RedTesY
Member
A friend, who has a PhD in Electrical Engineering, calculated this "rule of thumb" for comparing the cost of electricity to the cost of gasoline. Multiply the cost per kilowatt hour by 10, and that is the comparable cost of a gallon of gasoline. So the average retail cost of electricity in WA state is $0.12/kilowatt hour, multiplied by 10, is $1.20 per gallon of gasoline. Charging from a public DCQC or Supercharger, the cost of electricity is $0.35 - $0.45 per kilowatt hour, or equivalent to $3.50 - $4.50 per gallon gasoline.