sci.energy

fragma wrote:

> THE point is that the energy (carbon-based) involved to produce a PV
> is more than the panel will ever deliver back until it dies.
>
> Basically independent of present price if you will...
>
> Please think about the complex and energy expensive production methods
> (refinery systems)

[ Extending discussion to news: ]

Ok. I'm _still_ thinking about that - and about questions that
your posting raises:

(1) Has anyone produced any verifiable numbers for the amount of
energy required to produce a PV cell - and if so, where can the
numbers be seen?

(2) How much of that production energy is _heat_, and at what
temperatures?

Because of my thermal solar focus, I'm inclined to consider the
possibilities of reducing the carbon-based energy content of PV
cells by substituting solar heat for electrical (resistance)
heat.

(3) Might we now - or at some point in the future - develop a
solar-based production technology that could produce a more
favorable energy equation?

--
Morris Dovey
DeSoto Solar
DeSoto, Iowa USA
/DeSoto