 1 Page 1 of 1

AI summary The document references a 2024 10-Year System Outlook Report submitted to the Nova Scotia Utility and Regulatory Board (NSUARB), indicating a focus on long-term infrastructure planning for the energy sector.

27/2028 - 2025 $940M 2 Stage 1 1F Fast Acting Gen - 300 2029/2030 - - - Stage 2 Gas Conversion 150 2028/2029 - - $39M 3, 4 (Point Tupper) 2F 3F HFO Operation - 459 2029/2030 - - $0.6M3,4 Lingan 1/3/4 14 1 N-12, UARB Approval Sheet, Nova Sc...

AI summary The document outlines capital expenditures for energy projects in Nova Scotia, including a Battery Energy Storage System (BESS) and gas conversion initiatives. It references the 2024 ACE Plan and Evergreen IRP assumptions, with costs estimated in 2022 dollars. NSPI seeks NSUARB approval for these projects, citing directional cost estimates.

1 Request IR-10: 2 3 Page 24 states that “NS Power created the concept of utilization factor (UF) for the purpose 4 of providing a directional understanding of the future use of each generating unit.” Please 5 identify any other electric u...

AI summary NS Power developed the utilization factor (UF) concept to forecast generating unit usage, considering factors like capacity factors, operating hours, and flexibility demands. This approach addresses challenges from integrating variable renewable resources, requiring more detailed planning beyond traditional capacity factors.

demands placed upon NS Power’s generating units given the planned 27 utilization. The UF for each unit is evaluated by considering the forecast capacity factor, annual 28 operating hours, unit starts, expected two-shifting, and a qualitati...

AI summary The text discusses evaluating the utilization factor (UF) for NS Power’s generating units by considering forecast capacity factors, operating hours, unit starts, two-shifting, and asset health to better reflect their value to the power system.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL 1 Request IR-11: 2 3 On pages 31-32, NS Power stated: “Each transmission SIS initiated for Study Group 32 or 4 beyond require...

AI summary NSPI responds to NSUARB's IR-11 request by listing transmission projects in Study Groups 32-35 and noting that EMT analysis determines equipment needs for integrating new generation resources. The response includes a table of 14 projects, with one marked as withdrawn.

NSPI (NSUARB) IR-13 Page 2 of 2 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL 1 Request IR-14: 2 3 In response to Board IR-11 in Matter M11221 regarding the Reliability Ti...

AI summary NSPI provided an update on the Reliability Tie project, stating that the Facilities Study for TSR 411 was completed in Q1 2024, with outputs integrated into ongoing engineering design. The project is expected to begin construction in 2025 and conclude in 2027, with a capital application expected to be filed with the NSUARB in Q3 2024.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL 1 Request IR-15: 2 3 On page 59, NS Power stated that in collaboration with Manitoba Hydro International 4 (MHI), it complete...

AI summary NSPI responded to an NSUARB information request by providing a report on the Large Scale Integration of Inverter Based Resources in Nova Scotia, which was previously filed under M11307. The report was reviewed in a webinar as part of NS Power’s IRP Action Plan.

erm and day ahead planning to maintain the SCMVA required for stable operation. The metric for the bullet above should capture the requirement for inertia with two 345kV tielines in service. • Until technology evolves such that all online...

AI summary The document discusses the need to maintain System Strength and Inertia in Nova Scotia's grid as renewable energy integration increases, emphasizing the importance of planning practices such as annual assessments of system inertia and strength, and the inclusion of factors like forced outages and maintenance in resource planning.

2024 10-Year System Outlook Report NSUARB IR-15 Attachment 1 Page 5 of 60 Frequency Control and System Strength Assessment • Document and publish updated model requirements for Load and Generation customers. o It is recommended that NSPI p...

AI summary The 2024 10-Year System Outlook Report recommends NSPI update model requirements for load and generation customers, conduct system studies for western Nova Scotia, maintain SCMVA levels, and develop methodologies to estimate system strength and inertia as IBR resources are added to the grid. These actions aim to ensure grid stability and reliability.

2024 10-Year System Outlook Report NSUARB IR-15 Attachment 1 Page 7 of 60 Frequency Control and System Strength Assessment

AI summary The document is an attachment to the 2024 10-Year System Outlook Report, focusing on Frequency Control and System Strength Assessment as part of the Integrated Resource Plan (IR-15) submitted to the Nova Scotia Utility and Regulatory Board (NSUARB).

2024 10-Year System Outlook Report NSUARB IR-15 Attachment 1 Page 8 of 60 Frequency Control and System Strength Assessment

AI summary The 2024 10-Year System Outlook Report, attached to the NSUARB IR-15, includes an assessment of frequency control and system strength, providing insights into the reliability and stability of the power system over the next decade.

ge Ride-Through Time Duration Curve .................................... 29 Figure 6: Maritime Link Frequency Response ............................................................................ 41 ix 2024 10-Year System Outlook Report NS...

