Energy in South Australia and hotter than 150 °C can supply Australia’s total energy requirement for 26000 years. South Australia and Tasmania, where the granite basement rocks are suitable, are the main locations where geothermal energy is being developed in Australia. Sedimentary style geothermal resources have also been located near the south Victorian coastline stretching across South Australia. Geothermal energy has already been utilized commercially at two South Australian locations. Birdsville generates geothermal electricity from the hot water from the great artesian basin there, and a geothermal district heating scheme at Portland has been in use for the last twenty years, supplied by the
Net energy gain of gasoline, and the combustion of coal is converted from thermal to mechanical, and then to electrical energy. Examples of energy sources include: The term net energy gain can be used in slightly different ways: The usual definition of net energy gain compares the energy required to extract energy (that is, to find it, remove it from the ground, refine it, and ship it to the energy user) with the amount of energy produced and transmitted to a user from some (typically underground) energy resource. To better understand this, assume an economy has a certain amount of finite oil reserves