This is the energy storage system shown with a Tesla model S. There are 3 Tesla Powerwalls per unit, enough energy for 2 to 3 days use, and they are they are continuously recharged by the Solar array on the roof, so no power has yet required from the grid after 4 months of occupancy by two of the units. The garage is wired for EV charging AND for V2B "bi-directional" charging, where the vehicles will be able to power the building!