The least expensive way is to charge at home. 

• The quickest solution is to use your dryer plug, and split it with the SplitVolt (1).  This allows you to use your dryer in one of the two plugs on the Split Volt and charge your EV in the other.  The SplitVolt has the circuitry to make sure you are not using the dryer at the same time.  If you are not using the dryer plug for a dryer, use the dryer outlet on the SplitVolt for a second Tesla.
  

• The SplitVolt gives you a readout of how many kilowatts you are using and if you know when you are drying and when you are charging, you can calculate the cost of each.  (The original outlet gives no reading of how much electricity you were using for the dryer.)  Since you can set your Tesla internally to charge any time; set it to charge at the lowest rate time, plug it in each night, and forget it.

• If your dryer plug is in your garage, you will probably need an extension cord (2) to reach your Tesla's mobile connector.  (If your dryer is in a room next to the garage, as mine was, have the plug moved through to the garage side of the wall.)
  

• The solution becomes:  Plug in the SplitVolt (1) to the dryer plug; plug in the extension cord (2) to the SplitVolt, plug in the mobile connector that comes with the Tesla (3) with a 10-30 adapter (4) to the extension cord, and you are in business!  If you do not use your dryer plug for a dryer, you can use that second plug for a second Tesla, as I do.

I have used this setup for over a year with my 2020 Tesla Model 3.

These items are what you need to charge one or two Teslas using a dryer plug:

            (1) Split Volt    $250 (I have one for sale.)

             (2) 10 ft. and a 15 ft. Dryer Extension Cord    $60 each
                    (I have both for sale.)

             (3)  Mobile Connector that comes with the Tesla w/20 ft. cord  ($0)

                       


                (4)  Gen 2 NEMA 10-30 adapter to increase the mobile connector from 110 v. to 240 v.

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