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| A smart charger for electric cars has been developed at the Pacific Northwest Nat'l Lab in Wash. The device can be programmed to charge the vehicle during times of the day when average power demand and the price for electricity is the lowest, such as 3 a.m. The gov't projects nearly 1 mil electric cars could be sold by 2015, creating the potential to overload power grids in some cities if most drivers try to charge their cars right after rush hour, when electric demand is already high. |
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