There is a vast potential for power overload when using electricity in homes since residential power is very diverse. Thus, you must be cautious not to simultaneously turn on all your home devices.
For example, people have a 10kW shower for an hour that also uses a hair dryer, washing machine, electric oven, and other appliances. Such would change the plug-in electric vehicle, which can continuously consume up to 7kW of electricity for more than ten hours. The base load of electric vehicles, showers, and other electrical appliances of 10kW can seriously exceed the service and interrupt the current of 23kW (100 A).
Another concern is that the grid also depends on diversity. It means that users must avoid heating, cooking, and showering at the same time. Connecting two long-draining 7kW Electric Vehicle (EV) chargers might overload the power grid and local substations. Such an increase in power demand reaches a juncture when it is becoming more challenging to have the capacity to meet peak demand. With fewer coal-fired power plants and more intermittent renewable sources, grid operators need more tools to manage the power demand. Hence, energy management is the real motivation behind the move by governments to encourage the use of smart chargers for electric vehicles.
Moreover, a smart charger permits the energy stored in EV batteries to be used to meet spikes in grid demand. It is calculated that a traditional 22kW EV charging station takes around 6-7 hours to charge an EV battery. However, with a 50kW fast charger, the battery can be fully charged in less than an hour.
Since workplaces and homes are the most common locations where EV drivers connect their vehicles to charging stations, we know EVs are left connected longer than necessary. With smart charging, your automobile will stay connected and only charge when it is most efficient from a cost perspective and the grid.