AI summary This document outlines planning criteria and recommendations for integrating large-scale Inverter Based Resources (IBRs), such as wind generation and grid-scale battery projects, into the power system. It highlights the increasing penetration of renewable energy and the technical challenges that must be addressed through careful planning and mitigation measures.

ent and to support the addition of additional IBR facilities. The performance of many of these existing facilities in a high IBR grid is well below that expected of newly connected facilities. • Perform incremental studies for each wave of...

AI summary The text discusses the need for incremental grid studies as IBR facilities are added to the NSPI grid, highlighting the limitations of current planning metrics and the need for updated system operating guidelines. It also recommends optimal placement of grid support mechanisms as synchronous plants are retired and suggests updating IBR and inertia constraints for modelling.

endations to facilitate current and future economic generation dispatch for increased renewables on the timelines in place for Nova Scotia: • Update IBR and inertia constraints for Plexos modelling. • Adequate frequency response is highly...

AI summary The document discusses the need to update inertia and frequency response constraints in Nova Scotia's grid planning to accommodate increased renewable energy. It emphasizes the importance of frequency response reserves (FFR) and synthetic inertia resources (SIR) as alternatives to traditional inertia, and highlights the need for a sliding scale for inertia/FFR based on system load. It also mentions the ongoing requirement for system strength metrics in resource planning.

line. At the present time, studies indicate that there is no hard limit on IBR penetration and dispatch if there is adequate frequency and System Strength support online. 7.2.3 Good Planning Practice Recommendations to implement good plann...

AI summary The text discusses planning practices for integrating renewables in Nova Scotia, emphasizing the need for annual assessments of system inertia and strength, updated model requirements for load and generation, and system studies for load growth and hydro availability. It also highlights the importance of maintaining SCMVA levels and addressing potential grid disconnections due to low system strength.

1 Request IR-18: 2 3 On page 9, NS Power notes that its long-term peak forecast is reduced in part due to the 4 "adoption of hybrid heating scenario in alignment with Nova Scotia's Clean Power Plan and 5 NS Power's Evergreen IRP." Please e...

AI summary NS Power notes that its long-term peak forecast reduction is partly due to the adoption of a hybrid heating scenario aligned with the Clean Power Plan and the Evergreen IRP. The hybrid scenario's impact on system peak is detailed in a table from the 2024 Load Forecast Report, showing reductions starting in 2026. However, a breakdown by fuel type is not available.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) includes NSPI's responses to SBA information requests, with the document marked as non-confidential. The report likely addresses long-term infrastructure planning and regulatory compliance matters.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) includes NSPI's responses to SBA information requests, with the document marked as non-confidential. The report likely addresses long-term infrastructure planning and regulatory compliance matters.

1,585 2,623 11,477 2,518 108 105 2033F 11,605 2,670 11,552 2,573 53 97 2034F 11,695 2,727 11,710 2,642 -15 85 17 18 (b) In the 10-Year System Outlook report, no changes in resource build out were assumed from 19 those previously identified...

AI summary NS Power's 10-Year System Outlook Report indicates that without new resource additions, the planning reserve margin (PRM) will drop below the 20% target in the final winter periods. NS Power cites uncertainty at the planning horizon's end and will refine resource needs in future reports and Integrated Resource Plans.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) includes NSPI's responses to SBA information requests, with the document marked as non-confidential. The report likely addresses long-term infrastructure planning and regulatory compliance matters.

1 Request IR-2: 2 3 Refer to the Report Section 3.2.1 - Path to 2030 and Evergreen IRP, Figure 6, Page 17 of 67. 4 There are multiple discrepancies between the timing and capacity volume of resource 5 additions in this table and the expect...

AI summary The document highlights discrepancies between NSPI’s Path to 2030 Report and the 10-Year System Outlook in resource timing and capacity. NSPI reconciles differences by explaining project completion timelines versus winter availability periods, affirming 2030 targets remain on track with stakeholder collaboration.

of 4 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL

AI summary The 2024 10-Year System Outlook Report (NSUARB M11764) involves NSPI's responses to information requests by the SBA. The report pertains to Nova Scotia's energy system planning and regulatory compliance.

Path to 2030 2024 10 YSO Project Reconciliation Capacity (MW) Year Capacity (MW) Winter projects have been delayed and are expected to be to be online and available for the Winter 2026/2027 period. It is assumed that the capacity and energ...

AI summary The 2024 YSO Project's capacity is delayed until Winter 2026/2027. The withdrawn RBP project's capacity was reallocated to the Green Choice Program, increasing its maximum nameplate capacity from 350 MW to 416 MW by 2028/2029.

Green Choice Program from 350 MW to 416 MW. The PHP Wind project has been delayed and is now Port Hawkesbury 168 2025 168 2026/2027 expected to be online and Paper Wind available for the Winter 2026/2027 period. 150 2024 90 2025/2026 The u...

AI summary The text outlines updates to renewable energy projects in Nova Scotia, including delays and capacity changes for PHP Wind, Paper Wind, and Renewable to Retail Wind. Forecasts for these projects have been revised, with some delayed to 2026/2027 and reduced capacities compared to the original Path to 2030 document.

