Hello Brian,

Lets round everything out to the worst case:

If your electricity cost is $0.08/kwh which is the same cost I have too, and

lets say your EV uses 1kwh per mile, than for the 28 miles this would be 28

x $0.08 = $2.24 for electricity as compare to $4.53 for gas.

My rig that is gear correctly for a very heavy loads that I might carry at

times which is up to about 20:1 overall gear ratio. One time I carry 1600

lbs of porcelain floor tiles which the made the EV weigh about 8600 lbs, I

was running at about .5Kw/mi at 25 mph. At 6800 lbs in third gear at 50

mph it uses about .55Kw/mi at 50 mph.

So at about .5kw/mi the cost of electricity would be about $1.12. Now for

you lite weight rig, it could even be half of that again or about $0.55 for

28 miles.

If gasoline is $3.30 a gallon, then ($3.30/$0.55)x 28 = 168 mpg in cost

comparison.

I do not take the cost of the batteries, why, because for me, it like taking

the cost of replacement engines which I have done every five years and

calculation that in with the mpg.

I can get 10 to 12 years out of my batteries and even did not have to

replacement them, but I wanted something new or different.

Roland

----- Original Message -----

From: <

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To: "Electric Vehicle Discussion List" <

[email protected]>

Sent: Thursday, August 09, 2007 6:54 AM

Subject: [EVDL] computing costs

> I hate to ask a question like this, as I think I have seen it discussed

> before, or at least similar discussions, but I am at work, and am limited

> to what I can look at over the internet. Read, I can't search the

> archives.

>

> So the story goes.

>

> I was talking to my wife last night about my car. It has been in the

> works for a long time, and I have a real use for it soon. Most of the

> time, I am riding in a vanpool to work, so I don't need a car. But I am

> going back to finish my masters degree, and it is a 28 mile round trip.

> We currently have one car, a minivan which gets around 17-18 mpg. It

> would be nice to not have to take the van to school everyday. She was

> asking would we save on gas money if I got my electric car running. I

> think so, but because I don't know how much power it takes to get there

> and back I couldn't answer completely. This is what I was thinking:

>

> Cost of the gas car:

> miles / mpg = gallons; gallons * price per gallon = cost to travel

> (28 / 17) * 2.75 ~ $4.53 for the round trip

>

> I assume that the cost of the electric car would be similar, but is there

> a way to estimate the usage? The car is a 1974 VW bug, and I want to run

> it at 144V, curtis 1231C, and am guessing the pack size will need to be at

> least 80 Ah. I was considering SLA, but might do flooded. Electricity in

> our area is about $0.08/kwh. The distance includes ~8 miles of highway,

> ~6 miles city with up hills, on the way there. Just reverse the process

> for home, ~6 miles of city and downhill, and ~8 miles of highway home.

>

> Cost of the electric car:

> miles / mpkwh = kwh; kwh * price per kwh = cost to travel

> (28 / ???) * 0.08 ~ ?????????

>

> Is this correct way to compare costs? Am I missing information to make an

> informed guess? I appreciate all comments.

>

> Thanks,

> Brian

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