The best-known of these tools is probably the hand-held window squeegee, used to remove the cleaning fluid or water from a glass surface. A soapy solution acts as a lubricant and breaks up the dirt, then the squeegee is used to draw the now water-borne dirt off the glass leaving a perfectly clean surface.
Another way of estimating the cost of electricity would be the cost of an ordinary solar system, or $21,000 as shown in the example above. So the cost of a Tesla retrofit system would be in the range of $33,000 to $37,500.
The 2017 Tesla Model S starts at $68,000 â thatâs with the standard 60 kWh battery pack. Higher trims come with larger batteries. Other models include the Model S 75 ($74,500), Model S 90 ($89,500), Model S 100D ($92,500), and the high-performance Model S P100D ($134,500).