This is caused by the squeegee being angled incorrectly forcing the water under the rubber blade out into the dry area of the glass or from solution being pushed up into the top edge of the window.
Although there is a slight difference between our original calculation and Teslaâs new oneâlast fall we built in a cost of $6,500, Teslaâs current cost for a Powerwall as part of a Solar Roof installation is $7,000.
No, Tesla's Solar Roof Will Not Cost the Same as a Traditional Roof. Even a simple calculation shows Tesla's solar roof will be many times more expensive than a normal roof. This article was updated on April 10, 2017, and originally published on Nov. 19, 2016.