N-12026 10-Year System Outlook Report
9 passages
1 INTRODUCTION IESO Nova Scotia was established under the More Access to Energy Act as the province's independent system operator, responsible for resource planning, including resource adequacy assessments, transmission planning, and procu...
AI summary IESO Nova Scotia, established under the More Access to Energy Act, is responsible for resource planning and transmission planning. This document outlines the inaugural 10-Year System Outlook, with filing requirements for the Load Forecast and 10YSO reports, previously managed by NS Power and now under IESO Nova Scotia.
3.2 Changes in Capacity The basis for the 2026 10-Year System Outlook resource plan is the Government of Nova Scotia's 2030 Clean Power Plan and NS Power's Evergreen IRP scenario CE1-E1-R2 (net zero 2035, current policy and trends electrif...
AI summary The 2026 10-Year System Outlook resource plan is based on the Government of Nova Scotia's 2030 Clean Power Plan and NS Power's Evergreen IRP scenario. It anticipates a net increase in installed capacity of 2,804 MW and firm capacity of 370 MW over the next 10 years, supporting decarbonization goals and 80% renewable energy electricity sales by 2030.
3.2.2 Green Choice Program & Additional Energy Procurements The Green Choice Program (GCP) was established by the Government of Nova Scotia in April 2022 following amendments to the Electricity Act . [14](#page-12-1) In June 2025, two (2)...
AI summary The Green Choice Program (GCP) was established in 2022 and has procured 262 MW of wind energy from two projects expected to be operational by 2028. NS Power has identified the need for an additional 350 MW of wind generation to meet 2030 renewable energy targets, with a second procurement round announced in 2026. A further 1,200 MW of wind capacity is included in the 2030-2036 10-Year System Outlook.
3.2.7 Firm Imports — New Brunswick On May 28, 2026, the New Brunswick Energy and Utilities Board approved NB Power's Renewable Integration Grid Stability (RIGS) project. [26](#page-14-4) The project will provide IESO Nova Scotia with acces...
AI summary On May 28, 2026, the New Brunswick Energy and Utilities Board approved NB Power's RIGS project, providing IESO Nova Scotia with 100 MW of firm generation capacity starting as early as 2028. This capacity is included in the Resource Plan for Winter 2028/2029 under a 10-year agreement.
Table 3: Additions and Retirements in the 10-Year System Outlook Resource Plan Additions Retirements Winter Generation Type Name Installed Capacity (MW) Firm Capacity (MW) Name Retired Capacity (MW) Wind Rate Base Procurement 273 54.5 Wind...
AI summary Table 3 outlines the additions and retirements in the 10-Year System Outlook Resource Plan, detailing wind, solar, battery storage, and other generation and demand response resources for various years from 2026/2027 to 2035/2036, along with retirements such as coal-to-gas conversions and coal plants.
3.3.1 Planning Reserve Criteria The Planning Reserve Margin (PRM) is intended to maintain sufficient resources to reliably serve firm customers during periods of grid stress. Unit forced outages, higher than forecast demand, and lower than...
AI summary The Planning Reserve Margin (PRM) is a critical criterion for ensuring reliable power system operation during grid stress. IESO Nova Scotia must comply with NPCC reliability criteria, which require a loss of load expectation (LOLE) of no more than 0.1 days per year. A 20% PRM target was confirmed as appropriate in the 2020 Integrated Resource Plan (IRP).
Planning Reserve Margin The PRM target of 20% is met from 2026/2027 through to 2033/2034, but currently falls below the target in the final two years of the outlook, indicating additional firm capacity will be required in the outer years....
AI summary The Planning Reserve Margin (PRM) target of 20% is met from 2026/2027 through 2033/2034, but falls below the target in the final two years, indicating a need for additional firm capacity. The 2026 Integrated Resource Plan (IRP) will determine the optimal types, quantities, and timing of new resources to meet PRM in all years.
4.3 Clean Electricity Regulations On December 18, 2024 the Clean Electricity Regulations (CER)[35](#page-21-3) were published in Canada Gazette II (CG2). In May 2026, a new National Electricity Strategy[36](#page-21-4) was launched by the...
