PV Module Net Energy Question [RE-wrenches]

[jay peltz]

I know that Siemens did a great review panel energy costs.  I think it is a very
valid question but must be looked at with caution. Don't confuse energy cost
with payback.  Also you'll have to be looking at your area to determine how long
it will take your panels to produce the amount of power it took to make them
ie: if you live in AZ, it'll take less time than if you live in WA.

As I rememeber either the largest energy cost or one of them was the Aluminum in
the frame.  They also included the shipping box, junction box etc.

I've seen it but can't remember where.  Maybe Arthur Ruden (?) from siemens can
help on this.

jay

peltz power

Colin wrote:

> Dear Wrenches,
>
> Does anyone know of a website or any other source for current data on the
> energy payback for PV modules?
>
> I'd like to be a little better informed as to the various timelines I've
> heard about the length of time it takes for a PV module to produce more
> energy than it took to manufacture and transport.
>
> Obviously there must be a wide range of estimates on this, depending on the
> type of PV module (single, poly or amorphous), the manufacturer, and where
> it is eventually installed.  But I have always held to the belief that solar
> electricity does give you a net energy gain overall, something quite rare in
> the realm of what we human hands have made...
>
> I look forward to your responses.
>
> Thanks,
>
> Colin Mitchell
> Positive Energy
> Santa Fe, NM
>
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