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Smart Charging of Electric Vehicles at Home Will Reduce the Load on Electrical Grid

An electric car charging space in Aarhus, Denmark. (Credit: Flickr @ Michael Edson http://www.flickr.com/photos/46758972@N00/)

Enabling owners to charge their electric-drive vehicle (EDV) at home is a major factor in promoting their diffusion, while smartly managed and planned recharging time and rates would mitigate the need for expansion of the electricity grid and generation capacity. These are the main findings of a JRC report analyzing the probable load on the electricity network by drivers recharging their electric cars in different probable scenarios.

The report “Projections for electric vehicle load profiles in Europe based on travel survey data” estimates load profiles on the basis of detailed travel survey data from six European countries (France, Germany, Italy, Poland, Spain and the United Kingdom), representing more than ¾ of the new car market in European Union.

The scenarios show that drivers charge their cars whenever they are parked, which would result in several electricity-demand peaks across the day, with significant spikes in the morning, early and especially late afternoon. Controlled recharging – for example during periods of overall lower electricity consumption – supported by ‘smart’ power grids, able to respond to the consumer’s behaviour, is a way to prevent overburdening the network.
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