AI summary The Clean Electricity Regulations (CER) were published in December 2024, and a new National Electricity Strategy was launched in May 2026, aiming to adjust the CER to enable faster sector growth and provide flexibility to offset residual emissions. IESO Nova Scotia will monitor developments and make necessary adjustments, including in the 2026 Integrated Resource Plan.
Table 9: Transmission Project List 2026-2036 Project Type Location Year Status Project Description 2026 Line Upgrade L6531 2026 Planned L6531 Thermal Upgrade to 60 deg C 2027 Line Rebuild L6004 2027 Planned L6004 Thermal Upgrade (75 deg C...
AI summary Table 9 outlines a list of planned transmission projects in Nova Scotia from 2026 to 2036, including line upgrades, rebuilds, new capacitor banks, transformer replacements, and new lines. These projects aim to enhance grid reliability and capacity in response to load studies and future energy demands.
N-3IESO (IG) RIR 1 to 4
5 passages
Request IR – 1 2 Reference: Section 3.2.5 Battery Energy Storage Systems pdf page 15. - a) Please confirm whether the recent announcements by IESO-NS confirming the expansion and acceleration of the battery storage procurement affects the...
AI summary The document requests confirmation on whether recent battery storage procurement announcements by IESO-NS affect the 10-Year Outlook Resource Plan. The request references a specific section of a document discussing battery energy storage systems.
Response IR - 1 - a,b) The expansion and acceleration of IESO Nova Scotia's second procurement process is aligned with the resource plan identified in the 2026 10 Year System Outlook. - c) The commissioning of 150 MW of BESS capacity in 20...
AI summary IESO Nova Scotia's second procurement process is aligned with the 2026 10 Year System Outlook and the Clean Power Plan. The commissioning of 150 MW of BESS capacity in 2025 and 2026 partially meets the 300-400 MW energy storage target. The procurement process will refine the optimal capacity, timing, and technology for future resources.
- a) Please provide a status update on each of the projects listed in Table 8 and the System Impact Studies being completed, and whether IESO-NS has any updated new large load interconnection requests since the completion of this report in...
AI summary The questions focus on the status of projects in Table 8, their load classifications, system impact analyses, reliability impacts, integration into load forecasts, and implications for system peak, net system requirement, and planning reserve margin.
Response IR - 2 - a) System Impact Studies (SIS) are complete for IRL02 and IRL03. All others are ongoing. - No additional transmission load interconnection requests have been validated since the - publication of the 2026 10 Year System Ou...
AI summary IESO Nova Scotia has completed System Impact Studies for IRL02 and IRL03, with other studies ongoing. No new transmission load interconnection requests have been validated since the 2026 10 Year System Outlook report was published.
NON-CONFIDENTIAL b) Table 8 lists load projects which have requested a transmission interconnection study from IESO Nova Scotia. Tariff class is determined by the Load Serving Entity and this directly informs whether portions of the load c...
AI summary The document outlines that IESO Nova Scotia does not analyze how changes in system demand impact individual tariff classes, as this is the responsibility of Load Serving Entities. It also notes that the 2026 Integrated Resource Plan will assess the impact of adding large loads to the system, while the 20% planning reserve margin target is not expected to change.
N-4IESO (NSEB) RIR 1 to 19
11 passages
- 6 values are based on the 2026 ELCC Report 1 . Additions Winter Generation Type Name Installed Capacity (MW) Firm Capacity (MW) Marginal ELCC Wind Rate Base Procurement 273 54.5 20% 2026/2027 Wind Renewable to Retail 36 7.2 20% 2026/2027...
AI summary The text presents a table of wind generation additions and their associated capacity values based on the 2026 ELCC Report. It includes details such as installed capacity, firm capacity, and marginal ELCC for various projects and years. The document also references a study by the Nova Scotia Independent Energy System Operator (IESO Nova Scotia) in response to information requests from the Nova Scotia Energy Board (NSEB).
Request IR – 5 - Pdf page 13 of the report states that the fast-acting generation requirement changed from 600 - MW to 450 MW compared to the last NS Power Integrated Resource Plan (IRP). Please explain - what changes in conditions resulte...
AI summary The fast-acting generation requirement was reduced from 600 MW to 450 MW due to an agreement with NB Power for a 100 MW firm import from their RIGS project. This change was influenced by the 2023 Evergreen IRP and will be further refined in the 2026 IRP.
