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Open AccessArticle

Environmental and Economic Evaluation of Fuel Choices for Short Sea Shipping

School of Technology and Innovations, University of Vaasa, P.O. Box 700, 65101 Vaasa, Finland
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This paper is an extended version of our paper “Emission reduction by biogas use in short sea shipping” published in Integrated Energy Solutions to Smart and Green Shipping, Proceedings of the INTENS public project seminar, Espoo, Finland, 13 March 2019; Zou, G., Ed.; VTT Technical Research Centre of Finland, 2019, pp. 102–106.
Clean Technol. 2020, 2(1), 34-52; https://doi.org/10.3390/cleantechnol2010004
Received: 19 December 2019 / Revised: 10 January 2020 / Accepted: 20 January 2020 / Published: 22 January 2020
The shipping industry is looking for strategies to comply with increasingly stringent emission regulations. Fuel has a significant impact on emissions, so a switch to alternative fuels needs to be evaluated. This study investigated the emission performances of liquefied natural gas (LNG) and liquefied biogas (LBG) in shipping and compared them to conventional marine diesel oil (MDO) combined with selective catalytic reduction (SCR). For assessing the complete global warming potential of these fuels, the life-cycle approach was used. In addition, the study evaluated the local environmental impacts of combustion of these fuels, which is of particular importance for short sea shipping operations near coastal marine environment and residential areas. All three options examined are in compliance with the most stringent emission control area (ECA) regulations currently in force or entering into force from 2021. In terms of local environmental impacts, the two gaseous fuels had clear advantages over the MDO + SCR combination. However, the use of LNG as marine fuel achieved no significant CO2-equivalent reduction, thus making little progress towards the International Maritime Organization’s (IMO’s) visions of decarbonizing shipping. Major life cycle GHG emission benefits were identified by replacing fossil fuels with LBG. The most significant challenge facing LBG today is fuel availability in volumes needed for shipping. Without taxation or subsidies, LBG may also find it difficult to compete with the prices of fossil fuels. View Full-Text
Keywords: marine fuels; short sea shipping; LBG; LNG; MDO; global warming potential; life cycle assessment marine fuels; short sea shipping; LBG; LNG; MDO; global warming potential; life cycle assessment
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Spoof-Tuomi, K.; Niemi, S. Environmental and Economic Evaluation of Fuel Choices for Short Sea Shipping. Clean Technol. 2020, 2, 34-52.

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