N-2Hydro Asset Study - REDACTED
72 passages
1 TABLE OF CONTENTS 2 3 1.0 INTRODUCTION ............................................................................................................. 6 4 2.0 METHODOLOGY .......................................................................
AI summary The document outlines a methodology for assessing hydro asset costs, including sustaining capital, operational, replacement energy, and decommissioning costs. It details assumptions for class 5 cost estimates, net present value usage, and environmental assessments for asset removal.
34 Black River $47,350,000 $194,690,000 94 Dickie Brook $5,400,000 $33,020,000 8 Fall River $3,910,000 $6,500,000 2 Harmony $5,360,000 Lequille $8,330,000 $10,000,000 25 Mersey $355,730,000 $213,560,000 231 Nictaux $6,240,000 $28,190,000 4...
AI summary The text presents a table of hydro asset-related financial figures (e.g., Black River, Mersey) with associated numbers, followed by a redacted 'Hydro Asset Study' section. Confidential information has been removed, and the document appears to relate to infrastructure planning or capital expenditures in Nova Scotia's energy sector.
1 2.0 METHODOLOGY 2 3 This Hydro Study provides (1) a forecast of individual system investments required over 4 the next 40 years. The methodology for sustaining costs is described in Section 2.2. 5 (Given that the Harmony and Roseway Hydr...
AI summary The Hydro Study outlines methodologies for forecasting system investments and decommissioning costs over 40 years. It uses Class 5 cost estimates (±50–+100% accuracy) and net present value (NPV) to 2018 dollars for decommissioning, assuming full asset removal and watershed restoration. Sustaining costs for unused systems like Harmony and Roseway are excluded.
1 2 Unless stated otherwise, all sustaining costs are estimated based on the requirement to 3 keep hydro systems operating as they presently do in 2018 dollars. Annual spend 4 estimates represent project costs allocated to the in-service y...
AI summary The text outlines sustaining costs for hydro systems, estimated in 2018 dollars, including administrative overheads and AFUDC. A 40-year horizon is used for cost extraction, not decommissioning. Specific systems like Annapolis and Mersey are noted as subjects of regulatory filings.
1 2 2.2.1 Sustaining Capital 3 4 The sustaining capital cost estimates for each hydro system were compiled utilizing NS 5 Power’s asset management methodology. This method is consistent with industry best 6 practice for forecasting medium...
AI summary NS Power uses asset management best practices to forecast sustaining capital costs for hydro systems, reviewed by METSCO Energy Solutions. The methodology incorporates historical costs and asset risk assessments, with investment timing adjusted based on operational data. The approach supports long-term planning but does not constitute a capital forecast.
1 2 2.2.2 Operational Costs 3 4 It was assumed that the operations staffing, maintenance and support costs will remain 5 constant with regard to the hydro fleet. Unless otherwise noted, the average of the past 6 five years of available hyd...
AI summary The text outlines assumptions about hydro operational costs, replacement energy costs (REC), and decommissioning costs. Operational costs are projected at $59.68M over 40 years, while REC is tied to IRP analysis. Generation cost benefits are excluded from the Hydro Study, focusing instead on avoided replacement energy costs for capital projects.
avoided costs of 25 replacement energy. In this way, the cost benefit of generation is not included in any of 26 the Hydro Study costs. 27 28 2.3 Decommissioning Costs 29 12 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study RED...
AI summary The text discusses avoided costs related to replacement energy and decommissioning costs within the context of a Hydro Asset Study. It notes that generation cost benefits are excluded from the study's cost calculations, highlighting decommissioning as a separate financial consideration.
The case examples predominantly included costs for removal of all of a site’s assets. 28 This includes dams, powerhouses, surge tanks, canals, gate structures and fish passages. 29 Therefore, the estimates provided in the Hatch Report for...
AI summary The case examples include removal costs for all hydro assets, such as dams and powerhouses. The Hatch Report's estimates for NS Power systems are assumed to cover all system assets, given NS Power's extensive hydro infrastructure with over 150 dams.
19 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.1 Annapolis Tidal Power Facility 2 3 The Annapolis Tidal Power Facility was commissioned in 1984 in the town of Annapolis 4 Royal, NS. It has a maximum rated cap...
AI summary The Annapolis Tidal Power Facility, commissioned in 1984, has a maximum capacity of 19.9 MW and is nearing the end of its life. NS Power is considering a Life Extension and Modernization (LEM) project, with a P50 cost estimate of $19.53 million, in addition to sustaining capital and operating costs, totaling $34.49 million.
$19,530,000 NS Power NS Power operating costs $11,890,000 NS Power Total $34,490,000 21 20 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 Figure 5: Annapolis Tidal decommissioning forecast Source Hatch Report Remo...
AI summary The document presents financial figures related to NS Power's operating costs and a decommissioning forecast for the Annapolis Tidal project, including costs for removal, environmental factors, sedimentation, archaeology, and administrative overheads.
21 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.1 Avon Hydro System 2 3 The Avon hydro system, outside of Martock, Nova Scotia, was built in the 1920s, and is 4 shown below in Figure 8. The run of river system...
AI summary The Avon hydro system, located outside of Martock, Nova Scotia, was constructed in the 1920s and consists of two generating stations, five reservoirs, five dams, and two canals. The document provides forecasts for sustaining capital, operating costs, and decommissioning expenses, citing Hatch Report and Boreas Report as sources.
Bear River Hydro System REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.3 Black River Hydro System 2 3 The Black River hydro system is outside Gaspereau, NS and capable of generating up to 4 21.6 MW. It is a run...
AI summary The Black River hydro system, located outside Gaspereau, NS, consists of multiple powerhouses, reservoirs, and generating units. It has a capacity of 21.6 MW and includes sustaining capital and operating costs totaling $47,350,000.
$35,080,000 NS Power NS Power operating costs $12,270,000 NS Power Total $47,350,000 17 18 Figure 13: Black River decommissioning forecast Source Removal $58,110,000 Hatch Report Environmental $28,880,000 Hatch Report Sedimentation Hatch R...
AI summary The text provides financial figures related to NS Power's operating costs and the Black River decommissioning forecast, including costs for removal, environmental, sedimentation, archaeology, and administrative overheads. It also includes a redacted figure referencing White Rock Pond, Hells Gate Pond, and Lumsden Pond, along with a mention of Hollow Bridge.
29 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.5 Fall River Hydro System 2 3 The Fall River hydro system, shown in Figure 20, was built in 1985, has one powerhouse 4 with a single 500 kW rated unit. There are...
AI summary The Fall River hydro system, constructed in 1985, consists of one powerhouse with a 500 kW unit, two reservoirs, two dams, wing dams, a canal, and a penstock. It includes sustaining capital and operating costs totaling $3.91 million, and decommissioning costs estimated at $6.5 million.
1 3.8 Mersey Hydroelectric System 2 3 The Mersey hydro system is a run of river system, with six powerhouses, 12 units and an 4 installed capacity of 43.6 MW, as shown in Figure 28. Each powerhouse has an adjoining 5 main dam, and several...