NON-CONFIDENTIAL 1 Request IR – 8 - Table 3, pdf page 15, of the report identifies additions and retirements over the next 10 years.
AI summary The text references a table in a report that outlines additions and retirements over the next decade, likely related to energy or infrastructure planning.
- Table 4, pdf page 18, of the 10-Year Load and Resource Outlook. - a) Please explain whether the firm capacity values listed in Table 3 and the firm resource additions listed in Table 4 are based on Effective Load Carrying Capacity (ELCC)...
AI summary The document requests an explanation regarding the basis of firm capacity values in Table 3 and Table 4 of the 10-Year Load and Resource Outlook, specifically whether they are based on Effective Load Carrying Capacity (ELCC) or nameplate values, and whether they reflect changes in ELCC percentages over time.
Response IR - 10 - a) IESO Nova Scotia does not have firm start and end dates for the conversion projects but understands that the identified conversion projects can be completed in between Winter periods. Based on the 2023 Evergreen IRP S...
AI summary IESO Nova Scotia outlines the anticipated timeline for conversion projects, noting that they will occur outside of winter periods and will be refined in the 2026 IRP. The projects are expected to be completed before winter periods, reducing the need for replacement energy and capacity.
Request IR – 11 - Referencing IESO Nova Scotia's 10-Year Load and Resource Outlook: - Pdf page 18 states that the PRM will fall below the 20% target in the final two years of the - outlook, which indicates that additional firm capacity wil...
AI summary The text references the IESO Nova Scotia's 10-Year Load and Resource Outlook, noting that the Installed Capacity Planning Reserve Margin (PRM) is projected to fall below the 20% target in the final two years, indicating a need for additional firm capacity. It requests confirmation on whether the 2020 Integrated Resource Plan (IRP) analysis could satisfy the Loss of Load Expectation (LOLE) criteria with a PRM below 20% and a reproduction of Table 4 showing demand-side management (DSM) forecasts.
Response IR - 11 - a) For Winters 2030/2031 to 2035/2036 the resource additions shown in Table 4 match those from 2023 Evergreen IRP scenario CE1-E1-R2. With the updated 2026 load forecast, the load and resource table now shows the PRM dro...
AI summary The resource additions for Winters 2030/2031 to 2035/2036 align with the 2023 Evergreen IRP scenario CE1-E1-R2. However, with the updated 2026 load forecast, the PRM is expected to drop below 20% in 2034/2035 and 2035/2036. The IESO will procure resources as needed to maintain the 20% PRM, with any required resources identified in the 2026 IRP and future System Outlook reports.
Request IR – 12 - Please provide graphs showing historical and predicted annual system peak and annual net - system requirement values for review, including the past 10 years and next 10 years, similar to - Figures 1 and 2 in the 2025 10-Y...
AI summary The request asks for historical and predicted annual system peak and net system requirement values for the past and next 10 years, similar to figures in the 2025 10-Year System Outlook. The response refers to the 2026 Load Forecast Report and notes that certain loads are not included in the energy requirement calculations.
NON-CONFIDENTIAL - 1 Request IR – 13 - 2 Please convert the existing Figures 1 and 2 graphs into a table that indicate firm capacity changes - 3 for 2027 through 2036, including detailed resource types and capacities. - 4 Response IR - 13...
AI summary The document contains a request and response related to converting graphs into a table showing firm capacity changes from 2027 to 2036, including resource types and capacities. The response directs to Table 3 in the 2026 10 Year System Outlook report.
a) See table below. Analysis noted as "NSPI" predates IESO Nova Scotia and was performed by NSPI. "IESO-NS Western Valley Load" is an IESO Nova Scotia analysis that identified the associated project. Project Type Location Year Analysis Pro...
AI summary The text outlines various infrastructure projects scheduled for 2026 to 2028, including line upgrades, rebuilds, capacitor bank installations, and breaker additions. These projects are analyzed by NSPI and IESO Nova Scotia. The document also notes responses by IESO Nova Scotia to information requests from the Nova Scotia Energy Board.
c) See table below for the information requested: Project Type Terminal Points Year Analysis Project Description 2026 Line Upgrade L6531, 50W Milton to 99W Bridgewater 2026 IR 677 SIS L6531 Thermal Upgrade to 60 deg C 2027 Line Rebuild L60...
