A little hidden Tuscan excellence geothermal energy is the fundamental pillar of the economy of a vast area between the provinces of Grosseto, Siena and Pisa. In these places where still puffs of steam constantly come out of the subsoil in certain natural areas, in this typical Tuscan countryside dotted with cooling towers from which steam escapes uninterruptedly and crossed by aerial pipes, geothermal energy has been a resource since 1818, first for extraction. of boric acid, then from 1904 for the production of electric current. The steam as such offers heat and hot water at ridiculously low prices to entire communities that have chosen district heating, generates a lowering of costs in food production rooted in the territory, and regulates others. However, geothermal energy is a resource that needs government incentives to support the development of the local economy and in times of clean energy it has been suspended.