Electric Vehicles Are Indeed More Beneficial for the Environment Than Gasoline Cars, Yet Their Source of Power Is Important: Research

      Chevrolet

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      While electric vehicles (EVs) do not emit tailpipe pollutants, there are additional aspects to consider when evaluating their environmental impact. Manufacturing plays a significant role, as does the source of their electricity. Critics often use this to challenge the ecological advantages of EVs, but a recent study confirms that a vehicle that doesn’t emit pollutants during operation is indeed the more environmentally friendly choice.

      This research was published in May in the journal Environmental Research Letters. The key finding is that EVs can decrease emissions by 40-60% compared to internal combustion vehicles “in most areas.” However, the precise reduction in emissions is contingent upon several factors, primarily the makeup of the local power grid where they are used. Coal-powered plants increase the effective emissions of EVs charged by the electricity they produce, while renewable energy sources have the opposite effect.

      Ford

      “The mix of electricity sources is the main factor in these regional disparities,” states the study's abstract, “leading to more consistent and significant emissions reductions if the electricity supply becomes less carbon-intensive.”

      The Union of Concerned Scientists (UCS) has been making the same argument for over a decade. They have been monitoring real-world EV emissions in the U.S. since the modern EV era began, illustrating how emissions have fallen as the grid has become cleaner. Currently, the average EV in the U.S. has emissions comparable to a gasoline vehicle achieving 96 miles per gallon, according to the UCS. The organization offers an online tool that estimates emissions based on the year, make, and model in your ZIP code—useful for prospective EV buyers.

      Driving habits also significantly influence emissions, according to this recent study. Researchers discovered that urban driving conditions better optimize emissions reductions compared to rural driving. In consistent urban situations, plug-in hybrids could achieve 80-90% of the emissions reductions of fully electric vehicles, assuming regular charging and use in electric mode. This number drops to 60% in rural settings.

      This indicates that, provided there is high mileage and extensive urban driving, local governments or fleet operators seeking to reduce emissions would only need to achieve a 9% adoption rate of EVs for a 10% reduction in emissions. Conversely, a fleet with lower annual mileage but higher rural driving would require a 42% adoption rate of EVs to realize the same emissions savings. In comparison to the electricity mix and driving patterns, local climate is noted to have “a more moderate effect” on relative emissions, according to the study.

      No emission reductions can occur if consumers do not purchase EVs, and on this front, the study offers positive news. Researchers indicated that EVs are cost-competitive with internal combustion vehicles “in many areas and for many individuals,” primarily influenced by the price of electricity versus gasoline. The introduction of more affordable EVs, such as the Slate pickup and its Ford competitor, should improve the financial outlook for at least some buyers.