Hello Paul, nice to hear from you again.(PhD in Geophysics) WOW Thats impressive as a green person I am interested in geothermal heating and cooling. I suggest to the people that I talk to on the ham rig that they check into geothermal if they live in an area that
has neither wind or solar. One man in Michigan has geothermal his heating cost dropped by 70% now that is a mean green earth machine.. :O)