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Research article2021Peer reviewedOpen access

Life Cycle Assessment of Autonomous Electric Field Tractors in Swedish Agriculture

Lagnelov, Oscar; Larsson, Gunnar; Larsolle, Anders; Hansson, Per-Anders

Abstract

There is an increased interest for battery electric vehicles in multiple sectors, including agriculture. The potential for lowered environmental impact is one of the key factors, but there exists a knowledge gap between the environmental impact of on-road vehicles and agricultural work machinery. In this study, a life cycle assessment was performed on two smaller, self-driving battery electric tractors, and the results were compared to those of a conventional tractor for eleven midpoint characterisation factors, three damage categories and one weighted single score. The results showed that compared to the conventional tractor, the battery electric tractor had a higher impact in all categories during the production phase, with battery production being a majority contributor. However, over the entire life cycle, it had a lower impact in the weighted single score (-72%) and all three damage categories; human health (-74%), ecosystem impact (-47%) and resource scarcity (-67%). The global warming potential over the life cycle of the battery electric tractor was 102 kg CO(2)eq.ha(-1) y(-1) compared to 293 kg CO(2)eq.ha(-1) y(-1) for the conventional system. For the global warming potential category, the use phase was the most influential and the fuel used was the single most important factor.

Keywords

life cycle assessment; battery electric vehicle; tractors; environmental impact; agriculture

Published in

Sustainability
2021, volume: 13, number: 20, article number: 11285
Publisher: MDPI

SLU Authors

UKÄ Subject classification

Environmental Sciences related to Agriculture and Land-use

Publication identifier

  • DOI: https://doi.org/10.3390/su132011285

Permanent link to this page (URI)

https://res.slu.se/id/publ/114366