One area that needs research and may be a solution to reduce the high electricity consumption of homes is two-way charging and the extension integration of the electric car in the home network.
Increasing grid stability, reducing electricity costs and contributing to climate protection are key elements that can be achieved by integrating electric cars into the networks of the various providers, provided that this service is provided by electric cars and are side effects of the widespread use of electric propulsion.
The integration of the electric car in the home network could offer even greater advantages, if combined with a photovoltaic system. Excess photovoltaic electricity could be stored in the car and used later as needed. According to the calculations of panel manufacturers, just one square meter of solar panel can have an efficiency of close to 3KWh per day. If we calculate that a common solar panel has more square meters, then the energy gain is easily perceived.
The idea is so simple, but also so genius. The electric car battery can not only be charged through the wallbox in the house, but can also power the house as an independent storage medium. The battery of an electric car can provide a home with the energy it needs for about a week, as long as there are no major needs. If the owner has a photovoltaic system, the electric car serves as a temporary storage medium for home-generated electricity. Two-way charging at home, known as Vehicle to Home (V2H), can be profitable even without the availability of solar panels, as the owner of the electric car can recharge his batteries at night, when the price of KWh is lower, and feed it to the system when the price is increased at peak hours, earning the extra profit. And all this without having to give all the electricity, keeping much of it for his daily commutes. However, a positive in this case is that no loss of battery capacity beyond normal has been observed.
Two-way charging is mainly focused on cases where homeowners use their own photovoltaic system to take advantage of cost-optimized charging with home-generated electricity. The electric car stores the extra electricity from the photovoltaic system that is not used by home appliances.
It is noted that companies that will move to new and renovated offices in the coming years will have to find parking spaces with wiring for charging points for electric vehicles, according to a directive of the European Commission on the energy efficiency of buildings. The directive was announced a few days ago to help the EU achieve its long-term climate and energy goals. The EU’s vision is to achieve a building stock of zero emissions and fully carbonized by 2050.
All new public buildings should have zero emissions by 2027 and all new buildings in the EU should have zero emissions by 2030. In addition, these charging points should be “smart” to support electric vehicle charging when there is plenty of renewable energy.
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