98212CA (NSPI) IR 1 to 7
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1 M12247 2 3 4 NOVA SCOTIA ENERGY BOARD 5 6 7 IN THE MATTER OF: The Public Utilities Act 8 – and – 9 10 11 IN THE MATTER OF: a review of the 2025 EVERGREEN IRP ACTION PLAN AND ROADMAP UPDATE of NOVA SCOTIA INCORPORATED 12 13 14 15 16 17 18...
AI summary The Nova Scotia Energy Board issued an information request to Nova Scotia Power Inc. under the Public Utilities Act, seeking responses by July 15, 2025, regarding the 2025 EVERGREEN IRP Action Plan and Roadmap Update. The Consumer Advocate initiated the request, with contact details provided for submissions.
39 Request IR-6: 41 Please provide an update on the status of dynamic line ratings and other grid-enhancing 42 technologies. In your response, please indicate what role these technologies may play (and at what 43 level of materiality) to a...
AI summary Request IR-6 seeks an update on dynamic line ratings and grid-enhancing technologies, asking about their role in achieving Integrated Resource Plan (IRP) objectives. The request emphasizes materiality levels and potential contributions to IRP action plans.
1 Request IR-7: 2 3 The Consumer Advocate would be interested in an update on the relative rate impact comparison 4 (2020 IRP Report, Figure 52). For example, a comparison of the most relevant scenario reported 5 in the 2020 IRP to NS Powe...
AI summary The Consumer Advocate requests NS Power to analyze the rate impact of the 2020 IRP Report's scenarios compared to current forecasts, considering policy changes and resource plan shifts. They ask if such analysis is useful, how long it would take, and whether Board direction is needed.
98213SBA (NSPI) IR 1 to 18
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Request IR-2: Please provide an updated rate impact analysis for the resource portfolio derived from the Evergreen IRP.
AI summary The document requests an updated rate impact analysis for the resource portfolio derived from the Evergreen Integrated Resource Plan (IRP), as part of a Nova Scotia regulatory proceeding. This analysis is required to evaluate the implications of the resource strategies outlined in the Evergreen IRP.
Request IR-6: Refer to Exhibit N-1, 2025 Evergreen IRP, page 13 of 42, regarding the provisions for banking and pooling emissions. Please describe how these rules have been, or will be, incorporated as constraints in NS Power's IRP plannin...
AI summary The text references Exhibit N-1 of the 2025 Evergreen IRP and requests an explanation of how emissions banking and pooling rules are integrated into NS Power's IRP planning models as constraints.
Request IR-7: - Refer to Exhibit N-1, 2025 Evergreen IRP, page 16 of 42, referring to the "proxy used in the Evergreen IRP." - a) Please provide a comparison of the constraint parameters used in the proxy with the final CER rules. - b) Wou...
AI summary Request IR-7 seeks a comparison of constraint parameters in the proxy used for the 2025 Evergreen IRP with the final Clean Electricity Regulations (CER) rules. It also asks whether differences between the proxy and CER rules would alter capacity expansion portfolios, requesting supporting analysis.
Request IR-9: Refer to Exhibit N-1, 2025 Evergreen IRP, page. 16 of 42, stating that "NSP anticipates incremental system costs associated with meeting the CER's targets compared to current policy." Please provide additional detail regardin...
AI summary NSP anticipates incremental system costs from meeting CER targets. The request seeks detailed analysis of cost drivers and quantification of these costs over time, referencing Exhibit N-1 from the 2025 Evergreen IRP.
Request IR-10: Refer to Exhibit N-1, 2025 Evergreen IRP page 20 of 42, stating that "NS Power will continue to monitor opportunities for near-term firm imports over existing and planned transmission infrastructure." Please provide an updat...
AI summary Request IR-10 seeks an update from NS Power on monitoring opportunities for near-term firm imports via existing and planned transmission infrastructure, referencing the 2025 Evergreen IRP.
Request IR-11: - Refer to Exhibit N-1, 2025 Evergreen IRP page 22 of 42, stating that "… the annual load forecast - has also been used to better understand system peak on a more granular level by reallocating the - load at the feeder level...
