[ExI] Small scale solar payback time (was Re: Planetary defense)

Eugen Leitl eugen at leitl.org
Fri May 13 06:51:40 UTC 2011


On Thu, May 12, 2011 at 04:29:08PM -0600, Kelly Anderson wrote:
> On Thu, May 12, 2011 at 9:49 AM, Keith Henson <hkeithhenson at gmail.com> wrote:
> > Ground solar currently has an energy payback time of 2-4 years.
> 
> Where does this come from? It is certainly not the case for small scale solar.

Keith refuses to acknowledge modern realities. Terrestrial thin-film 
EROEIs under a year (several months he cited for SPS, which do not 
yet exist). Nanosolar claims less than a month, but I find that not
believable, not without official data.



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