Heat is a form of energy and geothermal energy is, literally, the heat contained within the Earth that generates geological phenomena on a planetary scale. ‘Geothermal energy’ is often used nowadays, however, to indicate that part of the Earth’s heat that can, or could, be recovered and exploited by man, and it is in this sense that we will use the term from now on…Learn more>>

 Geothermal hot spring  photo credit- Patrick Laney, nrel 13107


The presence of volcanoes, hot springs, and other thermal phenomena must have led our ancestors to surmise that parts of the interior of the Earth were hot. However, it was not until a period between the sixteenth and seventeenth century, when the first mines were excavated to a few hundred metres below ground level, that man deduced, from simple physical sensations, that the Earth’s temperature increased with depth…Read more>>

GEO HISTORY earths crust      The first measurements by thermometer were probably performed in 1740 by De Gensanne, in a mine near Belfort, in France (Buffon, 1778). By 1870, modern scientific methods were being used to study the thermal regime of the Earth (Bullard, 1965), but it was not until the twentieth century, and the discovery of the role played by radiogenic heat, that we could fully comprehend such phenomena as heat balance and the Earth’s thermal history…Read more>  

GEO HISTORY Capped lagoon         GEO HISTORY Larderello 1904


History Of Geothermal Energy

The first industrial use of geothermal energy began near Pisa, Italy in late 18th century. Steam coming from natural vents (and from drilled holes) was used to extract boric acid from the hot pools that are now known as the Larderello fields.

In 1904, Italian scientist Piero Ginori Conti invented the first geothermal electric power plant in which steam was used to generate the power. With the above experiment, the first geothermal plant in USA started in…Read more>>


A History of Geothermal Energy in America

Archaeological evidence shows that the first human use of geothermal resources in North America occurred more than 10,000 years ago with the settlement of Paleo-Indians at hot springs. The springs served as a source of warmth and cleansing, their minerals as a source of healing. While people still soak in shallow pools heated by the earth, engineers are developing technologies that will allow us to…Read more>>


Geothermal Energy Timeline