Raw silicon is certainly less expensive, but refined silicon is refined by,
ahem, burning a LOT of petrochemicals. Not quite as energy-intensive as
aluminum smelting, I'd guess, but nearly so. That's why the embedded energy of
PV panels nearly always outweighs their lifetime solar energy capture. Have to
put them in the right places (meaning Arizona or New Mexico or North Africa,
not your roof) to make that equation work out favorably. Unfortunately.
-Bill
> On May 24, 2014, at 19:49, "Lawrence Rhodes via EV" <ev@lists.evdl.org> wrote:
>
> I think the reasoning is silicon is cheaper than petrochemicals. I
> particularly like the idea of programmable and sensing roadways. Reminds me
> of the world of Minority Report. Lawrence Rhodes
>
>
> On Saturday, May 24, 2014 6:09 PM, Lee Hart <leeah...@earthlink.net> wrote:
>
>
>>
>>
>> Lawrence Rhodes via EV wrote:
>>
>>> This is a very good idea in my opinion.
>>> http://www.youtube.com/watch?v=Ep4L18zOEYI
>>
>> It's an interesting idea. But cost is going to be a *major* problem.
>>
>> I wonder why they just don't put the PV panels in the noise walls,
>> barriers, and other vertical constructions alongside the highways. They
>> don't have to carry road traffic, and are much easier to erect and
>> repair without closing traffic.
>>
>> --
>> A designer knows he has achieved perfection not when there is
>> nothing left to add, but when there is nothing left to take away.
>> -- Antoine de Saint Exupery
>> --
>> Lee Hart's EV projects are at http://www.sunrise-ev.com/LeesEVs.htm
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