It is cheaper to run a car from electricity than
About 1.4 times cheaper with a gasoline price of
$2/gal and electricity cost of $0.15/kWh.
In other words, if you are paying $100 per month
for gasoline, you could reduce that cost to $71 per month by plugging your car
into the wall at night.
For those who doubt, here's the math:
This assumes 18% tank to wheel efficiency for the
gasoline vehicle, and 65% wall outlet to wheel efficiency for the electric
vehicle; assumed 115,000 Btu/gal of gasoline.
Gasoline ($2/gal) / (115,000 Btu/gal) * (3415
Btu/kWh) / (0.18) = $0.33/ kWh at wheel
Electric ($0.15/kWhr at wall) / (0.65) = $0.23/ kWh
Now, here's the challenge: an electric vehicle
doesn't have the range. In order to get decent range you need many heavy
lead acid batteries. If the vehicle is heavier, then it will require more
kWh's at the wheel. Then, the costs may even out.
I'm slowly making progress on my electric
vehicle. I have the rough frame put together and I took a test drive up
and down the street with a single 12V battery last month. I can't
wait to get it going on the full 60V pack so I can compare actual numbers.
I'll bring pictures at the next (April 24th) HREG