Diogenes wrote:Nice to see the Tesla prospective owners excited about spending that kind of money. Reminds me of the Delorean days.
Using no gasoline does not of course make car "green", where does the electricity come from anyway? Clearly not 'green.'.
Diogenes was a seeker of truth. You have not sought truth.
What is annoying, in the days of Google, is that people like you keep posting this old trope without doing 10 seconds checking. You have not bothered to research your view.
In 3 seconds I found this site, with no more searching than that:
http://www.afdc.energy.gov/vehicles/ele ... ssions.php
Of course this has been thought of. Of course this has been debated. Of course the National Energy Laboratories plus other analysts have looked into this. The UK government has written 150 page reports on all this (google CCC electric cars).
So just for the record:
- it depends where you live in the USA - if you live in the Pacific NW your electricity is essentially clean (hydro electric). Other areas it varies
- even if you live in the Midwest or South, where coal is 50%+ of all electricity (and can be 80-90%) (it's now in the 40s in the USA as a whole, due to the shift to gas for electricity generation) you still get a 'win' on emissions relative to an internal combustion engine-- that's reflected in the mpg figures, and in the emission figures that are given with, for example, every car sold in the UK (they are available in the USA but UK law requires them to be published on the sticker, and company car taxes are linked to the level of emissions)
MPG is actually not a bad proxy and the EPA gives figures c. 100mpg for an electric car like the Nissan Leaf. Remember an ICE has c. 28% efficiency. A gas fired power station has 55%, transmission losses are usually 7-8%, and electric motors are 80%+ efficient. There is power loss in batteries, however, over time. Even a coal fired station is in the low 40s (modern one). Nuclear, wind and hydro electric the thermal conversion efficiency is of course irrelevant (you only care about output).
The argument about subsidies etc. is a bigger one and not to be addressed here.
I only wish to deal in the facts of the matter, and the ease of doing that research in the days of the internets.