Cited by 115Environmental Impact and SustainabilityWater-Energy-Food Nexus StudiesBioenergy crop production and management

Accounting for the water impacts of ethanol production

Open access
Fingerman, Kevin R, Torn, Margaret S, O’Hare, Michael H, Kammen, Daniel M·2010·Environmental Research Letters

Abstract

Biofuels account for 1–2% of global transportation fuel and their share is projected to continue rising, with potentially serious consequences for water resources. However, current literature does not present sufficient spatial resolution to characterize this localized effect. We used a coupled agro-climatic and life cycle assessment model to estimate the water resource impacts of bioenergy expansion scenarios at a county-level resolution. The study focused on the case of California, with its range of agroecological conditions, water scarcity, and aggressive alternative fuel incentive policies. Life cycle water consumption for ethanol production in California is up to 1000 times that of gasoline due to a cultivation phase that consumes over 99% of life cycle water use for agricultural biofuels. This consumption varies by up to 60% among different feedstocks and by over 350% across regions in California. Rigorous policy analysis requires spatially resolved modeling of water resource impacts and careful consideration of the various metrics that might act to constrain technology and policy options.

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  • The production of biofuel crops can lead to competition for natural resources, particularly land, food, and water.

    “Although biofuels are renewably sourced, the production of biofuel crops can lead to competition for natural resources, particularly land, food, and water [61,62].”
  • Large-scale bioenergy production and associated additional demand for irrigation may further intensify existing pressures on water resources.

    “Large-scale bioenergy production and associated additional demand for irrigation may further intensify existing pressures on water resources [21].”

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Authors
Fingerman, K. R., Torn, M. S., O’Hare, M. H., & Kammen, D. M.
Affiliations
  • University of California, Berkeley (US)
  • Lawrence Berkeley National Laboratory (US)
Corresponding author
Kammen, Daniel M
Venue
Environmental Research Letters
Published
2010-01
Volume
5
Issue
1
Pages
014020
ISSN
1748-9326 (ISSN-L)
OpenAlex
W2162937654
Cited by
115
References
30
Citations by year
2026: 1 · 2025: 5 · 2024: 2 · 2023: 1 · 2022: 2 · 2021: 15 · 2020: 3 · 2019: 3 · 2018: 12 · 2017: 8 · 2016: 16 · 2015: 8 · 2014: 8 · 2013: 9 · 2012: 11
FWCI
9.55
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • California Air Resources Board
  • California Energy Commission
  • Energy Biosciences Institute
  • European Commission
  • University of California, Davis
Topics
  • Physical Sciences › Environmental Science › Environmental Engineering › Environmental Impact and Sustainability
  • Physical Sciences › Environmental Science › Water Science and Technology › Water-Energy-Food Nexus Studies
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Bioenergy crop production and management
Keywords
ethanol production, biofuels, water consumption, life cycle assessment, water scarcity, feedstock, California, biofuel policy, agricultural water use

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