AI summary The document provides details on two infrastructure projects: a thermal upgrade of Line L6531 in 2026 and a thermal upgrade of Line L6004 in 2027. These projects are part of the Integrated Resource Plan (IRP) and involve specific improvements to transmission lines.
N-5IESO (NSPI) RIR 1 to 6
5 passages
Request IR – 1 - a) How will the results of the current Integrated Resource Plan (IRP) that is underway be reflected in, or incorporated into, future 10-Year System Outlook (10YSO) Reports? - b) Where differences arise between the conclusi...
AI summary The response to Request IR-1 explains that the 2026 Integrated Resource Plan (IRP) will be the central planning scenario for future 10-Year System Outlook (10YSO) Reports. The IRP will be the primary basis for resource procurement decisions, while the 10YSO serves as an annual checkpoint to ensure alignment with planning assumptions and reserve margin targets.
Request IR – 2 - Reference: 2026 10-Year System Outlook Report, 3.3.2 Load and Resources Overview, Table 4: - IESO-NS 10-Year Load and Resource Outlook, page 18. - Table 4 identifies resources including fast-acting generation, firm imports...
AI summary The document requests the IESO-NS to describe contingency plans and alternative measures if the procurement, development, or in-service dates of necessary resources, such as fast-acting generation and battery storage, are delayed. This is in the context of retiring coal resources and ensuring firm capacity needs are met.
Response IR - 2 - the in-service dates for the identified projects is delayed the corresponding unit retirement will similarly need to be delayed until replacement capacity is online and reliable operation is established. The only scenario...
AI summary The response discusses potential delays in project in-service dates and the need to delay unit retirements until replacement capacity is operational. It highlights that capacity shortfalls could occur if load growth exceeds forecasts, but the 20% Planning Reserve Margin is maintained to address unanticipated demand variations.
1 Request IR – 3 - 2 Please provide a list of all resource additions in the 10YSO that are being treated as fixed inputs - 3 in the current IRP and a list of all resource additions that will be evaluated through the current - 4 IRP process...
AI summary Nova Scotia Power Incorporated (NSPI) has requested a list of all resource additions in the 10-Year System Outlook (10YSO) treated as fixed inputs in the 2026 Integrated Resource Plan (IRP) and those to be evaluated through the current IRP process. IESO Nova Scotia refers to specific slides in the 2026-IRP-Assumption-Set-1-Revised-May-28-2026.pdf for details.
Request IR – 4 - Reference: 2026 10-Year System Outlook Report, Appendix A: RES Compliance Forecast, page - 28. - Appendix A forecasts PH Biomass as 250 GWh in 2030, compared to 198 GWh in both 2028 - and 2029. NS Power notes that average...
AI summary The 2026 10-Year System Outlook Report forecasts PH Biomass generation to increase from 198 GWh in 2028 and 2029 to 250 GWh in 2030. NS Power notes that average generation over the past three years was approximately 163 GWh, with biomass fuel eligible for RES compliance averaging 142 GWh. The request asks for the assumptions underlying the increase in generation, including fuel usage and costs.
N-7IESO (SBA) RIR 1 to 22
11 passages
NON-CONFIDENTIAL 1 Request IR – 2 - Refer to the 2026 Report Section 2 Load Forecast, page 6, Table 1: Forecast System Peak and
AI summary The text references a load forecast from the 2026 Report, Section 2, page 6, Table 1, which discusses forecast system peak data. This is part of a regulatory proceeding in Nova Scotia.
NON-CONFIDENTIAL c) The magnitude of the increases in energy production does not correlate with the magnitudes of the capacity additions because energy is a function of both the capacity and time, while capacity is a one-time change. As an...
AI summary The text explains that increases in energy production do not directly correlate with capacity additions due to the time factor in energy generation. The first 36 MW of capacity is expected to come online in late 2026, resulting in a low load impact that year. NSPI did not adjust the load forecast for a 59 MW increase in generating capacity by 2029, so IESO Nova Scotia did not need to modify the load forecast accordingly.
Response IR - 4 a) The 2025 10-Year System Outlook used ELCC values from the 2019 E3 Planning Reserve Margin and Capacity Value Study. Please see Appendix 6 of the study for average and marginal ELCC values for all penetration levels on Pa...
