Topic:"Energy Storage" in M12247

For Action Plan/Roadmap Items with the most recent updates included in the Path to 2030 document filed with the 2025 ACE Plan in December of 2024, please see the references below (UARB Matter M12012): Action Plan/Roadmap Item Topic Path to...

AI summary The document outlines updates to the Action Plan/Roadmap Items included in the Path to 2030 document, filed with the 2025 ACE Plan. It references specific sections and pages from the document, including topics such as regional integration, electrification strategy, wind procurement, and demand response programming.

PARTIALLY CONFIDENTIAL (Attachment Only) 1 Request IR-3: 2 3 RE: Roadmap Item 2 4 5 (a) Please provide a summary of NS Power's seasonal fuel price forecast through 2030. 6 7 (b) Please provide a discussion of the current operational practi...

AI summary The response to Request IR-3 outlines NS Power's seasonal fuel price forecast through 2030, discusses the dispatch of natural gas, HFO, and LFO based on market prices and environmental policy targets, and refers to an IRP assumptions document for sustaining capital investment in thermal units.

2025 Evergreen IRP Action Plan and Roadmap Update (NSEB M12247) NSPI Responses to Consumer Advocate Information Requests 1 Request IR-5: 2 3 RE: Action Plan Item 3 4 5 (a) Please provide an update on the status of the fast-acting generatio...

AI summary The document outlines information requests related to the 2025 Evergreen IRP Action Plan and Roadmap Update, focusing on the status of fast-acting generation capacity, the role of NSIESO, potential delays, gas-fueled combustion turbine contracts, and the evaluation of battery storage versus fast-acting generation.

NON-CONFIDENTIAL 1 Request IR-1: 2 3 Please provide an update on the Effective Load Carrying Capacity Study (ELCC) in general, 4 and as it relates to Battery Energy Storage Systems (BESS), and Long Duration Energy 5 Storage (LDES). Has the...

AI summary The document requests an update on the Effective Load Carrying Capacity (ELCC) study, focusing on Battery Energy Storage Systems (BESS) and Long Duration Energy Storage (LDES). The response indicates the new study will examine the interactive effects of clean resources, including BESS and LDES, and updates to the scope based on stakeholder feedback. Details are referenced in NSEB IR-9.

NON-CONFIDENTIAL Request IR-4: Please describe how the IRP model optimizes for renewable curtailment versus building new storage. Please describe what factors the IRP model would consider before selecting energy storage to charge or discha...

AI summary The IRP model optimizes resource selection by evaluating factors like firm capacity, effective load carrying capability (ELCC), renewable energy contribution, ramp rates, and costs (capital, fuel, emissions). It prioritizes economic efficiency, considering curtailment costs of renewables and dispatching BESS to minimize energy supply costs while meeting environmental targets and system reliability.

Curtailment Peak Day 2030-07-05 Installed Capacity (MW) Curtailment Peak Day 2035-05-05 Ins talled Capa city (MW) 2035 Coal Gas - Existing Gas - New CTs & Recips Gas - Conversion Diesel CTs Domestic Hydro Tidal Biomass Wind Solar Maritime...

AI summary The document presents a table detailing installed capacity and generation data for various energy sources on a curtailment peak day in 2035. It outlines the contribution of different energy sources such as coal, gas, wind, solar, and battery storage, with a total installed capacity of 5785 MW.

NON-CONFIDENTIAL 1 Request IR-1: 15 outcomes from that process include the benefits the Reliability Intertie provides to the 16 system by enabling the integration of greater levels of intermittent renewable generation. 17 The development o...

AI summary The text discusses the benefits of the Reliability Intertie in integrating intermittent renewable generation, supporting the provincial Clean Power Plan, and minimizing renewable curtailment. It also mentions battery energy storage systems and fast-acting generation as part of a portfolio to support renewable energy integration.

[nspi-combined-interconnection-request-queue(pdf).pdf](https://www.nspower.ca/docs/default-source/pdf-to-upload/nspi-combined-interconnection-request-queue(pdf).pdf?sfvrsn=d56d149_88) IR SIS Status COD 16 (a) NS Power is not currently asse...

AI summary The document discusses an Interconnection Request (IR-8) related to a pumped hydro energy storage project by St. Barbara and Natural Forces. The project has a capacity of 80 MW for 7 hours and is anticipated to be less expensive than similar installations. The Integrated Resource Plan (IRP) and the NSIESO are mentioned in relation to future considerations of emerging technologies.

NON-CONFIDENTIAL 1 Request IR-3: 2 3 Please describe the current IRP results for installed energy storage capacity (e.g., Battery 4 Energy Storage Systems (BESS), Pumped Storage Hydro (PSH), and Long Duration Energy 5 Storage (LDES) (MW an...