AI summary The Mersey hydro system, consisting of six powerhouses with a total installed capacity of 43.6 MW, is described along with its structures and water flow. Operating costs are expected to decrease with redevelopment. Sustaining capital and redevelopment costs are outlined, as well as decommissioning costs including removal, environmental, sedimentation, archaeology, and administrative costs.
Boreas Report AO/AFUDC $8,720,000 NS Power Total $213,560,000 16 17 36 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Figure 28 N LEGEND: RESERVOIR DAM SPILLWAY POWERHOUSE FISHWAY CONTROL PIPELINE CANAL KEJIMKUJIK NATIONAL PARK Lake Rossignol...
AI summary The text includes a financial table with AO/AFUDC costs and a redacted figure related to a hydroelectric project, including a legend and map of the Kejimkujik National Park and Lake Rossignol reservoir, indicating infrastructure components such as dams, powerhouses, and fishway controls.
Jordan Lake COWIE FALLS Mersey Hydro System 37 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.9 Nictaux Hydroelectric System 2 3 The Nictaux Hydro system has a rated capacity of 8.5 MW from one unit. Water from...
AI summary The Nictaux Hydroelectric System has a rated capacity of 8.5 MW and consists of multiple structures, including dams and spillways. The system's sustaining capital and operating costs total $6,240,000, as reported by NS Power.
39 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.10 Paradise Hydroelectric System 2 3 The Paradise Hydro system has a maximum capacity of 6.2 MW from a single unit, as 4 shown in Figure 34. Water from Corbett L...
AI summary The Paradise Hydroelectric System has a maximum capacity of 6.2 MW. The document includes sustaining capital and operating costs, as well as decommissioning costs such as removal, environmental, sedimentation, and archaeology expenses. These figures are sourced from NS Power and various reports.
Roseway Hydro System REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.12 Sheet Harbour Hydroelectric System 2 3 The Sheet Harbour hydro system, shown in Figure 39 has a rated capacity of 10.6 MW. 4 This is generat...
AI summary The Sheet Harbour hydro system has a rated capacity of 10.6 MW, generated by six units across two powerhouses. The document outlines sustaining capital and operating costs, as well as decommissioning costs including removal, environmental, sedimentation, and archaeological expenses.
47 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.14 St. Margaret’s Bay Hydroelectric System 2 3 The St. Margaret’s Bay hydro system has a rated capacity of 8.9 MW. Water flows 4 through the reservoirs, Five Mil...
AI summary The St. Margaret’s Bay hydro system has a rated capacity of 8.9 MW and includes multiple reservoirs and units. The text provides sustaining and decommissioning cost forecasts, including capital, operating costs, and environmental considerations.
Margarets Bay Hydro System REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.15 Tusket Hydro System 2 3 The Tusket hydro system, shown in Figure 48 has a rated capacity of 2.4 MW, across 4 three units in one powerh...
AI summary The Tusket hydro system, with a rated capacity of 2.4 MW, is composed of three units in one powerhouse and includes four reservoirs and seven dams. The main dam is under consideration for reconstruction, with sustaining and decommissioning costs detailed in the document.
Boreas Report AO/AFUDC $2,010,000 NS Power Total $79,530,000 14 50 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Figure 48 N Tus ket Ri ver Kempt Back Lake LEGEND: Mink RESERVOIR Lake DAM (TIMBER/ROCK) DAM SPILLWAY POWERHOUSE Raynards Lake F...
AI summary The text presents a financial breakdown of AO/AFUDC for NS Power and includes a redacted hydro asset study related to the Tusket Hydro System, which has a capacity of 2.7 MW and a catchment area of 1445.5 km².
Tusket Hydro System REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 3.16 Wreck Cove Hydroelectric System 2 3 The Wreck Cove hydro system, shown below in Figure 51 has a maximum capacity of 4 215.8 MW, across three...
AI summary The Wreck Cove hydro system has a maximum capacity of 215.8 MW and consists of three units across two powerhouses. The document outlines sustaining capital, LEM, and operating costs totaling $160.12 million, as well as decommissioning costs estimated at $424.94 million, including removal, environmental, sedimentation, archaeology, and AO/AFUDC costs.
Boreas Report AO/AFUDC $13,560,000 NS Power Total $424,940,000 13 52 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Figure 51 N Cheticamp Flowage LEGEND: RESERVOIR DAM (EARTH) DAM SPILLWAY POWERHOUSE PIPELINE Ingonish I CANAL Ingonish II Gisb...
AI summary The text presents a financial breakdown of AO/AFUDC costs associated with NS Power and includes a redacted figure depicting a hydroelectric site with various components such as reservoirs, dams, and powerhouses, along with a catchment area measurement.
55 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study REDACTED 1 5.0 CONCLUSION 2 3 The Hydro Study provides forecast sustaining capital and operating costs and 4 decommissioning costs of each of NS Power’s hydro systems. NS Pow...
AI summary The Hydro Study outlines forecasted sustaining capital, operating, and decommissioning costs for NS Power’s hydro systems. Expert consultants were engaged to estimate costs related to physical removal, environmental assessment, sediment management, and archaeology. NS Power is also preparing for its next Integrated Resource Plan (IRP) by evaluating storage technologies and renewable energy options.
steps was to define the scope of long-term capital needs in relation to the existing infrastructure, to inform its expectations of the financial and human resources underlying the modernization work. NS Power’s AM strategy entails pacing t...
AI summary NS Power's asset management strategy focuses on long-term capital needs for hydro infrastructure, balancing affordability, sustainability, and reliability. The strategy includes modernization, life extension, and redevelopment of hydro assets, in line with legislative requirements and integration of variable generation resources.
assets are forecasted to be replaced/refurbished and the unit cost estimates. The plan includes most major capital-intensive activities such as refurbishment and replacements of the individual assets. NS Power utilizes the intervals along...
AI summary NS Power is forecasting asset replacement and refurbishment costs using intervals determined by the HydroAMP tool. METSCO expressed concerns that shorter intervals may overestimate future capital needs. NS Power explains the shorter intervals are part of a proactive asset management strategy to prevent failures and align with strategic objectives.
on the asset and initiative, interventions may entail a replacement of the asset, resulting in a significant capital spend, or a smaller sustainment/refurbishment activity with a more moderate budget. The costs for the first interval repre...
AI summary The document discusses the costs associated with asset replacement and refurbishment, emphasizing the need for detailed condition and risk assessments before major interventions. METSCO confirms the reasonableness of NS Power's costing assumptions, noting that industry practices support the approach of using historical data and engineering estimates for long-term spending planning.
or similar size assets. In some instances, where the historical records lack for a certain asset size, engineering assumptions for the cost estimate were made and documented. In other cases, where the 9 REDACTED (CONFIDENTIAL INFORMATION R...
