Topic:"Energy Storage" in M12451

2026-2027 GRA Direct Evidence Appendix 1A Page 2 of 7 REDACTED (CONFIDENTIAL INFORMATION REMOVED) OP-01 NS Power / Emera Regulated Annual Reports Attachment 1 – NS Power 2024 Q3 MD&A Attachment 2 – NS Power 2024 Financial Statements Attach...

AI summary This document lists various attachments and evidence submitted as part of the 2026-2027 GRA Direct Evidence Appendix 1A. It includes financial reports, organizational charts, benchmarking studies, asset listings, maintenance schedules, fuel specifications, IPP contracts, reliability statistics, and presentations by analysts and bondholders.

5. Cost of Service Study and Line Loss Study Stakeholder Engagement The Board's directive is found at para. 367 of the 2023-2024 GRA Decision: The Board concurs that the COSS and Line Loss Study should be updated to reflect a number of dev...

AI summary The Nova Scotia Energy Board (NSEB) mandates updates to NS Power's Cost of Service Study (COSS) and Line Loss Study to reflect system changes since 2013, including renewable integration, gas generation, and grid storage. The Board requires semi-annual progress reports starting January 31, 2024, and a review of cost allocation methodologies.

• Costs directly applied: - o Third Party Fuel Handling, Transportation (e.g movement between Long Term Dead Storage/Bear head and plants) and Maintenance related to Coal Piles - o Storage fees (e.g. lease, handling fees, facility fees) -...

AI summary The text lists direct costs associated with coal operations, including fuel handling, storage, environmental compliance, rail car maintenance, international pier operations, and ash hauling. These costs are categorized under operational and compliance expenses related to coal management and transportation.

Costs directly applied: - o Third Party Fuel Handling, Transportation (e.g movement between Long Term Dead Storage/Bear head and plants) and Maintenance related to Coal Piles - o Storage fees (e.g. lease, handling fees, facility fees) - o...

AI summary The document outlines specific costs directly applied, including third-party fuel handling, storage fees, environmental compliance fees, rail car costs, international pier operations, and ash hauling expenses. These costs are categorized under operational and maintenance activities related to coal, storage, emissions, and transportation.

e is forecast to increase by $5.2 million to $131.3 million in 2026, as seen in the graph below. Figure 7A-8: Energy Delivery 2025 Budget vs. 2026 Forecast ($ Million) - Regional Operations increases by $4.5 million primarily due to additi...

AI summary Energy Delivery expenses are forecast to rise to $131.3 million in 2026 due to increased staffing, Grid Scale Battery costs, and NSIESO transition impacts. The 2027 forecast aligns with 2026 levels. Regional Operations and Control Centre expenses increase from staffing and operational demands, partially offset by NSIESO-related workforce reductions.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026-2027 GRA Direct Evidence Appendix 7B Page 1 of 2 2024 Compliance 2024 Compliance Restated TOTAL CORPORATE GROUPS 95,631 - 26 2 - 262 95,897 Head Office 3.56 3.561 Thermal Plants 42,75 42,752...

AI summary The document presents a compliance report for 2024, detailing financial and operational data across various corporate groups and departments, including energy production, asset management, and environmental services. The data includes figures for head office, thermal plants, renewable energy sources, and other operational segments, with some entries showing discrepancies or restatements.

VI-5 361.00 STRUCTURES AND IMPROVEMENTS 55 - R3 (5) 2,418,694 750,104 1,789,525 40,916 1.69 43.7 362.00 STATION EQUIPMENT 55 - R1.5 (5) 74,535,144 64,521,947 13,739,954 501,585 0.67 27.4 362.10 SCADA EQUIPMENT 15 - S2.5 (5) 473,094 475,824...

AI summary The text presents a table with various line items related to structures, station equipment, and energy storage equipment, including costs, revenues, and other financial metrics. The table includes entries for SCADA equipment, remote monitoring equipment, and energy storage equipment for EV chargers, with associated costs and revenues.

T - EV CHARGERS 15 - S3 0 987,094 158,436 828,658 71,330 7.23 11.6 363.20 ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR 25 - S3 0 1,123,202 64,625 1,058,577 48,536 4.32 21.8 363.30 ENERGY STORAGE EQUIPMENT - BATTERIES 10 - S3 0 1,261,438 20...

AI summary The text presents a table with various categories of energy-related equipment and infrastructure, including EV chargers, energy storage equipment, poles, towers, overhead conductors, underground conduit, and underground conductors. It lists quantities, costs, and other metrics for each category.

REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2026-2027 GRA Direct Evidence Appendix 8A Page 100 of 297 ACCOUNT 362.30 STATION EQUIPMENT - MISCELLANEOUS NOVA SCOTIA POWER, INC. SMOOTH SURVIVOR CURVE _ VII-40 Nova Scotia Power Inc. December 3...

AI summary The document contains financial account details related to Nova Scotia Power Inc., specifically accounts for station equipment and energy storage equipment, including EV chargers and distributed solar, as of December 31, 2023.

7 GRA Direct Evidence Appendix 8A Page 102 of 297 ACCOUNT 363.20 ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR NOVA SCOTIA POWER, INC. SMOOTH SURVIVOR CURVE _ VII-42 Nova Scotia Power Inc. December 31, 2023 REDACTED (CONFIDENTIAL INFORMATIO...

AI summary The text contains pages from a regulatory proceeding document related to Nova Scotia Power, Inc., including sections on energy storage equipment and infrastructure assets such as poles and towers. The content includes survivor curves and financial data, though much of it is redacted as confidential.

tock, Avon 2 Penstock, MacDonald Dam, MacDonald Pond Dam, Falls Lake Dam, Zwicker Lake Dam, Card Lake Main Dam, Card Lake Wing Dam, South Canoe Dam, one pipeline and associated reservoirs. Detailed explanations and associated methodologies...

AI summary The text outlines the Avon Hydro System's infrastructure, including dams, reservoirs, and pipelines, and references a 2018 Hydro Asset Archaeology Study that informs costings for archaeological assessments. Table 3 summarizes the costs for various asset locations, including reconnaissance, shovel testing, excavation, and monitoring.

required to supplement the detailed testing program to reduce uncertainties and inform risk. Estimate $50,000 for the HHERA. No change from 2020; therefore, apply inflation factor. 125 Phase 5 - Implementation of Decommissioning and Clean-...

AI summary The text discusses the implementation of decommissioning and clean-up plans, including the preparation of specifications and tender documents, contractor selection, and cost estimates. It mentions the need for worker safety and health monitoring, though air monitoring is not anticipated during the TRMC remediation due to minimal activities.

ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR 25 - S3 0 1,123,202 64,625 1,058,577 48,536 4.32 21.8 ENERGY STORAGE EQUIPMENT - BATTERIES 10 - S3 0 1,261,438 201,460 1,059,978 141,434 11.21 7.5 POLES, TOWERS AND FIXTURES 43 - R2 (35) 646,990...

AI summary The document presents a detailed breakdown of various energy storage and infrastructure-related costs, including distributed solar, batteries, poles, towers, conductors, and meters. It includes financial figures such as costs, revenues, and percentages for each category, providing a comprehensive overview of expenditures and returns.

1 1.0 INTRODUCTION 2 3 In the Nova Scotia Energy Board's (NSEB, Board) decision on Nova Scotia Power Inc's NS - 4 Power, Company) general rate application (GRA), dated February 2, 2023, the Board approved a - 5 settlement agreement requiri...

AI summary The Nova Scotia Energy Board (NSEB) mandated Nova Scotia Power Inc. (NS Power) to update its Cost of Service Study (COSS) by December 31, 2025, reflecting developments like renewable integration and grid-scale storage. NS Power submitted the application after stakeholder collaboration, with unresolved issues identified despite extensive input from advocates and industry groups.

23 5.6 Treatment of Battery in the COSS 24 - 25 NS Power is in the process of building battery storage that is presently functionalized to 26 transmission. However, it was identified that most participating stakeholders were of the view th...

AI summary NS Power proposes functionalizing battery storage to generation, but stakeholders argue it should serve transmission. The discussion centers on classifying battery assets within the Cost of Service Study (COSS), impacting cost recovery and resource categorization.

Cost of Service Study Redacted the COSS design should provide for battery sub-functions within each service area of generation, transmission and distribution. Battery storage units would then be looked at on a case-by-case basis and their...

AI summary The text discusses the design of the Cost of Service Study (COSS) and the need to align transmission rates between the OATT and COSS frameworks. It highlights methodological differences in how transmission costs are calculated and classified in these two systems, leading to inequities in customer pricing and inefficient market design.

2026-2027 GRA Direct Evidence Appendix 12A(1) Page 1 of 46 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Exhibit Reference Cells Modification values for PHP 5. Classify grid Input Tab Rows 39, 40, 566 Batteries CWIP separated scale storage b...

AI summary The document outlines modifications to exhibits in the 2026-2027 GRA Direct Evidence Appendix 12A(1), focusing on classifying grid-scale storage by ELCC and revising calculations to include batteries. It also involves adjustments to EHV/HV volumes and allocation factors for batteries.

- table. 4 Intermediate Generation Unit Net Book Value Current Classification New Classification Tufts Cove 1 $16.5M 46.3% Energy 5.3% Energy 53.7% Demand 94.7% Demand 46.3% Energy 18.4% Energy Tufts Cove 2 $28.8M 53.7% Demand 81.6% Demand...

AI summary The table shows changes in the classification of intermediate generation units at Tufts Cove from energy to demand, with significant shifts in percentages and net book values. The average classification also reflects a notable change from demand to energy.

14 COSS Model Run #5, Classify Grid Scale Storage by ELCC Factor: - 15 Grid Scale Storage is not yet operational and is fully CWIP in 2023 so there are no operating and - 16 maintenance expenses or depreciation functionalized to batteries....

AI summary Grid Scale Storage is not yet operational and is fully CWIP in 2023, resulting in no operating or maintenance expenses or depreciation being functionalized to batteries. Only Interest, Return (Profit/Loss), and Corporate Taxes are functionalized to batteries, with a 62% ELCC provided in CA DR-22.

CONFIDENTIAL • 1 Exh 7 C30:E30 Adjust BUTU revenues with output of BCF file Enter missing allocation values Exh 8a Column K for PHP Batteries CWIP separated from 5. Classify grid scale Innut Tob Rows 39, 40, Transmission Plant CWIP & stora...

AI summary The text outlines various adjustments and classifications related to grid-scale storage, specifically focusing on the inclusion of batteries in transmission plant calculations and the revision of allocation factors. It includes references to exhibits and rows in spreadsheets that need updates, such as adding a 'Batteries' subfunction and revising HV/EHV calculations to account for batteries.

1 Request for COSS Model Runs: Run # NSP Position Model Run Description 1 Yes NSP's positions in aggregate. This model includes the changes from model runs #2-5 below. 2 Yes New Intermediate Generation sub-function classified to demand and...

AI summary The document outlines various model run requests related to the Cost of Service Study (COSS) for Nova Scotia Power (NSP), including classifications for generation, transmission, and storage, as well as adjustments to fuel costs and rate classes.

CONFIDENTIAL Exhibit Reference Cells Modification BCF File – Data Inputs Rows 46, 77, 92, 100, 118, 127 Move volumes to ATL Input Data D217, D231:D239, D312:E322, D337:D345, D374:D377, D399:F399, D487:F487, D522, D534 Update values with ou...

AI summary The document details various modifications and updates to data inputs and exhibits, including moving volumes to ATL, updating values with outputs from the BCF file, and classifying grid-scale storage by ELCC. It also involves adding subfunctions for batteries and revising calculations to account for battery inclusion.

NON-CONFIDENTIAL 1 Request DR-7: 2 3 Please provide NS Power's estimated cost for a benchmark greenfield battery storage unit 4 providing capacity and energy arbitrage services, and excluding upgrade costs for grid 5 forming, black start,...

AI summary NS Power provided an estimated cost of a greenfield battery storage unit, using a benchmark of $1,632 per kW in 2022, which has since increased to $2,356 CAD per kW in 2022 dollars. NS Power also estimated interconnection costs at $93 per kW in 2024 dollars, with all other costs attributed to generation plant.