AI summary The document discusses Nova Scotia Power's Integrated Resource Plan (IRP) results for energy storage capacity by 2030 and 2035, including Battery Energy Storage Systems (BESS), Pumped Storage Hydro (PSH), and Long Duration Energy Storage (LDES). It also mentions the assumptions used in the IRP analysis and how they have been updated recently.

NON-CONFIDENTIAL 1 Request IR-5: 2 3 What factors, related to the technical capabilities of an energy resource, affect its selection 4 by the model? For example, does a resource's ramp-rate, or capability to provide inertia 5 support affec...

AI summary The response to Request IR-5 outlines that factors affecting the selection of an energy resource in a model include technical capabilities such as ramp rate, inertia, and storage capacity, as well as economic factors like capital cost, fuel price, and emissions cost. These factors vary by resource type and influence dispatch order.

NON-CONFIDENTIAL Request IR-6: Please describe how the province's needs for load variation, frequency regulation, and other ancillary services (including black-start) are expected to change from today to 2030 and 2035? To the extent possib...

AI summary The response outlines how the province will manage load variation, frequency regulation, and ancillary services up to 2030 and 2035. It highlights the role of BESS, wind curtailment, fast-acting generation, and the Maritime Link in managing frequency regulation. Black start capabilities will be enhanced with new generation and potential connections to Newfoundland. Reactive power management will also be improved with new infrastructure.

NON-CONFIDENTIAL 1 Request IR-1: 2 3 On page 13 regarding pooling allowable emissions, NS Power stated: 4 5 The ability to share emissions "room" amongst units allows for: 6 7 • The shift of dispatch to our lower cost and lower emitting un...

AI summary The document discusses the concept of 'emissions room' and its implications for NS Power's operations, including the shift to lower cost and lower emitting units, reduction in capital expenditures for new CTs, and its impact on the preferred resource plan. NS Power clarifies that 'emissions room' refers to managing total allowable emissions across a unit pool to achieve lower emissions and costs for customers.

NON-CONFIDENTIAL 1 Request IR-4: 18 as a sensitivity where Direct Air Carbon Capture (DACC) was modeled at $500/tonne.1 19 20 (b) Please see part (a). 1 Request IR-9: 2 3 Refer to Exhibit N-1, 2025 Evergreen IRP, page. 16 of 42, stating th...

AI summary The text discusses the anticipated incremental system costs associated with meeting the Carbon Emissions Reduction (CER) targets, particularly focusing on the 2035 scenario. These costs are attributed to the need for additional resources such as variable renewable generation, combustion turbines, and battery energy storage systems (BESS), as well as the carbon tax on emissions. The analysis indicates an additional $100 million in incremental costs for the 2035 net-zero scenario compared to the 2050 scenario.

NON-CONFIDENTIAL 1 Request IR-1: 8 resource pathway contained in Figure 1 - 2030 Clean Power Plan Resources of the 9 "The Path to 2030 - 2024 Update". 10 11 (b) Summarize the additional resource builds and timing in Figure 1 that this Acti...

AI summary The response to Request IR-1 confirms that there are no changes in the resource build or timing in the updated IRP Action Plan relative to the 2024 Update to The Path to 2030, filed in M12012. The request also inquires about specific resource pathways, battery energy storage, and timing of fast-acting generation resources.

(c) NS Power is not aware of how the NSIESO will determine the specific quantity or timing of new battery energy storage resources. (d) The Clean Power Plan indicates up to 600 MW of new fast acting generation by 2030. This is in alignment...

AI summary NS Power is unaware of how the NSIESO will determine the quantity and timing of new battery energy storage resources. The Clean Power Plan aligns with the 2025 10-Year System Outlook report, which highlights the need for up to 600 MW of new fast acting generation by 2030, based on the most recent load forecast and the 2023 Evergreen IRP.

Request IR-3: Reference: The Path to 2030 - 2024 Update, Figure 1 - 2030 Clean Power Plan Resources, page 7, including footnotes 3 and 4; and Figure 2 – Nova Scotia's 2030 Clean Power Plan (October 2023), page 14. 16 - a. Confirm, or expla...

AI summary Request IR-3 seeks clarification on the alignment of the updated Action Plan with the 2030 Clean Power Plan, specifics of battery storage modeling, and discrepancies in timing for Stage 2 fast-acting generation resources between the IRP and Clean Power Plan timelines.

13 Request IR-5: - 17 (a) Please provide an update on the status of the fast-acting generation capacity. - 19 (b) What is the role of the NSIESO in planning and procuring the fast-acting generation 20 resources? - 22 (c) Is the fast-acting...

AI summary Request IR-5 seeks updates on fast-acting generation capacity status, NSIESO's role in planning/procuring resources, delays in timelines, gas turbine contract delivery periods, market assessments, and NS Power's evaluation of BESS vs fast-acting generation investments. Questions focus on scheduling, procurement processes, market dynamics, and infrastructure planning.