Path to 2030 document. 25 2026/2027 The forecast was updated for the 10-Year System 25 2027/2028 Outlook with the 25 2028/2029 maximum capacity of the program (100 MW). As of the writing of the report, Community the first solar gardens Sol...

AI summary The 2024 10-Year System Outlook Report updates the Community Solar Program's capacity to 100 MW, with 25 MW annual potential. Solar gardens under the program are expected online by spring 2026. The document, filed by NSPI (SBA) as NSUARB M11764, outlines program development timelines and capacity projections.

4 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL

AI summary NSPI submitted responses to SBA information requests regarding the 2024 10-Year System Outlook Report, part of NSUARB proceeding M11764. The report outlines NSPI's long-term system planning and resource strategies.

, no projects under Provincial Section Provincial 4D have come forward. Section 4D NS Power estimates the 150 2026 150 2027/2028 Energy Storage earliest online date for any Projects new projects to be available for the Winter 2027/2028 per...

AI summary NS Power reports no projects under Provincial Section 4D have advanced, with energy storage projects under Section 4B estimated to be online by Winter 2029/2030. Timelines for Section 4D projects remain unchanged, with no new developments reported.

estimated timeline for this Fast Acting Gen - project. The project is 300 2027 300 2027/2028 Stage 1 expected to be online for the Winter 2027/2028 period. There are no changes to estimated timeline for this Fast Acting Gen - project. The...

AI summary The text outlines project timelines for two Fast Acting Generation stages (2027/2028 and 2029/2030) and a Gas Conversion project (2028/2029), emphasizing no changes to estimated schedules. It also mentions HFO Operation with a 45-unit capacity.

period. HFO Operation - There are no changes to 459 2029 459 2029/2030 Lingan 1/3/4 estimated timeline for this Date Filed: September 19, 2024 NSPI (SBA) IR-2 Page 3 of 4 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to...

AI summary The document references NSPI's responses to SBA information requests regarding the 2024 10-Year System Outlook Report (NSUARB M11764). It notes a project expected to be operational for Winter 2029/2030 and mentions no changes to the HFO Operation timeline. Lingan 1/3/4 capacity details are provided without modifications.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL 1 Request IR-4: 2 3 Refer to the Report Section 5.3 - Anticipated Policy Changes – Clean Electricity Regulations. 4 On p. 42 of...

AI summary NSPI responds to SBA's query about Clean Electricity Regulations (CER) impacts, referencing the Evergreen IRP's inclusion of a 50g/GWh emissions performance standard. NSPI states this standard was applied across all 2035 net-zero scenarios in their planning assumptions.

included in all of the CE1 Evergreen IRP scenarios (net zero 2035), the results of which 25 can be accessed on the Evergreen IRP website and have informed the long-term strategy. 26 Date Filed: September 19, 2024 NSPI (SBA) IR-4 Page 1 of...

AI summary NSPI references the Evergreen IRP scenarios (net zero 2035) as part of its long-term strategy, informed by the 2024 10-Year System Outlook Report (NSUARB M11764) and responses to SBA information requests. The scenarios are publicly accessible via the Evergreen IRP website.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL 1 Item 5 of the Evergreen IRP Roadmap indicates that NS Power will track the ongoing 2 development of the CER and monitor for ch...

AI summary NSPI states it will monitor Clean Electricity Regulations (CER) developments beyond the Evergreen IRP's current modeling. It emphasizes the importance of emitting resources for grid reliability, citing stakeholder feedback and the 2035 CER implementation timeline. NSPI anticipates CER will align with peaking generation needs, referencing Tufts Cove unit forecasts.

he Tufts Cove units. In addition, the CER comes into effect in 2035, 18 which shows a decrease in gas generation in 2035 relative to 2034 in Evergreen IRP 19 Scenario CE1-E1-R2. 1 2023 Evergreen Integrated Resource Plan - Updated Action Pl...

AI summary The Clean Electricity Regulations (CER) are set to take effect in 2035, leading to reduced gas generation in the 2023 Evergreen Integrated Resource Plan (IRP) Scenario CE1-E1-R2. The text references the 2024 10-Year System Outlook Report (M11764) and the Evergreen IRP (M11307), highlighting regulatory and planning developments.

NSPI (SBA) IR-5 Page 1 of 3 2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SBA Information Requests NON-CONFIDENTIAL 1 Response IR-5: 2 3 (a) This assumption is based on NS Power’s engagement to date with multiple pro...

AI summary NSPI responds to SBA information requests regarding the 2024 10-Year System Outlook Report, noting ongoing engagement with hydrogen developers, confidentiality of preliminary load/resource data, and alignment with the 2023 Evergreen IRP's hydrogen monitoring roadmap. Commercial confidentiality restrictions limit sharing of detailed customer load assessments.

ective projects. Both EverWind 20 Fuels and Bear Head Energy have public websites with periodic updates on the status and 21 future plans for their proposed developments. 3 2F 22 23 (e) There is no publicly available information related to...