AI summary Request IR-11 seeks clarification on data sources used in the 2025 Evergreen IRP's annual load forecast and their implications for long-term resource planning, specifically referencing granular system peak analysis via feeder-level load reallocation.
Request IR-12: Refer to Exhibit N-1, 2025 Evergreen IRP, page. 23 of 42, referring to three areas of corrective action plans identified as a result of the NERC TPL assessment. - a) Please provide additional detail on the implications of th...
AI summary Request IR-12 seeks details on implications and status of corrective action plans from the NERC TPL assessment, as outlined in the 2025 Evergreen IRP (page 23 of 42), which identified three areas needing improvement.
Request IR-13: Refer to Exhibit N-1, 2025 Evergreen IRP, page. 23 of 42, noting that modified/reconfigured/upgraded Remedial Action Schemes are required to accommodate "Path to 2030" generation. Which specific generation additions require...
AI summary The text references the 2025 Evergreen Integrated Resource Plan (IRP) by Nova Scotia Power Inc. (NSP), noting that updated Remedial Action Schemes are required to accommodate 'Path to 2030' generation. The question seeks clarification on which specific generation additions necessitate these modifications.
98833Submissions - Synapse
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Comments on Nova Scotia Power's 2025 Integrated Resource Plan Action Plan and Roadmap Update Matter M12247 Prepared for Board Counsel of the Nova Scotia Energy Board August 5, 2025 AUTHORS Bob Fagan Sabine Chavin Shelley Kwok 485 Massachus...
AI summary This document, prepared by Synapse Energy for the Nova Scotia Energy Board, provides comments on Nova Scotia Power's 2025 Integrated Resource Plan Action Plan and Roadmap Update. The submission is part of regulatory proceedings under Matter M12247.
Misalignment of new combustion turbine additions between the IRP and other planning documents The Action Plan Update continues to reference 600 MW of new combustion turbine (CT) resource by 2029/2030.[1](#page-2-0) Synapse identifies the d...
AI summary The text highlights a discrepancy between the 600 MW of new combustion turbine (CT) capacity projected in the Action Plan Update and the 450 MW in the Evergreen IRP's preferred scenario. Synapse notes that other planning documents, like the 10-Year System Outlook and Path to 2030 reports, also reference 600 MW, conflicting with the IRP. NS Power has not rigorously modeled drivers affecting CT resource needs by 2030.
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.
The Reliability Tie provides resource adequacy insurance in addition to reliability benefits While it is reasonable that NS Power did not directly incorporate the modeling results used in the Reliability Tie application (M12217) into the I...
AI summary The Reliability Tie offers resource adequacy insurance and reliability benefits. NS Power's modeling in M12217 was not fully integrated into the IRP Update, and Synapse's evidence highlights gaps in the model's comprehensiveness, including outdated load forecasts and cost trends for combustion turbines (CTs). The Tie's ability to allow 100 MW of incremental firm import was excluded from primary cases, affecting 2030 CT resource needs.
Evaluate alternatives to the Mersey hydro system in the next IRP Synapse notes that NSPI did not provide any updates on sustaining capital investments for Mersey in this Action Plan Update. It remains unclear whether NS Power's plan to beg...
AI summary Synapse highlights NSPI's lack of updates on Mersey hydro system capital investments, questioning the economic prudence of NS Power's 2030s investment plan. It recommends evaluating Mersey redevelopment alternatives in the next IRP, noting scenarios with 100 MW firm imports from New Brunswick reduce CT capacity needs by 100 MW.
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.
2023 Evergreen IRP In 2019 and 2020, NSPI conducted an extensive IRP process, the first since 2014.[11](#page-4-4) Its 2020 IRP was submitted in November of 2020. Through the IRP process, NS Power identified Action Plan and Road Map items...
AI summary NSPI conducted an IRP process in 2019-2020, with the 2020 IRP submitted in November 2020. The 2022/2023 Evergreen IRP was triggered by changes in environmental policy, load, and resource assumptions since 2020. NSPI submitted the updated Evergreen IRP in August 2023, reflecting comprehensive modeling updates.
3.2025 ACTION PLAN UPDATE NSPI recently filed an update to its 2023 Evergreen IRP Action Plan.[16](#page-7-0) This is the fourth annual Action Plan Update. It contains information on changes to the electricity planning environment, as well...
