ABSTRACT
Succinctly, geothermal energy is heat from the Earth that can be harnessed and used for the benet of society. Geothermal energy is below us everywhere and is available all the time, unlike other forms of renewable or alternative energy, such as solar and wind. And, yet, in many ways geothermal is overlooked because people are not able to see it like sunshine or feel it like wind. Geothermal, unlike solar and wind energy, is a baseload energy resource capable of providing power 24 hours a day all year long, similar to traditional fossil-fuel-red power plants. This chapter provides a cursory overview of all forms of energy to provide a perspective of how geothermal energy ts into the energy milieu. Also, key concepts on energy and power are reviewed so the reader understands how energy and power are related and measured.
