Over the span of three years, Google's philanthropic arm, Google.org, supported a project run by the SMU Geothermal Institute intended to map out the potential for geothermal energy use in the United States. Below is the result of their research.
This map incorporates tens of thousands of new data points measuring the potential of Enhanced Geothermal Systems, and is the most comprehensive map of such data to date. There is a wealth of untapped geothermal energy in the nation's ground, just waiting to power our houses!
Read more about the results of the study (and Enhanced Geothermal Systems) here, and see some 3D models of Enhanced Geothermal Systems here.