COSS CA DR-9 Attachment 1 Page 45 of 627 Start Time End Time ANL_MW 5/9/2019 9:00 5/9/2019 10:00 5/9/2019 10:00 5/9/2019 11:00 883.2 889.2 5/9/2019 11:00 5/9/2019 12:00 880.5 5/9/2019 12:00 5/9/2019 13:00 874.0 5/9/2019 13:00 5/9/2019 14:0...

AI summary The document provides a table of apparent energy load (ANL_MW) data recorded over multiple time intervals on May 9th to May 12th, 2019. This data appears to be related to energy usage and may be used for analysis in a regulatory proceeding.

COSS CA DR-9 Attachment 1 Page 274 of 627 Start Time End Time ANL_MW 3/7/2021 6:00 3/7/2021 7:00 1431.0 3/7/2021 7:00 3/7/2021 8:00 3/7/2021 8:00 3/7/2021 9:00 1483.1 1507.1 3/7/2021 9:00 3/7/2021 10:00 1470.2 3/7/2021 10:00 3/7/2021 11:00...

AI summary This document presents a table of energy demand data for a specific period, showing the start and end times along with corresponding ANL_MW values. The data spans multiple days in March 2021 and appears to be part of a regulatory proceeding related to energy usage and planning.

COSS CA DR-9 Attachment 1 Page 293 of 627 Start Time End Time ANL_MW 5/1/2021 17:00 5/1/2021 18:00 857.7 5/1/2021 18:00 5/1/2021 19:00 850.8 5/1/2021 19:00 5/1/2021 20:00 906.1 5/1/2021 20:00 5/1/2021 21:00 973.8 5/1/2021 21:00 5/1/2021 22...

AI summary The text provides a table of time-stamped data showing megawatt (MW) values for a specific period, likely related to energy generation or consumption. The data spans from May 1, 2021, to May 3, 2021, with timestamps and corresponding ANL_MW values, indicating potential usage or capacity metrics.

COSS CA DR-9 Attachment 1 Page 345 of 627 Start Time End Time ANL_MW 9/30/2021 9:00 9/30/2021 10:00 1085.5 9/30/2021 10:00 9/30/2021 11:00 1130.3 9/30/2021 11:00 9/30/2021 12:00 1154.3 9/30/2021 12:00 9/30/2021 13:00 1148.3 9/30/2021 13:00...

AI summary The document presents a table with timestamps and corresponding ANL_MW values, likely representing energy demand or generation data over a specific period in October 2021. The data appears to be part of a regulatory proceeding related to energy management and system performance.

COSS CA DR-9 Attachment 1 Page 471 of 627 Start Time End Time ANL_MW 10/2/2022 21:00 10/2/2022 22:00 10/2/2022 22:00 10/2/2022 23:00 981.0 947.1 10/2/2022 23:00 10/3/2022 0:00 884.2 10/3/2022 0:00 10/3/2022 1:00 843.5 10/3/2022 1:00 10/3/2...

AI summary This document presents a table of ANL_MW (Apparent Net Load in megawatts) values recorded over multiple time intervals from October 2nd to October 5th, 2022. The data appears to be related to electricity demand or generation during specific hours, possibly for analysis or regulatory purposes.

COSS CA DR-9 Attachment 1 Page 489 of 627 11/24/2022 8:00 11/24/2022 9:00 1457.7 11/24/2022 9:00 11/24/2022 10:00 1395.7 11/24/2022 10:00 11/24/2022 11:00 1296.9 11/24/2022 11:00 11/24/2022 12:00 1263.3 11/24/2022 12:00 11/24/2022 13:00 12...

AI summary The text presents a series of timestamps and numerical values, likely representing energy usage or system performance metrics over a 24-hour period on November 24 and 25, 2022. These data points may be used for analysis related to grid operations, load management, or system performance.

COSS CA DR-9 Attachment 1 Page 552 of 627 Start Time End Time ANL_MW 5/27/2023 3:00 5/27/2023 4:00 5/27/2023 4:00 5/27/2023 5:00 777.3 792.4 5/27/2023 5:00 5/27/2023 6:00 768.0 5/27/2023 6:00 5/27/2023 7:00 740.0 5/27/2023 7:00 5/27/2023 8...

AI summary The text presents a table showing energy demand (in ANL_MW) for specific time intervals on May 27, 28, and 29, 2023. The data appears to be part of a regulatory proceeding and includes partially confidential information.

Cost of Service Study Process (NSUARB M11475) NSPI Responses to CA Data Requests 1 Request DR-22: 2 3 Regarding the units proposed in the Battery Energy Storage Application (M11539) 4 5 (a) Please identify all material differences between...

AI summary NSPI is responding to data requests regarding the Battery Energy Storage Application (M11539), focusing on differences between the proposed units and those analyzed by E3, including technical specifications and operational intent. The response highlights key variables impacting ELCC calculations, such as maximum storage capacity and forced outage rate.

NON-CONFIDENTIAL 1 The assumptions for maximum storage capacity (150 MW) and storage duration capability 2 (4 hours), are the same in the E3 study and NS Power proposed units in the BES 3 application. The roundtrip efficiency for the propo...

AI summary The document discusses assumptions and specifications for battery energy storage systems (BESS) including maximum storage capacity, efficiency, and ELCC values. It also addresses the reactive power requirements for BESS and how they differ from synchronous machines, emphasizing the need for voltage regulation and grid support.

1 Request DR-1: 2 - 3 Tabulated hourly charging and discharging profile for all Battery Energy Storage (BESS) - 4 (i.e., including behind-the-meter) on the day of the winter peak demand in 2030. Please also - 5 include hourly imports and e...

AI summary Request DR-1 asks for a tabulated hourly charging and discharging profile for all Battery Energy Storage (BESS), including behind-the-meter, on the day of the winter peak demand in 2030, along with hourly imports and exports on that day.

7 Response DR-1: 8 9 Please refer to the below table for the BESS charging and discharging profile during the day of 10 peak demand, for the year 2030, from the scenario CE1-E1-R2 in the 2022 Evergreen IRP. In this 11 scenario the total BE...

AI summary The document references a BESS (Battery Energy Storage System) charging and discharging profile during peak demand in 2030 from the 2022 Evergreen IRP scenario CE1-E1-R2. It notes that the total BESS nameplate capacity is 140 MW / 560 MWh, and highlights that behind-the-meter BESS and exports from Nova Scotia were not modelled in the IRP.

1 Request DR-2: 2 - 3 Tabulated hourly charging and discharging profile for all Battery Energy Storage (BESS) - 4 (i.e., including behind-the-meter) for the summer day with the lowest diurnal wind power - 5 generation in 2030. Please also...

AI summary The response to Request DR-2 provides a table outlining the hourly charging and discharging profile of Battery Energy Storage Systems (BESS) for a summer day with the lowest diurnal wind power in 2030. It also includes hourly imports and exports, though behind-the-meter BESS and exports from Nova Scotia were not modeled in the 2022 Evergreen IRP.

COSS IG DR-2 Attachment 1 Page 2 of 4 2024 Actuals (GWh) Jan-24 Feb-24 Mar-24 Apr-24 May-24 Jun-24 Jul-24 Aug-24 Sep-24 Oct-24 Nov-24 Dec-24 Total Other Imports 42.4 59.0 75.5 176.9 Battery 0.0 0.0 0.0 0.0 Total 1248.4 1130.7 1055.0 3434.1...

AI summary The document presents data on energy generation and imports for 2024 and a forecast for 2030, highlighting contributions from various energy sources, including thermal generation and battery storage.

18 Technology Average Operating Hours per Year (2025 to 2050) Min Operating Hours in a Year (2025 to 2050) Max Operating Hours in a year (2025 to 2050) Coal to HFO 45 0 273 Coal to Gas – Point Tupper 233 100 862 Solar PV (tracking) ~3600 C...

AI summary The table presents operating hour statistics for various energy technologies from 2025 to 2050, including coal-to-HFO, coal-to-gas, solar PV, combustion turbines, wind, and Li-ion batteries. These data reflect average, minimum, and maximum annual operating hours for each technology.

NON-CONFIDENTIAL 1 Request DR-8: 2 3 Please indicate all types and MWs of new generation other than wind and solar that NS 4 Power expects to be added to its system between 2025-2030 and between 2030-2035 other 5 than referred to in the re...

AI summary NS Power does not expect new generation other than wind and solar between 2025-2030, except for 300-400 MW of energy storage and fuel conversions. Storage should be classified based on ELCC, and some generation costs may be reclassified to energy. Beyond 2030, the Evergreen IRP includes additional wind and fast-acting generation in certain scenarios.

Sector Evolution - Sector evolution has been characterized as the "Four Ds" - Decentralization - Decarbonization - Democratization - Digitization - The commonly identified specific drivers of change include: - Increasedelectrification of t...

AI summary The sector evolution is described through the 'Four Ds'—Decentralization, Decarbonization, Democratization, and Digitization. Key drivers of change include increased electrification, non-dispatchable renewable generation, demand-side management, and energy storage.

Evergreen IRP - Assumptions - 2030 targets(80% RES, coal phase out) base case - Federal Carbon Pricing - Fuel availability and pricing - Capital and operating cost assumptions - Load profile and electrification assumptions - Renewable inte...

AI summary The document outlines key assumptions for the Evergreen Integrated Resource Plan (IRP), including 2030 renewable energy targets, federal carbon pricing, fuel availability, capital and operating costs, load profiles, electrification, renewable integration, import potential, and emerging technologies such as SMRs and hydrogen.

Common Themes and Action Plan - There are significant common elements across the 24 scenarios modeled: - Regular, structured renewable generation additions to achieve i dentified wind/solar capacity buildout. - Near-term investments in ene...

AI summary The text outlines common elements across 24 modeled scenarios, including renewable generation additions, energy storage and transmission investments, firm capacity resources, and fuel conversions at existing NS Power sites. It emphasizes the need for a collaborative 2030 Resource Development Plan based on the Integrated Resource Plan (IRP) analysis to achieve system reliability and meet 2030 goals.

Evergreen IRP Outcomes: Action Plan Action Plan Item Focus Plan to 2030/COSS Areas of Interest 1: Regional Integration Regional integration strategy: access to firm capacity and improve system reliability Reliability Tie (2028) 2: Electrif...

AI summary The Evergreen Integrated Resource Plan (IRP) Action Plan outlines key initiatives for 2030, including regional integration, electrification, thermal retirement, and demand response strategies. It emphasizes improving system reliability, evaluating electrification's role, progressing thermal plant retirements, and expanding demand response programming to 75MW by 2025.

Path to 2030 Report Resource Plan Nameplate Anticipated COD Nameplate Anticipated COD Capacity (MW) (Year) Capacity (MW) (Year) Wind & Solar Resources Fuel Conversions at Existing Units Rate Base Procurement 373 2025 Gas Conversion – Point...

AI summary The Path to 2030 Report outlines the Resource Plan, detailing various renewable energy projects, energy storage initiatives, and fuel conversion plans, with capacities and anticipated completion dates provided in a table format. The plan includes wind and solar resources, fuel conversions at existing units, and load management initiatives.

- Key stakeholders include the Government of Nova Scotia, Independent Power Producers (IPPs), EfficiencyOne(E1), Mi'kmaw Partners, and NS Power. 2030 Project Accountability Key Partners Wind/Solar NS Government IPP's Battery Storage NS Gov...

AI summary The document outlines key stakeholders and their involvement in various 2030 projects related to energy in Nova Scotia, including the Government of Nova Scotia, Independent Power Producers (IPPs), EfficiencyOne (E1), Mi'kmaw Partners, and NS Power. Projects include wind/solar, battery storage, grid stability, hybrid peak/load management, reliability tie, fast acting generation, and fuel conversions.

Areas of Interest to COSS BESS - NS Power has a capital application before the board for the procurement of 3 x 50 MW/200MWh transmission connected batteries. - o Bridgewater (Municipality of the Town of Bridgewater - o Spider Lake (Halifa...

AI summary NS Power is seeking approval from the board for the procurement of three battery storage systems, each with a capacity of 50 MW/200MWh, located in Bridgewater, Spider Lake, and White Rock Road. The proposed systems aim to enhance renewable integration, provide firm dispatchable capacity, and support grid stability through energy time shifting and fast frequency response.

Wind Integration Mitigation Options - On December 8th, 2024, NS Power published the Wind Integration Study titled "Large Scale Integration of Invertor Based Resources" on the IRP website - o This study assesses the requirements on the grid...

