Show I II t I IR Rocks R Rocks Offer Em Sou Source e. e v rT po fi first rs t si c om com p s s-S s segment of or the geothermal resources re rc of or the nation has been Cn prepared by the US U.S. Geological Geological Geo- Geo log logical cal Survey The report reveals that huge quan quan- tines tines' tit s' s of or heat gist e in hot hotspots sp spots ts in the western states stales and andin in jn ink some ome parts part of the Gulf C Coast sl l trl The he e report shows enormous am amounts of natural heat are arc contained contained in rocks beneath the surface of or all 50 states tates but buton on only a small percentage of the he heat heSt t can presently be tapped More M re however tan Can an be he made available with increases in n value vale i of or the energy and with th th thu further development ofte of ol te technology According to the geo- geo th resources resource of or the nation which have been identified but for for- which recoverability costs vary from present levels to more than twice present levels arc are potentially capable of or producing pro about megawatt- megawatt centuries of electricity A megawatt-century megawatt is equal to 10 the production of one thousand thousand thou thou- sand kilowatts of or electricity continuously for years A production rate of one thousand thousand thou thou- sand megawatts is the approximate approximate mate need of a city of abo about t tone one million people and is the capacity of of a large modern nuclear or fueled fossil power plant or a Hoover Dam |