the pictures explain the mechanism and each picture has a new aspect to consider the more it is thought about the more the reasons against using geothermal energy need to be brought to the fore as the first obstacle to implementing it points to weigh the water system is for temperature control and hot water in the new unnatural-death-designed-out habitation where there are no cars or planes or trains, electric generators are only needed for applications where there is no substitue for electricity indeed if there is a problem with the free electrons more innovative thinking may be called for to replace electricity's role absolutely no waste or pollution not only is geothermal energy environmentally friendly but also geothermal energy will, if we are on the right track, be environmentally enhancing which puts us in the intellectually pleasing position of being able to dwell on the though that we will be able to leave the planet in a better state than it was in when we inherited it there wont of course be unsightly pylons or power stations or those big propeller things to mar our view as currently envisaged the water and steam will be carried in pipes within each individual habitation