Current electric cars with significantly better climate balance as diesel and gasoline

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Current electric cars with significantly better climate balance as diesel and gasoline-electric

Up to 28 percent fewer greenhouse gas emissions as a lousy-class diesel, up to 42 percent less than a small car gasoline engine: If you buy a purely battery-powered electric car today and uses in Germany, when a useful life of an average of 13 years, significantly less CO2 and other climate-relevant gases Off than with a car with conventional internal combustion engine. This is the result of a study of the Fraunhofer ISI for the climate balance of electric cars.

Reason for the high savings potential for electric cars is according to the study “The current greenhouse gas emission balance of electric vehicles in Germany” (link to PDF) above all the advancing energy transition. The rising share of renewable energy at the current mix will lead to the fact that the emissions of climate-relevant gases in power generation in Germany is always further decreasing.

“This also improves the climate balance of electric cars. A potentially purchased electric car benefits over the entire useful life of falling greenhouse gas emissions in power generation. A conventional internal combustion engine, however, also encounters in 13. Year of use still a similar amount of climate-relevant gases as at the time of purchase.”- Martin Wiertschel, Head of the Energy Industry business area at the Fraunhofer ISI

Although the climate balance of conventional diesel and petrol engineers improve through the admixture of biofuels, but only slightly. It is also to be expected that the increasing use of unconventional oil deposits, for example by fracking, the greenhouse gas balance of internal combustion engines in return even worsening.

Four large levers for improving the climate balance of electric cars

In summary, it can be seen that a today-purchased electric car in Germany provides a relevant contribution to reducing the greenhouse gases over its usage time. Users and industry also have a series of options to be realized to increase the greenhouse gas balance of an electric vehicle even significantly. The study calls four large levers, with the help of the greenhouse gas balance of battery-powered electric cars further improvement:

  • The shop with self-generated solar power at home. Almost half of the owners of electric cars in Germany already have their own photovoltaic system, often with their own energy storage. Loading the electro car with self-generated solar power improves the climate balance of the electric car again. A proportion of 30 percent self-generated photovoltaic current in the battery can reduce greenhouse gas emissions of an electric car by an additional 8 to 11 percentage points.
  • The use of green electricity from additional renewable sources. Already today owners and owners of electric cars relate to their electricity above average often of green electricity providers. With a complete supply of regenerative electricity, it can be achieved that greenhouse gas emissions of its own electric car will be up to 65 to 75 percent lower than that of conventional cars.
  • The use of regenerative energies in battery production. Due to the high energy requirement in battery production, the production of an electric car today significantly more climate-relevant gases than conventional cars. By using regenerative energies in the manufacture of the batteries, these pre-chain emissions of electric cars can be reduced by 30 to 50 percent.
  • Intelligent load management. The loading of electric cars is shifted to a time at which current is particularly favorable, which is usually associated with a high proportion of regenerative power generation. Simulation calculation of the study show that the greenhouse gas balance of electric cars can be reduced by 4 to 6 percentage points again.

The study authors is important to mention at the end of their paper that the climate balance of an electric car depends on a series of influencing factors. The most important are the emissions of power generation, the emissions in vehicle production, which are essentially determined by the battery size and energy use in the production, the entire mileage of the vehicle, the life of the battery and the energy consumption of the vehicle, the U.a. from the vehicle weight, the individual driving style and the climatic conditions is determined. That is, the individual greenhouse gas balance of an electric car can be very different.

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