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As states continue to use less coal for electricity, driving electric vehicles becomes even cleaner

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Battery electric vehicles are only as clean as the energy source used to generate the electricity that powers them. These results indicate that coal and oil are the energy sources leading to most emissions, and that hydro, wind, and nuclear are the energy sources leading to least emissions. Natural gas. from coal.

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Carbon emissions from generating electricity for electric vehicles vary greatly across the individual US states

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by Michael Sivak, Sivak Applied Research The overall advantage of battery electric over gasoline vehicles, in terms of well-to-wheels emissions of greenhouse gases, has been well documented. However, the emissions of electric vehicles depend greatly on the energy source used to generate the electricity that powers them.

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U-M study: When, where, how electric delivery vehicles are charged has big impact on GHGs

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In 2019, Amazon announced plans to obtain 100,000 electric delivery vehicles. UPS has ordered 10,000 of them and FedEx plans to be fully electric by 2040. Charging practices that shorten a battery’s lifetime will lead to early battery replacement, adding to the total greenhouse gas emissions associated with that vehicle.

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Technical brief: transportation overtaking electricity generation as the largest source of US CO2 emissions

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A technical brief by Dr. John DeCicco at the University of Michigan Energy Institute shows that transportation is overtaking electricity generation as the largest source of US CO 2. 12-month running averages for transportation and electricity generation since late 2014. per year over the past four years. Source: John DeCicco.

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CMU study finds controlled EV charging can reduce generation cost, but at greater health and environmental costs depending upon the generation mix

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Results from the study also suggest that with sufficient coal plant retirement and sufficient wind power, controlled charging could result in positive net benefits instead of negative. The question of electricity costs vs. health and environmental cost is important to ask everywhere, Michalek said. Credit: ACS, Weis et al.

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OnStar and Google demonstrate concept service for managing charging Chevrolet Volts with renewable energy

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According to the US Energy Information Administration (EIA), US electricity generation in 2010 was 70% fossil fuels (coal 44.9%, natural gas 23.8%); 20% nuclear; and 10% renewable, of which 6.2% Wind accounted for 2.3%. EIA forecasts that the mix in 2035 will shift to include 39% coal; 27% natural gas; and 16% renewables.

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Study: even with high LDV electrification, low-carbon biofuels will be necessary to meet 80% GHG reduction target; “daunting” policy implications

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The same highly electrified scenarios, however, could not satisfy 80% GHG-reduction targets, even assuming 80% decarbonized electricity and no growth in travel demand. Within the transportation sector, the two basic options for reducing petroleum use and greenhouse gas (GHG) emissions are fuel-use reduction and fuel substitution.

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