Tesla releases details of its solar roof tiles:

Tesla released today all the information to order its new solar roof tiles products – starting with the smooth black glass tiles and the textured glass tiles, as reported earlier today. Of course, the most important information that people were waiting for is price. Elon Musk said that Tesla’s solar roof could cost less than a regular roof, even before energy production.
Tesla pretty much delivered on both depending on how you look at it. The company says that the “typical homeowner can expect to pay $21.85 per square foot for a Solar Roof.”
What is important to understand is that not all tiles on the roof would be solar tiles. It depends on the energy needs of the household and shading coming from structural items such as dormers. For the house pictured above, all the tiles are from Tesla, but only some of them have solar cells in them that can generate electricity – though it’s not visible from street view.
The $21.85 per square foot price point was calculated for a roof where 35 percent of the tiles are solar (solar tiles cost more per square foot than non-solar tiles). During a conference call with journalists today, Musk said that in some cases, depending on the roofs, customers will be able to have up to 70% solar tiles, but in most cases, it will be about 40%.
Ultimately, Tesla sees that most customers will essentially be paid to have a new roof, when accounting for energy generation and the solar incentive.