Hot dry rock geothermal energy makes use of hot fluids found naturally in basement rock; but such HWR conditions are rare. By far the bulk of the world’s geothermal resource base (over 98%) is in the form of basement rock that is hot but dry—with no naturally available water. This means that HDR technology is applicable almost everywhere on earth (hence the claim that HDR geothermal energy is ubiquitous). Typically, the temperature in those vast regions of the accessible crystalline basement rock increases with depth. This geothermal gradient, which is the principal HDR resource variable, ranges from less than 20 °C/km to over 60 °C/km,
Notes from Underground after because of such an indulgence in society. The shame displayed here is what separates him from rational egoists and utopian dreamers, but the desire that he sometimes feels to buy into such ideals leaves him on the fringe of society or what can be understood as what drove him underground. The unreliable narrator is used in the entire story. Although the novel is written in first-person narrative, the "I" is never really discovered. The novel's style is also linked to the St. Petersburg Tales in which there is an unreliable narrator. The writing style is very dense and at