AI summary NS Power published a Wind Integration Study assessing grid requirements for integrating invertor-based resources like wind and solar while maintaining reliability. The study identifies key metrics and mitigation options, including synchronous condensers, FACTS devices, and fast acting synchronous generation, in addition to battery energy storage systems (BESS).

Battery storage proposed to be functionalized as a transmission resource - Battery storage provides both generation and transmission services - Battery storage consumes energy (similar to transmission losses)

AI summary Battery storage is being considered for dual functionality as both a generation and transmission resource. It consumes energy, similar to transmission losses, which may impact how it is integrated into the grid.

Outcome: Avoiding the challenge of evaluating technology performance to classify costs to demand - Classification of new resources is imprecise and not fixed over time - Generation and transmission are no longer built to satisfy demand in...

AI summary The document discusses the challenges of classifying new resources and the impracticality of traditional peaker methods in modern grid management. It highlights the HCM Method as an alternative for classifying non-fuel costs based on grid stress events.

Future generation will increase energy arbitrage opportunities - Avoiding curtailment by shifting demand from low-output to high-output periods - Using battery storage to deliver energy at a different time but with an energy loss

AI summary The text discusses how future energy generation will create more opportunities for energy arbitrage by shifting demand from low-output to high-output periods and using battery storage, albeit with energy loss.

Dispatchable Resource Allocation - Dispatchable resources with ramping capabilities should be allocated to demand. - Batteries do not produce energy, they are charged with energy and discharged at times of peak demand and periodically for...

AI summary The text discusses the allocation of dispatchable resources with ramping capabilities to meet demand, noting that batteries are used primarily for peak shaving due to their charge cycles causing degradation over time.

2026-2027 GRA Direct Evidence Appendix 12A(3) Page 164 of 310 REDACTED (CONFIDENTIAL INFORMATION REMOVED) - 2. The NS Power supply resource portfolio will transition to incorporate increased amounts of renewable and intermittent resources....

AI summary The document outlines key changes in the Nova Scotia Power supply resource portfolio, including increased renewable energy integration, the impact of customer-owned generation like solar PV, and the influence of battery storage systems on grid dynamics. It also mentions the development of new market and regulatory processes, as well as evolving customer expectations regarding service options.

Issue 3a - Functionalization 'transmission' vs. distribution? SBA View-The SBA believes that the majority of time the methodology currently used is adequate. However distributed energy resources will increasingly be making use of distribut...

AI summary The SBA acknowledges that the current methodology is mostly adequate but notes that distributed energy resources are increasingly using distribution-level voltage lines, raising questions about how distribution costs can be functionalized as transmission costs.

- o Top-Up Capacity Service provision of capacity to support energy delivery through the energy balancing service in respect of imbalance between load and generation. 2023 2024 Variance Administration Charge ($/customer/month $ 374.89 $ 38...

AI summary The document outlines the Top-Up Capacity Service, which provides capacity to support energy delivery through the energy balancing service, addressing imbalances between load and generation. It includes a table showing administration and demand charges for 2023 and 2024, with a variance in administration charges.

Pricing of Energy Balancing and Standby Demand Services: Wholesale vs Retail Markets

AI summary The document discusses the pricing of energy balancing and standby demand services in both wholesale and retail markets. It includes figures and visual representations that likely illustrate the differences and considerations in these market segments.

Methods to evaluate energy delivered and annual energy losses Network segments Methodology Transmission Lines PSS/E software simulations using 8760 data Substations Power Transformers No-Load Losses Inventory calculations Substations Power...

AI summary The document outlines methods to evaluate energy delivered and annual energy losses across various network segments, including the use of software simulations, inventory calculations, and model calibrations based on industry reports.

2026-2027 GRA Direct Evidence Appendix 12A(5) 1 Page 13 of 31 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Status Quo CTD Referen ce NS Power Position (Pre Resolution Session) NS Power Updated Position (Following Resolution Session) Justifi...

AI summary The table outlines a comparison between the Status Quo and the Cost of Capital and Affordability Study (CCAS) reference, focusing on grid-scale storage issues. It includes columns for NS Power's initial position, updated position following a resolution session, and the justification for the updated position.

1 It is Elenchus' opinion that all proposed changes to NS Power's COSS are consistent with 2 generally accepted ratemaking principles and practice. The changes are best viewed as 3 refinements that are needed to ensure that NS Power's cost...

AI summary Elenchus supports proposed changes to NS Power's Cost of Service Study, arguing they align with ratemaking principles and industry practices. These changes include classifying generation costs using the system load factor, reclassifying transmission costs as 100% demand, and defining storage as sub-functions. These refinements aim to equitably assign costs to customer classes and better align with Canadian standards.

4 Table 2 – Summary of NS Power Proposed Methodology Status Quo Change Generation • Allocation except for treatment of purchased power • No initial classification to energy for environmental and fuel conversion reasons • Use system load fa...

AI summary NS Power proposes changes to its methodology for classifying and allocating costs related to generation, transmission, and distribution. Key changes include refunctionalizing radial-to-generation, using system load factors for classification, and creating new storage sub-functions. These changes aim to improve cost allocation and align with updated regulatory practices.

2026-2027 GRA Direct Evidence Appendix 12B Page 21 of 55 REDACTED (CONFIDENTIAL INFORMATION REMOVED) -21- NSP COSS Consultation Report Draft April 25, 2025 - 1 or point to point service so this proposed change better aligns NS Power's tran...

AI summary Nova Scotia Power (NSP) proposes to reclassify a grid-scale storage facility from the Transmission function to a new Generation Storage sub-function due to its primary generation purpose. Elenchus supports this reclassification for accurate cost allocation and future storage projects.

5.1.3.3 ELENCHUS OPINION - 2 Creating a transmission storage sub-function is prudent at this time given developments - 3 in the electricity sector since NS Power's last cost of service study review. Storage can - 4 be used for many purpose...

AI summary The text discusses the prudence of creating a transmission storage sub-function, citing developments in the electricity sector since NS Power's last cost of service study review. It notes that storage can serve multiple purposes and that NS Power is likely to develop storage with a transmission function.

5.2.3.2 NSP PROPOSED APPROACH - 2 NS Power proposes to classify transmission storage as 100% demand. - 5.2.3.3 ELENCHUS OPINION - 4 Storage facilities that are deemed to be transmission storage primarily serve the function - 5 of reducing...

AI summary NSP proposes classifying transmission storage as 100% demand, arguing that it reduces strain on the transmission system during peak times and avoids capacity-related costs. Elenchus supports this classification, emphasizing its function in reducing transmission strain.

6 6.1.1.2 NSP PROPOSED APPROACH - 7 NS Power is proposing to maintain the same sub-functions, and add an additional sub- - 8 function for storage. Storage assets may serve a distribution function, such as a battery - 9 storage system conne...

AI summary NSP proposes to maintain existing sub-functions and add a new one for storage assets that serve distribution functions, such as battery systems that help avoid capacity-related distribution costs.

2026-2027 GRA Direct Evidence Appendix 12B Page 54 of 55 REDACTED (CONFIDENTIAL INFORMATION REMOVED) -54- NSP COSS Consultation Report Draft April 25, 2025 1 with meeting the system's base, intermediate and peak demands. However, the 2 int...

AI summary The document discusses NSP's approach to classifying generation, transmission, and distribution costs in the context of evolving energy technologies and supply portfolios. It highlights the integration of renewable generation, storage, and PPAs, and proposes refining cost classifications to align with operational realities and best practices in ratemaking.

Table 7: 2026 annual energy losses per segment Net work segments Peak power (delivered by component) (MW) Annual energy (delivered by component) (GWh) Power loss at peak (MW) Power loss at peak (% of total) Annual energy loss (GWh) Annual...

AI summary Table 7 presents the 2026 annual energy losses across various segments of the power system, including transmission, distribution, secondary lines, and non-technical losses. It details metrics such as peak power, annual energy delivered, power loss, and energy loss percentages.

7.2 Coincident demand loss allocation factors The coincident demand loss can be calculated for each customer class by multiplying the class contribution to peak demand by the results of the class demand loss percentage for each network seg...

AI summary The document details the calculation of coincident demand loss allocation factors for various customer classes in Nova Scotia. Transmission losses are derived from PSS/E simulations, while distribution and secondary losses are calculated using CYME and inventory analysis. The table summarizes the loss allocation factors by class, highlighting percentages and kW values.

NOVA SCOTIA POWER Period: MONTH-Year Submitted: Date Pe Actual riod-to-date - Forecast > <- Variance Y Actual ear-to-date - Forecast > Variance Forecast Full Year Prior YTD C urr/Prior YT Actual Variance Lingan Tufts Cove Trenton Point Tup...

AI summary The document presents a table with various metrics related to Nova Scotia Power's operations, including generation, purchases, revenue, and losses, along with actual and forecasted values for different periods. The table includes data for specific locations, renewable energy sources, and financial figures. A picture is referenced but not included in the text.

Standardized Filing Requirements for Fuel - Generating Units by Type Year 2026 Thermal Units Fuel Type In Service Year Firm Capacity (MW) Net Avg. Heat Rate (Btu/kwh) Energy (GWh) Tufts Cove 1 Oil / Natural Gas 1965 78.0 24.0 Tufts Cove 2...

AI summary The document provides a detailed overview of standardized filing requirements for fuel-generating units in Nova Scotia for the year 2026, including data on various types of generating units, their fuel types, in-service years, firm capacities, and energy outputs.

Standardized Filing Requirements for Fuel - Generating Units by Type Year 2026 Net Avg. Heat Rate Thermal Units Fuel Type In Service Year Firm Capacity (MW) (Btu/kwh) Energy (GWh) Tufts Cove 1 Oil / Natural Gas 1965 78.0 32.1 Tufts Cove 2...

AI summary The document outlines standardized filing requirements for fuel generating units in Nova Scotia for the year 2026, providing detailed data on various power generation sources, including thermal units, combustion turbines, hydro systems, wind systems, independent power producers, and imported/exported power, with energy outputs and capacities listed.

Standardized Filing Requirements for Fuel - Generating Units by Type Year 2027 Thermal Units Fuel Type In Service Year Firm Capacity (MW) Net Avg. Heat Rate (Btu/kwh) Energy (GWh) Tufts Cove 1 Oil / Natural Gas 1965 78.0 3.3 Tufts Cove 2 O...

AI summary The document presents a detailed table of standardized filing requirements for fuel-generating units in Nova Scotia for the year 2027, including various thermal, combustion turbine, hydro, wind, and imported/exported power systems, along with their capacities, energy outputs, and other relevant metrics.

Investing in Cleaner, More Reliable Energy CLEANER & MORE RELIABLE CAPITAL PROJECTS (2024-2026)1 Tampa Electric – Storm Hardening $ 795 Tampa Electric – Solar Investments 690 Tampa Electric – Grid Modernization, AMI and LED 550 Nova Scotia...

AI summary The document outlines capital projects focused on cleaner and more reliable energy from 2024 to 2026, including investments in storm hardening, solar energy, grid modernization, and battery storage by various entities, with a total investment of $5,485 million, representing 62% of the baseline capital program.

Major Decarbonization Projects - 1,600 MW of solar by the end of 2025, currently 1,225 MW in-service (~$1.6B USD) - Big Bend Modernization Project, 1,090 MW (repowering unit 1 with natural gas and retiring unit 2), $876M USD investment (in...

AI summary The document outlines major decarbonization projects in Nova Scotia, including plans to achieve 1,600 MW of solar capacity by 2025, the Big Bend Modernization Project involving natural gas and battery storage, and associated investments.

Battery Energy Storage Systems (BESS) Project – NS Power - Received approval to develop three 50 MW, 4-hour grid-scaled battery facilities - Secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pat...

AI summary Nova Scotia Power has received approval to develop three 50 MW, 4-hour grid-scaled battery facilities and secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pathways' program.

The Province's plan includes: - 30% more wind power and 5% more solar energy; - Continued imports of hydro electricity from Muskrat Falls via the Maritime Link; - The incorporation of grid-scale batteries - Efficiency investments to reduce...

AI summary The Province's plan includes increasing wind and solar energy, importing hydro electricity from Muskrat Falls, incorporating grid-scale batteries, investing in efficiency to manage peak load growth, adding fast-acting natural gas generation, and building a new transmission line between Nova Scotia and New Brunswick.