AI summary The response discusses the use of Effective Load Carrying Capability (ELCC) values in the 2025 and 2026 10-Year System Outlooks, referencing studies from 2019 and 2026. It provides citations to the studies and their respective appendices for further details.
NON-CONFIDENTIAL 22 This approach was adopted in the 2023 Evergreen IRP as a result of stakeholder feedback 23 and has been continued in subsequent resource planning processes in Nova Scotia. d) See SBA IR-10, part a. The value is based on...
AI summary The 2023 Evergreen Integrated Resource Plan (IRP) adopted a specific approach based on stakeholder feedback and continued it in subsequent planning processes in Nova Scotia. The value referenced is based on the 2026 E3 ELCC Study results, which were used by the Nova Scotia Independent Energy System Operator (IESO Nova Scotia) in response to information requests from the Small Business Advocate (SBA).
Response IR - 9 - a) The basis for the delivery timing assumption of Winter 2028/2029 is the forecast commercial operation date of 2028 for NB Power's Renewables Integration Grid Security (RIGS) Project. [1](#page-15-0) Commercial operatio...
AI summary The response outlines the basis for the delivery timing assumption of the Winter 2028/2029 planning period, which is tied to the commercial operation date of NB Power's RIGS Project. It also notes that even without the 100 MW firm import, the Planning Reserve Margin would still meet the 20% target.
Request IR – 12 1 5 6 7 8 9 1011 1415 16 17 18 19 20 21 - 2 Refer to the 2026 Report Section 3 Existing Generation Resources, page 15, Table 3: Additions - and Retirements in the 10-Year System Outlook Resource Plan, and the 2025 Report Se...
AI summary The request seeks a reconciliation of additions and retirements in generation resources between the 2025 and 2026 Reports, including differences in resource type, capacity, timing, and categorization, as well as drivers of changes and the status of resources not carried forward.
2026 10 Y 3 10 YSO - Table 3 2025 10 Y SO - Figure 7 Name Addition/ Retirement/ Conversion Installed Capacity (MW) Winter Installed Capacity (MW) Winter Reconciliation and Drivers for Change Rate Base Procurement Addition 33 273 in-service...
AI summary The document presents a table with information on installed capacity and project timelines related to the Rate Base Procurement. It also mentions the Nova Scotia Independent Energy System Operator (IESO Nova Scotia) responding to the Small Business Advocate (SBA) information requests.
NON-CONFIDENTIAL Renewable to Retail Addition 36 57 2026/2027 2027/2028 90 2025/2026 2026 10 YSO reflects the updated timing of the project with implementation split between two Winter periods. Total capacity (90 MW) is unchanged. Port Haw...
AI summary The document outlines updates to various energy projects in Nova Scotia, including changes in implementation timelines and capacity adjustments. Key projects include the Renewable to Retail, Port Hawkesbury Paper Wind, and NS Community Solar, with updates reflecting revised schedules and capacities as outlined in the 2026 10 YSO.
- "NS Power studied the appropriate calculation of the PRM in Nova Scotia as part of the 2020 - IRP, which confirmed that a 20% PRM target was appropriate for long-term planning. IESO - Nova Scotia continues to use the 20% PRM target." - a...
AI summary The text discusses the 20% PRM target used by Nova Scotia for long-term planning, as determined by the 2020 IRP. It also includes a request for IESO NS to consider conducting an updated study on the PRM and who would be responsible for it.
Request IR – 21 - The 2026 Report does not discuss offshore wind (OSW) generation resources. - a) If Nova Scotia successfully achieves its goals of up to 5 GW of OSW in the 2026 call for bids, and an additional 10 GW in future calls for bi...
AI summary The 2026 Report does not include offshore wind generation resources. Questions are raised about how achieving Nova Scotia's offshore wind goals will impact the 10-Year System Outlook and when offshore wind will be reflected in future reports.
Response IR - 21 a-b) The 2026 10-Year System Outlook report would not change meaningfully if Nova Scotia successfully achieved its goal to award up to 5GW of offshore wind in the 2026 call for bids and an additional 10 GW in future calls...
AI summary The 2026 10-Year System Outlook report would not change significantly even if Nova Scotia achieves its offshore wind development goals, as the first turbines are not expected to be commissioned until after 2033. Offshore wind would only be included as a resource addition if Nova Scotia becomes an offtaker for some of the energy produced.
