United States Department of Transportation
i
Vessel Electrification Investigation for the NCDOT Ferry Division Fleet
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2023-10-31
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[PDF-38.04 MB]
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Edition:Final Report July 1, 2021 -Oct 31, 2023
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Abstract:Ferry electrification is a growing domestic and global trend, driven by an interest in reducing operational and maintenance costs, and mitigating emissions at ports. Ferries are particularly well suited for electrification due to their relatively short travel distances over fixed routes, predictable schedule, and their ample onboard space for battery packs and equipment. The purpose of this investigation was to evaluate the technical and economic feasibility of electrifying vessels in the NCDOT Ferry Division fleet as well as to provide a preliminary implementation plan for prioritizing which vessels should be electrified, if any. In this study, the research team conducted a literature review, lifecycle cost analysis (LCCA), and emissions analysis. Additionally, the research team conducted interviews with technology integrators, utilities, naval architects, battery system suppliers, and ferry charging system suppliers, as well as ferry crossing site visits. At the four ferry routes included in this study, replacement of the current vessels with plug-in hybrid vessels is advantageous with respect to lifecycle cost, emissions, and human health impacts. The most economical configuration at all four routes is a plug-in hybrid vessel charging on one side of the ferry crossing and utilizing a shoreside energy storage system to reduce overall power demand from the electrical grid. The research team recommend NCDOT Ferry Division implement ferry electrification in this order: Currituck Sound, followed by Pamlico River, Neuse River, and finally Cape Fear River. This prioritization is based on lifecycle cost, emissions, vessel age, potential grid infrastructure improvements, the number of vessels operated at each route, and the number of crossings per vessel per day.
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