Electric vehicles are considered as a key technology for sustainable transport. The use of biofuels in vehicles with conventional combustion engines, however, also offers the possibility for a substantial reduction of greenhouse gas emissions, without requiring costly batteries and long charging times and without significantly limiting the driving range. A comparison of environmental impacts between both options needs to be based on a life cycle perspective. First screening results presented in this paper show that a diesel car fuelled with RME has considerably lower climate impacts than a comparable battery electric vehicle charged with average German electricity. On the other hand, the use of RME has disadvantages in other impacts categories such as eutrophication. Battery electric vehicles charged with renewable electricity in turn have the best climate impact balance of the considered options and also show among the lowest impacts in eutrophication. However, other biofuels such as palm oil and the use of biomass residues offer further reduction potentials, but possibly face limited resources and land use changes.
The 'renewables' challenge - biofuels vs. Electric mobility
2011
6 Seiten, 4 Bilder, 16 Quellen
Conference paper
English
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