So let’s talk Vehicle-to-Grid or V2G! First of all, renewable energy sources like solar and wind. However they only generate electricity when the wind blows or the sun is out. Sometimes that isn’t always. And always is especially when customers need power. Batteries large enough to hold megawatts of electricity are prohibitively expensive but another potential source of battery storage is fast emerging: electric vehicles.
Vehicle-to-grid (V2G) storage allows the smart grid to use EVs as a distributed network of batteries. So that you can store power at off-peak times. As well as help power the grid when demand peaks. Here’s how it works:
Power is generated from a renewable source. All from like wind, and also transferred to the grid. So not your renewable energy source is the batteries in this case in your car! So vehicle to grid aka V2G!
Electricity flows from the grid to EV batteries. Especially when there also is excess capacity (e.g. when the wind blows in predawn hours). So the power flow is reversed when demand on the grid is higher.
In conclusion, Customers can also control when the smart grid can access battery power from their EVs.