AI summary The document discusses methods used to estimate costs for hydro assets, including engineering assumptions when historical records are lacking, and how costs are split between related units. It also outlines the prioritization of investments based on asset risk and optimization of replacement/refurbishment schedules.
due to NS Power’s proactive approach as described in section 2.2. Therefore, METSCO could not utilize direct comparison between historical and future spending profiles to form a rational conclusion. $40M 36.62M BOP 34.32M Crane $35M Dam 29...
AI summary The text discusses METSCO's inability to form a rational conclusion due to NS Power’s proactive approach, as outlined in section 2.2. It includes a visual representation of capital spending across various categories, such as Crane, Dam, Electrics, and Generator Rotor, with figures ranging from $20M to $40M.
Generator Stator $20M Governor 14.65M Headgate / Trashrack 13.72M I&C $15M 10.43M Penstock $10M Structures Surgetank $5M Tailrace Turbine & Components $0M Valves 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 Active Grand Total Years Fi...
AI summary The text presents a visual representation of NS Power's historical spending trend from 2009 to 2018, highlighting expenditures on various components such as the generator stator, penstock, and turbine & components.
otal Years Figure 1: NS Power historical spending trend. 12 REDACTED (CONFIDENTIAL INFORMATION REMOVED) Hydro Asset Study Appendix A Page 18 of 22 December 2018 Review of NS Power Hydro Asset Management Spending Plan $55M Control Valve Cra...
AI summary This figure shows NS Power's historical capital spending trends, highlighting expenditures on various hydro assets such as control valves, cranes, dams, and generator rotors from 2015 to 2018.
Generator Rotor $35.86M $36.60M Capital Spending ($M) $35M Generator Stator $30M Governor Headgate & Trash Rack $25M I&C $20M $21.00M Penstocks $15M $13.23M $16.05M Structures (Separate from Dam) $10M Surgetanks $4.53M $4.90M $4.03M $5M Ta...
AI summary The text presents a breakdown of capital spending across various components of a hydroelectric project, including generator rotor, stator, governor, headgate, penstocks, and other infrastructure elements, with figures ranging from $4.03M to $36.60M.
$4.53M $4.90M $4.03M $5M Tailrace Turbine & Components $0M 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 Grand Total Years Figure 2: NS Power hydro interval plan 10-year outlook (in 2018 dollar value). Another key observation in Figure...
AI summary Figure 2 shows the NS Power hydro interval plan's 10-year outlook, highlighting higher capital expenditures in the first five years. METSCO notes that heavy investments like Wreck Cove are planned for the near term and suggests opportunities to level spending over time. The HIP plan accounts for resource constraints, limiting replacements and overhauls per year and aligning work with NS Power's labor force and customer outage minimization.
omers would experience. Additionally, the HIP determines the first interval upgrades for governors and I&C based on the work performed for electrics such as power transformer, circuit breaker and bus. METSCO finds the labour resource and o...
AI summary The document discusses the Hydro Interval Plan (HIP) and its impact on labour resource and operational constraints, as well as a 10-year capital expenditure outlook for NS Power, including upgrades for governors and I&C based on electric work.
ower Hydro Asset Management Spending Plan Table 2 represents a summary of all capital expenditures planned for the next 10 years. Table 2: NS Power HIP 10-year future outlook (in 2018 dollar value).
AI summary The document outlines a 10-year capital expenditure plan for NS Power's Hydro Interval Plan, presented in Table 2 with values in 2018 dollars.
Asset 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 Control Valve $0.3M $0.2M $0.9M $0.3M $0.3M $0.2M $0.1M $0.4M Crane $0.5M $0.3M $0.2M $0.6M $0.6M $0.2M $0.2M $0.2M $0.0M Dams and Water Impounding $16.3M $25.6M $6.5M $2.8M $1.0M $5....
AI summary The document presents a table of capital expenditures from 2019 to 2028, detailing spending across various asset categories such as control valves, dams, generators, and turbine components. It shows fluctuating investment levels over time, with some categories experiencing significant increases followed by decreases.
Rev. 0 December 12, 2018 This document contains confidential information intended only for the person(s) to whom it is addressed. The information in this document may not be disclosed to, or used by, any other person without Hatch's prior...
AI summary This document outlines a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, specifically related to control structures. It is part of a project management report and includes a reference number for the estimate.
(CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 4 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...
AI summary This document is a confidential report prepared by Hatch Ltd. for Nova Scotia Power Inc. regarding the decommissioning cost estimate for NSPI’s Hydro Systems. It is intended solely for the use of NSPI’s management in decision-making and contains unverified information provided by the client and other parties.
(CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 6 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...
AI summary This document is a project management report from Nova Scotia Power Inc. related to the decommissioning cost estimate for NSPI Control Structures, identified as H357345.
Fishways 13 Powerhouses 33 H357345-00000-200-230-0001, Rev. 0, Page 1 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDAC...
AI summary This document discusses the decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, highlighting the methodology used, which includes reliance on previous Class 5 decommissioning estimates for efficiency and cost savings.
reservoir (if known) was developed based on precedent information for sediment management costs in dam decommissioning projects. Excluded from the estimates are H357345-00000-200-230-0001, Rev. 0, Page 4 Ver: 04.03 © Hatch 2018 All rights...
AI summary The document discusses the development of a reservoir sediment management cost estimate for dam decommissioning, excluding potential costs related to compensation for recreational users, residents, businesses, and First Nations, as well as decommissioning costs for Powerhouse and substation structures.
5 50 121 Gulch Main Dam and Spillway 57 730 1,112,823 H357345-00000-200-230-0001, Rev. 0, Page 14 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIA...
AI summary This document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, specifically focusing on the Gulch Main Dam and Spillway. It includes financial figures and project management details related to the decommissioning process.
and Surface m for Area Assessment, based on water https://earthdata.nasa.gov polygons, Nova Scotia open data. Overall these perimters are larger than that shown in satellite imagery and may reflect full supply level. Version: 0 Review: TC...
AI summary This document presents a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, specifically the Dickie Brook Generating System, and includes a schematic of the system provided in Figure 12.
based on water https://earthdata.nasa.gov polygons, Nova Scotia open data. Overall these perimters are larger than that shown in satellite imagery and may reflect full supply level. Version: 0 Review: TC Figure: -1 Page: Document Path: T...
AI summary This document provides a schematic of the Fall River Generating System and outlines a decommissioning cost estimate for NSPI Control Structures. It is part of a Project Management Report by Nova Scotia Power Inc.
CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 37 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...
AI summary The document discusses the decommissioning cost estimate for NSPI's Lequille Hydroelectric System, including removal and environmental costs, as well as sediment management. A schematic of the system and a summary of structures assessed are referenced.
29 13,555 63,153 Lequille Intake Structure 31 15 593,565 H357345-00000-200-230-0001, Rev. 0, Page 27 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDEN...
AI summary The document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system control structures, including a specific entry for the Lequille Intake Structure with associated costs.
CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix B Page 39 of 110 Nova Scotia Power Inc. Project Management Report Decommissioning Cost Estimate for NSPI Control Project Management Sturctures H357345 NSPI's Hydro Syste...
AI summary This document provides a schematic of the Mersey Generating System and a summary of structures associated with the Mersey Hydroelectric System as part of NSPI's Hydro System Decommissioning Cost Estimate.
H357345-00000-200-230-0001, Rev. 0, Page 30 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...
AI summary The document provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, including details on specific structures such as the Jordan Lake Main Dam and Sixth Lake Outlet Dykes, along with their dimensions.
demolition was based as a lump sum item and costs were developed based on historical NSPI surge tank demolition projects. x Powerhouse Demolition The subsurface concrete quantities for powerhouse demolition were factored based on similar s...
AI summary The text discusses the estimation of costs for various aspects of a demolition project, including powerhouse demolition, engineering and owners' costs, and site restoration. Methods such as historical data, Google Earth scaling, and GIS data are used to determine costs, with no salvage values applied for equipment.
ams 300 to 600 long : 20% volume discount. x Dams 600 to 1000m long : 30% volume discount. x Dams in excess of 1000 m long : 30% volume discount: H357345-00000-200-230-0001, Rev. 0, Page 56 Ver: 04.03 © Hatch 2018 All rights reserved, incl...
AI summary The text provides a decommissioning cost estimate for Nova Scotia Power Inc.'s hydro system, focusing on infrastructure removal costs related to structure height. It includes volume discounts for dams of varying lengths and references a specific project management report and document.
NSPI's Hydro System Decommissioning Cost Estimate Figure 35: Relationship of Infrastructure Removal Costs with Structure Height The estimates were then adjusted to include engineering and owner’s costs based on a percentage of the construc...
AI summary NSPI's Hydro System Decommissioning Cost Estimate includes adjustments for engineering and owner's costs, as well as remediation of exposed canal slopes. For dams with powerhouses, the estimate includes the removal of associated structures and equipment.
Project Management Sturctures H357345 NSPI's Hydro System Decommissioning Cost Estimate Item Number System Cost ($2018 CDN) Dams Spillway/Intakes Canals Powerhouse Fishways Tusket 7 3 1 1 1 18,990,000 Wreck Cove 21 5 0 2 0 124,192,000 Tota...
AI summary The document provides a cost estimate for the decommissioning of NSPI's hydro systems, including details on specific systems like Tusket and Wreck Cove, along with a list of excluded costs such as taxes, permits, and financing costs.
NSPI's Hydro System Decommissioning Cost Estimate Table 21: Cost Estimates for Varying Dam Sizes & Relevant Environmental Concerns Environmental Estimated Estimated Total Dam Size Concerns Environmental Cost Decommissioning Cost Low $121,0...
AI summary The document presents cost estimates for decommissioning dams of varying sizes, with different levels of environmental concerns, highlighting the relationship between environmental costs and overall decommissioning expenses.
H357345-00000-200-230-0001, Rev. 0, Page 75 Ver: 04.03 © Hatch 2018 All rights reserved, including all rights relating to the use of this document or its contents. REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appe...
AI summary The document contains a decommissioning cost estimate for NSPI's hydro system, including references to studies and reports on sediment effects on fish habitat, dam removal costs, and flood studies related to hydro systems in Nova Scotia.
Medium $200,000 - $3,500,000 High <$76,000,000 To assess the dam size and the relevant environmental categories, select the dam size (Column L2) with the arrow feature and proceed to the environmental division score (Column W2) to select t...
AI summary The document provides a decommissioning cost estimate for NSPI's hydro system control structures, including a range of costs from $200,000 to $3,500,000 and a high estimate of less than $76,000,000. It references a figure and a project management report related to the study.
Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No auxilliary buildings at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Remov...
AI summary The document outlines the costs and removals associated with decommissioning various facilities, including boilers, turbines, generators, and electrical systems, with specific line items detailing expenses and salvage allowances.
Auxiliary Buildings Removals (not associated with Production Plant) $0.00 No miscellaneous auxilliary structures at this site BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo G...
AI summary The text outlines the costs and allowances associated with the removal and decommissioning of various infrastructure components at a site, including boilers, turbines, electrical systems, and auxiliary equipment, along with administrative and overhead expenses, and salvage allowances.
Auxiliary Buildings Removals (not associated with Production Plant) $12,500.00 Remove administration facility (house) and garage. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Tur...
AI summary The text lists various costs associated with the removal of infrastructure and equipment, including auxiliary buildings, boilers, turbines, electrical systems, and common services, with some items showing negative values as allowances for salvage materials.
Auxiliary Buildings Removals (not associated with Production Plant) $0.00 N/A BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $40,500.00 One vertical and on...
AI summary The text lists various costs and allowances associated with the removal and decommissioning of equipment at a power site, including turbo generators, electrical systems, and building services, with a total estimated cost and salvage allowances.
Auxiliary Buildings Removals (not associated with Production Plant) $25,000.00 Remove multiple base-camp buildings. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator R...
AI summary The document outlines various costs associated with the removal and decommissioning of equipment and infrastructure, including auxiliary buildings, boilers, turbines, electrical systems, and other facilities. It includes line items for removal costs, salvage allowances, and administrative expenses.
Auxiliary Buildings Removals (not associated with Production Plant) $10,000.00 Remove auxilliary structures at this site. BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Gener...
AI summary The document outlines the costs associated with the removal of various infrastructure components at a site, including auxiliary buildings, boilers, turbines, electrical systems, and common services. It also includes allowances for salvage materials such as scrap metals and insulated wire.
BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $94,500.00 Three vertical turbo-generator units. Includes disassembly and removal of governor systems, Turbo...
AI summary The text outlines various costs associated with the removal and decommissioning of equipment at a power site, including boilers, turbines, electrical systems, and auxiliary equipment, along with estimated administration and overhead expenses, and allowances for salvage materials.
walls, excavation and partial removal of sub-structure including Powerhouse & Related Auxiliary Structures Removals $159,200.00 by-pass sluice; infilling of the powerhouse with site generated granular material and an estimate of off-site d...
AI summary The text outlines the costs associated with the removal of powerhouses and related auxiliary structures, including excavation, partial removal of sub-structure, bypass sluice, and infilling of the powerhouse with granular material, along with off-site disposal costs, totaling $159,200.00.
Auxiliary Buildings Removals (not associated with Production Plant) $0.00 N/A BOILERS & AUXILIARIES Boilers & Auxiliaries - NOT APPLICABLE $0.00 N/A TURBINES, GENERATORS & AUXILIARIES Turbo Generator Removals $20,000.00 One horizontal turb...
AI summary The text details various costs and allowances associated with the removal and decommissioning of equipment and systems at a site, including turbo-generators, electrical systems, and building infrastructure, along with salvage allowances for scrap metals and parts.
