Apparatus is provided having a heat extraction system for generating geothermal heat from within a drilled well, comprising: a heat conductive material injected into an area within a heat nest near a bottom of a drilled well between a heat exchanging element and rock, and any fluid around the rock, surrounding the heat nest to form a closed-loop solid state heat exchange to heat contents of a piping system flowing into and out of the heat exchanging element at an equilibrium temperature at which the rock surrounding the heat nest and generating the geothermal heat continually recoups the geothermal heat that the rock is conducting to the heat conductive material.