A University of Minnesota study published in PNAS looks at alternatives including ethanol and electricity and determined that "it's hard to beat gasoline." Even electric vehicles can do better or worse depending on how utilities source electricity.
Seth Borenstein, science writer for The Associated Press, reports on a new study published Dec. 15 by the Proceedings of the National Academy of Sciences (PNAS) that evaluates the "life cycle air quality impacts of conventional and alternative light-duty transportation in the United States."
The authors published this amusing two-minute YouTube video that summarizes their findings as well if not better than the abstract on the PNAS.
The results might surprise true-believers in electric vehicles (EVs) and other alternatives to gasoline and diesel-burning internal combustion engine vehicles. However, it turns out this is our third report in as many years (see "Related" below) on this aspect of EVs, and each time, the results are the same.
Note the bar chart published in the Reason blog (copied from PNAS) showing mortality rates from air pollution associated with conventional and alternative powered vehicles.
"It's kind of hard to beat gasoline," said study co-author Julian Marshall, an engineering professor at the Center for Transportation Studies at the University of Minnesota, referring to both public health benefits and even global warming. "A lot of the technologies that we think of as being clean ... are not better than gasoline."
What's key is the power portfolio of the utility where the EV is charged, even the Department of Energy recognizes the importance of the utility power sources—you can determine the "Greenhouse Gas Emissions for Electric and Plug-In Hybrid Electric Vehicles" by inserting your zip code and type of EV.
States with high "Renewable and Alternative Energy Portfolio Standards" make EVs a good pick if you want to drive a green car. In fact, California goes even further by having a low carbon fuel standard where all fuels are evaluated in terms of greenhouse gas emissions.
As we noted last year, Washington and Vermont may be two of the two best states to own an EV—due to high percentages of hydro and nuclear power, respectively, in their energy portfolio. Not so in states with utilities dominated by coal power.
FULL STORY: Why Your All-Electric Car May Not Be So Green
Pennsylvania Mall Conversion Bill Passes House
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Coming Soon to Ohio: The Largest Agrivoltaic Farm in the US
The ambitious 6,000-acre project will combine an 800-watt solar farm with crop and livestock production.
World's Largest Wildlife Overpass In the Works in Los Angeles County
Caltrans will soon close half of the 101 Freeway in order to continue construction of the Wallis Annenberg Wildlife Crossing near Agoura Hills in Los Angeles County.
California Grid Runs on 100% Renewable Energy for Over 9 Hours
The state’s energy grid was entirely powered by clean energy for some portion of the day on 37 out of the last 45 days.
New Forecasting Tool Aims to Reduce Heat-Related Deaths
Two federal agencies launched a new, easy-to-use, color-coded heat warning system that combines meteorological and medical risk factors.
AI Traffic Management Comes to Dallas-Fort Worth
Several Texas cities are using an AI-powered platform called NoTraffic to help manage traffic signals to increase safety and improve traffic flow.
City of Costa Mesa
Licking County
Barrett Planning Group LLC
HUD's Office of Policy Development and Research
Mpact Transit + Community
HUD's Office of Policy Development and Research
Tufts University, Department of Urban and Environmental Policy & Planning
City of Universal City TX
ULI Northwest Arkansas
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