There are now two types of Tesla Solar Roof panels available for pre-order: smooth or textured glass tiles (both made from durable tempered glass). In the next six or so months, the other two proposed varieties, Tuscan and French Slate, should also become available for purchase. US deliveries are expected this year, and UK next. Though, the Tesla site says the panels will be available to just about every country. Pricing stands at $21.85 per square foot of solar panels. As The Verge notes, it would cost $50,000 to install a solar roof on a 2,000-square-foot home. Tesla’s free Solar Roof Calculator can analyze one’s cost and savings.