NOVA SCOTIA POWER INC. ‐ HYDRO PRODUCTION ANNAPOLIS TIDAL POWER GENERATION STATION POWERHOUSE DEMOLITION STUDY EXECUTIVE SUMMARY Examinations and derivations of conceptual plans and related cost estimates for decommissioning of the Annapol...
AI summary This document outlines the decommissioning plan and cost estimates for the Annapolis Tidal Power Generating Station, focusing on structural demolition and removal of generating equipment. The report details the use of existing infrastructure and the necessity of permanent structural enhancements due to the facility's exposure to high tides. The total estimated cost is approximately $6,458,390 CAN, plus applicable taxes.
Derivation of costs associated with archaeological assessments and specific investigations at sites of archaeological significance are not included in this study. It is expected that there will be little potential for such costs at this re...
AI summary This text discusses the exclusion of archaeological assessment costs from the study, the variability in demolition methodology based on contractor plans, the avoidance of earth-fill cofferdams due to water depth and tides, and the use of existing infrastructure and environmental containment measures during demolition.
12,000.00 services at Powerhouse/Interpretive Centre and Administration buildings. BUILDINGS & STRUCTURES Includes partial roof structure removal, removal of below-grade walkways, stair structures and mezzanine structures; demolition Power...
AI summary The document outlines various capital expenditures related to infrastructure removal and decommissioning at a power facility, including costs for removing buildings, structures, and decommissioning intake/outfall systems.
$34,700.00 hydraulic rams, pumps, servos and associated piping ELECTRICAL On-Site Distribution Lines Removals $12,500.00 Electrical Power Systems Removals $15,000.00 Other Auxiliary Systems and Equipment Removals $12,500.00 Electrical Cont...
AI summary The text outlines various costs associated with the removal and decommissioning of electrical and mechanical systems, including distribution lines, power systems, and auxiliary equipment, along with administrative and overhead expenses. It also includes a salvage credit for scrap metals.
NOVA SCOTIA POWER INC. ‐ HYDRO PRODUCTION ANNAPOLIS TIDAL POWER GENERATION STATION POWERHOUSE DEMOLITION STUDY 3. Demolition Costs Since the work described herein would be carried out by contractors, costs for demolition work throughout th...
AI summary The text outlines the demolition costs for the Annapolis Tidal Power Generation Station, detailing the equipment and contractors involved in the process, including specific machinery and labor rates used for estimation.
Un‐skilled labour Skilled trades rate Foreman Rate , including truck Dale Fabrication Inc. Dump truck and Driver 13 REDACTED (CONFIDENTIAL INFORMATION REMOVED) REDACTED Hydro Asset Study Appendix D Page 17 of 25 NOVA SCOTIA POWER I...
AI summary The text outlines various labor rates and disposal site tipping fees associated with the demolition of the Annapolis Tidal Power Generation Station. Specific rates for unskilled labor, skilled trades, foreman, and dump truck services are listed, along with tipping fees from Halifax C&D Recycling and Torbrook C&D Disposal and Recovery.
epresents two generating units with an operating capacity of 2.6 MW, include the Donahue Spillway, Donahue Lake Dam, Toms Lake Wing Dam, Dickie Brook Pipeline, as well as associated headponds. The following costings represent the possible...
AI summary The text discusses the removal costs for assets in the Dickie Brook Hydro System, including archaeological assessments and the potential impact on archaeological resources, particularly around the Donahue Spillway. Previous assessments did not find any archaeological resources, and the recommended course of action is archaeological reconnaissance.
N-9-(i)Appendices A-N
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36 Summary of Assumptions Nova Scotia Power IRP Final Report Appendix B Page 38 of 112 Capital Costs (1 of 2) – Renewables and Storage Capital Cost (2019 CAD $/kW) Technology Subtechnology 2019 2030 % Change Wind Onshore $2,100 $1,691 -19%...
AI summary The document presents capital cost data for various energy technologies, including renewables and storage, from 2019 to 2030. It highlights significant cost reductions for wind, solar PV, and battery storage technologies, while some technologies like tidal and compressed air storage show no change in costs.
37 Summary of Assumptions Nova Scotia Power IRP Final Report Appendix B Page 39 of 112 Capital Costs (2 of 2) – Fossil and Nuclear Capital Cost (2019 CAD $/kW) Technology Subtechnology 2019 2030 % Change Coal Coal-to-gas conversion (102 –...
AI summary The text presents capital cost data for various energy technologies in Nova Scotia, comparing 2019 and 2030 costs. It shows that most technologies experience a decrease in capital costs over time, except for coal-to-biomass conversion, which remains unchanged.
Reciprocating Engine $27 $9 Nuclear Small modular reactor $140 $0 All O&M costs assumed to escalate at 2% per year. 39 Nova Scotia Power IRP Final Report Appendix B Page 41 of 112 NS POWER CAPITAL COST SENSITIVITIES • For certain resource...
AI summary The text discusses NS Power's approach to modeling capital cost sensitivities for various energy resources, including wind, solar, and battery storage, with different base and low-case capital costs. This is done to assess the impact on resource additions in the capacity expansion model, considering potential lower capital costs or alternative financing structures.
$250.00 Capital Cost Decline Trajectory ($2020) 2020$ Levelized Cost of Energy (LCOE) $3,500.00 $200.00 $3,000.00 $2,500.00 $150.00 $/kW
AI summary The document presents a capital cost decline trajectory and levelized cost of energy (LCOE) data for the year 2020, illustrating financial considerations related to energy generation and infrastructure planning.
peration in order to appropriately compare economics. • High sustaining capital cost sensitivities will assume the following: • High (or other iterative ranges) = Base + 50% 2020 IRP FINAL ASSUMPTIONS SET 100 Nova Scotia Power IRP Final Re...
AI summary The document discusses the 2020 Integrated Resource Plan (IRP) Final Assumptions Set, including sustaining capital forecasts for thermal, combustion turbine, and small hydro assets. It outlines the screening process for economic retirements of hydro and combustion turbine fleets, considering decommissioning and replacement costs, and how these will be evaluated in Portfolio Studies and Operability/Reliability Screening.
New Installed Capacity Comparison 2.1C.CAPEX-2 2.1C Nova Scotia Power IRP Final Report Appendix E Page 69 of 72 2.1C.CAPEX-2 (LOW SUSTAINING CAPEX) M I D E L E C . / B A S E D S M / N E T Z E R O 2 0 5 0 / R E G I O N A L I N T E G R AT I...
AI summary This section compares the Net Present Value of Resource Recovery (NPVRR) under a low sustaining capital expenditures (CAPEX) scenario with the base scenario. It outlines adjustments in project timelines, including delayed construction of the Reliability Tie and Regional Interconnection, and delayed retirement of coal units and combustion turbine and wind builds.
2.1C.CAPEX-1 (High Sustaining CaGWh Generator Year 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 Coal 4,016 3,729 3,707 3,686 3,126 3,178 3,034 3,027 2,699 1,78...
