Just saw the launch of the new Tesla car, and at a claimed 215m to a
charge, I can see myself perhaps being persuaded to consider the
technology at some stage in the not near or medium future.
I have seen quite a few charging points (or whatever they are called) -
in most large European cities. I assume that the cost of a charge is set
so that it would be marginally lower to run such cars compared to
But what would be a rough estimate for the true cost of a charge (i.e.
when done at home)?
Using figures here and assuming you have Economy 7 at around 6p for 7
hours and 12p in the day (remaining hours):
Do do a full recharge on a 32A single phase circuit (the usual if you
own an electric car and recharge it there - 13A is only really useful if
you are a remote site with no 32A option):
A full recharge is estimated to be about 11 hours at 7.3kW, so 7 at 6p
and 4 at 12p = £6.62
Or in terms of price/mile:
The same webpage suggests a charging rate of:
3.4 miles per kWh
So if using no more that 7 hours charging per night:
and if using day rate electricity:
For comparison, my diesel Touran at 50mpg costs around 9.6p per mile.
Either way it's a good deal, but does not factor the massive capital
cost of a Tesla!
Rather worryingly, a guy over the road had a relative with a Tesla staying
over the Christmas break. Apparently he says the problem his relative has
had thus far is one cell going down needing the whole battery to be replaced
under the warranty. I don't know what technology these batteries use, but
it does beg the question that could they fail and catch fire as laptop
batteries used to? Anyone know?
Obviously it is early days, and the people using these expensive vehicles
now are first adopters and pay dearly for that privilege.
The other issue is what about heating the car in the winter. Its fine if our
live in California, but not here or Scandinavia. this no doubt would push
the mileage down quite a lot.
This newsgroup posting comes to you directly from...
I have a friend with a Nissan Leaf - heating it does indeed make quite
an impact on the range. You can mitigate it a bit by having it preheat
while still connected to the mains (there is a remote control app for
your phone). His model seems a bit daft in that it uses an electrical
resistance heater to heat water, which is then circulated through a
conventional car style heating system. In fact it seems to pre heat the
water even during the summer when its not needed. Later models
apparently now include a heat pump style heater which takes less power.
Using water to move the heat about is ok, in that it presumably lets
them make use of a conventional heater matrix and ventilation system.
Heating the water resistively from battery is less good, and doing it
with a heater that you can't turn off even in summer seems daft.
That would be refreshing transparent by government standards...
They would certainly do something - look at diesel and LPG. But as you
cannot put markers on electrons, taxing the fuel does not seem to be one
of the options.
Only if we all started at once. What will really happen is it will take decades for everyone to take them up, and the substations will be gradually upgraded. And since the electric companies are making a lot more money, they can spend that on the transformers.
The most effective way to remember your wife's birthday is to forget it once.
ROFL. The RECS will be 'persuading' the government to force electric car
owners to have a smart meter and either charge them all the missing fuel
duty and car tax via their leccy bill, or simply tell the meter to
instruct the car to stop charging when a brownout situation occurs.
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