Personal vehicle electrification and charging solutions for high-energy days

Wei Wei, Sankaran Ramakrishnan, Zachary A. Needell and Jessika E. Trancik ()
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Wei Wei: Massachusetts Institute of Technology
Sankaran Ramakrishnan: Massachusetts Institute of Technology
Zachary A. Needell: Massachusetts Institute of Technology
Jessika E. Trancik: Massachusetts Institute of Technology

Nature Energy, 2021, vol. 6, issue 1, 105-114

Abstract: Abstract Questions remain on the effectiveness of different proposals for battery electric vehicle (BEV) charging and other supporting infrastructure. Here we investigate options for charging BEVs and supplementing them with long-range vehicles, including on the infrequent high-energy days that can otherwise impede personal vehicle electrification. We examine travel activities and their energy requirements—in Seattle and US-wide—to identify strategies that fit existing lifestyles. We find that home charging on- or off-street is pivotal in all strategies and that highway fast charging and/or supplementary vehicles can be impactful additions. For example, home charging can support the year-round energy requirements of approximately 10% of Seattle vehicles, assuming a lower-cost BEV, but adding occasional highway fast charging or supplementary vehicles on four days per year raises this value to nearly 40%. Infrequent supplementary vehicles may be needed even as battery technology improves. Our results outline potential solutions for nations, cities, companies and communities seeking to support widespread vehicle electrification despite the challenge of high-energy days.

Date: 2021
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DOI: 10.1038/s41560-020-00752-y

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