AI summary The document presents a detailed table showing capital expenditures (CAPEX) for various electricity generation sources in Nova Scotia from 2021 to 2045, including coal, gas, hydro, tidal, and biomass. The data highlights the declining trend in coal generation and increasing investments in gas, particularly in new combined cycle and combustion turbine facilities, along with steady investments in hydro and biomass.
2.1C.CAPEX-2 (Low Sustaining Ca GWh Generator Year 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 Coal 3,967 3,742 3,746 3,768 3,593 3,704 3,754 3,677 3,516 3,05...
AI summary The text presents a table showing capital expenditures (CAPEX) for various electricity generation sources in Nova Scotia from 2021 to 2045, including coal, gas (existing and new), hydro, tidal, and biomass. The data outlines the projected capacity for each source over time.
% Pumped Storage $2,700 $2,700 0% a Solar PV costs reported in $/kW-ac, reflecting an inverter loading ratio of 1.3 35 4 Summary of Proposed Assumptions Capital Costs (2 of 2) – Fossil and Nuclear Nova Scotia Power IRP Final Report Appendi...
AI summary The document outlines proposed capital costs for various fossil and nuclear technologies, including coal-to-gas conversion, natural gas combined cycle with and without carbon capture and storage, combustion turbines, reciprocating engines, and small modular nuclear reactors. Costs are presented for 2019 and 2030, highlighting percentage changes over time.
5 Summary of Proposed Assumptions Operating Costs – All Technologies Nova Scotia Power IRP Final Report Appendix H Page 13 of 321 Operating Cost Technology Subtechnology Fixed O&M Variable O&M ($/kW-yr) ($/MWh) Wind Onshore $59 $0 Offshore...
AI summary The document presents operating costs for various energy technologies, including fixed and variable O&M costs for wind, solar, biomass, tidal, storage, coal, natural gas, and nuclear. All O&M costs are assumed to escalate at 2% per year.
Reciprocating Engine $27 $9 Nuclear Small modular reactor $140 $0 All O&M costs assumed to escalate at 2% per year. 37 6 Nova Scotia Power IRP Final Report Appendix H Page 14 of 321 FUNDAMENTAL PRICE FORECASTS Commodity Pricing Point Provi...
AI summary The document presents fundamental price forecasts and sustaining capital forecasts for various energy sources, including reciprocating engines, nuclear (small modular reactors), solid fuel, and small hydro. It references the 2020 Integrated Resource Plan (IRP) assumptions and includes details on O&M cost escalations and contract pricing for coal.
32 Resource Options Considered Nova Scotia Power IRP Final Report Appendix H Page 52 of 321 Fossil fuels: coal-to-gas, coal-to-biomass , natural gas (CC, CT, reciprocating engine, CC w/ carbon capture and storage) Renewables: biomass,...
AI summary The document outlines various resource options considered in Nova Scotia Power's Integrated Resource Plan (IRP), including fossil fuels, renewables, energy storage, and emerging technologies. It also describes the process for modeling resource costs, including capital, O&M, fuel prices, and financing assumptions, to forecast levelized costs for Nova Scotia Power from 2019 to 2050.
% Pumped Storage $2,700 $2,700 0% a Solar PV costs reported in $/kW-ac, reflecting an inverter loading ratio of 1.3 35 Summary of Proposed Assumptions Capital Costs (2 of 2) – Fossil and Nuclear Nova Scotia Power IRP Final Report Appendix...
AI summary The text provides capital and operating cost assumptions for various energy technologies, including fossil and nuclear options, as outlined in the Nova Scotia Power Integrated Resource Plan (IRP) Final Report. It details projected costs for coal-to-gas conversion, natural gas combined cycle with and without carbon capture, combustion turbines, reciprocating engines, and small modular nuclear reactors.
he amount of turns and resultant withdrawal rates, etc.) • As per the Dual Fuel Capability option, NS Power will study this option in detail if new gas units are part of the IRP recommendation 2020 IRP ASSUMPTIONS SET 89 Nova Scotia Power...
AI summary The document discusses LNG alternatives as virtual pipelines and outlines assumptions for sustaining capital costs for coal units in the 2020 Integrated Resource Plan (IRP), including high and low sensitivity scenarios for sustaining capital costs.
ng diversity benefits associated with a mix of resources. This could result in the analysis selecting too much of the resources with high ELCC values in the E3 study and too little of other resources. 5. Planning Reserve Margin and Capacit...
AI summary The text discusses concerns with the E3 study's methodology in selecting resources based on ELCC values and raises questions about the relationship between weather data and load profiles in the Capacity Value Study. It also references a response by NS Power to the NSUARB regarding the 2020 ACE Plan, highlighting poor performance of specific hydro feeders.
t. • Does projected sustaining capital for each unit simply reflect historical experience plus inflation, or is the projected capital cost increased to reflect the age of the plant? 9. Renewable Integration The renewable integration sectio...
AI summary The text raises questions about the methodology used in projecting sustaining capital costs for power units, specifically whether inflation and plant age are considered. It also critiques the renewable integration section of the Integrated Resource Plan (IRP) for lacking clarity on technology options and grid service requirements, suggesting a webinar to explain and gather stakeholder feedback.
Envigour Memo Februray 18, 2020 Page 2 of 13 Nova Scotia Power IRP Final Report Appendix H Page 240 of 321 Current and Future CAPEX for Instream Tidal Resources Definition of Technologies Considered Unlike conventional hydro or tidal barra...
AI summary The document outlines current and future capital expenditures (CAPEX) for instream tidal resources in Nova Scotia, detailing different technologies and their deployment. It distinguishes between large-scale and small-scale tidal projects, including specific examples such as DP Energy’s Uisce Tapa Project and Sustainable Marine Energy’s Pempa’q Project.
tive when industries like wind (onshore and offshore) have achieved 16-18%, and of course once a technology reaches maturity this rate slows down a bit, but I don’t see us reaching this point by 2030. So if you were to look at just our tec...
AI summary The text discusses the cost trajectory of tidal energy deployment in Nova Scotia, noting that initial deployment rates may be high but will slow as technology matures. It also critiques the assumption that tidal technology is equivalent to custom-designed hydro projects, arguing that this underpins an overestimated $10 million CAPEX figure by 2030.
4 Nova Scotia Power IRP Final Report Appendix H Page 265 of 321 Project Capital Costs The economies of scale that are achievable for the major components of A-CAES enable it to be a leading low-cost storage solution for large-scale (100+ M...
AI summary The document discusses the capital costs of A-CAES systems, highlighting economies of scale and cost estimates for different discharge capacities and durations in salt and hard-rock geologies. It outlines all-in capital costs, including engineering, procurement, construction, and contingency reserves, with cost ranges reflecting current and future project delivery capabilities.
reports that developers believe “low cost of renewables” a facility of 50MW to 100MW installed capacity. scenario prices are easily achievable NSP should indicate at what project size the costing is associated 4. Supply Side AREA Need to c...