AI summary The document discusses the Evergreen Integrated Resource Plan (IRP) and the 2024 10-Year System Outlook Report, noting that while public impact assessments are confidential, the IRP included a hydrogen load scenario. This scenario indicated increased resource needs (wind, solar, gas) and higher emissions over the modeling period.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to NSUARB Information Requests NON-CONFIDENTIAL 1 Request IR-6: 2 3 Refer to the Report Section 7.8 - EMT Studies to Support Wind Integration, page 59 of 67, 4 where it stat...

AI summary NSPI responds to NSUARB's IR-6 request, stating that conclusions about inverter-based resources (IBRs) do not affect the need for the Reliability Tie, which reduces reliance on synchronous condensers. IRP planning constraints may evolve with higher IBR adoption, depending on project locations and stability requirements.

2024 10-Year System Outlook Report (NSUARB M11764) NSPI Responses to SWEB Information Requests NON-CONFIDENTIAL 1 Request IR-2: 2 3 Based on publicly available sources, several awarded RBP projects will achieve commercial 4 operation later...

AI summary NSPI attributes delays in RBP project interconnections to global supply chain issues. To address this, NSPI highlights the use of Engineering & Procurement (E&P) agreements under the GIP, allowing early procurement of long-lead equipment for Green Choice projects to avoid similar delays.

urement RFP timelines (established 19 by the Green Choice procurement administrator) 1 and therefore be available for Winter 2028/2029, 0F 20 demonstrating alignment between the 2024 10-Year System Outlook and the Green Choice RFP. 21 At t...

AI summary NSPI confirms alignment between the 2024 10-Year System Outlook and Green Choice RFP timelines, with no anticipated delays in Commercial Operation Dates (COD). Project CODs depend on interconnection design and Network Upgrade requirements per NSUARB-approved Generator Interconnection Procedures (GIP). General connection timelines cannot be guaranteed due to GIP compliance requirements.

Upgrades associated with their project. In this way, any Network Upgrades that may also be needed 24 for lower queued projects can be built regardless of the in-service date for the original generating 25 facility. 26 27 Section 17 of the...

AI summary The text outlines Section 17 of the GIA, which allows non-compliant projects to be placed into Default if milestones are missed, with a 30-day cure period. It also references NSPI's responses to SWEB's information requests regarding the 2024 10-Year System Outlook Report (NSUARB M11764).

Nova Scotia Utility and Review Board IN THE MATTER OF The Public Utilities Act, R.S.N.S. 1989, c.380, as amended M11764 2024 10-Year System Outlook Report NS Power Rebuttal Evidence October 21, 2024 NON-CONFIDENTIAL 2024 10-Year System Out...

AI summary NS Power submits a rebuttal to the 2024 10-Year System Outlook Report as part of a regulatory proceeding under the Public Utilities Act. The document outlines NS Power's response to the Board's review of system planning and resource requirements, focusing on infrastructure and reliability considerations.

.................................................... 14 13 4.0 CONCLUSION .................................................................................................................. 16 DATE FILED: October 21, 2024 Page 2 of 16 2024...

AI summary This document presents the 2024 10-Year System Outlook Report's rebuttal evidence, filed on October 21, 2024. It addresses system planning and regulatory considerations for Nova Scotia's energy sector over the next decade, though specific technical details are not provided in the excerpt.

Page 2 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential

AI summary The document is a non-confidential rebuttal submission titled '2024 10-Year System Outlook Report,' though no substantive content or arguments are visible in the provided text. The page number and title are the only elements present.

1 1.0 INTRODUCTION 2 3 On June 27, 2024, Nova Scotia Power Incorporated (NS Power, Company) submitted its 10-Year 4 System Outlook Report (Report) to the Nova Scotia Utility and Review Board (NSUARB, Board). 5 By Hearing Order on July 26,...

AI summary NS Power submitted a 10-Year System Outlook Report to the NSUARB, prompting stakeholder interventions. The SBA noted the report's consistency with prior planning documents (Evergreen IRP, Path to 2030) but highlighted discrepancies, such as reduced wind capacity from Rate Base Procurement (306 MW vs. 373 MW). NS Power responded to IRs, with SBA and CA submissions leading to this rebuttal.

2030 report but is now only expected 26 to deliver 306 MW of new capacity. NSPI provided a full summary of the 27 differences in the resource forecasts. The discrepancies are relatively minor, and do 28 not necessarily impact the ability o...

AI summary The 2030 report's projected capacity has been revised downward to 306 MW, with NSPI explaining minor discrepancies in resource forecasts that do not hinder its ability to meet service obligations. A Small Business Advocate submission references this in the context of M11764.

1 Nevertheless, the SBA summarized four issues “for additional consideration by NSPI and the 2 Board”, noting that “these risks do not require immediate changes to the System Outlook”. They 3 are as follows. 4 5 2.1 Delays in Resource Deve...

