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Monday, 20 April 2009
Electric cars are NOT zero emissions...
... unless you can guarantee the electricity comes from a 100% renewable source.It frustrates me that much of the recent press coverage describes electric vehicles as zero-carbon as they are obviously not - their carbon performance should be rated as the average emissions from the mains electricity of that particular country. "Zero-emissions" is just greenwash and it should stop now before the inevitable backlash.
My second frustration is trying to get an accurate estimation of what those emissions are. Just this weekend I have seen quotes suggesting that they are roughly the same as the petrol equivalent, that they are 40% more efficient and in one case (the Tesla sports car) just 25% of a small petrol sports car. Not all of these can be right.
We need a proper method of calculating these emissions and we need it now.
Labels: carbon emissions, electric vehicles, zero emission vehicles
# posted by Gareth Kane : 09:10
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