Topic:"Ns Nb Reliability Intertie Project" in M12247

NON-CONFIDENTIAL 1 Request IR-1: 2 3 RE: Action Plan Item 1b 4 5 (a) Please explain the potential benefits and limitations associated with Stage 2. Please 6 consider the following examples but do not limit the response to these examples. 7...

AI summary The response to Request IR-1 discusses Stage 2 of the NS-NB Reliability Intertie Project, noting it is in the conceptual phase and could provide options for energy and capacity imports/exports, including from New England and new nuclear capacity at Point Lepreau. Further study is needed to identify additional benefits and limitations.

NON-CONFIDENTIAL 1 Request IR-5: 2 3 Please provide the amount of renewable curtailment that occurred in 2022, 2023, and 4 2024 (annual MWh, and capacity factor of fleet curtailed), and that is expected by the 5 IRP model (e.g., hourly cur...

AI summary The response to Request IR-5 discusses renewable curtailment in Nova Scotia from 2022 to 2024 and projections for 2030 and 2035. It notes that historical curtailment is not indicative of future levels due to increased wind capacity. Data from the Evergreen IRP report and model are referenced, but full historical data is unavailable due to a cyber incident. Future curtailment locations depend on project locations.

NON-CONFIDENTIAL 1 Request IR-1: 2 3 For the years 2024, 2030 and 2035, please share the total installed generation capacity, and 4 hourly supply-mix, on the: i) winter peak day, and the day prior and following; and on the 5 ii) day of the...

AI summary The request (IR-1) asks for generation capacity and supply-mix data for 2024, 2030, and 2035, including renewable curtailment and demand-side measures. The response notes the Evergreen IRP Model did not model exports, cites the 2023 Load Forecast Report for DSM values, and attributes incomplete data to a cyber incident affecting NS Power's IT systems. Partial data is provided in Attachment 1 and the NS-NB Reliability Intertie model.

NS-NB Reliability Intertie Project Application (M12217), April 10, 2025.

AI summary The document refers to the NS-NB Reliability Intertie Project Application (M12217) filed on April 10, 2025, indicating a regulatory proceeding related to this project.

NON-CONFIDENTIAL 1 Request IR-1: 2 3 On page 20, NS Power stated that the Reliability Tie (Stage 1 - Onslow to Salisbury) has a 4 future potential firm import capacity of 100 MW. However, NS Power has also stated that 5 the Reliability Tie...

AI summary The document discusses the Reliability Tie (Stage 1 - Onslow to Salisbury) and its future potential firm import capacity of 100 MW, with NS Power clarifying that this capacity is not directly enabled by the Reliability Intertie alone but depends on system upgrades in New Brunswick.

NON-CONFIDENTIAL 1 Request IR-4: 21 22 23 24 25 26 27 As discussed in section 14.4.4 and 14.4.5 of the Application, the Reliability Intertie itself is a necessary, but not sufficient, component for accessing any new extra jurisdictional fi...

AI summary The document discusses the NSP's reliability intertie project and its role in accessing new firm capacity resources, as well as the integration of load forecasts for better distribution planning. It references the 2025 Evergreen IRP and highlights the importance of feeder-level load forecasting for long-term resource planning.

e transition. NS Power did not agree with some of the above concerns and other submissions made by the participants about items which they claimed were not incorporated into the Evergreen IRP Update. In addition, NS Power would like to rei...

AI summary NS Power disagrees with participant concerns about the Evergreen IRP Update, asserting that existing modeling (e.g., Reliability Intertie application M12217) already incorporates Clean Electricity Regulations updates, hybrid-peak heating impacts, and Fast Acting Generation forecasts. They argue current models appropriately represent the planning environment until NSIESO's first IRP is completed.

5.RECOMMENDATIONS Synapse remains concerned that NSPI has stated in various documents that it expects to have 600 MW of CT capacity by 2030 but has not shown this as an outcome of the IRP or the IRP updates. Enough has changed since NSPI c...

AI summary Synapse expresses concern that NSPI's claim of 600 MW CT capacity by 2030 lacks IRP alignment. Recommendations emphasize updating the Evergreen IRP with new data, evaluating resource options, and carefully assessing CT capacity economics. Scenarios must consider Mersey rehabilitation costs and regional coordination with New Brunswick Power.

2. Stage 2 of the NS-NB Reliability Intertie Project Application Similar to the Evergreen IRP, NS Power does not identify a schedule for the Stage 2 Reliability Intertie. This resource has been identified as critical to increasing access t...

AI summary NS Power has not provided a timeline for Stage 2 of the NS-NB Reliability Intertie Project, citing the need for 'further study.' The project is deemed critical for enhancing market access and reliability, with calls to analyze it in the next Evergreen IRP update due to reliance on costly peak resources like HFO- and LFO-fueled units.

Grid Strategies, on behalf of the CA, provided comments regarding "Update to Evergreen IRP", "Stage 2 of the NS-NB Reliability Intertie Project Application", "Procurement Schedule for Fast- Acting Generation Project", and "Relative Rate Im...

AI summary Grid Strategies, representing the Consumer Advocate, urged the Board to direct NS Power to advance IRP modeling before transferring planning responsibilities to NSIESO. It also highlighted NS Power's lack of a Stage 2 schedule for the NS-NB Reliability Intertie Project, advocating for its inclusion in the next IRP update. NS Power agreed but clarified it is focused on Phase 1 and not engaged in Phase 2 discussions with NB Power.

CA Submission, Re: M12247 – Nova Scotia Power Inc. – 2025 Evergreen IRP Action Plan and Roadmap Update, August 19, 2025, page 2. CA Submission, Re: M12247 – Nova Scotia Power Inc. – 2025 Evergreen IRP Action Plan and Roadmap Update, August...

AI summary The Consumer Advocate (CA) submission discusses the need for updated Integrated Resource Plan (IRP) modeling by Nova Scotia Power (NSP) and the Nova Scotia Independent Energy System Operator (NSIESO) to ensure efficient resource procurement decisions. NSP indicates that a general rate application (GRA) will be filed in 2025, which will reflect the impact of The Path to 2030 resource plan on rates. NSP also states that it will not update the relative rate impact comparison document from the 2020 IRP at this time, contingent on an updated IRP from the NSIESO.

77), but it agrees the findings and recommendations in that matter are appropriate to the IRP process. NS Power has stated it expects to file the final DER Integration Roadmap report by year-end 2025. The Consumer Advocate's consultant, Gr...

AI summary NS Power plans to file its final DER Integration Roadmap by 2025. GridStrategies, acting for the Consumer Advocate, urges studying Phase 2 of the NS-NB Reliability Intertie in the Evergreen IRP Update. The Board agrees, referencing its prior approval of the Reliability Intertie Project (M12217). It also supports updating rate impact evaluations post-IRP completion unless NSIESO requires earlier action.