103608NSEB (IESO) RIR 1 to 19
8 passages
Request IR-2: - Referencing Table 2: 2026 Nova Scotia Generation Resources, pdf page 8. - a) Please explain whether all generation facilities listed in the table are fully functional or whether any facilities are subject to planned or unpl...
AI summary The request seeks clarification on the status of Nova Scotia's generation facilities in 2026, including their functionality, any planned or unplanned outages, the duration of unavailability, and available resources to compensate for any shortages.
Request IR-5: - Pdf page 13 of the report states that the fast-acting generation requirement changed from 600 - MW to 450 MW compared to the last NS Power Integrated Resource Plan (IRP). Please explain - what changes in conditions resulted...
AI summary The document requests an explanation for the reduction in the fast-acting generation requirement from 600 MW to 450 MW as outlined in the latest NS Power Integrated Resource Plan (IRP) compared to the previous one.
Request IR-9: Pdf page 16 of the report states the following: The PRM is a long-term planning assumption specific to the power system under study that is verified or updated periodically. NS Power studied the appropriate calculation of the...
AI summary The document asks whether the Planning Reserve Margin (PRM) calculation in Nova Scotia is being re-assessed as part of the 2026 Integrated Resource Plan (IRP), whether a new PRM study is planned, and how often the PRM is updated. The 2020 IRP confirmed a 20% PRM target.
Request IR-11: - Referencing IESO Nova Scotia's 10-Year Load and Resource Outlook: - Pdf page 18 states that the PRM will fall below the 20% target in the final two years of the outlook, - which indicates that additional firm capacity will...
AI summary The text references the IESO Nova Scotia's 10-Year Load and Resource Outlook, noting that the PRM will fall below the 20% target in the final two years, requiring additional firm capacity. It also requests confirmation on the 2020 IRP analysis regarding NPCC LOLE criteria and reproduction of Table 4 showing DSM's impact on system peak reduction.
Request IR-12: - Please provide graphs showing historical and predicted annual system peak and annual net - system requirement values for review, including the past 10 years and next 10 years, similar to - Figures 1 and 2 in the 2025 10-Ye...
AI summary Request IR-12 asks for graphs showing historical and predicted annual system peak and annual net system requirement values over the past and next 10 years, similar to those in the 2025 10-Year System Outlook.
Request IR-13: Please convert the existing Figures 1 and 2 graphs into a table that indicate firm capacity changes for 2027 through 2036, including detailed resource types and capacities.
AI summary The request asks to convert existing graphs (Figures 1 and 2) into a table showing firm capacity changes from 2027 to 2036, with detailed resource types and capacities.
- For each project listed: - a) identify whether the large load is commercial or industrial; - b) describe the predominant type of load proposed for each facility; - c) identify the proposed interconnection point (i.e., transmission line o...
AI summary The text outlines requirements for identifying and describing details of large load projects, including their type, load characteristics, interconnection points, and anticipated in-service dates.
Request IR-17: - Referencing Planned Projects, on pdf page 24, IESO Nova Scotia stated: - The proposed projects are required to maintain system reliability and security and comply with System Design Criteria and other standards. - a) Provi...
AI summary The document requests the provision of 'System Design Criteria and other standards' related to planned projects, emphasizing the need for system reliability and security compliance.
103620SBA (IESO) IR 1 to 22
5 passages
- average annual decrease of 0.2%.[1](#page-1-0) a. Please provide a comparison of the 2026 Load Forecast to the 2025 Load Forecast for both energy (NSR) and system peak demand. - b. Please identify the key drivers responsible for the chan...
AI summary The text requests a comparison of the 2026 Load Forecast to the 2025 Load Forecast, identifies key drivers of the shift from declining to growing energy forecasts, and asks for needed changes in resource buildout to accommodate increased load.
Request IR-08 Refer to the 2026 Report Section 3 – Existing Generation Resources, page 15, Table 3: Additions and Retirements in the 10-Year System Outlook Resource Plan. There are multiple winters – specifically 2027/2028-2028/2029 and 20...
