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Assessing the feasibility of carbon dioxide mitigation options in terms of energy usage

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Title: Assessing the feasibility of carbon dioxide mitigation options in terms of energy usage
Authors: Babacan, O
De Causmaecker, S
Gambhir, A
Fajardy, M
Rutherford, AW
Fantuzzi, A
Nelson, J
Item Type: Journal Article
Abstract: Measures to mitigate the emissions of carbon dioxide (CO2) can vary substantially in terms of the energy required. Some proposed CO2 mitigation options involve energy-intensive processes that compromise their viability as routes to mitigation, especially if deployed at a global scale. Here we provide an assessment of different mitigation options in terms of their energy usage. We assess the relative effectiveness of several CO2 mitigation routes by calculating the energy cost of carbon abatement (kilowatt-hour spent per kilogram CO2-equivalent, or kWh kgCO2e–1) mitigated. We consider energy efficiency measures, decarbonizing electricity, heat, chemicals and fuels, and also capturing CO2 from air. Among the routes considered, switching to renewable energy technologies (0.05–0.53 kWh kgCO2e–1 mitigated) offer more energy-effective mitigation than carbon embedding or carbon removal approaches, which are more energy intensive (0.99–10.03 kWh kgCO2e–1 and 0.78–2.93 kWh kgCO2e–1 mitigated, respectively), whereas energy efficiency measures, such as improving building lighting, can offer the most energy-effective mitigation.
Issue Date: 1-Sep-2020
Date of Acceptance: 1-Jun-2020
URI: http://hdl.handle.net/10044/1/82471
DOI: 10.1038/s41560-020-0646-1
ISSN: 2058-7546
Publisher: Nature Research
Start Page: 720
End Page: 728
Journal / Book Title: Nature Energy
Volume: 5
Copyright Statement: © The Author(s), under exclusive licence to Springer Nature Limited 2020.
Keywords: Science & Technology
Technology
Energy & Fuels
Materials Science, Multidisciplinary
Materials Science
LIFE-CYCLE ASSESSMENT
CO2 UTILIZATION
CAPTURE
PERFORMANCE
EFFICIENCY
EMISSIONS
SYSTEMS
STORAGE
FUTURE
FUELS
Science & Technology
Technology
Energy & Fuels
Materials Science, Multidisciplinary
Materials Science
LIFE-CYCLE ASSESSMENT
CO2 UTILIZATION
CAPTURE
PERFORMANCE
EFFICIENCY
EMISSIONS
SYSTEMS
STORAGE
FUTURE
FUELS
0906 Electrical and Electronic Engineering
0907 Environmental Engineering
Publication Status: Published
Online Publication Date: 2020-07-06
Appears in Collections:Physics
Experimental Solid State
Grantham Institute for Climate Change
Faculty of Natural Sciences