Electric mobility: smart charging, the cornerstone of renewable energy

On the one hand, there are electric cars. More and more people are on the road network. On the other, there is renewable energy. The challenge in terms of low-carbon mobility is to succeed in making the link between the two. Thanks in particular to smart charging.

Until 22 September 2019, Frankfurt (Germany) is hosting the International Motor Show. This year's show marked by a marked increase in the supply of electric vehicles. A sign that manufacturers are ready to take the turn of electric mobility. But on the consumer side, the thorny issue of recharging is still on everyone's lips. Motorists expect speed or, at least, efficiency.

And this efficiency, they might well find it in smart charging, understand the intelligent charge of their electric car. The principle: leave it to smart solutions to automatically launch the recharge of the battery of his vehicle at the best times of the day. When the driver is at the office for example. Or when the price of kWh appears the most competitive. Enough to ensure savings and flexibility.

Flexibility that, in the context of energy transition, also responds to the new difficulties faced by electrical system managers. They need to learn how to integrate more and more renewable energy sources. Solar and wind sources, essentially, are all the more difficult to manage because they are, by nature, intermittent. However, the very idea of smart charging is to adapt to its electric environment and to charge batteries based, for example, on local renewable production.

The V2G, a smart charging 2.0 and a revolution in electric mobility

And in the near future, a new evolution of technology could revolutionize the landscape even more: the Vehicle To Grid or V2G. Nissan and the EDF Group make no mistake about this. They have just signed a cooperation agreement to develop such intelligent charging solutions by combining the technologies carried by the two entities. Because thanks to V2G, energy flows may well start to flow from both the electric system to vehicles and vehicles to the system. A small part of the energy accumulated at some point in the batteries of many electric cars - which, it must be remembered, spend most of their time in the parking lot - can be used, a little later, to power a house, a building or even the electrical system.

Thus the V2G could help smooth the peaks of consumption in the early evening, but especially to make up for a one-time lack of production, when the sun does not shine or when the wind does not blow. Electricity stored in the batteries of electric vehicle fleets can then be used for other uses, and this can be used transparently by users. It's like a huge virtual battery.

But electric cars will also be able to absorb excess wind or solar production. In order to avoid overheating the system. And finally make the electric vehicle an active link in the electric system of tomorrow and a real transition to sustainable electric mobility. In France, the first V2G terminals were installed by Dreev, a subsidiary of Izivia, a few months ago to manage the fleet of 160 vehicles of the SME Hotravail, near Bordeaux.

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