The solar roofing comes in four distinct styles that Tesla presented at the event, including “Textured Glass Tile,” “Slate Glass Tile,” “Tuscan Glass Tile, and “Smooth Glass Tile.” Each of these achieves a different aesthetic look, but all resembled fairly closely a current roofing material style. Each is also transparent to solar, but appears opaque when viewed from an angle. “The future is going to overwhelmingly be solar plus battery,” Musk said. “They go together like peanut butter and jelly.” Telsa will release more financial information about the SolarCity deal this week before it goes to shareholders for a vote. If all of Musk’s plans come true, by the end of next year you’ll be able to walk into a Tesla store, buy a Model 3 electric car, a slate-glass solar roof, and a Powerwall 2 to manage the flow of all those electrons in your life.