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

Eugen Leitl eugen at leitl.org
Tue May 17 07:01:25 UTC 2011


On Mon, May 16, 2011 at 11:19:37PM -0600, Kelly Anderson wrote:

> Ok Keith, I see where I went off the tracks now. You're talking about
> ENERGY payback time, and at the time I was thinking about monetary

EROEI is always preferable to EPBT. You can have short EPBT at
negligible EROEI, e.g. if you use polymer PV which burns out
in a couple years.

> payback time, which is completely different. My apologies for the
> misunderstanding.

-- 
Eugen* Leitl <a href="http://leitl.org">leitl</a> http://leitl.org
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