24 June, 2024 NOVA SCOTIA ENERGY BOARD C/O CRYSTAL HENWOOD ([email protected]) Dear Ms. Henwood, M12247 - NS Power: Evergreen IRP Action Plan and Roadmap Update Please accept this letter as Information Requests for Nova Scotia...

AI summary Energy Storage Canada (ESC) requests information from Nova Scotia Power regarding the Evergreen IRP Action Plan, including updates on the Effective Load Carrying Capacity (ELCC) study, Renewable Electricity Standard (RES) contributions, thermal asset generation profiles, IRP model optimization for renewable curtailment, and historical renewable curtailment data for 2022-2024.

r to act as a natural battery. The St. Barbara Release states that - the feasibility study confirmed the system capacity is 80 MW for 7 hours (40 MW for 14 - hours) and the overall cost of the project is anticipated to be less than similar...

AI summary The text references a feasibility study of a pumped storage project with a capacity of 80 MW for 7 hours (40 MW for 14 hours) and lower costs than similar installations. It asks NSPI if they have additional knowledge of the project and whether they have studied pumped storage as part of their system planning.

- 27 (c) Is NSPI aware of the basis for comparison in referring to "similar 28 installations? Is this battery energy storage system (BESS)? 1 (d) If this were feasible and cost-effective, is it the NSIESO which would be 2 conducting any fu...

AI summary The text raises questions about Nova Scotia Power Inc.'s (NSPI) awareness of the basis for comparison in referring to similar installations, specifically whether the system in question is a battery energy storage system (BESS). It also inquires about the role of the Nova Scotia Independent Electricity System Operator (NSIESO) and NSPI in future energy storage procurement.

(902) 422-9663 [[email protected]](mailto:[email protected]) WWW.NATURALFORCES.CA TO: The Nova Scotia Energy Board ("Board") Date: June 24, 2025 RE: M12247 - NS Power: Evergreen IRP Action Plan and Roadmap Update To whom it may conc...

AI summary The letter submitted to the Nova Scotia Energy Board includes formal information requests regarding the Evergreen IRP Action Plan and Roadmap Update. It seeks data on generation capacity, supply mix, wind power and energy storage scenarios, and assumptions used in the IRP analysis for various energy storage technologies.

Nova Scotia should conduct an updated Evergreen IRP as soon as possible Given that NSPI has not conducted new modeling in the IRP matter since the 2022/2023 Evergreen IRP study,[2](#page-2-1) it will be important not to delay the process o...

AI summary The document argues for an immediate update to the Evergreen IRP due to NSPI's lack of recent modeling and the transition of IRP responsibilities to NSIESO under Bill 404. Six key factors, including load forecasts and battery storage, need updating for the 2030 resource plan.

2.BACKGROUND On April 30, 2025, NSPI filed its 2025 Evergreen IRP Action Plan and Roadmap Update. In this update, NSPI provided an update on electricity planning environment changes, an update on the Action Plan and Roadmap items to date,...

AI summary NSPI filed its 2025 Evergreen IRP Action Plan Update, referencing the Path to 2030 document and relying on prior modeling. The update includes resource pathway planning, electrification strategies, wind procurement, battery storage, and demand response. Resource trajectories are updated based on load forecasts from 2022–2025, with no new capacity modeling conducted.

030 (600 MW, 650 MW, and one accelerated electrification scenario with 900 MW). - d. Develop procurement plan for incremental renewable energy resources, targeting approximately 1000 MW by 2030. 14 The Electrification Report was published...

AI summary NS Power's 2023 Evergreen IRP outlines targets for renewable energy procurement (1000 MW by 2030), coal-to-gas conversions, battery storage (100 MW by 2030), and demand response programs (75 MW by 2025). It also addresses synchronous condenser development and DSM avoided cost updates. The Reliability Tie transmission project (Matter M12217) is highlighted as a key initiative.

2025 10-Year System Outlook, pages 45-46, "The capacity additions and retirements are in alignment with the CE1-E1-R2 Evergreen IRP scenario and the Province of Nova Scotia's 2030 Clean Power Plan." from New Brunswick, the current relative...

AI summary The 2025 10-Year System Outlook report shows a 25% reserve margin by 2029/2030, indicating a 119 MW surplus, but NS Power has not adjusted its capacity plans. The report does not address potential impacts of battery storage, ELCC parameter changes, or the Net Zero Atlantic study on 2030 resource needs, despite these factors possibly reducing peak load forecasts.

(902) 422-9663 [[email protected]](mailto:[email protected]) WWW.NATURALFORCES.CA TO: The Nova Scotia Energy Board ("Board") Date: August 19, 2025 RE: M12247 - NS Power: Evergreen IRP Action Plan and Roadmap Update To whom it may co...

