Electromobility makes sense only if car batteries are charged using electricity from renewable energy sources.

But the supply of green electricity is not always adequate. An intelligent charging station can help, by adapting the recharging times to suit energy supply and network capacity.

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Germany aims to have one million electric vehicles — powered by energy from renewable sources -on the road by 2020. And, within ten years, the German environment ministry expects “green electricity” to make up 30 percent of all power consumed. Arithmetically speaking, it would be possible to achieve CO2-neutral electromobility. But, in reality, it is a difficult goal to attain. As more and more solar and wind energy is incorporated in the power grid, the proportion of electricity that cannot be controlled by simply pressing a button is on the increase. In addition, there is a growing risk that the rising number of electric vehicles will trigger extreme surges in demand during rush hour……

For more on this article: http://www.sciencedaily.com/releases/2010/04/100421111353.htm

Source: Science Daily / University of Toronto

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