Geothermal Energy. Mankind has probably always used some type of geothermal energy for the entirety of its existence on the planet Earth. Finding a source of hot water at, or close to, ground level could mean an opportunity to cook, bathe, clean clothes and household items, and maybe just lie back and relax in its warmth. Today, geothermal energy can mean anything from this old and original use all the way to deep recovery of earth’s far higher temperatures. Or it can mean something just a few feet below the surface, where lukewarm temperatures can be amped up via the use of various chemicals and devices (heat pumps) which can absorb low-grade heat and deliver it at the needed higher temperatures. Some good sources of information on geothermal energy are www.thinkgeoenergy.com and www.energy.gov/eere/geothermal/history-geothermal-energy-america Also look at “Geothermal Energy is Poised for a Big Breakout”. www.vox.com . “Geothermal: Tapping Into the Million-year Energy Source Below Our Feet”. www.cleantechnica.com 7/5/22. “Everything You Need to Know About Geothermal Heat Pumps”. www.familyhandyman.com 1/3/23. “Supercritical Geothermal Could Power Everything”. www.power-technology.com 7/5/22. “Superhot Rock Energy”. www.catf.us . “Why Super Hot Rock?”. www.altarockenergy.com
