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
London Underground cooling hot air. Conventional brakes on trains rely on friction to slow the train down, transforming kinetic energy into heat. More modern trains feature regenerative braking systems that can feed the energy from braking back into the power supply, minimising heat generation. This has the additional advantage of reducing the amount of brake dust produced by the trains. London Underground cooling In summer, temperatures on parts of the London Underground can become very uncomfortable due to its deep and poorly ventilated tube tunnels: temperatures as high as 47°C (116 °F) were reported in the 2006 European heat wave. Posters may be