I know this may have been discussed in the past re: a metering device that could track electrical consumption for charging the vehicle. Kill-A-Watt makes a device for 110 Volt applications but no one I've researched has a heavy duty 40A 220V type meter. So, perhaps coming at this backwards may help. Are there any equivalents people have found? A 220V clothes dryer/ air conditioner or electric baseboard heater that uses same/similar consumption. Or is using a 1,500-1,750 watt heat gun (similar to blowdryer) drawing current similar to Tesla charging? If we can find the equivalent in a high power 110V device, perhaps then using a Kill-A-Watt, we can determine exactly rather than approximately. Or have people used a separate utility meter for the 220V car charger? I'm in NY/NJ, so our rates vary around the .14-.16 cent/KwH price range. It would be nice to know truly what I am using. At the same time as car purchase, I've invested in LED lightbulbs in many places in the house so I have the conservation savings on one side and greater Tesla power use on the other.