In PG&E territory, an old Prius maybe gets 40mpg, and gas costs $4.90/gallon, giving $0.123/mi. The current Model 3 seems to use about 25kWh/100mi. The off-pe

In PG&E territory, an old Prius maybe gets 40mpg, and gas costs $4.90/gallon, giving $0.123/mi. The current Model 3 seems to use about 25kWh/100mi. The off-peak rate (PG&E EV2-A) is 31c/kWh, giving $0.078/mi. Tesla is winning, but not by a ton. Supercharging seems to be a bit more expensive than home charging. Gasoline is less expensive outside California. Electricity is much less expensive outside of the investor-owned utility territories. Heck, Palo Alto (not exactly a low cost area) only charges $0.21c/kWh.