There's a very useful and up-to-date writeup of the four main types of geothermal projects, and the latest (AGS) that features 1) no injection wells or other fl

There's a very useful and up-to-date writeup of the four main types of geothermal projects, and the latest (AGS) that features 1) no injection wells or other fluid contact down-hole, 2) re-using existing oilfield wells when possible, 3) no need for "hot rock" steam flashing, and 4) no parasitic energy use for pumping (thermosiphon). Well worth the read. The author, Dave Roberts, is a reliable read in the energy world and has recently launched a Substack dedicated to energy. [1] https://www.vox.com/energy-and-environment/2020/10/21/21515461/renewable-energy-geothermal-egs-ags-supercritical https://www.vox.com/energy-and-environment/2020/10/21/215154...