AI summary The SBA highlights risks from delays in resource development and increased load growth, noting these do not require immediate changes to the System Outlook. NSPI asserts project timelines remain on track for 2030, with updates reported annually. The SBA emphasizes the need for timely supply planning adjustments due to updated load forecasts.

growth, 30 and NSPI should continue to assess the impact of load trends on supply planning to 31 ensure that any needed modifications are incorporated in a timely manner to allow 2 Small Business Advocate submission, Re: M11764 - Nova Scot...

AI summary The Small Business Advocate (SBA) emphasizes that Nova Scotia Power Inc. (NSPI) must continuously assess load trends' impact on supply planning to ensure timely modifications. This is part of the SBA's rebuttal evidence in M11764 regarding NSPI's 2024 10-Year System Outlook Report.

1 least-cost planning and robust stakeholder engagement in the decision-making 2 process. 4 3 4 NS Power provides its Load Forecast on an annual basis in April of each year, and that Load 5 Forecast is used in the development of that year’...

AI summary NS Power's Load Forecast and 10-Year System Outlook are subject to NSUARB hearings. The SBA highlights risks from Environment and Climate Change Canada's Clean Electricity Regulations (CER), which may allow continued use of emitting generators in peaking capacity. NSPI relies on emitting resources despite potential regulatory changes, posing risks if final regulations are less permissive.

Page 5 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential

AI summary The document is a non-confidential rebuttal evidence submission for the 2024 10-Year System Outlook Report, addressing Nova Scotia Power's integrated resource planning and system reliability projections. It focuses on regulatory challenges and stakeholder responses to long-term energy system planning.

1 Given the content in the update published by ECCC on February 16, 2024, including changes being 2 considered by ECCC to give provinces, utilities and other electricity regulators and providers more 3 flexibility, and given that ECCC has...

AI summary NS Power assesses low risk that final regulations will restrict emitting resources in peaking capacity, citing ECCC's 2024 flexibility framework. The SBA highlights a potential reserve margin deficiency below 20% by 2031, urging NSPI to update stakeholders on resource adequacy and address uncertainties from non-NSPI programs like Renewable to Retail.

m Outlook reports and Integrated Resource Plans, as needed.” 8 In this way, the Company 26 may develop and report on any applicable associated mitigating strategies as any potential issues 27 arise in the period beyond 2030. 7 Small Busine...

AI summary The Small Business Advocate (SBA) submitted comments on NSPI's 2024 10-Year System Outlook Report, emphasizing the need for mitigating strategies to address potential issues beyond 2030. The report highlights the company's obligation to develop and report on such strategies as part of its integrated resource planning process.

Page 6 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential 1 3.0 CONSUMER ADVOCATE EVIDENCE 2 3 In its submission, the CA raised three issues “to bring… to the Board’s attention”. 9 They are as 4 follows. 5 6 3.1...

AI summary The Consumer Advocate (CA) highlights delays in the Evergreen IRP's progress, specifically the hybrid peak scenario study and regional joint dispatch study, urging the Board to direct NS Power on their development. NS Power responds that hybrid peak scenarios are under study, though implementation timelines remain unclear.

nario, as well as regarding its engagement on regional joint dispatch”. 12 25 26 NS Power’s response to CA IR-2 provided, in part, the following regarding the study of hybrid 27 peak scenarios: 28 9 Consumer Advocate submission, Re: M11764...

AI summary NS Power responded to the Consumer Advocate's submission (CA IR-2) regarding hybrid peak scenario studies in its 10-Year System Outlook Report. The document references submissions related to matter M11764 and includes a rebuttal evidence filing dated October 21, 2024.

1 (b) As part of its 2020 IRP Action Plan, NS Power completed and published 2 The Economics of Electrification in Nova Scotia. This report identified the 3 potential for a Hybrid Peak scenario in Nova Scotia and developed an 4 estimate of...

AI summary NS Power's 2020 IRP Action Plan included a report on electrification, identifying the Hybrid Peak scenario's potential for peak and energy savings. The scenario was modeled in the 2023 Evergreen IRP, showing cost savings. The Province incorporated it into the Clean Power Plan, with NS Power aligning in the 2024 ACE Plan. Net Zero Atlantic plans a study on Hybrid Peak as part of the Load Management initiative.

22 of the Load Management initiative of the Clean Power Plan. 23 24 (c) Net Zero Atlantic has confirmed that they plan to initiate a study to examine 25 Hybrid Peak options in the fall of 2024 on behalf of the Department of 26 Natural Reso...

AI summary NS Power reports collaboration with Net Zero Atlantic on a study of Hybrid Peak options for Nova Scotia's energy system, involving EfficiencyOne and fossil fuel heating stakeholders. The study aligns with the provincial Clean Power Plan and NS Power’s Path to 2030, requiring no immediate NSUARB direction. The Consumer Advocate provided a 2024 10-Year System Outlook Report (M11764) as evidence.

of the ECEI and Section 4D battery storage projects into a single 150 MW project 23 application represents a reduction in anticipated energy storage projects through 2029”. 19 24 The Path to 2030 provided the following: 25 16 NS Power Lett...

