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Old 10-08-2008, 07:06 PM   #29 (permalink)
Concrete
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Quote:
Originally Posted by jamesqf View Post
Yes and no. First, in most of the country the hole has to be pretty darned deep, and drilling costs money. Second, you only get so much heat per unit time out of a hole (or an existing geothermal resource such as a hot spring). It comes down to heat flow rates, and rock isn't a good conductor of heat.
...now we get to it
the biggest reason we do not have more solar or wind
- it is more expensive than burning carbon
in this part I'm with Dave - these clever energies are harder

wind is close & so is some biomass - the rest can't compete
yet...
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