Journal
EARTHS FUTURE
Volume 8, Issue 2, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2019EF001428
Keywords
Sustainable development; biofuel; environmental footprint; hydrogen; renewable energy; environmental assessment
Funding
- European Union's Horizon 2020 research and innovation programme [689669]
- H2020 Societal Challenges Programme [689669] Funding Source: H2020 Societal Challenges Programme
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Replacing fossil fuels in the transport sector by renewable energy will help combat climate change. However, lowering greenhouse gas emissions by switching to alternative fuels or electricity can come at the expense of land and water resources. To understand the scale of this possible trade-off, we compare and contrast carbon, land, and water footprints per driven km in midsize cars utilizing conventional gasoline, biofuels, bioelectricity, solar electricity, and solar-based hydrogen. Results show that solar-powered electric cars have the smallest environmental footprints per km, followed by solar-based hydrogen cars, and that biofuel-driven cars have the largest footprints.
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