Some
of us are old enough to remember a short-lived revival of the electric car in
the 1980’s which never really took off commercially. According to Wikipedia the present day
interest in electric cars has come about “due to advances in battery and power
management technologies, concerns about increasing oil prices, and the need to
reduce greenhouse gas emissions.” In
addition, government tax credits and other incentives have helped to give the
industry a boost.
All-electric
vehicles (EVs) run only on electricity that is powered by rechargeable battery
packs. They have many advantages over
gas fueled vehicles but some disadvantages as well. The U.S. Department of Energy cites their
energy efficiency by stating, “Electric vehicles convert about 59–62% of the
electrical energy from the grid to power at the wheels—conventional gasoline
vehicles only convert about 17–21% of the energy stored in gasoline to power at
the wheels.” EVs are environmentally
friendly and can be a step toward reducing our energy dependence.
The
biggest drawback to EVs are they can only travel from 100 to 200 miles without
requiring a battery charge while gas fueled engines can go 300 miles or more
before refueling. Charging times for
batteries is another problem. A quick
charge of 80% takes a half hour and a full charge is between 4 to 8 hours.
This
is why the Washington Post recently published an article reporting that workplace chargers will be necessary for the success
of EVs. The good news on that front is
that it is predicted by the end of this year there will be 12,000 workplace
charger sales, and by the end of the decade, over 63,000.
Sources:
en.wikipedia.org/wiki/Electric_car
fueleconomy.gov/feg/evtech.shtml
washingtonpost.com/cars/why-workplace-charging-is-important-it-sells-electric-cars/2014/06/30/20c73f42-0074-11e4-b203-f4b4c664cccf_story.html
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