Battery Energy Storage Systems (BESS) Project – NS Power - Received approval to develop three 50 MW, 4-hour grid-scaled battery facilities - Secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pat...

AI summary NS Power has received approval to develop three 50 MW, 4-hour grid-scaled battery facilities. They have secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pathways' program and entered a financial agreement with the Canada Infrastructure Bank and Wskijnu'k Mtmo'taqnuow Agency Limited (WMA) to enable Mi'kmaq communities to contribute through equity investment.

Major Decarbonization Projects - 1,500 MW of solar by the end of 2025, currently 1,255 MW in-service - Big Bend Modernization Project, 1,090 MW (repowering unit 1 with natural gas and retiring unit 2), $876M USD investment (including $91M...

AI summary The text outlines major decarbonization projects, including the deployment of 1,500 MW of solar power by 2025, the Big Bend Modernization Project involving natural gas and battery storage, and the retirement of a coal unit. These initiatives aim to reduce carbon emissions and transition to cleaner energy sources.

Major Decarbonization Projects - Added ~600 MW of wind (~150 MW rate base and ~450 MW through IPPs) - Completed Maritime Link ($1.8 billion) project which is capable of transmitting 500 MW of hydro capacity - Battery Energy Storage Systems...

AI summary The document outlines major decarbonization projects, including the addition of 600 MW of wind energy, completion of the Maritime Link transmission project, and development of three 50 MW battery energy storage systems. These initiatives aim to enhance renewable energy capacity and grid reliability.

2024-2026 Additional Potential Investments 2024F 2025F 2026F 2024–2026 Total US OPERATIONS Tampa Electric: Carbon Capture & Sequestration $ - $ - $ 275 $ 275 Tampa Electric: Incremental Renewables - 95 140 235 Peoples Gas: Other - 35 35 70...

AI summary The document outlines additional potential investments from 2024 to 2026, including projects such as carbon capture and sequestration, renewable energy, LNG storage, and battery installations. The table provides figures in USD and CAD for various companies and operations, including Nova Scotia Power's Clean Power Plan.

CLEANER & MORE RELIABLE CAPITAL PROJECTS (2024-2026) 1 Tampa Electric – Storm Hardening $ 795 Tampa Electric – Solar Investments 690 Tampa Electric – Grid Modernization, AMI and LED 550 Nova Scotia Power – Reliability Projects 650 New Mexi...

AI summary The table outlines cleaner and more reliable capital projects from 2024 to 2026, listing various initiatives by organizations such as Tampa Electric, Nova Scotia Power, and PGS, with a total investment of $5,150 million. The projects include storm hardening, solar investments, grid modernization, and reliability improvements.

Major Decarbonization Projects - 1,500 MW of solar by the end of 2025 with 1,255 MW in-service at December 31, 2023 - Big Bend Modernization Project, 1,090 MW (repowering unit 1 with natural gas and retiring unit 2), $876M USD investment (...

AI summary The document outlines major decarbonization projects, including the deployment of 1,500 MW of solar power by 2025, the Big Bend Modernization Project involving natural gas and battery storage, and the retirement of a coal unit. These initiatives aim to reduce carbon emissions and support the transition to cleaner energy sources.

Major Decarbonization Projects - Added ~600 MW of wind (~150 MW rate base and ~450 MW through IPPs) - Completed Maritime Link ($1.8 billion) project which is capable of transmitting 500 MW of hydro capacity - Battery Energy Storage Systems...

AI summary The text outlines major decarbonization projects, including the addition of 600 MW of wind capacity, completion of the Maritime Link project, and development of three 50 MW battery energy storage systems. These initiatives aim to enhance renewable energy integration and grid reliability.

BEAR SWAMP - 50% joint venture. - 660 MW hydro pumped storage capacity located in western Massachusetts. - Attracts ISO NE capacity revenue.

AI summary BEAR SWAMP is a 50% joint venture with a 660 MW hydro pumped storage capacity in western Massachusetts, attracting ISO NE capacity revenue.

Battery Energy Storage System ("BESS") • Approval to invest ~$240M to develop three 50MW, 4-hour grid-scale battery facilities in Nova Scotia

AI summary The document outlines approval for an investment of approximately $240 million to develop three 50MW, 4-hour grid-scale battery facilities in Nova Scotia.

Major Decarbonization Projects - Added ~600 MW of wind (~150 MW rate base and ~450 MW through IPPs) - Completed Maritime Link ($1.8 billion) project which is capable of transmitting 500 MW of hydro capacity - Battery Energy Storage Systems...

AI summary The document outlines major decarbonization projects in Nova Scotia, including the addition of 600 MW of wind energy, the completion of the Maritime Link project, and the development of three 50 MW battery energy storage systems. These initiatives are part of efforts to transition to cleaner energy sources.

2026-2027 GRA OP-12 Attachment 1 Page 297 of 684 REDACTED (CONFIDENTIAL INFORMATION REMOVED) 2024F 2025F 2026F 2024–2026 Total US OPERATIONS Tampa Electric: Carbon Capture & Sequestration $ - $ - $ 275 $ 275 Tampa Electric: Incremental Ren...

AI summary The table outlines additional potential investments for US and CAD operations from 2024 to 2026, including projects like Carbon Capture & Sequestration by Tampa Electric and the Clean Power Plan by Nova Scotia Power. It also includes FX rate assumptions and total investment figures in both USD and CAD.

CLEANER & MORE RELIABLE CAPITAL PROJECTS (2024-2026) 1 Tampa Electric – Storm Hardening $ 795 Tampa Electric – Solar Investments 690 Tampa Electric – Grid Modernization, AMI and LED 550 Nova Scotia Power – Reliability Projects 650 New Mexi...

AI summary The document outlines capital projects related to cleaner and more reliable energy initiatives from 2024 to 2026, including storm hardening, solar investments, grid modernization, and battery storage, with a total investment of $5,150 million. Approximately 60% of the total investment is allocated to various projects.

Major Decarbonization Projects - Added ~600 MW of wind (~150 MW rate base and ~450 MW through IPPs) - Completed Maritime Link ($1.8 billion) project which is capable of transmitting 500 MW of hydro capacity - Battery Energy Storage Systems...

AI summary The text outlines major decarbonization projects, including the addition of 600 MW of wind energy, completion of the Maritime Link project, and development of battery energy storage systems. These initiatives are part of efforts to increase renewable energy capacity and reduce carbon emissions.

The Province's plan includes: - 30% more wind power and 5% more solar energy; - Continued imports of hydro electricity from Muskrat Falls via the Maritime Link; - The incorporation of grid-scale batteries - Efficiency investments to reduce...

AI summary The Province's plan includes increasing wind and solar energy, importing hydroelectricity, incorporating grid-scale batteries, investing in efficiency to manage peak load, adding natural gas generation, and constructing a new transmission line between Nova Scotia and New Brunswick.

Battery Energy Storage Systems (BESS) Project – NS Power - Received approval to develop three 50 MW, 4-hour grid-scaled battery facilities - Secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pat...

AI summary NS Power received approval to develop three 50 MW, 4-hour grid-scaled battery facilities. They secured $111M in funding from Natural Resources Canada's 'Smart Renewables and Electrification Pathways' program and have a financial agreement with the Canada Infrastructure Bank and Wskijnu'k Mtmo'taqnuow Agency Limited (WMA) that allows Mi'kmaq communities to contribute through equity investment.

A Grid With Intelligence Accommodating and serving the load growth of the future, including customerowned and "behind the meter" assets: - EVs - Rooftop solar - On-premise equipment - Microgrids - Inverters

AI summary The document discusses the need for a more intelligent grid to accommodate future load growth, including customer-owned and behind-the-meter assets such as EVs, rooftop solar, on-premise equipment, microgrids, and inverters.

Michelin Managing cyber risk Roll-out of advanced / smart devices Incorporating renewables Leveraging AI Advanced battery storage Customer education along the journey Balancing modernization initiatives with meeting demand growth Skills &...

AI summary The text outlines key initiatives and considerations for managing cyber risk, rolling out advanced devices, incorporating renewables, leveraging AI, and advancing battery storage. It emphasizes the importance of customer education, balancing modernization with demand growth, and skills development in the context of grid modernization and its benefits for customers and shareholders.

Battery Storage NS Power White Rock Battery Storage Facility

AI summary The text mentions the NS Power White Rock Battery Storage Facility, indicating a focus on battery storage initiatives by NS Power.

$13.2B on Grid Reliability and Modernization $3.5B on Renewable Integration Transmission and distribution projects at TEC and NSPI Generation reliability projects at TEC and NSPI Gas infrastructure investment at PGS Solar investment at TEC...

AI summary The text outlines significant investments in grid reliability, modernization, and renewable integration, including transmission and distribution projects, generation reliability, gas infrastructure, solar, battery storage, and renewable natural gas initiatives across various entities.

2026-2027 GRA OP-12 Attachment 1 Page 417 of 684 REDACTED (CONFIDENTIAL INFORMATION REMOVED) In millions of CAD RELIABILITY & GRID MODERNIZATION PROJECTS Electric Grid Modernization at Tampa Electric $4,500 Distribution Expansion at PGS 1,...

AI summary The document outlines various projects and investments across reliability and grid modernization, renewable energy integration, technological innovation, and other initiatives, totaling approximately CAD 20.43 million. Key projects include grid modernization, distribution expansion, renewable energy investments, and technological upgrades.

$13.2B on Grid Reliability and Modernization $3.5B on Renewable Integration Transmission and distribution projects at TEC and NSPI Generation reliability projects at TEC and NSPI Gas infrastructure investment at PGS Solar investment at TEC...

AI summary The document outlines significant investments in grid reliability, modernization, and renewable integration, including transmission and distribution projects, generation reliability initiatives, gas infrastructure investment, solar, battery storage, and renewable natural gas projects by TEC, NSPI, and PGS.

Capital Project Details In millions of CAD RELIABILITY & GRID MODERNIZATION PROJECTS Electric Grid Modernization at Tampa Electric $4,500 Distribution Expansion at PGS 1,780 Generation Expansion and Efficiency at Tampa Electric 1,740 T&D I...

AI summary The document outlines capital project details, including reliability and grid modernization, renewable energy integration, technological innovation, and other initiatives, with total investments amounting to approximately CAD 20,430 million.

Capital Project Details In millions of CAD RELIABILITY & GRID MODERNIZATION PROJECTS Electric Grid Modernization at Tampa Electric $4,500 Distribution Expansion at PGS 1,780 Generation Expansion and Efficiency at Tampa Electric 1,740 T&D I...

AI summary The document outlines capital project details, including reliability and grid modernization projects, renewable energy integration, technological innovation, and other initiatives, with total investments amounting to approximately $20.43 million.

on Renewable Integration - Solar investment at Tampa Electric - Battery storage at Tampa Electric and Nova Scotia Power - Renewable Natural Gas at Peoples Gas $2.1B

AI summary The document text highlights investments in renewable energy, including solar investment at Tampa Electric, battery storage projects at Tampa Electric and Nova Scotia Power, and renewable natural gas initiatives at Peoples Gas. It also includes a figure of $2.1B and references images related to the content.

Path to 2030 NSPI has worked collaboratively with the Province to develop the 2030 Clean Power Plan to phase out coal and increase renewable generation to 80% of sales by 2030. The Plan is closely aligned with one of NSPI's Integrated Reso...

AI summary NSPI has developed the 2030 Clean Power Plan with the Province to phase out coal and increase renewable generation to 80% of sales by 2030. The plan includes investments in wind, solar, battery storage, and a 345kV reliability tie with New Brunswick, supported by federal funding and lower cost debt. However, the development of the Atlantic Loop has been paused due to supply chain challenges and the 2030 timeline.

Major Decarbonization Projects - Added ~600 MW of wind (~150 MW rate base and ~450 MW through IPPs) - Completed Maritime Link ($1.8 billion) project which is capable of transmitting 500 MW of hydro capacity - Refurbishment of Nova Scotia P...

AI summary The document outlines major decarbonization projects including the addition of wind capacity, completion of the Maritime Link transmission project, refurbishment of hydro facilities, and investments in grid-scale battery storage and transmission to support renewable energy and phase out coal by 2030.

Enabling Renewable Generation Nova Scotia Power continues to work collaboratively with the Provincial Government to implement the 2030 Clean Power Plan to phase out coal and increase renewable generation to 80% of sales by 2030. Updates si...

