One of the main cons with electric cars is the storage of electricity that moves. Batteries are not saved as much electricity to make long journeys, which determines that in order to travel more miles, you have to put more batteries. Nevertheless the use of these cars is one of the goals that humanity must be imposed to combat global warming, as fossil fuel combustion accounts for much of the emissions of greenhouse gases into the atmosphere. So to make a viable electric car is really organic, not only have to get better batteries, but feed them with renewable energy.

In Germany they are betting to get a million electric vehicles powered only by renewable energy by 2020. They also hope that in this term green electricity account 30 percent of the country’s energy consumption. The problem faced is that it is difficult to achieve a goal such as electromovilidad is completely organic. There is also the danger that, if the electric car industry is growing faster than renewables, which will lead to increased energy consumption to be covered with clean energy, so electric cars would still pollute, but a lesser degree than burning fossil fuels.

To deal with this while achieving the goal, Dominik Noer, the Fraunhofer Institute for Solar Energy, has developed a smart grid system. It is based on electric cars with a capacity to store much energy. Assuming that the cars are usually parked 20 of the 24 hours a day, is that enough time to reload if they are electric, using peak electricity from wind or solar energy, and also when energy demand is lower, so as not to affect the peak hour power consumption.

This intelligent charging system could help inject demand for electric cars to the electricity network is not saturated at peak hours. The system of smart charging stations is a device that allows electric cars recharged when renewable energies are at their peak of energy injection to the network. Thus, not only avoid the rush hour recharge, but making full use of peak wind and solar, which is sometimes wasted. Wind and solar are dependent on wind and sun, respectively, and therefore sometimes have their maximum peak power production just as demand is lower, making that energy is lost as it can not be stored. With the advent of electric cars, and with this intelligent charging system, could exploit this extra wasted.

The initiative also is betting that the recharge is charged less at the time of peak of renewable generation, and more expensive during peak hours of consumption. Benefits should be given instead of cons to encourage the use of electric cars.

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