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.
In 3+ years of Tesla MS ownership we have charged our MS off our solar paneled roof, we have not paid an electric bill in over three years (all electric home) and our utility provider has paid us between $3,900 and $4,900/year for our excess solar production (net metering).