AI summary Natural Forces submits an intervenor letter regarding NS Power's Evergreen IRP update, highlighting their 80 MW PSH project at Touquoy Gold Mine and recommending an updated IRP to address firm capacity uncertainties and incorporate BESS resources, as advised by Synapse.

19 August, 2025 NOVA SCOTIA ENERGY BOARD C/O CRYSTAL HENWOOD ([email protected]) Dear Ms. Henwood, RE: Intervenor Submission – Evergreen IRP Action Plan & Roadmap Update (M12247) Energy Storage Canada (ESC) is the national trad...

AI summary Energy Storage Canada (ESC) submits that curtailed renewable electricity in 2030 presents an opportunity to enhance energy security through storage. ESC supports Synapse's call for evaluating alternatives to fossil fuels, recommending lithium-ion batteries, pumped storage, compressed air, and thermal storage as firm capacity options.

those activities, such that there is no gap in work required to set-up the NSIESO for success. Namely, NS Power will continue to advance work on the Effective Load Carrying Capacity (ELCC) study, as well as continued participation in the N...

AI summary NS Power highlights ongoing efforts to prepare the NSIESO for success, including the ELCC study and participation in the Net Zero Atlantic Hybrid Peak study. It also references the Evergreen IRP and PLEXOS modeling from previous proceedings, such as the Reliability Intertie application (M12217), to support its planning assumptions and modeling accuracy.

preferred plan and all other resource plans, CT capacity continues to be added across the planning horizon, including an additional 150 MW by 2033 in the preferred plan, bringing the total to 620 MW. • When the Load Forecast was updated in...

AI summary The text discusses the need for additional firm capacity in Nova Scotia's electricity system, citing updates to the Load Forecast and the 10-Year System Outlook Reports. It highlights that 600 MW of firm capacity was needed in 2030 to maintain the target 20 percent Planning Reserve Margin (PRM), and that this requirement has decreased slightly to 500 MW in the 2025 report due to planned renewable generation and storage additions.

7.0 ENERGY STORAGE CANADA SUBMISSION ESC provided three points in its submission related to curtailment, consideration of various battery - technologies, and energy security. NS Power takes no position and offers no submissions on ESC's -...

AI summary Energy Storage Canada (ESC) submitted three points regarding curtailment, battery technologies, and energy security. Nova Scotia Power (NS Power) did not take a position or provide submissions on ESC's comments, which may be considered by the Nova Scotia Independent Energy System Operator (NSIESO) in its Integrated Resource Plan (IRP) update.

DATE FILED: September 4, 2025 Page 17 of 19 1 8.0 NATURAL FORCES SUBMISSION 2 3 Natural Forces submission highlights its Pumped Storage Hydro project and provides three related 4 requests: 5 6 • Natural Forces asks that the Board broadens...

AI summary Natural Forces submitted a request to the Board to broaden Synapse's modelling recommendations in the next Integrated Resource Plan (IRP) to include non-BESS storage, specifically the Touquoy Pumped Storage Hydro project. It also requested guidance on considering a project's contribution to sustainable prosperity and ensuring the IRP enables energy resources to maximize their value-stack and monetize ancillary services. NS Power noted that these requests are directed to the Board and will be addressed by the NSIESO in the context of the next IRP.

NS Power's IRP-related studies and activities Synapse expressed concerns that NS Power has not conducted new IRP modeling since the 2022/2023 Evergreen IRP study and that it is important not to delay the process of conducting the next IRP...

AI summary Synapse urged NS Power to complete pending studies for the next Integrated Resource Plan (IRP), citing delays in updating core assumptions. Six factors, including load forecasts, battery storage, and New Brunswick import capacity, require urgent attention to inform the 2030 resource plan. The 2022/2023 Evergreen IRP study's limitations were highlighted as a barrier to timely planning.

May 28, 2026 Crystal Henwood Clerk of the Board Nova Scotia Energy Board 1601 Lower Water Street, 3rd Floor Halifax, NS B3J 3S3 Re: M12247 – Nova Scotia Power Inc. – 2025 Evergreen IRP Action Plan and Roadmap Update Dear Ms. Henwood: On Ap...

AI summary Nova Scotia Power Inc. (NS Power) submitted its 2025 Evergreen Integrated Resource Plan (IRP) Update to the Nova Scotia Energy Board (NSEB). The NSEB directed NS Power to complete the Effective Load Carrying Capacity (ELCC) study and participate in the Net Zero Atlantic Hybrid Peak study, with updates due by May 31, 2026. Stakeholders including Synapse, Consumer Advocate, and Energy Storage Canada provided comments on the IRP Update.