AI summary Nova Scotia Power is advancing renewable generation initiatives, including grid-scale battery installations and transmission line projects, in alignment with the 2030 Clean Power Plan. The creation of an Independent System Operator and partnerships with the Canada Infrastructure Bank and WMA are key aspects of these efforts.

Notice of Annual Meeting of Common Shareholders and Management Information Circular 2026-2027 GRA OP-13 Attachment 1 Page 7 of 115 REDACTED (CONFIDENTIAL INFORMATION REMOVED) We successfully completed our $3.2 billion capital plan for 2024...

AI summary The company successfully completed its 2024 capital plan, which included new solar projects, RNG pipeline construction, and a grid-scale battery project. These efforts contributed to a 49% reduction in CO2 emissions and an 80% decrease in coal use since 2005. A new $20 billion capital plan through 2029 is outlined, focusing on reliability, resiliency, grid modernization, and renewable integration.

REDACTED 2026-2027 GRA SR-02 Attachment 1 Page 44 of 175 2024 Load Forecast Report REDACTED 1 but research in these areas is ongoing and timelines for significant shifts in this technology 2 are unknown. 3 4 The use of home battery storage...

AI summary The document discusses ongoing research into technological shifts and the exploration of home battery storage through the SGNS Project, including performance data on battery backup and PV/battery combinations. These initiatives are part of grid-aware use cases such as load shifting and demand response.

2025 Load Forecast Report Redacted 1 LIST OF FIGURES 2 3 Figure 1: Historical and Predicted Annual Net System Requirement 8 4 Figure 2: Historical and Predicted Annual System Peak 9 5 Figure 3: Historic and Forecast Net System Requirement...

AI summary The 2025 Load Forecast Report outlines historical and projected data on annual net system requirements, system peaks, heating and cooling degree days, customer trends, and the impact of electrification, EVs, and renewable energy on load forecasting.

1 4.4.5 New Technologies 2 3 The 2025 Load Forecast does not assume a significant amount of distributed solar/battery storage 4 combinations or storage only deployments. The cost of home batteries is still relatively expensive, in the rang...

AI summary The 2025 Load Forecast does not assume widespread adoption of distributed solar/battery storage due to high costs, which make gas generators a more cost-effective alternative for backup power. Vehicle-to-Grid (V2G) technology is still in development, and while batteries can support the grid, their current high costs limit their deployment. Future cost reductions and technological advancements may change this dynamic.

1 Figure 33: Potential Peak Impacts from Batteries Technology Residential Share (%) 50% 25% 10% 5% Battery Peak Impact - No 0 0 0 0 Control (MW) Battery Peak Impact - (1,403) (702) (281) (140) Optimal DR Control (MW) 2

AI summary Figure 33 presents potential peak impacts from batteries under different residential share scenarios, showing the impact of battery peak control and optimal DR control in megawatts for varying percentages of residential participation.

7 Modeled Peak (MW) Res Heat (MW) EV (MW) DR (MW) Hybrid (MW) C&I Elect. (MW) Large Cust. (MW) DSM (MW) Firm Peak (MW) Inter. Cust. (MW) System Peak (MW) 2025 2,180 2 3 -4 - 0 96 -11 2267 132 2,403 2035 2,455 17 121 -37 -48 4 105 -114 2502...

AI summary The table provides modeled peak demand forecasts for various load categories in 2025 and 2035, including residential heating, electric vehicles, demand response, and others, with values in megawatts (MW). It also includes a scenario for 2035 with maximum non-coincident EV peak demand.

Figure D8: Relative Impact of Inputs Item 2025 Energy (GWh) 2025 Peak (MW) 2035 Energy (GWh) 2035 Peak (MW) Included in Forecast DSM (base case) -150 -26 -1456 -261 Solar PV -148 0 -1023 0 EV (current forecast) 32 5 740 109 Other Possible...

AI summary Figure D8 shows the relative impact of various energy inputs on energy demand and peak load for 2025 and 2035, including the effects of demand-side management, solar PV, EVs, hydrogen production, and battery storage. The impact of hydrogen facilities on NS Power's system requirements is still under evaluation.

REDACTED 1 MW in 2026 and then to MW in 2027 which will result in a reduced reliance on solid 2 fuel generation in those years. 3 4 (b) The SO2 emissions CoV will also result in lower generation from natural gas as solid fuel 5 is forecast...

AI summary The document discusses projected energy generation and emissions trends from 2024 to 2027, noting reduced reliance on solid fuel and natural gas due to increased renewable energy. It also highlights lower GHG compliance costs in 2026 and 2027, and mentions modeling of surplus energy and bilateral energy purchases.

NON-CONFIDENTIAL 1 Request IR-35: 2 3 Reference: N-6 - 2026-2027 GRA Direct Evidence Appendix 7C Page 37-38 of 58 4 - 5 Per N-6, (Appendix 7C), page 37-38 of 58, we understand that other goods & services expense - 6 has increased from 2024...

AI summary NS Power is installing three grid-scale batteries expected to be operational in 2025 and 2026. The response explains that the increase in other goods & services expense is due to the operating and maintenance costs associated with these batteries, which are outlined in a table.

ACCOUNT 363.10 ENERGY STORAGE EQUIPMENT - EV CHARGERS AVG AGE RET 0.0 001 EXPERIENCE ANALYSIS PLACEMENT BAND 2021-2023 EXPERIENCE BAND 2021-2023 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF...

AI summary This document provides an experience analysis for energy storage equipment, specifically EV chargers, with data on exposures, retirements, and survival rates across different age intervals from 2021 to 2023. The data indicates a 100% survival rate across all intervals, suggesting no retirements occurred during the period.

NOVA SCOTIA POWER, INC. ACCOUNT 363.10 ENERGY STORAGE EQUIPMENT - EV CHARGERS SUMMARY OF CURVE FITTING RESULTS - PCT SURV BALANCED AREAS PLACEMENT BAND 2021-2023 001 EXPERIENCE BAND 2021-2023 SURVIVOR RESID RANGE OF SURVIVOR RESID RANGE OF...

AI summary The document presents summary curve fitting results for energy storage equipment, specifically EV chargers, under Account 363.10. It includes placement and experience bands from 2021-2023 and survivor residue ranges. A segment between 85.0 and 15.0 percent surviving is noted as not fitted.

ACCOUNT 363.20 ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR AVG AGE RET 0.0 PLACEMENT BAND 2022-2023 001 EXPERIENCE ANALYSIS EXPERIENCE BAND 2022-2023 AGE AT BEGIN OF INTERVAL EXPOSURES AT BEGINNING OF AGE INTERVAL RETIREMENTS DURING AGE I...

AI summary The text discusses energy storage equipment related to distributed solar under Account 363.20, including an experience analysis table with exposure and survival ratios for the 2022-2023 period. It also references a 2026-2027 GRA Emrydia IR-2 Attachment 1.

ACCOUNT 363.30 ENERGY STORAGE EQUIPMENT - BATTERIES AVG AGE RET 0.0 PLACEMENT BAND 2021-2023 001 EXPERIENCE ANALYSIS EXPERIENCE BAND 2021-2023 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF IN...

AI summary The text presents a table related to the experience analysis of energy storage equipment (batteries) over the 2021-2023 period, including exposure and survival rates, and references an attachment from the 2026-2027 GRA Emrydia IR-2 document.

Notes: • • Team that is determining what the investment strategy should be for assets and trying to find the most efficient ways to invest their money - Plan to get to clean energy by 2030. Eliminate coal fired generation. Path to 2030. -...

AI summary The text discusses Nova Scotia Power's investment strategy for assets, including plans to transition to clean energy by 2030, eliminate coal-fired generation, and improve sensor and telecommunications technologies for remote monitoring. It also mentions ISO Nova Scotia's shift towards renewables and the installation of a community solar garden in Amherst. Grid-scale batteries are highlighted as part of the energy infrastructure.

Tufts Cove – CCGT – Units 4-6 - Supply of natural gas - o Fixed contract with supplier - Tufts Cove Unit 4 (installed 2003) & Unit 5 (installed 2005). - Units 4-5 Initially installed as simple cycle CTs. GE model LM 6000. - 3 engines 2 ope...

AI summary The document discusses the Tufts Cove CCGT Units 4-6, including their installation dates, conversion to CCGT, maintenance costs, and future battery storage plans. It highlights the retirement date for the units, the cost of replacing hot-gas path components, and the classification of battery storage as transmission assets.

KEY FINDINGS Based on the common themes observed, the following are the key guiding principles to inform the Action Plan and Roadmap Items: - Variable renewable capacity additions are required to meet the 2030 targets. Up to 1500MW of addi...

AI summary Key findings emphasize the need for 1500MW of additional wind capacity and 200MW of solar capacity by 2030. Battery storage, firm capacity, and synchronous condensers are critical for system reliability. The Atlantic Loop project is highlighted as beneficial for reducing costs and emissions, requiring government support. NS Power has updated its 2020 IRP Action Plan and Roadmap based on 2023 modeling.

CAPACITY ADDITIONS The optimized capacity additions highlight the transition of the power system to an increased penetration of variable renewable energy, backed by fast acting firm capacity resources (Battery and Combustion Turbine) as th...

AI summary The document discusses optimized capacity additions in the power system, emphasizing the transition to variable renewable energy supported by fast-acting firm capacity resources like batteries and combustion turbines. Fuel conversions and primary fuel switching, such as coal-to-gas and coal-to-oil, are highlighted as low-cost firm capacity options that ensure reliability during peak demand and resource unavailability.

Battery Storage - Battery storage is added to all scenarios with additions beginning as soon as 2025 in many scenarios. - At least 100MW of 4-hour battery storage is added by 2030 in the majority of scenarios. - Increased additions of batt...

AI summary Battery storage is included in various scenarios, with significant additions expected by 2030. It provides multiple benefits like energy arbitrage and wind integration, though some services are not captured in the IRP model. No Atlantic Loop scenarios show higher battery storage additions.

GENERATION MIX The evergreen IRP modeling results demonstrate that annual generation profiles are increasingly decarbonized through the planning horizon in line with environmental policy changes in 2030 and 2035 (please refer toFigure 4)....

AI summary The evergreen IRP modeling shows an increasing decarbonization of the generation mix through 2030 and 2035, with coal being phased out and replaced by wind and battery storage. Wind generation is a key contributor across all scenarios, with curtailment rates ranging from 10% to 45%. Gas resources are used primarily in peaking capacity, with higher utilization in No Atlantic Loop scenarios. Emissions are reduced by over 90% from 2005 levels in all scenarios.

Item 3f: Battery Storage Capacity Develop 4-hour battery storage additions to the system targeting at least 100MW in-service by 2030, with battery storage additions beginning by 2025. Continue to explore the potential benefits of additiona...

AI summary The document outlines a plan to develop 4-hour battery storage additions targeting at least 100MW by 2030, with implementation beginning by 2025. It also suggests exploring the potential benefits of additional energy storage beyond this target as part of the transition to 2030.

ITEM 4: INSTALLED COSTS OF WIND, SOLAR AND ENERGY STORAGE Continue to track the installed costs of wind, solar, and energy storage to look for significant variations from the trajectories analyzed in the evergreen IRP. If observed, update...

AI summary The document recommends continuing to monitor the installed costs of wind, solar, and energy storage for significant deviations from the trajectories analyzed in the evergreen IRP, with updates to the capacity mix as needed.

9.2 Daily Activities While longer-term decision-making utilizes this approach, it is similarly applied in regularly daily decisions. Work prioritization standards consider all the same inputs as noted above, including asset criticality, he...

AI summary Daily activities involve work prioritization based on asset criticality, health, and compliance standards. Dispatch decisions consider fuel costs, environmental constraints, inter-provincial energy availability, and operational limitations when addressing generation unit failures.

Appendix "A" GRA Element Settlement Terms 362.30 363.10 363.20 STATION EQUIPMENT - MISCELLANEOUS ENERGY STORAGE EQUIPMENT - EV CHARGERS ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR 15 - S2.5 15 - S3 25 - S3 (5) 0 0 13,123,052 987,094 1,123...

AI summary The document provides a detailed breakdown of settlement terms for various GRA elements, including station equipment, energy storage equipment, and infrastructure components. It includes monetary figures, percentages, and other metrics related to these terms.

