the automotive industry needs to clean up its act, but are electric cars really
that green? How environmentally friendly can an electric car be if its ultimate
energy source is an oil fired power plant?
are many different types or EV, a plug-in hybrid for example still uses
internal combustion as its main power source, but can charge its internal
battery from the mains. Broadly-speaking its midway between petrol and pure
battery for efficiency, but has similar range to a petrol car.
studies have found that electric cars are more efficient, that means less
greenhouse gas and other emissions than cars powered solely by internal
combustion engines. Ok, so studies prove
running an EV is greener that a diesel or petrol car, but what about the
environmental effects of building the electric car?
report by the Ricardo consultancy estimated that production of an average
petrol car produces emissions equivalent of 5.6 tonnes of CO2. Yet the figure
for an average electric car, the figure is a hefty 8.8 tonnes (nearly half of
which is incurred in producing the battery). Not a great advert for what is
supposed to be environmental conscious transport! The same report estimated
that over its whole lifecycle, the electric car would still be responsible for
80% of the emissions of the petrol car.
appears that transport technology still has a long way to go to save the