AI summary The document discusses the consolidation of ECEI and Section 4D battery storage projects into a single 150 MW initiative, noting a reduction in anticipated energy storage projects through 2029. It references the 2024 10-Year System Outlook Report and includes submissions from the Consumer Advocate and NS Power regarding regional dispatch optimization and system outlook.

Page 10 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential

AI summary This document is the rebuttal evidence for the 2024 10-Year System Outlook Report, focusing on system planning and regulatory considerations. The content is non-confidential and part of a regulatory proceeding.

1 In addition to NS Power’s 150 MW ECEI BESS project (described below), NS 2 Power anticipates that up to an additional 150 MW may be designated by the 3 Province under Section 4D in the near term (anticipated in Q2-2024 with an in- 4 serv...

AI summary NS Power's 150 MW BESS project, along with additional 150 MW under Section 4D and 100 MW under Section 4B of the Electricity Act, aims to reach 400 MW of battery storage by 2030, as mandated by provincial regulations. The Province retains prerogative to procure under both sections.

ncial Section 4B projects for a total of 400 MW of 4-hour battery storage capacity by 25 2030. Likewise, Figure 6: Additions and Retirements as in the 10-Year System Outlook Resource 26 Plan in the Report shows the same expected battery ca...

AI summary NS Power projects 400 MW of 4-hour battery storage by 2030, citing the 10-Year System Outlook Report. The Consumer Advocate (CA) highlights Reliability Tie risks, referencing prior proceedings (M11458, M11539). NS Power states no updates to battery capacity plans.

Page 11 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential

AI summary The document is a rebuttal to the 2024 10-Year System Outlook Report, likely addressing energy generation, grid reliability, or resource planning. Specific details are not provided in the text snippet.

1 For the most part, the Consumer Advocate does not have many concerns regarding 2 NS Power’s efforts to plan for risks during the construction of the Reliability Tie. 3 That being said, we do wish to note the following: 4 5 • According to...

AI summary The Consumer Advocate (CA) acknowledges NS Power's risk planning for the Reliability Tie but highlights two concerns: absence of contingency plans for supply delays and potential icing-related reliability issues mirroring existing 345 kV line outages. The CA urges NS Power to develop operating guidelines to handle dual-outage events during icing periods.

to ask the Board to consider obtaining “assurances from NS Power that it has or 26 will soon develop operating guidelines that ensure its system can ride through a dual-outage event 27 during periods with icing of both the L-8001 and the R...

AI summary The Consumer Advocate requests the Board to require NS Power to develop guidelines ensuring system resilience during dual-outage events on the L-8001 and Reliability Tie transmission lines. NS Power reports purchase orders for high-voltage equipment upgrades at the Onslow substation were issued in spring 2024.

1 (c) Confirmed delivery dates for the high voltage equipment listed in part (b) 2 above are within the planned schedule and project in-service date. 24 3 4 To elaborate, risks associated with potential delays in any supplies or equipment...

AI summary The document confirms delivery timelines for high-voltage equipment on the Reliability Tie project, citing risk mitigation strategies like dedicated procurement teams, vendor reviews, and advanced material planning. Icing risks are addressed through climate studies, design optimizations, and historical data analysis, particularly in the Mt. Higgins area.

ce Accretion Study was completed, further refining the design, 26 particularly in the Mt. Higgins area, where historical NS Power experience indicated higher 27 ice accumulation than the rest of the line, to ensure tailored reinforcement t...

AI summary NS Power conducted an Accretion Study to address ice accumulation risks on transmission lines, particularly in the Mt. Higgins area, and plans to install Dynamic Line Rating (DLR) devices on the L8006 intertie for real-time icing monitoring, as detailed in the 2024 10-Year System Outlook Report (M11764).

ed by the CA to assess any potential impacts to the IRP Roadmap. 18 Updates will be provided via the IRP Action Plan and Roadmap process. No further Board 19 direction is required at this time. 26 Consumer Advocate submission, Re: M11764 -...

AI summary The Consumer Advocate (CA) will assess impacts on the Integrated Resource Plan (IRP) Roadmap. Updates will be provided through the IRP Action Plan and Roadmap process, with no further Board direction required. The submission references Matter M11764 and a document link.

Page 15 of 16 2024 10-Year System Outlook Report – Rebuttal Evidence Non-Confidential 1 4.0 CONCLUSION 2 3 The SBA closes its submission with a general comment regarding the transition from the Nova 4 Scotia Power System Operator (NSPSO) t...

AI summary The Small Business Advocate (SBA) raises concerns about the transition from the Nova Scotia Power System Operator (NSPSO) to the Nova Scotia Independent Energy System Operator (NSIESO) and the potential impact on system planning and reliability. NS Power acknowledges the transition and agrees on the need for clarity and transparency, committing to continue providing the 10-Year System Outlook report until further direction is provided by the NSUARB.