The Path to 2030 - 2024 Update 1 TABLE OF CONTENTS 2 3 1.0 EXECUTIVE SUMMARY 5 4 2.0 INTRODUCTION 9 5 3.0 2030 DECARBONIZATION GOALS 11 6 3.1 80 Percent Renewable Electricity Sales 11 7 3.2 Coal Phase Out 12 8 3.3 Proposed Clean Electricit...

AI summary This document outlines Nova Scotia's 2030 Clean Power Plan, including goals for renewable energy, coal phase-out, and resource development. It details various projects such as wind and solar resources, battery storage, and reliability tie initiatives.

Figure 1 – 2030 Clean Power Plan Resources Nameplate Capacity (MW) Initial Anticipated COD (Year) Updated Anticipated COD (Year) Wind & Solar Resources (10) (1001) Rate Base Procurement 306 2025 2025-2026 Green Choice Program 416 2028 2028...

AI summary Figure 1 outlines the 2030 Clean Power Plan Resources, including wind and solar capacity, energy storage, fuel conversions, and load management initiatives. It provides details on various projects, their anticipated completion dates, and total capacities for renewable energy, storage, and generation resources.

DATE FILED: December 9, 2024 Page 27 of 54 1 6.2 Battery Storage & Renewable Integration Resources 2 3 The 2030 Clean Power Plan calls for deployments of grid-scale storage in Nova Scotia. In 2024 4 150 MW of 4-hour storage capacity was ap...

AI summary The text discusses the approval and progress of the NS Power Battery Storage Project (ECEI) in Nova Scotia, including the approval of capital costs, construction activities, and commissioning dates for the battery storage sites. It also mentions the 2030 Clean Power Plan and future storage capacity additions.

14 6.2.2 Battery Storage Procurement 15 On March 22, 2023, the Province introduced amendments to the Electricity Act15F 16 16 that provide new 17 procurement pathways for energy storage in Nova Scotia. Specifically, the changes to the Act...

AI summary On March 22, 2023, the Province of Nova Scotia introduced amendments to the Electricity Act, providing new procurement pathways for energy storage, specifically battery storage systems.

1 allow NRR to issue RFPs for energy storage solutions and contracts for well-developed, innovative 2 17 energy storage projects that can be implemented quickly. 16F 3 4 The amendments provide two pathways for new energy storage projects t...

AI summary The amendments allow NRR to issue RFPs for energy storage solutions and contracts for innovative projects that can be implemented quickly. The Province plans to procure energy storage capacity through a competitive process led by the NSIESO, with the quantity and timing determined by the NSIESO. The transition to inverter-based resources requires new grid support to maintain stability and reliability.

18 Wind-Integration-Study-Large-Scale-Integration-of-IBR-in-Nova-Scotia-Public.pdf (nspower.ca) 1 mitigations are incorporated into grid design and specifications. Mitigation options identified in 2 the report and under assessment include:...

AI summary The document outlines mitigation strategies for integrating inverter-based resources (IBR) into Nova Scotia's grid, including control systems, battery storage, and synchronous condensers. NS Power is prioritizing inertial support at specific wind farm sites as per a directive from the Minister of NRR to ensure grid stability and reliability.

1 Figure 8 – Project Accountabilities Matrix 2030 Projects Accountability NS Power Key Action Items NS Government Key Action Items Partner Key Action Items Wind/Solar NS Develop and • Procure • IPPs develop, Government own grid renewables...

AI summary The document outlines the responsibilities for various 2030 projects related to renewable energy, battery storage, and grid stability in Nova Scotia. NS Power and the NS Government have defined roles in developing, procuring, and integrating renewable energy and storage solutions, with IPPs playing a key role in project development and operation.

Section 4 of the Community Solar Program Regulations provides "A subscriber must not be charged any additional fees by NSPI or a project owner to participate in the community solar program," and Section 5 provides "A subscriber is billed b...

AI summary Section 4 and 5 of the Community Solar Program Regulations outline billing procedures for subscribers. NS Power has piloted Virtual Power Plants (VPPs) and DERMS during various projects, highlighting the benefits and requirements of DERMS platforms in managing distributed energy resources.

• NS Power has created significant forecast savings described in M11539 Battery Energy Storage System. NS Power negotiated beneficial financing and securing federal grant funding through the SREP program reducing costs by a combined $131 m...

AI summary NS Power has achieved significant forecast savings through the Battery Energy Storage System and the NS-NB Reliability Intertie Project, including cost reductions via federal grants and low-cost financing. The request IR-55 asks for an explanation on deferred recovery of Post Tropical Storm Fiona costs and a restatement of Figure 7A to include these costs.

The peer plant groups were selected based on the following criteria: - Subcritical Coal-Fired Steam Turbines: - Prime mover: Steam turbine - Primary fuel: Coal - Main steam pressure: <2,800 psi (subcritical) - Capacity: 100-200 MW - Commer...

AI summary The document outlines the selection criteria for peer plant groups, including details on prime movers, fuels, capacities, commercial dates, and excluded regions and capacity factors for various types of power generation plants.

CONFIDENTIAL (Attachment Only) 1 be found on the OASIS site at Generator Interconnection Study Reports Nova Scotia 2 Power; this listing notes the county in which each facility is located, highlighting the 3 geographic diversity of propose...

AI summary The document discusses the geographic distribution of wind generation facilities in Nova Scotia, noting that most wind capacity is on the mainland, and highlights the need for additional infrastructure to support variable renewable energy integration, including synchronous condensers and battery storage. It also mentions the impact of peak demand growth due to electrification on the need for new firm capacity and transmission expansion.

NOVA SCOTIA POWER, INC. ACCOUNT 340.96 SOLAR - SMARTGRID SUMMARY OF CURVE FITTING RESULTS - PCT SURV BALANCED AREAS PLACEMENT BAND 2021-2021 005 EXPERIENCE BAND 2020-2023 SURVIVOR RESID RANGE OF SURVIVOR RESID RANGE OF CURVE MEAS FIT CURVE...

AI summary The document presents a summary of curve fitting results for Account 340.96 Solar - SmartGrid, including placement and experience bands, survivor residual ranges, and curve measurement fit data for the period 2021-2023.

ACCOUNT 363.10 ENERGY STORAGE EQUIPMENT - EV CHARGERS AVG AGE RET 0.0 001 EXPERIENCE ANALYSIS PLACEMENT BAND 2021-2023 EXPERIENCE BAND 2021-2023 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF...

AI summary The text presents an experience analysis table for energy storage equipment, specifically EV chargers, with data on exposures, retirements, and survival rates across different age intervals. The GRA Emrydia IR-2 Attachment 1 is referenced as part of the 2026-2027 Generation Resource Assessment.

ACCOUNT 363.20 ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR AVG AGE RET 0.0 PLACEMENT BAND 2022-2023 001 EXPERIENCE ANALYSIS EXPERIENCE BAND 2022-2023 AGE AT BEGIN OF INTERVAL EXPOSURES AT BEGINNING OF AGE INTERVAL RETIREMENTS DURING AGE I...

AI summary The text provides a table related to the average age and retirement data for energy storage equipment under Account 363.20, specifically for distributed solar. It also references an attachment from the 2026-2027 GRA Emrydia IR-2 document.

ACCOUNT 363.30 ENERGY STORAGE EQUIPMENT - BATTERIES AVG AGE RET 0.0 PLACEMENT BAND 2021-2023 001 EXPERIENCE ANALYSIS EXPERIENCE BAND 2021-2023 AGE AT EXPOSURES AT RETIREMENTS PCT SURV BEGIN OF BEGINNING OF DURING AGE RETMT SURV BEGIN OF IN...

AI summary This section discusses energy storage equipment, specifically batteries, and includes a table showing exposure and retirement data for different age intervals. It references the 2026-2027 GRA Emrydia IR-2 Attachment 1.

ACCOUNT 363.20 ENERGY STORAGE EQUIPMENT - DISTRIBUTED SOLAR YEAR (1) ORIGINAL COST (2) CALCULATED ACCRUED (3) ALLOC. BOOK RESERVE (4) FUTURE BOOK ACCRUALS (5) REM. LIFE (6) ANNUAL ACCRUAL (7) 1955 2,029.64 2,544 2,740 1956 7,861.70 9,784 1...

AI summary The document presents a table detailing the original cost, calculated accrued costs, allocated book reserves, and future book accruals for energy storage equipment related to distributed solar from 1955 to 1983.

Notes: - What does the company have planned for grid-scale batteries? - o With the IRP and looking at renewables, to maintain great stability…batteries have been apart of their plans going back for years - o Wind resources - Wind is a prim...

AI summary The company is planning to install grid-scale lithium-ion phosphate batteries as part of their Integrated Resource Plan (IRP) to support grid stability, peak shaving, frequency response, and black start capabilities. The batteries will be located near substations in Halifax, Bridgewater, and White Rock, with some sites having specific functions like black start. The service life is expected to be 20 years, with capacity degradation over time. Warranty and service agreements will cover capacity and degradation.

Tufts Cove – CCGT – Units 4-6 - Supply of natural gas - o Fixed contract with supplier - Tufts Cove Unit 4 (installed 2003) & Unit 5 (installed 2005). - Units 4-5 Initially installed as simple cycle CTs. GE model LM 6000. - 3 engines 2 ope...

AI summary The document discusses the Tufts Cove CCGT Units 4-6, including their installation dates, conversion to CCGT, replacement costs for hot-gas path components, and plans for battery storage facilities. It also notes the retirement date for these units and their classification as transmission assets.

KEY FINDINGS Based on the common themes observed, the following are the key guiding principles to inform the Action Plan and Roadmap Items: - Variable renewable capacity additions are required to meet the 2030 targets. Up to 1500MW of addi...

AI summary The key findings emphasize the need for significant renewable energy additions, including 1500MW of wind and 200MW of solar by 2030, along with firm capacity and battery storage. The Reliability Tie and Atlantic Loop are highlighted as critical for system reliability and cost reduction. Synchronous condensers and SMRs are also identified as important future resources.

CAPACITY ADDITIONS The optimized capacity additions highlight the transition of the power system to an increased penetration of variable renewable energy, backed by fast acting firm capacity resources (Battery and Combustion Turbine) as th...

AI summary The text discusses capacity additions in the power system, emphasizing the transition to variable renewable energy supported by fast-acting firm capacity resources like batteries and combustion turbines. It also highlights fuel conversions and primary fuel switching as low-cost firm capacity sources that ensure supply reliability during peak demand.

Battery Storage - Battery storage is added to all scenarios with additions beginning as soon as 2025 in many scenarios. - At least 100MW of 4-hour battery storage is added by 2030 in the majority of scenarios. - Increased additions of batt...

AI summary Battery storage is a key component in various scenarios, with significant additions expected by 2030. It provides multiple services such as energy arbitrage and wind integration, though some services like voltage and frequency support are not captured in the IRP model. Scenarios without the Atlantic Loop show higher battery storage additions.

Item 3f: Battery Storage Capacity Develop 4-hour battery storage additions to the system targeting at least 100MW in-service by 2030, with battery storage additions beginning by 2025. Continue to explore the potential benefits of additiona...

AI summary The document outlines a plan to develop 4-hour battery storage capacity, aiming for at least 100MW by 2030, with additions starting by 2025. It also suggests exploring additional energy storage beyond this target as part of the transition to 2030.

ITEM 4: INSTALLED COSTS OF WIND, SOLAR AND ENERGY STORAGE Continue to track the installed costs of wind, solar, and energy storage to look for significant variations from the trajectories analyzed in the evergreen IRP. If observed, update...

AI summary The document emphasizes the need to continue tracking installed costs of wind, solar, and energy storage to identify significant deviations from the trajectories outlined in the evergreen IRP, with potential updates to the capacity mix if necessary.

2.1 Asset Management Overview NS Power employs Asset Management as a discipline to consistently and diligently understand the requirements of its assets to achieve organizational objectives and the risks to achieving those objectives, whil...

AI summary NS Power employs Asset Management to understand and manage its core assets, including generation and delivery infrastructure, to meet organizational goals and manage risks. The approach is influenced by factors such as the integration of renewables, climate change, and technological advancements. NS Power has received several awards for its Asset Management practices.

11 Looking Ahead This SAMP is informed by through organization objectives as well as strategic undertakings such as the IRP and 10YSO, though much remains uncertain in the coming years. The transition to cleaner energy and integration of r...

