2 ms·
> I remember having a heated discussion with someone about this at work, and it came down to where you were charging that Tesla This sounds like a faulty analy
by mlyle 5y ago
> I remember having a heated discussion with someone about this at work, and it came down to where you were charging that Tesla
This sounds like a faulty analysis.
Generally even if 100% of your electricity is something moderately bad, like natural gas, end-to-end power use is better than an ICE with gasoline.
Figure an electric car is 150 watt-hours per mile, and charging is 94% efficient (pessimistic, but makes the numbers round). Natural gas is 0.4 kilograms/(KWhr), so about 65 grams of CO2 emitted for that mile. Compare to 8.5 kilograms of CO2 emitted from burning a gallon of gas, so you'd need to get 130 miles to the gallon to be equivalent.
Considering lifecycle costs makes things closer, but not super close.
> and if you had rooftop solar
Most people charge at night, so your own rooftop doesn't help. (Also, most places the renewable mix is worse at night, but not in all: in some places wind and hydroelectric "win").
> And at the end of the day, moving around a 5000# Tesla or 6500# F150 Lightning takes a lot more power in any form than a 3400# Civic / Camry.
More mass means slightly more tire friction and means more kinetic energy-- a big fraction of which you get back in regen.