AI summary The document requests clarification on the methodology used to calculate Diversity Credit firm capacity values in the 10-Year System Outlook Resource Plan and the basis for the delivery timing assumption of a 100 MW firm import from NB Power. It also asks about alternative plans if the import does not materialize.
Request IR-11 Refer to the 2026 Report Section 3.2.3 – NS Community Solar, page 13, which states that "The forecast commercial operation date for the first three projects approved by the Nova Scotia Department of Energy is Q3 2027." - a. P...
AI summary The document requests information about the development status and potential risks of three Community Solar projects, as well as a reconciliation of additions and retirements in two resource plans. It emphasizes the importance of meeting commercial operation dates and understanding differences in resource planning.
Request IR-14 Refer to the 2026 Report Section 3.3.1 – Planning Reserve Criteria, page 16, which states that "NS Power studied the appropriate calculation of the PRM in Nova Scotia as part of the 2020 IRP, which confirmed that a 20% PRM ta...
AI summary The document references a 2026 report discussing the Planning Reserve Margin (PRM) target of 20%, as studied by NS Power in the 2020 IRP. It requests whether IESO NS plans to update the PRM study and who is responsible for restudying it, along with the anticipated timeline.
Request IR-19 Refer to the 2026 Report 5.2.2 Large Load Interconnection Requests, page 23, referring to Table 8: Large-Load SIS. - a. For each of the nine projects listed in Table 8, please provide the expected in-service date, ramp schedu...
AI summary Request IR-19 asks for details on nine large-load interconnection projects, including their expected in-service dates, load factors, and impact on resource adequacy. It also inquires if these loads are included in the load forecast and the implications for capacity requirements.
103636IG (IESO) IR 1 to 4
4 passages
1 2026 M12916 2 NOVA SCOTIA ENERGY BOARD 3 IN THE MATTER OF: The Public Utilities Act 4 IN THE MATTER OF: Nova Scotia Independent Energy System Operator's 2026 10- 5 Year System Outlook Report 6 7 INFORMATION REQUESTS To: Nova Scotia Indep...
AI summary The Industrial Group has submitted an information request to the Nova Scotia Independent Energy System Operator (IESO-NS) regarding the impact of recent battery storage procurement announcements on the 10-Year Outlook Resource Plan, including the scope, timing, and expected in-service dates of the expanded procurement.
7 Reference: Section 5.2.2 Large Load Interconnection Requests; Table 8: Large-Load SIS. - 8 (a) Please provide a status update on each of the projects listed in Table 8 and 9 the System Impact Studies being completed, and whether IESO-NS...
AI summary The document requests an update on the status of large load interconnection projects, details on load classifications, system demand analysis, reliability impacts, load forecast inclusion, and the implications of adding these loads to the forecast. It focuses on the Nova Scotia Independent Energy System Operator (IESO-NS) and its processes.
6 Request IR-3: - 7 Reference: Memorandum of Understanding on Maritime Regional Electricity - 8 Cooperation and System Integration, signed July 23, 2026: - 9 [https://www.gnb.ca/en/org/energy/energy-publications/maritime-regional-electrici...
AI summary This section of the regulatory proceeding requests information about IESO-NS's involvement in a Maritime Regional Electricity Cooperation and System Integration Memorandum of Understanding. It asks about IESO-NS's role, impact on planning and forecasting, implications for Nova Scotia's energy import/export capacity, and whether the MOU's outcomes will be reflected in future planning documents.
3 Request IR-4: - 4 (a) Please confirm whether IESO Nova Scotia is aware of any offshore wind 5 development proposals or initiatives in Nova Scotia (including in relation to 6 the Wind West initiative or any other offshore wind development...
AI summary The request asks IESO Nova Scotia to confirm awareness of offshore wind development proposals, explain the absence of offshore wind in current resource plans, and describe transmission and interconnection planning implications related to offshore wind development.
104074Submissions - SBA
5 passages
Re: M12916 -Nova Scotia IESO-202610-Year System Outlook Report Following its establishment under the More Access to Energy Act, IESO Nova Scotia is now responsible for the province's power supply planning and resource adequacy assessments,...
AI summary The Small Business Advocate (SBA) reviewed IESO Nova Scotia's 10-Year System Outlook report and found it generally reasonable but noted areas of concern regarding resource adequacy and system coordination. The SBA highlights potential risks for future planning and recommends further consideration by IESO Nova Scotia and the Board.
