EGS works because it's very hot underneath the Earth and by drilling a well into it, you can extract heat to create electricity. To do that, you have to drill 2 or more wells and fracture the rock down there to connect the wells. Once the wells are connected, cold water is sent down one well and hot water is brought up from the other one.
To demonstrate this process, we created 3 SketchUp models that show the world's first commercial EGS system in the Cooper Basin in Australia. The models not only show the power plant and drill rigs above ground but also go underground to show the drill holes and, most interestingly, the fracture cloud that connects the two wells. You can view the models in the collection on the 3D Warehouse.
David Bercovich, Program Manager, Google.org
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