Hybrid PV/Battery/Generator [RE-wrenches]

[Joel Davidson]

John, Don't be too quick to dismiss this concept. The guys at AC Propulsion
are pretty sharp. I wish my Prius' 17 kWh (38 each 7.2V, 6.5 amp-hour)
nickel metal hydride battery bank had the bi-directional connection AC
Propulsion is developing. Picture this. Your house has a PV roof feeding
into an inverter and your service panel with a TOU meter. You pull your EV
or hybrid into the driveway and plug it in. Grid or solar power charges the
vehicle battery bank if needed. If the grid needs power during peak
periods, the utility signals all the plugged in vehicles and draws from
their batteries. If the grid goes down, your vehicle battery bank powers
your home. Too far out? So were solar roofs a few decades ago. Imagine the
future and then make it so.

jberdner at sma-america.com wrote:

> Graham:
>
> Interesting idea but...
> Check out some of Tom Hund's (Sandia) work on this subject.
> As I recall, his conclusion was that the round trip cost for the energy
> was about $0.35 per kWh.
> Not quite enough to make it worthwhile even with time of day net
> metering.
> Perhaps the economics will be a bit better with the advanced batteries
> in EV's.
>
> Best Regards,
>
> John Berdner
>
> SMA America, Inc.
> 20830 Red Dog Road
> Grass Valley, CA  95945
> 530.273.4595 (voice)
> 530.274.7271 (fax)
>
> -----Original Message-----
> From: Graham Owen [mailto:graham at solarexpert.com]
> Sent: Thursday, June 13, 2002 11:07 AM
> To: RE-wrenches at topica.com
> Subject: RE: Hybrid PV/Battery/Generator [RE-wrenches]
>
> Check out this website http://www.acpropulsion.com
> They are developing electric cars that charge up at night with grid
> power, then sell the power back to the grid during peak demand.  From
> what I have been told, the founder Allan Cocconi, is a genious when it
> comes to inverter technology.  I know this dosn't help with solar
> projects in the works now, but there is some intersting stuff on the
> site.
>
> Graham
> GO Solar
>
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