Clusters of plug-in cars will tax local power grids.
If plug-in electric cars become popular in your neighborhood, you may face an electricity supply crunch when it comes to charging.
There have been a number of studies measuring whether the national power grid can fuel large numbers of electric vehicles. But the biggest concern regarding the impact of plug-ins is at the local level, where adding just a few vehicles could strain a local circuit.
More of the story here.
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