[wojcech]

Interesting points, thank you. EEVblog agrees with some of them and did the numbers on others, I might link it if I remember(it's bed time here soon)

One thing where I don't agree:roofs being an unemotional decision. Everything is influenced by emotions. All Solarcity has to do isb make it at least feasible for everyone price wise, then having the combination of the (apparently very fancy) French something style+the feeling you are a part of the solution for the planet+the tesla allure will do the rest for a suitable percentage of the market. That is iff the numbers work out enough to not make it an unreasonable choice.

The iphone would have failed at 1500 say. But 500 was barely cheap enough for what people got and felt they got to be worth it.

[prefect42]

I'll second that from personal experience, roofs are definitely an emotional decision. They can look great, be artsy, and even cover your house in the most visible of manners.