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.
Both Tesla and Solar City closed down on Monday: Tesla at $250 per share and Solar City at $61. On a more upbeat note, Musk is also CEO of the private space company SpaceX, which had a successful rocket blastoff over this past weekend and has begun building its own launch facility in Texas.