January 16, 2025 [email protected] Mark Peachey Manager, Regulatory System Planning & Innovation Nova Scotia Power Inc. 1223 Lower Water Street Halifax, NS B3J 3S8 Dear Mr. Peachey: M11764 – Nova Scotia Power Inc. – 2024 10-Year Syst...

AI summary Nova Scotia Power Inc. (NS Power) submitted its 2024 10-Year System Outlook Report, addressing transmission planning, demand-side management (DSM) programs, generation planning, and compliance with environmental and renewable energy requirements. The report is based on load forecasts, DSM forecasts, and regulatory compliance needs. The Board notes the report is informational, not a regulatory decision.

to 2030 report. The System Outlook presents a reasonable forecast of loads and resources to meet system needs in the near- term, considering known policies and constraints. … There are a few areas in which the System Outlook highlights pot...

AI summary The System Outlook report identifies four key risks to NSPI's planning: delays in resource development, load growth, peaking plant regulations, and reserve margin deficiency post-2031. NS Power argues that updated Clean Energy Regulations reduce risks for emitting resources in peaking capacity. The CA submission raises concerns about Evergreen IRP progress, reliability tie risks, and geothermal resources.

electricity resources for the Province for the short, medium and long terms; and • conduct independent planning for energy resources, demand-side management and transmission. As the Board noted in its decision letter about the Evergreen IR...

AI summary The Board emphasizes NS Power's responsibility to continue integrated resource planning (IRP) and demand-side management for 2030 targets, stressing uninterrupted engagement with government agencies and avoiding delays despite potential NSIESO transition. The Evergreen IRP process must proceed without interruption.

July 31st, 2024 NOVA SCOTIA UTILITY AND REVIEW BOARD To whom it may concern, RE: 2024 10 Year System Outlook Report (M11764) – Notice of Intervention Please accept this letter as Notice of Intervention regarding the above Matter. Additiona...

AI summary SWEB intervenes in Matter M11764 regarding the 2024 10-Year System Outlook Report and requests inclusion of specific personnel in correspondence. The notice highlights SWEB's interest in participating in discussions about Nova Scotia's electricity system future.

Matter: M11764 NOVA SCOTIA UTILITY AND REVIEW BOARD IN THE MATTER OF: The Public Utilities Act, RSNS 1989, c.380, as amended - and - IN THE MATTER OF: NSUARB Matter No. M11764 – 10-Year System Outlook Report -2024 NOTICE OF INTERVENTION OF...

AI summary Eastward Energy Incorporated intervenes in Matter M11764, a proceeding under the Public Utilities Act related to the 10-Year System Outlook Report. The company seeks to address issues concerning its natural gas distribution services in Nova Scotia.

support the integration of the new generation resource.” 30 31 a) Please identify the projects in Figure 12 which are in Study Group 32 or beyond. 32 b) Please provide a brief narrative regarding the findings of the EMT analyses related to...

AI summary The text contains a regulatory request (IR-12) asking to identify projects in Study Group 32 or beyond and to explain findings from EMT analyses regarding additional equipment requirements, focusing on integration of new generation resources.

Transmission Planning analysis is ongoing with the next study report 27 anticipated by Q1 2024. 28 (b) The Company plans to submit a Class 1 Environmental Assessment Application with 29 NS Environment and Climate Change in Q4 2023. 30 (c)...

AI summary Transmission planning for the project is ongoing, with the next study report expected by Q1 2024. A Class 1 Environmental Assessment Application will be submitted to NS Environment and Climate Change in Q4 2023. Detailed design is set to begin in Q4 2023, with construction anticipated to start in 2025 and finish in 2027. Negotiations with NB Power on an intertie agreement are ongoing, and a capital application for the Reliability Tie is planned for Q3 2024.

1 M11764 2 3 NOVA SCOTIA UTILITY AND REVIEW BOARD 4 5 6 IN THE MATTER OF: The PUBLIC UTILITIES ACT 7 8 9 IN THE MATTER OF: NOVA SCOTIA POWER INCORPORATED’s 2024 10-Year 10 System Outlook Report 11 12 13 INFORMATION REQUESTS 14 15 16 17 To:...

AI summary The Consumer Advocate requests information from Nova Scotia Power Inc. regarding their 2024 10-Year System Outlook Report under the Public Utilities Act, with responses due by September 19, 2024.

Date Filed: August 28, 2024 CA (NS Power) Page 2 of 4 1 c) Please provide details on participation in any studies in partnership with other 2 organizations, including any available timelines, study scopes, contractors, or other 3 pertinent...

AI summary The document contains regulatory questions directed at NS Power regarding studies with partners, action plans for peak reduction, risk mitigation for customer behavior, and details on the Reliability Tie project's construction timelines, equipment procurement, and risk management. Focus areas include infrastructure planning, demand-side management, and regulatory compliance.

to part (b) that has does not have a firm delivery 29 date consistent with the target in-service date of 2028, please describe NS Power’s risk 30 mitigation plan for late delivery. 31 32 Request IR-4: 33 34 Re: Exh. N-1, p. 19. 35 36 a) Pl...

