[RE-wrenches] Energy usage for an electric car

[Ray Walters]

We did a charging station for a Chevy Volt earlier this year.  We 
actually ran the charger for about a week to come up with the design, 
based on their mileage ,etc. This also accounted for battery and 
inverter losses.  We added about a 3400 w array (off grid) and they 
drove about 40 miles round trip/ day.  We went with the 120 vac slower 
charger to keep a slower and more efficient discharge rate of the main 
system battery.  I believe that charging at slower rates is almost 
always going to be more efficient due to Puekert's exponent.

R.Ray Walters
CTO, Solarray, Inc
Nabcep Certified PV Installer,
Licensed Master Electrician
Solar Design Engineer
303 505-8760

On 9/27/2013 2:20 PM, William Miller wrote:
>
> Friends:
>
> Have any of you researched the energy usage for an electric car? The 
> car in question is a Tesla Sedan.
>
> Thanks in advance.
>
> William
>
>
>
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