The use of electric vehicle (EV) has been widely recognized as an effective way to reduce greenhouse gas (GHG) emissions from transportation sector. However, the geographic difference of GHG emission reduction from EV deployment is seldom explored. This paper presents a study on the total GHG emissions generated from the life cycle of an EV (represented by Nissan Leaf) and an internal combustion vehicle (ICV) (represented by Toyota Corolla) for benchmarking on the potential emission reductions in the United States. The differences of electricity mix and driving style in each state are considered in the analysis. The results indicate a 43% GHG emissions reduction from ICV with the deployment of EV under the current average United States’ electricity generation scheme and transportation style. But the life cycle GHG emission reductions vary significantly from state to state in the U.S. Some states such as Indiana, Wyoming and West Virginia can only get 7237, 9501 and 9860 kg CO2 equivalent reduced, while some states such as Vermont, New Jersey and Idaho can get 57915, 57206 and 49039 kg CO2 equivalent GHG emissions reduced. This study can be useful in supporting future decision-making and strategy development for EV deployment in the U.S.

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