How Green Is That Electric Car? And When It Hits 100 M.P.H.?

https://www.nytimes.com/2020/10/15/business/electric-supercars-porsche-taycan-tesla.html

Source: By Paul Stenquist, The New York Times. 

Excerpt: ...A 2012 article in The New York Times summarized a report from the Union of Concerned Scientists that found the environmental benefits of subcompact, modestly powered electric cars like the Nissan Leaf depended on where they were charged. ...many states still relied heavily on coal-fired plants for electricity, and the investigators found that in some areas, electrics were no cleaner than efficient gasoline-powered cars when factoring in the emissions resulting from electricity generation. E.V. technology has advanced considerably since then, and electricity generation in America has shifted, as well. The latest report from the Union of Concerned Scientists, in a February article by David Reichmuth, its senior vehicles engineer, is much more optimistic than the one eight years ago. ...the group found that electric vehicles were responsible for about 10 percent less overall emissions in 2018 than they were just two years earlier. ...In this study, the average electric vehicle in the United States was found to be responsible for emission levels equivalent to those generated by a gasoline vehicle that gets 88 miles per gallon. In areas where a lot of coal is still burned to make electricity, the electric vehicle m.p.g. equivalency number can fall to as low as 49 miles to a gallon, but those areas are few and less densely populated than regions with clean power....