Hi,
I've been doing some calculations on what my "fuel costs" (as measured by my home's utility meter) are going to be for Model S using Tesla's own estimate of 300 Wh/mile when it occurred to me that there would have to be losses associated with the charger, battery and so forth. In addition, there must be some sort of "standby draw" when the car is plugged in, but fully charged, and also when pre-conditioning the car for heat or cool before heading out.
This would mean I would have to supply more kWhs through my utility meter than the car is actually delivering on the road, and my all-in electricity costs for having the car will likely be higher than 300 Wh per mile of use.
I'm wondering if any current EV owners have actually separately-metered their EV power source (I intend to when I wire up my 14-50 outlet in the garage) and have an idea of what their actual all-in electricity use looks like.
I suspect that Tesla's 300 Wh/mile may be a little light to begin with. Our current Chevy Volt is averaging about 330 Wh/mile when in electric mode, according to OnStar.
The savings over gasoline looks stupendous even if I assume 350 Wh/mile, but I worry that I might be missing electricity use associated with having the car for these other, perhaps unaccounted for, factors.
Mike
I've been doing some calculations on what my "fuel costs" (as measured by my home's utility meter) are going to be for Model S using Tesla's own estimate of 300 Wh/mile when it occurred to me that there would have to be losses associated with the charger, battery and so forth. In addition, there must be some sort of "standby draw" when the car is plugged in, but fully charged, and also when pre-conditioning the car for heat or cool before heading out.
This would mean I would have to supply more kWhs through my utility meter than the car is actually delivering on the road, and my all-in electricity costs for having the car will likely be higher than 300 Wh per mile of use.
I'm wondering if any current EV owners have actually separately-metered their EV power source (I intend to when I wire up my 14-50 outlet in the garage) and have an idea of what their actual all-in electricity use looks like.
I suspect that Tesla's 300 Wh/mile may be a little light to begin with. Our current Chevy Volt is averaging about 330 Wh/mile when in electric mode, according to OnStar.
The savings over gasoline looks stupendous even if I assume 350 Wh/mile, but I worry that I might be missing electricity use associated with having the car for these other, perhaps unaccounted for, factors.
Mike