Went to the Tesla demo today re solar panels, they don't have the solar roof available anywhere yet. Each panel makes 305kw in laboratory conditions. They work better in cooler weather rather than hot(100F). Every installation is web enabled allowing you and Tesla to check the output of each panel. They guarantee a minimum 10% saving over what you are paying now, but in some cases it doesn't make sense to install solar. Units are warranted for 20 years, however the inverters, which are covered by the warranty, will need to be replaced in 10-12 years at their cost.
They suggest installing two power wall units each one providing about 13kwh of power. The units cost about $7500 each.
The cars were very nice, I liked the model S, didn't like the X, found the 3 to be on the small size and with no dash at all just the screen to the right.
If I was buying one I would opt for the S.
Oh, and I got a nice Tesla pen.
Edited by LJ, 11 December 2018 - 07:57 PM.