Yeah, I meant photovoltaic with PV. At least in Europe it’s gotten really cheap. There are mutiple ways to use the energy that is stored in electric cards. There’s “Vehicle to Load” (V2L) for plugging appliances directly into the car, “Vehicle to Home” (V2H) for connecting your home to the car and “Vehicle to grid” for connecting the car to the power grid and selling the stored energy. “Vehicle to load” is also useful when going camping or when you need power when there’s no outlet near you. You just need a car that supports it and a small adapter.