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Recharging the Grid with Electric Cars

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Posted by rpautrey2 on March 25, 2009, 2:27 pm
Recharging the Grid with Electric Cars

A utility in Delaware has opened the door to vehicle-to-grid

Wednesday, January 21, 2009
By Kevin Bullis

A utility in Delaware has taken a step toward a future in which
electric cars store renewable energy to help make its use more
widespread. The city of Newark has approved a system called vehicle-to-
grid (V2G), in which the battery pack in a car serves as a place to
temporarily store energy from the power grid.

A big problem with renewable sources of power like solar or wind is
that they only operate intermittently. For now, renewables provide
such a small part of the total electricity supply that other sources
can easily make up for the hours, minutes, or days when the wind isn't
blowing and the sun isn't shining. But if we're ever to rely on them
for a large part of our power, we'll need a cheap way to store the
energy that they produce for when it's needed most.

The vehicle-to-grid concept suggests a way to store energy cheaply,
since the batteries in electric cars have already been paid for. Most
of the time, a car is just sitting around doing nothing. For short-
term storage--needed to smooth out fluctuations in power from a wind
turbine, for example--a utility could quickly charge a car (or,
ideally, distribute a little charge to hundreds or thousands of cars)
when the wind is blowing and then take that electricity back a few
minutes later when the wind dies down. The more cars that are
available, the more energy can be stored. Longer-term storage might
also be possible: a car owner could charge up for a discount at night,
provided she agreed to keep the car plugged in at work to supply extra
power during peak power demand in the afternoon.

Of course, there would have to be some sort of agreement so that
energy companies couldn't take so much that the driver ends up
stranded, and they'd have to recharge a car before the evening
commute. But there are even bigger challenges. There simply aren't
many electric cars out there right now. Two-way hookups to the grid
would also need to be installed, and the grid may have to be upgraded
in other ways. And lastly, all the charging and discharging could
shorten the lifetime of the battery (not to mention void the warranty
from automakers).

There are probably more issues. But what do you think? Is V2G a good

Posted by Bob F on March 25, 2009, 4:36 pm
rpautrey2 wrote:

Is the utility going to pay for using up the battery life?

Posted by You on March 25, 2009, 6:00 pm

Did you catch our Prez's statement on 60 minutes last sunday where he
stated that "Electric Cars would be used to "Supply" power to the Grid?
I heard that and thought, "does this Yahoo even understand the
technology that he talks about?" This is NOT the stupidest Idea I have
ever heard, but it RANKS right up there with the worst of them. Do these
utilities REALLY Think they are going to use parked Electric CARS, to
keep their Grid Stable? If they do, then they are MOrooons... (Bug Bunny
Definition) the energy has to come from SOMEWHERE, and Electric Cars are
a USER of Energy not a Source of Energy.  The idea that you drive home
and park your ECar, Plug it in, expecting it to recharge overnight. Then
your neighbor decides to heat his swimming pool that night, with
electricity, but your Utility is running short, so your ECar is drained
to heat the neighbors pool, and when you go out the next morning it has
less Juice than when you parked it, and the Utility paid you $.10 for
the privilage of heating the neighbors pool...... What IDIOT thought up
this idea.... Must have got his Degree from The Dufus's R Us School of

Posted by Eeyore on March 25, 2009, 6:09 pm

You wrote:

Well then he's nuts.

I say only engineers should be allowed to run countries because it's one of
the few professions where failure is not an option.


Posted by rpautrey2 on March 25, 2009, 7:16 pm

About that imaginary engineering degree of yours?

Credentials Please?


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