AI summary The document discusses future energy strategies in Nova Scotia, including the transition from coal to cleaner energy sources, integration of renewables, and the role of emerging technologies like AI and SmartGrid. The aging hydroelectric fleet and the need for grid-scale energy storage and synchronous condensers are also highlighted.

- Regional Operations The increase of approximately $16.6 million from 2024CR to 2027F primarily relates to the increase of $14.6 million from 2024CR to 2026F. The $14.6 million increase in 2026F is attributable to - o Increased labour and...

AI summary The $16.6 million increase in Regional Operations costs from 2024CR to 2027F is mainly due to increased labour and contract costs, grid-scale battery operating costs, and additional equipment expenses. Factors include population growth, increased customer work requests, and the implementation of the Five-Year Reliability Plan.

Page 1 of 5 Exhibit DMM-3 DE PR EC IAB LE GR OU P BO OK RE SE RV E AS OF DE CE MB ER 31 , 20 23 CA LC UL AT ED AC CR UE D DE PR EC IAT ION AL G P RO CE DU RE DIF FE RE NC E AL G P RO CE DU RE CA LC UL AT ED AC CR UE D DE PR EC IAT ION EL G...

AI summary The table presents financial data related to energy storage equipment and distributed solar, including book values, calculated accrued depreciation, and differences in both general and electrical processes. It provides a snapshot of asset values and depreciation calculations as of December 31, 2023.

next phase of Nova Scotia's energy transformation will be complex and is made even more challenging given the current inflationary pressures and the affordability challenge facing many Nova Scotians. The cyber attack also presents a challe...

AI summary Nova Scotia's energy transformation faces challenges due to inflation and affordability issues, compounded by a recent cyber attack. Nova Scotia Power assures the Board that the GRA does not include cyber attack costs and emphasizes efforts to avoid rate increases, including financial arrangements and projects like the Maritime Link and Battery Energy Storage System.

i. DERMS Proposal On March 14, 2024, UI, together with Eversource, submitted a plan to allow multiple Distributed Energy Resource Management Systems (DERMS) to participate in the Energy Storage Solutions (ESS) Program. UI Order No. 19 Comp...

AI summary UI and Eversource submitted a plan to allow multiple DERMS to participate in the ESS Program, but UI failed to comply with the Authority's directive to develop a centralized DERMS platform in its next rate case application. UI attributes the non-compliance to PURA's reduction in operations and maintenance expenditures from its last rate case.

Avangrid GHG Emissions-Related Goals UI Supporting Actions GHG Scope 1 Emissions: • Rate of Return Ratio Comparison Between the Company's Proposal and Adjusted ACOSS with Alternative Revenue Allocation GHG Scope 2 Emissions: • Energy procu...

AI summary Avangrid outlines its GHG emissions reduction goals for scopes 1 and 2 by 2030, including initiatives such as energy efficiency, renewable electricity in corporate buildings, deployment of storage capacity aligned with Docket No. 22-06-05, investment in EV charging infrastructure aligned with annual RAM proceedings, and transitioning vehicle fleets to clean energy alternatives.

e OEB finds that the unfolding transition also presents opportunities for electricity utilities, particularly through increased demand for electricity and expanded investment in system infrastructure. For example, the growing electrificati...

AI summary The OEB acknowledges the opportunities presented by the energy transition for electricity utilities, including increased demand and investment in infrastructure. It also notes that existing regulatory tools like DVAs have mitigated financial risks and that current capital structure parameters remain appropriate without adjustment.

- energy storage (Massachusetts Department of Public Utilities, Docket Nos. D.P.U. 22-64, D.P.U. 22-65) - On behalf of the Nova Scotia Utility and Review Board, provided written testimony and reply testimony in the matter of Nova Scotia Po...

AI summary The text outlines various testimonies provided by the Nova Scotia Utility and Review Board and other regulatory bodies on energy-related matters, including rate applications, demand control tariffs, and procurement processes for offshore wind projects.

ver's Report Regarding Hawaiian Electric Companies' Request for Proposals for Renewable Dispatchable Generation and Energy Storage on O'ahu. For the Hawaii Public Utilities Commission (November 2025).

AI summary A report from a consulting firm regarding Hawaiian Electric Companies' request for proposals for renewable dispatchable generation and energy storage on O'ahu, submitted to the Hawaii Public Utilities Commission in November 2025.

Selected experience - Served as Consulting Expert on behalf of the Public Utilities Commission of Texas in assessing a proposed acquisition of Texas New Mexico Power by Blackstone, Inc. - Led efforts as Procurement Monitor on behalf of the...

AI summary The text outlines the professional experience of an individual who has worked as a consulting expert and auditor in various regulatory and energy-related proceedings across North America, including assessments of utility acquisitions, procurement monitoring, and market design analysis.

INNOVATION Hydro-Québec operates its own research center and works on developing a variety of technological innovations such as safe battery materials, energy storage systems, electrical powertrain systems and line maintenance robots. It a...

AI summary Hydro-Québec is involved in developing various technological innovations, including safe battery materials, energy storage systems, and line maintenance robots. It also collaborates with Ouranos, a climatology and adaptation innovation hub, through a specialized climate science research team.

5. Plan the maintenance and replacement of wooden poles to optimize their useful service life in light of extreme weather conditions ( cont'd ) Action Implementation Progress Other action areas affected In collaboration with Université du...

AI summary The text outlines actions to maintain and replace wooden poles in light of extreme weather conditions. It includes collaborative research projects, the installation of composite poles, feasibility studies for burying overhead lines, and research on alternatives to harmful wood preservatives.

18. Limit the impact of extreme weather events on the reliability of the overhead system (cont'd) Action Implementation Progress Other action areas affected Experiment with burying certain sections of the distribution system using a new ap...

AI summary The document outlines actions to reduce the impact of extreme weather on the reliability of the overhead distribution system. These include burying sections of the distribution system, outsourcing tasks during extreme weather, researching climate change impacts, improving service quality, assessing battery energy storage, revising emergency response plans, and continuing research on icephobic coatings.

FUNCTIONALIZATION OF OPERATING EXPENSES (1) SHORE POWER (2) GEN.REPL LOAD FOLL. (3) ELIADC (4) BUTU (5) SPILL (6) PRICING (6) REAL TIME REAL TIME REAL TIME PRICING (6) PRICING (7) OATT (8) TOTAL BTL (34) COGS - - (35) (36) DSM EXPENSES - -...

AI summary The text presents a table detailing the functionalization of operating expenses, including categories such as COGS, DSM expenses, FCR deferral, and depreciation across various assets like steam, hydro, wind, solar, and transmission and distribution infrastructure.

FOR APRIL 2026 (1) MWH SALES (2) ENERGY LINE LOSSES (3) ENERGY REQUIREMENT (4) CLASS NON- COINCIDENT DMD. (KW) (5) SYSTEM COINCIDENT FACTOR (6) SYSTEM COINCIDENT DMD. (KW) (7) DEMAND LINE LOSSES (8) SYSTEM COIN. PEAK DMD. (KW) (9) SYSTEM C...

AI summary The document presents a table with energy sales, losses, and demand metrics for April 2026. It includes sub-totals for different categories such as shore power, generation replacement, and real-time pricing, as well as a total before export and export sales.

FOR OCTOBER 2026 (1) MWH SALES (2) ENERGY LINE LOSSES (3) ENERGY REQUIREMENT (4) CLASS NON- COINCIDENT DMD. (KW) (5) SYSTEM COINCIDENT FACTOR (6) SYSTEM COINCIDENT DMD. (KW) (7) DEMAND LINE LOSSES (8) SYSTEM COIN. PEAK DMD. (KW) (9) SYSTEM...

AI summary The document presents a table with energy sales, losses, and demand metrics for October 2026, including total MWH sales, energy line losses, energy requirement, and system demand factors. It provides a comprehensive overview of electricity usage and system performance for the given period.

FOR DECEMBER 2026 (1) MWH SALES (2) ENERGY LINE LOSSES (3) ENERGY REQUIREMENT (4) CLASS NON- COINCIDENT DMD. (KW) (5) SYSTEM COINCIDENT FACTOR (6) SYSTEM COINCIDENT DMD. (KW) (7) DEMAND LINE LOSSES (8) SYSTEM COIN. PEAK DMD. (KW) (9) SYSTE...

AI summary The document presents a summary of energy sales, losses, and demand metrics for December 2026, including subtotals and totals before export. It details energy requirements, system demand factors, and losses across various categories.

(IN THOUSANDS OF DOLLARS) (1) TOTAL EXPENSES (2) PROD. EXPENSES (3) TRANS. EXPENSES (4) DIST. EXPENSES (5) RETAIL EXPENSES (6) DIRECT EXPENSES FCR DEFERRAL OTHER EXPENSES 0 0 0 0 0 0 (52) GRANTS IN LIEU OF TAXES DEPRECIATION: 51,549 21,165...

AI summary The table provides a detailed breakdown of expenses across various categories, including depreciation, steam, hydro, wind, solar, and transmission and distribution costs. It includes figures for different types of expenses such as production, transmission, distribution, and retail expenses, with specific amounts listed for each category.

FOR DECEMBER 2027 (1) MWH SALES (2) ENERGY LINE LOSSES (3) ENERGY REQUIREMENT (4) CLASS NON- COINCIDENT DMD. (KW) (5) SYSTEM COINCIDENT FACTOR (6) SYSTEM COINCIDENT DMD. (KW) (7) DEMAND LINE LOSSES (8) SYSTEM COIN. PEAK DMD. (KW) (9) SYSTE...

AI summary The document presents a table with various energy metrics for December 2027, including energy sales, losses, demand, and system factors. It outlines key parameters related to energy generation, distribution, and system performance.

EKs^Kd/WKtZ/E͘Ͳ,zZKWZKhd/KE ^/dKDD/^^/KE/E'^d/Dd^hDDZz&KZ^^dZd/ZDEdK>/'d/KE^;ZKͿ^dhz;LJ^LJƐƚĞŵͿ - x ŽŶƐƚƌƵĐƚĂĚĚŝƚŝŽŶĂůŵĂƚĞƌŝĂůůĂLJͲĚŽǁŶĂƌĞĂĂƐƌĞƋƵŝƌĞĚ͘ - x /ŶƐƚĂůůƐŝůƚ͕ĚĞďƌŝƐĂŶĚĞŶǀŝƌŽŶŵĞŶƚĂůĐŽŶƚĂŝŶŵĞŶƚƐ͕ƚĞŵƉŽƌĂƌLJƐĞĐƵƌŝƚLJĨĞŶĐŝŶŐ;ĐŚĂŝŶͲůŝŶŬ...

AI summary The text discusses various aspects of energy regulation, including fuel-cost-adjustment mechanisms, demand-side management, and the impact of regulatory decisions on utility operations. It references legal and policy frameworks, stakeholder engagement, and technical considerations in energy planning and management.

Summary Unnamed: 0 NOVA SCOTIA POWER, INC. Unnamed: 2 Unnamed: 3 Unnamed: 4 Unnamed: 5 Unnamed: 6 Unnamed: 7 Unnamed: 8 Unnamed: 9 Unnamed: 10 Unnamed: 11 Unnamed: 12 Unnamed: 13 Unnamed: 14 Unnamed: 15 Unnamed: 16 Unnamed: 17 Unnamed: 18...

AI summary The table presents financial and operational data related to Nova Scotia Power, Inc., including costs for land rights, structures, station equipment, and energy storage equipment. The data includes values such as amounts, percentages, and other metrics associated with different categories.

ave come into (2) Le paragraphe (1) est réputé être entré en vi- force on January 1, 2022. gueur le 1er janvier 2022. 92 (1) The portion of clause (d)(xviii)(A) of Class 92 (1) Le passage de la division d)(xviii)(A) de la 43.1 in Schedule...

AI summary This text outlines regulatory changes related to the storage and discharge of electrical energy, specifying that such energy must be generated from other property described in paragraph (c) or other subparagraphs of the same paragraph.

Activation of Reserves When a contingency occurs, the Transmission Provider will activate, at its sole discretion, sufficient reserves from (i) those under contract with the Transmission Provider, (ii) those provided by Transmission Custom...

