Resort owner makes electricity with water the temperature of a cup of coffee . American entrepreneur goes from diesel to geothermal , saving $ 350,000 K in 56 . Though Karl 's lower-temperature approach is new , for more than a century , people have been trying to generate electricity from the heat that sizzles from the center of the Earth -- using it to cook , bathe and for electricity . He invented portable geothermal generator that he says can power 210 homes . MIT : Most of Nevada can be transformed into a huge geothermal power zone .
Resort owner makes electricity with water the temperature of a cup of coffee . American entrepreneur goes from diesel to geothermal , saving $ 350,000 K in 56 . He invented portable geothermal generator that he says can power 210 homes . MIT : Most of Nevada can be transformed into a huge geothermal power zone .