Tuesday, September 22, 2009

Term of the day: EROEI

Energy Return On Energy Invested

1859
1 unit of energy invested returns 1,000,000 units of energy (wells were shallow and were gushers)

1950
1 unit of energy invested returns 100 units of energy

2010
1 unit of energy invested returns 15 units of energy

Clearly, when 1 unit of energy must be invested to return 1 unit of energy, it no longer makes sense to try to extract the energy.

Unfortunately, we may run into problems even sooner: when 1 unit of energy invested returns only 8 units of energy. We are almost there.


So it is not a matter of whether or not the oil exists, but rather whether it can be extracted and delivered for a reasonable price.

Rush says "There is 700 years of oil in the ground! There is no oil problem!"
Ayn Rand said, one can evade reality, but one cannot evade the consequences of evading reality.
I would say, "Everything seems simple to the simpleminded".

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