AI summary The document outlines the activation of reserves by the Transmission Provider during contingencies, specifying sources of reserves and the responsibility of Transmission Customers to address supply deficiencies. Reserves are activated to minimize costs and restore system conditions, with service quality being firm for three hours post-contingency.

SPECIAL CONDITIONS - (1) The Company reserves the right to have a separate service agreement if in the opinion of the Company, issues not specifically set out herein must be addressed for the ongoing benefit of the Company and its customer...

AI summary The special conditions outlined in the document establish the Company's rights to enter into separate service agreements, customer obligations to maintain power supply integrity, and considerations for assessing system reliability. Transformer loss adjustments are also specified for meter readings.

Activation of Reserves When a contingency occurs, the Transmission Provider will activate, at its sole discretion, sufficient reserves from (i) those under contract with the Transmission Provider, (ii) those provided by Transmission Custom...

AI summary The document outlines the activation of reserves by the Transmission Provider during contingencies, emphasizing the use of contracted resources, customer-provided reserves, and third-party contracts. The activation aims to minimize costs and restore system conditions promptly, with specific service availability and responsibility guidelines for Transmission Customers.

Activation of Reserves When a contingency occurs, the Transmission Provider will activate, at its sole discretion, sufficient reserves from (i) those under contract with the Transmission Provider, (ii) those provided by Transmission Custom...

AI summary The document outlines the activation of reserves by the Transmission Provider during contingencies, specifying sources of reserves and the responsibility of Transmission Customers to address supply deficiencies within a defined timeframe. It emphasizes minimizing costs and restoring system conditions in accordance with NPCC and NERC guidelines.

SCHEDULE 9: REAL POWER LOSS FACTORS For Point-to-Point service, the Transmission Provider will seasonally calculate loss factors to be used on a path-by-path basis. For each season, winter and summer, the power flow models used to calculat...

AI summary Schedule 9 outlines the methodology for calculating real power loss factors for Point-to-Point and Network Service. Loss factors are determined seasonally and annually, with specific procedures for long-term service and new generation. These factors are posted on the OASIS site and are used to account for losses in transmission services.

16,145 16,145 - - - 3.7% 0.0% 0.0% 0.0% (48) WIND 12,948 12,948 - - - 3.0% 0.0% 0.0% 0.0% (49) SOLAR - - - - - 0.0% 0.0% 0.0% 0.0% (50) LM6000 6,832 6,832 - - - 1.6% 0.0% 0.0% 0.0% (51) GAS TURBINE - OTHER 2,805 2,805 - - - 0.6% 0.0% 0.0%...

AI summary The document presents a table with various energy generation and transmission categories, including wind, solar, and gas turbine data, along with percentages and monetary values. The table includes items such as LM6000, Generation Batteries, and Transmission - EHV and HV combined, with some entries having zero values or missing data.

ME POWER LOAD FOLL. ELIADC BUTU SPILL PRICING EBS RTR OATT TOTAL BTL

AI summary The text presents a table with various columns related to power, load, and energy management, including terms such as ELIADC, BUTU, SPILL, PRICING, EBS, RTR, and OATT, which are likely related to energy systems and market operations.

- - - (11) (12) POWER PRODUCTION (13) THERMAL OPERATING & MAINT. 27 1,538 (14) HYDRO OPERATING & MAINT. 1 49 (15) WIND - OPERATING & MAINT. 4 218 (16) SOLAR - OPERATING & MAINT. - - (16) BIOMASS - OPERATING & MAINT. 3 175 (17) LM6000 OPERA...

AI summary The text outlines various categories and associated costs related to power production and maintenance, including thermal, hydro, wind, solar, biomass, and combustion turbine operations, as well as fuel procurement and generation development.

2,966 GENERATION BATTERIES 0 RADIAL TO GENERATION TRANS. 2,627 (34) (35) NET THERMAL O&M D&E SPLIT $148,543 (36) (37) THERMAL O&M DMD. ALLOC. % 45.25% (38) THERMAL O&M ENG. ALLOC. % 54.75% (39) (40) BIOMASS DEMAND ALLOC % 45.25% (41) (42)...

AI summary The text provides a breakdown of various allocation percentages and financial figures related to generation, transmission, and distribution costs. It includes O&M (operations and maintenance) allocations for thermal, biomass, and wind energy, as well as property allocations for different segments of the power system.

0 0 (18) LM6000 PLANT 93,707 94,612 92,802 (19) LM6000 PLANT - CWIP 30 0 60 (20) LM600 ENVIRONMENTAL & FUEL CONVERSION PLANT 0 0 0 (21) LM600 Enviromental & Fuel Conversion - CWIP 0 0 0 (22) Check (23) Total Generation Plant bfr Gen-relate...

AI summary The document contains numerical data related to various plants, including the LM6000 Plant, LM600 Environmental & Fuel Conversion Plant, and ECEI Batteries Plant, with figures indicating costs and values over different periods.

THERMAL O&M D&E SPLIT $151,867 (36) (37) THERMAL O&M DMD. ALLOC. % 48.19% (38) THERMAL O&M ENG. ALLOC. % 51.81% (39) (40) BIOMASS DEMAND ALLOC % 48.19% (41) (42) BIOMASS ENERGY ALLOC % 51.81% (43) (44) NRIS ERIS (45) WIND O&M DMD. ALLOC. %...

AI summary The text presents a breakdown of operational and maintenance costs allocated between demand and energy for various thermal, biomass, and wind assets, as well as pole and wire allocations. It also includes general property allocations across different voltage levels and customer segments, with totals provided.

newable generation on the grid and maintain reliability. Forecast costs to maintain these grid-scale batteries are $970,583 in 2026 and $1,247,406 in 2027 [Exhibit N-23, Doane Grant Thornton IR-35]. [93] There is also a 42% forecast increa...

AI summary The document discusses the need for increased costs related to grid-scale batteries and Control Center labour expenses due to rising demand from Independent Power Producer (IPP) interconnection requests and regulatory processes. NS Power has responded by planning to add staff to meet these demands and ensure service quality.

d, with FFO to debt consistently below 10%, or We lowered our rating on parent Emera." It is perhaps worth emphasizing the term "consistently below 10%", in the quote above. [Exhibit N-36, pp. 12-13] [297] Morrison Park explained the conse...

AI summary The text discusses the potential financial implications of a credit rating downgrade for NS Power, including higher interest costs on bond issuances and financing for key projects. A downgrade could lead to increased costs for ratepayers, with estimates of up to $5 million annually and significant increases in financing costs for projects such as the Battery Energy Storage Project and the Wasoqonatl Transmission project.

Treatment of Battery Storage Battery storage is presently functionalized to transmission, but NS Power proposes that battery storage should be considered on a case-by-case basis to determine if the asset is primarily supporting a generatio...

AI summary NS Power proposes battery storage should be assessed on a case-by-case basis to determine if it primarily supports generation, transmission, or distribution. Current grid-scale batteries are argued to serve generation functions and should be classified based on system load factor.

Activation of Reserves When a contingency occurs, the Transmission Provider will activate, at its sole discretion, sufficient reserves from (i) those under contract with the Transmission Provider, (ii) those provided by Transmission Custom...

AI summary The document outlines the process for activating reserves during a contingency, specifying that the Transmission Provider will use reserves from contracted sources, Transmission Customers, or third parties. The goal is to minimize costs and restore system conditions within required timeframes, with Transmission Customers responsible for addressing supply deficiencies.

Request IR-35: - Reference: N-6 2026-2027 GRA Direct Evidence Appendix 7C Page 37-38 of 58 - Per N-6, (Appendix 7C), page 37-38 of 58, we understand that other goods & services expense - has increased from 2024 compliance restated to 2026...

AI summary The request seeks an explanation for the increase in other goods & services expenses from 2024 to 2026, attributed to grid-scale battery costs in regional operations. It asks for a breakdown of these costs.

Request IR-99: - Reference: Exhibit N-17, SR-04 Attachment 1, Lead-Lag Study - On pg. 19 of the lead-lag study it is noted that the significant increase in working capital related - to taxes is due to customers receiving the benefit of an...

AI summary The document requests clarification on NS Power's 2026 tax installments related to an Investment Tax Credit (ITC) refund in 2027 and the rationale for increased working capital tied to a clean energy storage project's ITC benefits. The inquiry highlights timing discrepancies between customer ITC benefits and company tax obligations.

1. The COSS Should Be Approved Consistent with the Consensus Agreement Prior to the current proceeding, NS Power's COSS has been subject to a full review only once since 1995. At paras. 56-57 of its November 29, 2011 decision approving NS...

AI summary NS Power's COSS has been reviewed periodically, with the Board directing updates in 2011 and 2022. The 2022 Settlement Agreement mandates a new COSS by 2025, reflecting developments like renewable integration, gas generation, and energy storage. The Board requires semi-annual progress reports starting 2024.

newable generation on the grid and maintain reliability. Forecast costs to maintain these grid-scale batteries are $970,583 in 2026 and $1,247,406 in 2027 [Exhibit N-23, Doane Grant Thornton IR-35]. [93] There is also a 42% forecast increa...

AI summary The document discusses the need for increased costs related to grid-scale battery maintenance, forecasting costs of $970,583 in 2026 and $1,247,406 in 2027. It also highlights a 42% increase in Control Center labour expenses due to rising IPP interconnection requests and the FAM Audit Dispatch Study. The Board acknowledges these increases as necessary for maintaining service levels and responding to customer demand.

isks. Morrison Park highlighted that "concrete steps to solve problems at NSPI – such as the securitization of the stranded FAM balances – was rewarded by the markets with lower yields on NSPI bonds". [319] NS Power has been in a precariou...

AI summary The text discusses NS Power's precarious financial situation following a credit rating downgrade to BBB- in late 2022, highlighting the potential for increased interest costs and penalties on debt, including projects like the Battery Energy Storage Project and the Wasoqonatl Transmission project.

ology has been comprehensively reviewed in a proceeding before the regulator. The last proceeding focused on cost-of-service methodologies that was before the NSUARB occurred in 2014 (2014 NSUARB 53). [574] Since then, there have been conc...

AI summary The document discusses the need to update NS Power's cost-of-service methodologies due to sector changes like decarbonization, renewable energy integration, and grid storage. The NSUARB directed a review of cost allocation methods, with NS Power's engagement process outlined in its application. The last review occurred in 2014, and updates are required by December 31, 2025.

Treatment of Battery Storage Battery storage is presently functionalized to transmission, but NS Power proposes that battery storage should be considered on a case-by-case basis to determine if the asset is primarily supporting a generatio...

AI summary NS Power proposes battery storage should be classified on a case-by-case basis depending on whether it primarily supports generation, transmission, or distribution. Current grid-scale batteries are argued to serve generation functions and should be classified based on system load factor.

Activation of Reserves When a contingency occurs, the Transmission Provider will activate, at its sole discretion, sufficient reserves from (i) those under contract with the Transmission Provider, (ii) those provided by Transmission Custom...

AI summary The document outlines the process for activating reserves during contingencies, specifying that the Transmission Provider will activate reserves from various sources, including contracted resources and third parties. The activation aims to minimize costs and restore pre-contingency conditions within required timeframes, with specific responsibilities for Transmission Customers.

1 A. (Coyne) I'm with you, Mr. Deveau. 14 Scotia Power's risk as we've been discussing it. But it's 15 certainly a positive development and part of the ongoing 16 positive work that we've been able to accomplish with our 17 both federal an...

AI summary Nova Scotia Power is involved in a project with government partners, and a special-purpose entity was created by legislation to assist with renewable energy goals. The Battery Energy Storage Project was also submitted to the Board and received support from Natural Resources Canada.

1 I realize it's not a huge amount, but 2 the I understand from the IRs that I think the issue 3 here was that they were not projected in 2024 because you 4 thought they'd be charged at capital. I think you might 5 have just mentioned that...

AI summary The discussion centers on the ECEI initiative and an increase of 700,000 in the 2022 GRA, referencing multiple projects including a transmission project, a large wind project, and battery storage under the ACE Plans.

1 Chair. 14 attributable to a capital asset, and that would be charged 15 to the project. This would be separate and apart from 16 that. This would be the operational support. So this 17 would be associated with assets that had previously...

AI summary The discussion revolves around the allocation of costs related to capital assets and operational support, distinguishing between expenditures directly tied to asset installation and those associated with prior work or design. Nova Scotia Power is not proceeding with a large wind project, and references are made to a report from Grant Thornton.