Topic:"Energy Efficiency Resource Assessment Model" in M12247

Hydrogen Enabled Combustion Turbines (CTs) Roadmap Item 8 - In addition to modeling a generic domestic hydrogen production plant load, the availability of a domestic source of hydrogen fuel for the CTs was also enabled in the Evergreen IRP...

AI summary The document discusses updates to the Evergreen Integrated Resource Plan (IRP) regarding hydrogen-enabled combustion turbines (CTs), including current manufacturer capabilities for hydrogen blending, retrofitting requirements, and capital cost adders. The updated information does not necessitate an IRP update, but NS Power will continue monitoring the resource as part of Roadmap Item 8.

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.

2022 Evergreen Pricing Date Contract NG Market NG Future Contract NG LFO May-29 Jun-29 Jul-29 Aug-29 Sep-29 Oct-29 Nov-29 Dec-29 Jan-30 Feb-30 Mar-30 Apr-30 May-30 Jun-30 Jul-30 Aug-30 Sep-30 Oct-30 Nov-30 Dec-30 REDACTED 2025 Evergreen IR...

AI summary The document discusses the 2022 Evergreen Pricing and the 2025 Evergreen IRP Action Plan and Roadmap Update, focusing on geothermal generation potential in Nova Scotia. It includes a request and response from NSPI regarding the need for additional data and funding for geothermal development.

NON-CONFIDENTIAL 1 Request IR-1: 27 planning horizon. The MMWG cases form the basis for NS Power's reliability 28 assessments, interconnection studies, regional expansion planning, and other system 29 studies and capture the ongoing impact...

AI summary The text discusses the planning horizon and the use of MMWG cases for NS Power's reliability assessments and system studies, including the impact of electrification and load growth. It also outlines peak load timing for distribution feeders and the importance of electrification trends in capital planning and distribution system modernization.

[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 826 System Impact Study in Progress 1...

AI summary The document discusses questions raised regarding sustaining capital values for diesel CTs, specifically addressing decreased values, investment amounts in VJ-1, variations in sustaining capital, and failed starts at Burnside 3. The response highlights the economic rationale for maintaining CTs based on 2020 IRP forecasts.

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.

- New Auburndale Substation by 2026 1 Request IR-6: (c) Please refer to the 2025 10-Year System Outlook for sustaining capital trends and a description of the cost forecast.1 1 Request IR-7: 2 3 On page 39, NS Power provided the following...

AI summary The document discusses a request related to the 2025 10-Year System Outlook and hydrogen blending in NS Power's combustion turbine fleet. It asks whether retrofits are needed for 35% hydrogen blending and clarifies the 10% capital cost adder assumption for hydrogen-capable turbines.

Date Filed: July 15, 2025 NSPI (NSEB) IR-7 Page 2 of 2 1 Request IR-8: 2 3 On page 41, NS Power stated that Net Zero Atlantic is assessing the cost and benefits of the 4 hybrid peak mitigation scenario and NS Power will be providing inform...

AI summary The document discusses the status of the Hybrid Heating study and the Effective Load Carrying Capability (ELCC) study. Net Zero Atlantic is conducting a jurisdictional scan and preparing a customer survey for the Hybrid Heating program, with results expected in Q1 2026. NS Power has completed the scope of work for the ELCC study and is seeking a consultant to finalize the study, though no timeline for the final report has been determined.

Table 1. Related Documents and Efforts Release Date Document Description June 30, 2023 2023 10-Year System Outlook Based on 4/30/23 load forecast update and the Evergreen IRP modeling results August 8, 2023 2023 IRP Based on modeling condu...

AI summary The document outlines a series of related documents and efforts in Nova Scotia's energy sector, including system outlooks, integrated resource plans, electrification reports, and reliability studies. These documents are based on load forecasts and modeling updates conducted over several years, with ongoing stakeholder engagement and revisions to project scopes.

he current cost estimates for its rehabilitation. This will enable a direct comparison of the costs (net present value of revenue requirements) of resource plans with and without Mersey.[8](#page-7-1) - Notably, Synapse's recommendations a...

AI summary Synapse compares resource plans with and without Mersey, noting NSIESO's role in IRP matters. NS Power references the 2025 ACE Plan decision and clarifies CT capacity in the Evergreen IRP, stating 620 MW by 2033 (450 MW by 2030 plus 150 MW by 2033) aligns with the preferred plan. Synapse disputes the 600 MW CT inclusion in The Path to 2030 .

DATE FILED: September 4, 2025 Page 9 of 19 2023 Load Forecast Report (M11108), April 28, 2023, Figure 2: Historical and Predicted Annual System Peak, page 8. 2023 10 Year System Outlook Report (M11221), June 30, 2023, Figure 19: NS Power 1...

AI summary The document discusses the need for additional firm capacity, particularly fast-acting generation, to maintain the target PRM in Winter 2029/30 and support the transition off coal as outlined in the 2025 10-Year System Outlook Report. It references the Evergreen IRP and the Province's Clean Power Plan, and notes that NS Power supports the procurement of 300 MW of fast-acting generation.