AI summary NSPI updated its 2023 Evergreen IRP Action Plan in 2025, relying on the 2025 10-Year System Outlook and Path to 2030 reports but omitting recent load forecasts and capacity modeling. Critics note it failed to justify increased CT usage in resource plans or compare updates to the 2023 IRP. The plan aligns with the Nova Scotia Clean Power Plan’s 600 MW fast-acting generation target by 2030.
• Thermal Retirement Plan: - o The GRA (General Rate Application) Settlement Agreement submitted to the UARB in 2023 recommended a Decarbonization Deferral Account (DDA) to recover undepreciated thermal asset values and unrecovered decommi...
AI summary The Thermal Retirement Plan discusses NSPI's plans for a depreciation study and the Decarbonization Deferral Account (DDA) to recover thermal asset costs. The Green Choice Program (GCP) procured 625 MW of wind capacity. Demand Response efforts involve analyzing the hybrid peak approach from the 2023 Evergreen IRP, with a report expected in Q1 2026.
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.
99006Submission - SBA
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August 19, 2025 VIA EMAIL Ms. Crystal Henwood Clerk of the Board Nova Scotia Energy Board 1601 Lower Water Street, 3rd Floor Halifax NS B3J 3S3 Dear Ms. Henwood: Re: M12247 - Nova Scotia Power Inc. (NS Power) - 2025 Evergreen IRP Action Pl...
AI summary The Small Business Advocate (SBA) submits comments on Nova Scotia Power's 2025 Evergreen Integrated Resource Plan (IRP) Action Plan Update, highlighting key issues identified after reviewing the document, participating in a technical conference, and analyzing NS Power's responses. The SBA emphasizes the need for effective long-term resource planning to ensure safe, reliable, and economical service for Nova Scotia customers.
Critical need for NS Power - NSIESO collaboration on next IRP Under Bill 404, the Nova Scotia Independent Energy System Operator (NSIESO) will be the entity responsible for conducting the IRP going forward. However, based on the dynamic co...
AI summary The document highlights concerns over the transition of IRP responsibilities from NS Power to NSIESO under Bill 404, noting uncertainty in the process and a lack of analysis on policy impacts like the Clean Electricity Regulations (CER). NS Power has not initiated future IRP planning or conducted rate impact analyses, risking long-term customer harm. NSIESO requires NS Power's data and expertise for effective planning, with SBA urging proactive data sharing.
Upcoming capacity needs require action in near term The 2023 Evergreen IRP calls for near-term dispatchable capacity additions, with a need for new capacity resources by 2030. NS Power has indicated that it stopped activities related to co...
AI summary The 2023 Evergreen IRP highlights urgent near-term capacity needs by 2030, with NS Power halting CT development due to NSIESO's procurement responsibility. Concerns include no entity addressing capacity planning, discrepancies in required capacity numbers, and CER regulations' 2035 emissions limits impacting resource classification timelines.
100179Board Decision Letter
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M12247 – Nova Scotia Power Inc. – 2025 Evergreen IRP Action Plan and Roadmap Update On April 30, 2025, NS Power filed its 2025 Evergreen Integrated Resource Plan (IRP) Action Plan and Roadmap Update (IRP Update). This is the fourth annual...
AI summary NS Power filed its 2025 Evergreen Integrated Resource Plan (IRP) Action Plan and Roadmap Update, outlining changes to electricity planning and updates to prior Action Plan items. The Board conducted a paper hearing with submissions from stakeholders, while Bill 404 (Energy Reform 2024 Act) created the NSIESO, transferring system operator responsibilities from NS Power to the new entity.
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.
Conclusion The Board directs NS Power to conduct the ELCC study without delay and to continue its participation in the Net Zero Atlantic Hybrid Peak study. The Board also directs NS Power to provide an update by May 31, 2026, on the status...
AI summary The Board directs NS Power to conduct the ELCC study and participate in the Net Zero Atlantic Hybrid Peak study, requiring an update by May 31, 2026. It accepts NS Power's Evergreen IRP Update. Key entities include NS Power and Board members, with topics related to integrated resource planning and regulatory approval processes.