I'm getting some pushback on Tesla, people saying "well.... where is that energy coming from when you plug it in to charge it that energy has to come from somewhere", you know the usual you've probably heard it a million times. Its not good enough to say to the FUDsters that it only uses 1/3 of the energy that gasoline uses. So I set out to do the calculations and have them handy when it comes up in a conversation. (1/3 was the figure given by by Tesla back 2006).
Given:
115000 BTU per gallon of gasoline = 33.7 Kwh per gallon
Model Y long range gets 27 Kwh per 100 miles
Model Y long range has a 75 Kwh battery
Equivalent Gasoline car. Lexus RX350 and others get about 20 mpg
Calculation for 300 mile range:
gasoline Kwh over 300 miles
Kwh = 300 mi /20 mi per gal = 15 gal
15 gal at 33.7 Kwh = 505 Kwh
Model Y 27 Kwh per 100 miles
300 mile / 100 = 3
3 * 27Kwh per 100 miles = 81 Kwh
505 kWh for gasoline to 81 Khw for Tesla is about six times more energy.
I know there are a lot of other factors too, energy to get the gasoline, pump oil out of the ground, ship the oil, convert oil to gasoline. transport the gasoline. on and on.
Given:
115000 BTU per gallon of gasoline = 33.7 Kwh per gallon
Model Y long range gets 27 Kwh per 100 miles
Model Y long range has a 75 Kwh battery
Equivalent Gasoline car. Lexus RX350 and others get about 20 mpg
Calculation for 300 mile range:
gasoline Kwh over 300 miles
Kwh = 300 mi /20 mi per gal = 15 gal
15 gal at 33.7 Kwh = 505 Kwh
Model Y 27 Kwh per 100 miles
300 mile / 100 = 3
3 * 27Kwh per 100 miles = 81 Kwh
505 kWh for gasoline to 81 Khw for Tesla is about six times more energy.
I know there are a lot of other factors too, energy to get the gasoline, pump oil out of the ground, ship the oil, convert oil to gasoline. transport the gasoline. on and on.