[SustainableTompkins] EROI and investment

[Joel and Sarah Gagnon]

Very interesting. I noted especially the observation that for energy 
extractions that have a marginal return from an energy perspective, the 
same is true from a financial perspective -- that even when energy prices 
rise, these sources of energy will remain expensive. Also noteworthy was 
the observation that the harder we try (as in poking more holes  in a 
search for oil), the lower the resultant return on energy invested for what 
is eventually extracted.

All in all, a very sobering assessment. Thanks for sharing the link.

Joel

At 08:57 AM 1/5/08 -0500, you wrote:
>People who were interested in last year's discussion of EROI
>(energy returned on energy invested) may find this analysis
>illuminating:
>
>     http://www.theoildrum.com/node/3412#more
>
>The diagrams toward the end illustrate graphically what TCLocal
>folks have been trying to say about the effect of declining EROI
>on "discretionary consumption."
>
>Jon
>
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