or just panels, windows, and paint, but every exterior piece should be solar-roof, walls, doors, windows. everything should come with dozens of contact points so and 2 points touching adds it to the home grid. Your some can self assemble the solar grid in the home, store what it doesn’t use and sell the rest to the grid, The house your cars and your phone/smart device arranges optimal time for charging thr car. Houses shouldnt need wires either, as we will develop a while home wireless da/and power standard which solves the need to wire all but the thirstiest appliances ,.