AI summary The text discusses the cost of renewable energy projects, with developers suggesting that low costs for renewables are achievable. It also mentions the need for Nova Scotia Power (NSP) to clarify the project size associated with specific costing. Alternative non-NSP capital costs and sensitivities for wind and storage are considered for modeling purposes.
rements. The capital cost estimates are NS Power internal and represent the total capital cost of the new transmission facilities. 9 Nova Scotia Power IRP Final Report Appendix H Page 291 of 321 IRP Assumptions – Participant Comments March...
AI summary The text discusses capital cost estimates for new transmission facilities provided by Nova Scotia Power, which are internal and represent the total capital cost.
Category Participant Assumption Comment NS Power Response 13. Sustaining SBA Revised assumptions included significant changes to The more significant change in basis of presentation was Capital sustaining capital forecast for coal, CTs and...
AI summary The document discusses revisions to sustaining capital forecasts for coal, CTs, and small hydro, as well as the need for realistic assumptions regarding wind and solar integration strategies and costs. NS Power responded to these points, noting changes in financial assumptions and suggesting a technology conference to explore integration options.
Nova Scotia Power IRP Final Report Appendix I Page 18 of 44 T&D AVOIDED COST METHODOLOGY UPDATE NS Power’s T&D Avoided Cost methodology will be reviewed during the 2020 IRP Process BACKGROUND • NS Power has calculated and provided Avoided...
AI summary Nova Scotia Power is updating its T&D Avoided Cost methodology as part of the 2020 IRP process. The current methodology uses ACE Plans from 2007 onward to calculate avoided costs, focusing on T&D capital investments related to load growth and applying a ratio to forecast future investments.
ng horizon on an NPV basis Cost to Replace Small Hydro Assets vs Sustaining Capex (1.0.A) Wreck Cove Mersey 26 Hydro Assets: Total decommissioning costs relative to sustaining operations – 2.1.C Nova Scotia Power IRP Final Report Appendix...
AI summary The text discusses the cost comparison between replacing small hydro assets and sustaining capital expenditures under different scenarios, including the 2.1C scenario, which involves constrained emissions and higher load leading to increased replacement costs for renewable hydro capacity.
y storage, increasing carbon of other potential replacement options (e.g. battery storage or NGCC costs, or other reasons) prior to the date when significant sustaining units) capital expenditures are anticipated for the diesel CTs.
AI summary The text discusses the consideration of alternative energy storage solutions, such as battery storage or NGCC, in relation to the replacement of diesel combustion turbines, emphasizing the need to evaluate these options before significant capital expenditures are anticipated.
units) capital expenditures are anticipated for the diesel CTs.
AI summary The text mentions that capital expenditures are anticipated for the diesel CTs, highlighting the expected financial investment in this area.
• The preliminary results included a metric calculating an average cost of generation, but the Company was uncertain as to whether it would be used going forward. The Company should provide metrics to help provide insight on affordability...
AI summary The text outlines recommendations for the Company to provide detailed metrics and formulas for portfolio analysis, including affordability, capital investment, and imported power reliance. It also emphasizes the importance of transparency and stakeholder engagement in the process.
s overstated, Plexos based on the depreciable life of the asset and the NS Power should consider shifting to a shorter end effect appropriate discount rate. This process for calculating period (e.g., 10 or 15 years), or eliminating it alto...
AI summary The text discusses the calculation of annualized build costs and the consideration of end effects in the 2045 period, suggesting that NS Power should evaluate the use of a shorter depreciable life or eliminate the end effect altogether to avoid potential bias. NS Power acknowledges the pros and cons of using both the 25-yr NPV with and without end effects.
ogressing consistent with HRM’s goals, then NS Power would need to adopt significantly higher assumptions for building electrification. Page 6 of 53 Nova Scotia Power IRP Final Report Appendix J Page 199 of 245 IRP Participant Comments and...
AI summary NS Power’s 2019 wind capital cost of $2,100 per kW is questioned as being higher than market rates. NS Power acknowledges this and proposes reducing the cost to $1,500 per kW, which would significantly increase near-term wind capacity procurement. A market-based information solicitation is proposed to inform wind cost assumptions.
Compressed Air Hydrostor-01 We believe that A-CAES’s capital costs were inaccurately NS Power’s Final Assumptions provided ranges for Storage modelled. We believe that this played a decisive factor in it costs for storage options which may...
AI summary The text discusses concerns regarding the inaccurate modelling of capital costs for A-CAES (Advanced Compressed Air Energy Storage) technology by NS Power, which may have influenced the selection of preferred resources. Hydrostor argues that a more accurate comparison to lithium-ion systems would have been made using different assumptions for a 500 MW facility with a 4-hour duration.
valuating the continued operation of NS Power’s hydroelectric facilities in the IRP process in the recent Annual Capital Expenditure Plan review. 8 NS Power also committed to IRP review in support of 5 For example, model assumptions regard...
AI summary The document discusses the evaluation of NS Power’s hydroelectric facilities within the Integrated Resource Plan (IRP) process, including commitments to the IRP review and references to an audit of the Fuel Adjustment Mechanism. It also mentions the Annual Capital Expenditure Plan review and related regulatory decisions.
wing this issue in the IRP and using that as an input into its submission for capital investment at Mersey. It is appropriate that there be a thoughtful discussion of the findings so that it is clear what evidence may be drawn from the IRP...
AI summary The document discusses the Integrated Resource Plan (IRP) and its implications for capital investment at Mersey. It highlights the need for a thorough discussion of the hydro system value and the retirement analysis of Mersey, including post-2045 costs and risks. Additionally, it critiques the rate impact model for incorrectly removing incremental fixed cost recovery, which may exaggerate rate impacts.
e peak period of a day, limiting its contribution to reliability. This limitation should be considered in combination with DAFOR in determining its ELCC and the overall system planning reserve margin. Sustaining capital cost profiles Accor...
AI summary The text discusses the need to consider the limitations of peak period contributions to reliability when determining ELCC and system planning reserve margins. It also highlights inconsistencies in the capital cost profiles for Point Aconi, including potential additional investments not reflected in the IRP assumptions, and recommends that NS Power verify and provide detailed updated assumptions.
ng duration energy storage technology is not and has note been given its due in the preferred portfolio solution into the future. We would like to continue to reiterate the following, that Hydrostor: • Be a cost-effective non-wire alternat...
AI summary The text argues that long-duration energy storage, particularly A-CAES, is a cost-effective and cleaner alternative to transmission and fossil fuel assets. It criticizes Nova Scotia Power's Integrated Resource Plan for inaccurately modeling A-CAES capital costs, which may have led to its exclusion from the preferred resource portfolio.
f investment, was economic relative to economic analysis model? decommissioning in all cases.
AI summary The text discusses the economic analysis of investment and decommissioning, focusing on whether the investment was economically viable relative to the economic analysis model.
NS Power expressed the view that the redevelopment project could provide a very long- The anticipated long life of these hydro assets introduces added complexity and uncertainty into the lived asset, on the order of a hundred years. If Mer...
