A review of geothermal energy resources in Australia: Current status and prospects

Abstract: Australia has considerable hot rock geothermal energy potential. This results from the widespread occurrence of basement rocks (granites in particular) in which heat is generated by natural radioactive decay. There are extensive areas where temperatures are estimated to reach at least 200°C at around 5km depth. In Australia, there is also potential for lower temperature geothermal resources associated with naturally-circulating waters in aquifers deep in a number of sedimentary basins (Hot Sedimentary Aquifer Geothermal). These are potentially suitable for electricity generation and direct use. This paper will focus on the need to improve geothermal energy utilization in Australia, challenges facing it and the future benefits. This study shows, there is a significant potential for energy savings through greater use of geothermal energy in some regions of Australia. [Copyright &y& Elsevier]