AI summary The document contains regulatory requests directed at NS Power, including inquiries about risk mitigation for project delays, cost breakdowns from Lingan Unit 2 recalls, and infrastructure reliability data for a 345 kV transmission line. Requests also address planning reserve margins and outage history.

August 28 2024 NOVA SCOTIA UTILITY AND REVIEW BOARD To whom it may concern, RE: 2024 10 Year System Outlook Report (M11764) – Information Requests Please see SWEB Development’s Information Requests to be directed to Nova Scotia Power regar...

AI summary SWEB Development requests Nova Scotia Power (NSP) to explain high dropout rates in the Rate Base Procurement and address delays in RBP projects due to transmission system connection issues. They also inquire about plans to prevent similar problems during the Green Choice procurement.

y planning to ensure that any needed modifications are incorporated in a timely manner to allow least- cost planning and robust stakeholder engagement in the decision-making process. • Peaking plant regulations. One of the significant poli...

AI summary NSPI's long-term resource plan faces risks due to proposed changes in ECCC's Clean Electricity Regulations (CER), which may allow continued use of emitting generators in peaking capacity. NSPI currently relies on these proposed changes and has not considered alternatives without emitting generation, posing risks if final regulations differ or additional rules are enacted.

uncertainty associated with assessing periods at the end of the planning horizon .") resources may lead to uncertainty regarding the responsible party to identify replacement capacity. The risks highlighted above represent areas which the...

AI summary The SBA highlights uncertainties in NSPI's long-term resource planning, including unclear replacement capacity responsibilities and potential changes in system planning roles with the establishment of NSIESO and NSEB. It urges clarity and transparency during transitions in system planning obligations.

integration of additional variable renewable generation on the Nova Scotia system. The Reliability Tie is not anticipated to provide incremental access to firm capacity or energy. 1 Exhibit N-2, The Path to 2030, Matter No. M11458, p. 20,...

AI summary NS Power is developing the Reliability Tie with NB Power to enhance renewable integration and regional interconnections, targeting 2028. The Consumer Advocate notes NS Power's lack of contingency plans for equipment delays despite confirmed delivery dates.

otia Power has not included delays in any supplies or equipment on its risk register, and thus has no clear contingency plan for any such delays that may occur. o In addition, there have been four sustained unplanned outages for the existi...

AI summary NS Power faces risks from transmission line outages due to icing and lacks contingency plans for supply delays. The 345 kV line between NS Power and NB Power has had multiple unplanned outages, raising concerns about reliability. NS Power also monitors emerging geothermal and nuclear technologies but has not actively pursued them.

January 16, 2025 [email protected] Mark Peachey Manager, Regulatory System Planning & Innovation Nova Scotia Power Inc. 1223 Lower Water Street Halifax, NS B3J 3S8 Dear Mr. Peachey: M11764 – Nova Scotia Power Inc. – 2024 10-Year Syst...

AI summary Nova Scotia Power Inc. submitted its 2024 10-Year System Outlook Report, required under wholesale electricity market rules. The report addresses transmission planning, DSM programs, generation planning, and compliance requirements. The Board notes the report is informational, based on best available data at the time of filing.

h the Board’s 2023 ACE Plan Decision (M11017), NS Power filed The Path to 2030 report, providing detailed and specific information on how the Company will achieve its 2030 obligations. NS Power stated that Evergreen IRP scenario CE1-E1-R2,...

AI summary NS Power's 2030 obligations are outlined in The Path to 2030 report, using the Evergreen IRP scenario CE1-E1-R2 and the 2030 Clean Power Plan. The 2024 10-Year SO Report incorporates this scenario, which assumes no Atlantic Loop and includes a 345 kV intertie (Reliability Tie) by 2028. The SBA affirmed the System Outlook's alignment with planning processes and known policies.

to 2030 report. The System Outlook presents a reasonable forecast of loads and resources to meet system needs in the near- term, considering known policies and constraints. … There are a few areas in which the System Outlook highlights pot...

AI summary The System Outlook report identifies risks to NSPI's planning, including delays in resource development, load growth, peaking plant regulations, and reserve margin deficiencies post-2030. NS Power argues that ECCC's 2024 regulatory updates reduce risks for emitting resources in peaking capacity. The Clean Energy Regulations (2024) offer compliance flexibilities. The CA submission raises concerns about IRP progress, reliability tie risks, and geothermal resources.

electricity resources for the Province for the short, medium and long terms; and • conduct independent planning for energy resources, demand-side management and transmission. As the Board noted in its decision letter about the Evergreen IR...

AI summary The Board emphasizes NS Power's responsibility to continue energy resource planning, demand-side management, and transmission activities until the NSIESO assumes these roles. It highlights the urgency of meeting 2030 targets with significant capital projects and the need for NS Power to engage with government agencies on policy developments.