On 11/16/2013 12:51 PM, Chris de Morsella wrote:
Dry rock geothermal certainly does have a big upside potential -- there is a whole lot of heat just a few miles below the ground, but it is not as easy or simple as you seem to think it is. For example in a lot of dry areas water supply becomes a gating factor that puts a limit on scalability -- this also applies to Canadian tar sands and shale gas plays -- water requirements will place a limit on how much it can scale; on the maximum annual rates of extraction that can be achieved.

Water use is also, or should be, a limiting factor on fracking for oil 


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