1. Division of Responsibilities and Collaboration with NSPI The System Outlook and IESO Nova Scotia's responses to IRs highlight that the transition of responsibilities from NSPI to IESO Nova Scotia, with regards to assessing the province'...
AI summary The transition of responsibilities from NSPI to IESO Nova Scotia has led to potential issues with coordination, transparency, and comprehensiveness in the 2026 System Outlook report. The SBA argues that the report lacks the depth of previous assessments due to omitted sections and unclear division of responsibilities.
2. Resource Adequacy Risks and Contingency Planning The System Outlook forecasts a reserve margin surplus in every year through Winter 2033/2034. 8 However, that surplus depends on many projects being completed on schedule. A significant n...
AI summary The System Outlook forecasts a reserve margin surplus through Winter 2033/2034, but this depends on timely project completion. The SBA argues that the surplus may not be sufficient if multiple projects are delayed, and criticizes the lack of contingency planning by IESO Nova Scotia. NSPI also questions the contingency planning approach.
3. Large Loads Inclusion in Forecast The potential for incremental large load projects represents one of the most important uncertainties for Nova Scotia's grid, and accurate forecasting is an important component of planning for 8 M12916,...
AI summary The inclusion of large load projects in Nova Scotia's grid forecasting is a significant uncertainty. IESO Nova Scotia has not established formal criteria for including large loads in forecasts, though it suggests considering a System Impact Study and subscription to a rate or tariff. The SBA recommends developing a clear method for incorporating large loads into the System Outlook to ensure timely resource adequacy planning.
Submissions Consequently, the SBA respectfully submits that the Board should consider requiring IESO to do the following: - 1. Coordinate with NSPI and other parties to obtain information relevant to system planning, rather than deferring...
AI summary The SBA submits that the IESO should improve coordination with NSPI, develop contingency plans, clarify load forecast criteria, reconsider battery degradation assumptions, and address environmental compliance risks. The submission highlights the need for the Board to ensure transparency and proper division of responsibilities between NSPI and IESO during the transition.
104079Submissions - IG
4 passages
Delivered by Email Crystal Henwood Regulatory Affairs Officer/Clerk Nova Scotia Energy Board 3rd Floor, 1601 Lower Water Street PO Box 1692, Unit M Halifax, NS B3J 3S3 Dear Ms. Henwood: Re: M12916 – IESO NS– 10-Year System Outlook Report T...
AI summary The Industrial Group submits comments regarding the IESO-NS 10-Year System Outlook Report, highlighting concerns about the Planning Reserve Margin, reliance on third-party projects, Renewable Electricity Standards compliance, and forecasting capabilities. The Group emphasizes the need for greater clarity and continued Board oversight.
2. CONTINGENCY PLANNING FOR KEY RESOURCE ADDITIONS The 10YSO Report confirms that overall, "the Nova Scotia system is anticipated to see a net increase in installed capacity of 2,804 MW over the next 10 years, providing a net increase of 3...
AI summary The document discusses the anticipated increase in installed capacity in Nova Scotia's electricity system over the next decade, highlighting the need for contingency planning due to uncertainties in the timing of resource additions. The Industrial Group (IG) notes that resource adequacy conclusions depend on external factors outside IESO-NS's control.
4. LARGE-LOAD INTERCONNECTION REQUESTS Table 8 of the 10YSO Report identifies several large-load interconnection requests under study, representing a potentially significant impact on peak demand, especially when combined. IESO-NS has conf...
AI summary The text discusses large-load interconnection requests and their potential impact on peak demand and system reliability. IESO-NS has only studied one project, IRL04, and has not analyzed others. The Industrial Group (IG) recommends that the Board direct IESO-NS to report on the status of these requests in future filings.
CONCLUSION IESO-NS has the opportunity to file rebuttal submissions and may be prepared to accept the IG's recommendations. If so, the IG welcomes those commitments. In the absence of those commitments, the IG respectfully requests that th...
AI summary The IG recommends that IESO-NS provide specific updates and reports in its filings regarding PRM reassessment, project statuses, RES compliance, interconnection requests, coordination with NSPI, and forecasting capabilities. The IG also welcomes IESO-NS's potential acceptance of its recommendations.