[thackney]

To be effective Geothermal fluid temperature should be at least 300º F, although plants are operating on fluid temperatures as low as 210º F. This is not available everywhere in the US. We could do more, but it is going to remain a small portion of our need.

More info at:

Geothermal Basics
http://www1.eere.energy.gov/geothermal/geothermal_basics.html

Many of the cooler area are suitable for home size geothermal unit for some heating.

[Red Badger]

The water out of my lawn pump comes out of the ground at around 68°F year round. It feels cold in the summer and warm in the winter. A simple heat pump or “swamp cooler” would work in Florida and other places not near magma vents.
Here’s one company’s solution:

http://www.groundloop.com/

[HamiltonJay]

Yea, and go and try to tap the GEOTHERMAL out west near the liberal centers.. where its most viable.. let alone say around something like YELLOWSTONE.

Enviroweenies will make sure that its so damned costly that it won’t pay off.