I have a MS on order and trying to come up with a charging solution. Having trouble getting an answer that I like from Tesla and my electrician. Here are the relevant facts: 1. My detached garage is >24 feet away from the closest edge of my house (so a 24' TWC on the house won't work). 2. I have a 100 Amp electrical panel 3. I have a crawl space, so electricity can be run under the house. 4. Between the edge of the house and the garage there is a deck, artificial turf and pavers. The electrician's idea was to run a new 240 line out to the garage. In addition, because I only have 100 Amps, he would put in a new sub-panel with an on/off switch to allow me to use either the TWC or my A/C, so as not to overload the circuit panel. He told me upgrading to 200 Amps would be quite costly because the wires are underground and then I would have to dig up the sidewalk/concrete, etc (an even if I did upgrade to 200 amps, I still have to get the power to the garage). The quote was $5,000 without the cost to replace the deck/turf/pavers, which I imagine will be another several thousand dollars. There is a reasonable chance that I move in the next year or two as well, so I don't want to drop a ton of money into something that I won't get a lot of use from. My suggestion (being a novice) was to put a 240 outlet on the back of my house and then use an extension cord to run to the garage (like this one: Amazon.com: Camco 55195 50 AMP 30' Extension Cord with PowerGrip Handle: Automotive The electrician thought that the city permit people wouldn't agree to let this install happen. I am trying to reach out to the city, but that is not an easy process. The Tesla charging person thought that this wasn't a great idea because a 50 Amp extension cord could potentially send more electricity to the car that I have left on the panel (the electrician calculated that I could use 15 amps to charge). He said that human error could create problems. My understanding is that I could manually set the car to charge at 15 amps overnight and then I wouldn't run into a problem. Any advice would be greatly appreciated.