AI summary NS Power argues that the long life of hydro assets like Mersey introduces uncertainty into analysis, particularly regarding potential redevelopment costs in 30-40 years. They note that end effects calculations may not account for these future costs or the possibility of decommissioning, and that reinvestment decisions will be evaluated as part of capital applications.
unit reliability. Point Aconi CA The audit states that “major generator work (2022) and turbine overhaul (2024) will require substantial sustaining capital investment.” This suggests above-average investment levels. The IRP Sustaining capi...
AI summary The audit highlights that Point Aconi requires significant sustaining capital investment for major generator work in 2022 and turbine overhaul in 2024, which is not fully reflected in the IRP capital cost profile. NS Power is urged to verify that its updated capital cost assumptions include these long-term requirements, such as potential limestone mine expansion.
nal Portfolio Study, will be shared with stakeholders. (28) Please provide the sustaining capital cost profiles and underlying assumptions in depth. The final report should include a comparison of the cost of continued operation (including...
AI summary The text requests detailed sustaining capital cost profiles and underlying assumptions for thermal plants, emphasizing the need for a comparison of continued operation costs, including fixed OM&A and sustaining capital.
The final report should include a comparison of the cost of continued operation (including fixed OM&A and sustaining capital) for each of the thermal plants.
AI summary The final report is required to compare the costs of continuing to operate each thermal plant, including fixed operations and maintenance, and sustaining capital expenditures.
2028–2040. NS Power should obtain design and construction pricing for an in-service date of 2028, and then use that cost information to develop informed estimates of costs for later in-service dates. Mersey hydro retirement evaluation The...
AI summary The text discusses NS Power's need to obtain pricing for infrastructure projects with an in-service date of 2028 and the evaluation of Mersey hydroelectric facilities within the Integrated Resource Plan (IRP) process. It references a capital expenditure plan review and a redevelopment project with a budget of $161 million.
energy cost for hydro generation used in the Company’s economic analysis model. This sensitivity appears to indicate that customers would experience a slightly higher cost ($44 million) to retain Mersey through 2045, even with a $227 milli...
AI summary The analysis discusses the economic implications of retaining and redeveloping the Mersey hydro facility, noting potential long-term customer benefits but also highlighting uncertainties around long-term costs and decommissioning. The Integrated Resource Plan (IRP) is identified as a key input for capital investment decisions at Mersey, though the draft report assumes redevelopment will proceed without fully addressing the limitations of the study.
this analysis was conducted using the base case assumptions for the cost of wind. As Mersey provides primarily energy benefits to the NS Power system, 17 the evaluation of any capital applications for Mersey system refurbishment must rely...
AI summary The analysis highlights the need for updated modeling and data in evaluating the Mersey system refurbishment, emphasizing the importance of considering wind and transmission costs. RII recommends delaying capital applications until more accurate data is available to avoid poor decisions.
for further data may introduce delay into the capital application process, but given the uncertain value of the redevelopment project, RII suggests that such a delay may avoid a poorly made decision.
AI summary RII suggests that delaying the capital application process may avoid a poorly made decision due to the uncertain value of the redevelopment project.
erify or correct the findings, as appropriate. This will provide the Board with assurance that future procurements and capital investment activities are evaluated while relying on optimal assumptions. Analysis of the combustion turbine fle...
AI summary The text discusses concerns about the reliability and future operation of NS Power's diesel combustion turbine fleet. While NS Power asserts the continued operation of these units, evidence from FAM audits indicates lower reliability and increased usage than forecasted. Questions remain about the long-term viability and costs of maintaining the fleet.
Nova Scotia Power IRP Final Report Appendix L Page 22 of 125 Comments on Draft IRP Report Page 17 of 21 Sustaining capital cost for Point Aconi We previously commented on an inconsistency between the capital cost profile assumptions for Po...
AI summary The text discusses concerns about the capital cost assumptions for Point Aconi and the need to account for potential future mine expansion costs. It also highlights the value of CO2 emissions reductions and recommends incorporating a CO2 price into future IRP modeling for more accurate evaluations.
regional integration capital expenditures in a fulsome manner, including potential system upgrades required on the NB system associated with increased receipt of energy and firm capacity at Salisbury. These risks do not lead to a recommend...
AI summary The document discusses the need for careful monitoring of capital expenditures and import opportunities related to a regional interconnection strategy, including the inclusion of quantitative indicators in the Integrated Resource Plan (IRP). It also mentions the calculation of Avoided Costs for Demand-Side Management (DSM) scenarios within the IRP.
“optimal” as the software was presented with limited regional integration opportunities. Incremental transmission builds must be examined fully in future studies.’ E1 Concerned about risks of capital investment and potential 2020-11-13; p....
AI summary The text discusses concerns regarding the economic risks of regional integration due to potential price increases in natural gas and imports. It also references the need for further analysis on the Intertie to ensure reliable operation of resource plans beyond the findings of the pre-IRP stability study.
Scotia Power’s existing domestic Hydro AREA No comment n/a resources provide economic benefit to customers CA -‘NS Power should incorporate updated data from resource 2020-11-16; p. and are economically sustained through the procurement an...
AI summary Nova Scotia Power's existing hydro resources provide economic benefits to customers and are economically sustained through capital investment. The Electricity Advisory Council (EAC) suggests that NS Power should use updated data from resource procurement and transmission planning in any capital application for the redevelopment of the Mersey hydroelectric facilities. Adjustments to model performance and ELCC values are also recommended.
igger an update as needed. 3. Pursue economic reinvestment in existing hydro and CA Supports and recommends that sustaining capital costs be 2020-09-18; p. 13/13 combustion turbines with individual capital applications updated and that the...
AI summary The document discusses proposals for sustaining capital investments in thermal units and hydro facilities, including the need for economic justification and updated transmission planning. It also highlights the importance of monitoring low/zero carbon fuel development and suggests assessing natural gas pricing risks and investing in energy storage solutions.
e battery storage of different durations. scale battery storage of different durations. The Plexos results October 5, 2018 These options were integrated into the IRP indicate economic battery builds in different scenarios and including for...
AI summary The text discusses the importance of battery storage in different durations for economic builds and its role as peaking capacity. It also references the Integrated Resource Plan (IRP) and mentions Nova Scotia Power's (NSP) pre-IRP deliverables, including the monitoring of sustaining capital costs for the thermal fleet.
Request / Directive Originator Status NS Power Comments 2018 FAM Audit Recommendation IX-1 Bates White Complete NS Power’s modeling assumptions include the costs of maintaining existing generating assets, including (g) Consider the full co...
AI summary The 2018 FAM Audit Recommendation IX-1 suggests considering the full costs and benefits of maintaining NSPI’s existing generating assets, including environmental costs, sustaining capital costs, OM&G projections, and decommissioning costs. NS Power notes that decommissioning costs for coal units are not included in the capacity expansion model as they will be decommissioned within the planning horizon.