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Life cycle emissions assessment of transition to low-carbon vehicles in Japan: combined effects of banning fossil-fueled vehicles and enhancing green hydrogen and electricity

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Abstract

This paper examines the impact on the life cycle greenhouse gas (GHG) emissions reduction when fossil-fueled ICE gasoline, diesel and natural gas vehicles, hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs) are banned in a step-by-step manner from 2035. We examine the impact of vehicle bans on life cycle GHG emissions and on the marginal cost (MC) of emissions reduction using four different scenarios defined by hydrogen production method, renewable energy share, and infrastructure development for refueling stations. The vehicle penetration and the fuel demand are determined by a consumer choice model characterized by a multinomial logit algorithm. Our analysis found that vehicle bans significantly promote battery electric vehicles (BEVs) for mini-sized vehicles and hydrogen fuel cell vehicles (FCVs) for light and heavy-duty vehicles. A vehicle ban that excludes BEVs and FCVs from 2035 under an enhanced infrastructure plan can reduce the life cycle GHG emissions as much as 438 million tonnes by 2060 compared to the 2017 level. The MC of the life cycle GHG mitigation decreases continuously and reaches as low as $482 per tonne CO2eq in 2060. However, if PHEVs are excluded from the ban, the life cycle GHG emissions are reduced more by 88 Mt-CO2eq in 2060 at a lower MC of $122 per tonne CO2eq. This is due to decreases in GHG emissions from VP where the replacement of PHEVs for BEVs and FCVs reduces the production of batteries and fuel cells.

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Abbreviations

BaU:

Business as usual

BEV:

Battery electric vehicle

Bt-CO2eq:

Billion tonnes-CO2 equivalent

CCS:

Carbon capture storage

FCV:

Hydrogen fuel cell vehicle

GDP:

Gross domestic product

GHG:

Greenhouse gas

HDV:

Heavy-duty vehicle

HEV:

Hybrid electric vehicle

ICEV:

Internal combustion engine vehicle

LC:

Life cycle

LDV:

Light-duty vehicle

LEV:

Low-emission vehicle

MC:

Marginal cost

Mt-CO2eq:

Million tonnes-CO2 equivalent

MV:

Mini-sized vehicle

NGV:

Natural gas vehicle

PHEV:

Plug-in hybrid electric vehicle

TtW:

Tank-to-wheel

VP:

Vehicle production

WtT:

Well-to-tank

WtW:

Well-to-wheel

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Acknowledgements

The UniSyD_JP model was developed while the authors were visiting Unitec Institute of Technology (Unitec), New Zealand. We would like to thank Unitec for financial support and generous hospitality while visiting Unitec.

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Correspondence to Akihiro Watabe.

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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

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Watabe, A., Leaver, J., Shafiei, E. et al. Life cycle emissions assessment of transition to low-carbon vehicles in Japan: combined effects of banning fossil-fueled vehicles and enhancing green hydrogen and electricity. Clean Techn Environ Policy 22, 1775–1793 (2020). https://doi.org/10.1007/s10098-020-01917-9

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  • DOI: https://doi.org/10.1007/s10098-020-01917-9

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