[ausev] Residental Solar Power ROI

[gregmckay at aol.com]

I am not sure that I would want to subject an EV to use as a backup power source, although I bet it could be done.

We have been working towards a backup power solution,?and we are looking at two paths.? One involves our 2006 Prius which can act very nicely as a UPS.? The other would use transfer circuits and a cheap little Honda2000 generator.? Since we already have everyhting we need except for the transfer circuits, this is pretty low cost for us.? When th S-10E is up and running it will not be part of that backup power solution.

We could add to the PV systems some backup power capability, but that would be much more costly and require a lot of maintenance.

We also have 260w of PV on top of our Class B RV, so it (with 420ah of battery) can act as some backup power as well.


-----Original Message-----
From: Aaron Choate <achoate at gmail.com>
To: AustinEV News Announcements and General Discussion <ausev at austinev.org>
Sent: Thu, 7 Aug 2008 10:16 am
Subject: Re: [ausev] Residental Solar Power ROI



Have those of you with solar arrays who have EVs experimented with using your traction pack as backup power during grid outages?? One of my strongest interests in solar + EV is that I can be offsetting the power that my vehicle is using with what is being generated off of my roof.? Having the pack available for emergancy power would be very cool.? Just curious if anybody has been working to hack a solution together.

Cheers,

Aaron Choate


On Thu, Aug 7, 2008 at 10:07 AM, Thomas Burbridge <tthinc at yahoo.com> wrote:

Greetings,

I have long abandoned the ROI when it comes to RE.

When the grid power is out and you have light, your system is paid in full.

Cheers

> We have a 100w guerilla system that has been in place for
> over 6 years and a 2+KW system that has been in place for
> more than 3 years.
>
> The more you conserve the worse the payback equation
> looks.? We don't approach this from a standard ROI
> equation.? Even with that, I would be surprised that it
> would take 30 years to recoup a $9k investment.? I would
> also expect any quality panels to last longer than 25 years.
>
> We try to see if we can use under 500KWH each month.? We
> did not make it the last two months, but typically we do.
> We don't mind spending a little money up front to get
> monthly payments (in this case electric bills) that will be
> less than normal.
>
> ....and besides, it would set up any EV owner to be using
> their own electrons...
> (we have a 1997 S-10E waiting in the wings)
>
> Time of use metering is on its way, and we want to have a
> third system in place before that happens.
>
> -----Original Message-----
> From: Dustin <ullearn at gmail.com>
> To: ausev at austinev.org
> Sent: Wed, 6 Aug 2008 10:17 pm
> Subject: [ausev] Residental Solar Power
>
>
>
>
> Does anyone have experience with solar panels for home
> use??
>
> A couple weekends ago?the company solarcommunity.net was
> organizing neighborhood residents who may be interested in
> installing solar panels at home.? The business pitch is to
> get as many residents together to go in on purchasing to
> reduce the costs associated with installing a solar system.
>
>
>
> I did my initial research and found that the cost of a 3k
> kw solar system of $20-23k with a cost to me of $9k (using
> Austin Energy and Federal rebates)?would take about 20 years
> to pay back (with solar panels having a life of 25 years or
> so).? Ideally I could better invest my money in purchasing
> clean energy from Austin energy clean energy?directly, but I
> am still planning to attend a?meeting they are holding?to
> hear their pitch and wanted to see anyone else's
> experience or thoughts on installing solar panels.
>
> Thanks,
> Dustin
>
>
>
>
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