I have had my Model S about 2 1/2 weeks now. I upgraded from a Nissan Leaf. My lease was up so this seemed a good time to upgrade. When I got the Leaf instead of installing a fancy charging station from Evgo I just added a 220V plug in the garage and sent my cable to evseupgrade in California to be modified so I could charge by just plugging it into the outlet. When I bought my Tesla I was told that I could use what I had and an adapter would allow me to charge. Not so. The adapter goes on the plug at the car not the wall and there is no Tesla adapter that allows the cable to plug directly into the wall outlet. The Tesla approved electrician this morning recommended a service upgrade at a cost of $3500-$4000. I'm checking out some alternatives. Has anyone run into this kind of problem?