Can electric cars actually save electricity? The Washington Post

25 мая 2014 | Author: | Комментарии к записи Can electric cars actually save electricity? The Washington Post отключены
Interesting » Electric Cars

Can electric cars actually electricity?

This post has updated below.


One criticism of cars is that they just replace one source of pollution with another. of a combustion engine that gasoline, you get a plug-in vehicle depends on electricity from coal. In extreme cases, can look like a dismal One recent report from the Center for Energy and Transportation that, in many parts of a Nissan Leaf powered by power plants could produce more carbon per mile than a comparable car.

Bad news.

(Felix Ordonez/Reuters) as electric-car enthusiast Peder argues. there’s another way to at these comparisons. After it also takes a lot of electricity to refine, and transport that And factoring that in can paint a different picture in some (though probably not the China as I’ll explain below).

In the States, Norby concludes, takes more electricity to the average gasoline car 100 miles, it does to drive an electric car 100 Is that true? Because if so, the case for shifting to electric looks pretty good.

How is that possible? Petroleum use a lot of electricity Norby estimates it takes about 6 kilowatt-hours of per gallon of gasoline. [ Update . isn’t quite right, see He then tacks on the electricity for extraction, refining, and shipping and up with a “conservative” estimate of 8 kwh per gallon. If that’s the case, a gas-powered car that gets 22 per gallon would use about 40 kwh of to go 100 miles. An average electric by contrast, would only use 30 kwh of electricity to go the same distance.

In words, not only does the car use no gasoline it would appear to use electricity, too.

Interesting » Electric Cars

Now, before EV backers get too there are all sorts of ways to these numbers. Fuel-economy in the United States are rising and most new cars get significantly mileage than this (in the average new passenger car got about miles per gallon ). You’d have to look at what of electricity was being used in case (natural gas vs. coal, for What’s more, this doesn’t change the analysis for mentioned above, since report did do a full life-cycle that included a rough for refinery-related emissions.

Still, it’s a striking and one you’d expect to hear a lot often. Sebastian Blanco at notes that Nissan has to bring it up. but only very

Update . It looks like analysis is a little off. to commenter dmccabe1 for bringing to my attention, any my apologies for not catching it

According to this Argonne and this analysis by the Department of Jacob Wardit takes 6 kwh of energy to refine a gallon of not 6 kwh of electricity, as I originally stated. some of the energy inputs a refinery uses (such as gas) could be used to electricity instead if we shifted from regular cars to cars. But even in that you wouldn’t get a full 6 kwh of electricity less than half (Note, however, that you need additional energy to and transport the gasoline.)

All told, electric cars look pretty good in especially since they’re not any gasoline and putting additional in the air, but it looks like not, strictly speaking, that “It takes electricity to drive the average car 100 miles, than it does to an electric car 100 miles.” This explains why Nissan abandoned its The energy comparison still favorable for electric cars, but the point isn’t nearly as and clean.

Interesting » Electric Cars
Interesting » Electric Cars
Interesting » Electric Cars

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