The Meaning Of The Name Regina. Meaning of Regina: Late Latin name meaning âqueenâ. It was in use as a Christian name from early times, and was borne by a 2nd-century saint. In England it was used during the Middle Ages in honour of the Virgin Mary, and it was later revived in the 19th century.
The initial costs of geothermal energy are high -- wells can cost $1 to $4 million each to drill, and installation of a home geothermal pump system can run as much as $30,000 [sources: REPP, Consumer Energy Center ].
Despite the fact that geothermal energy is renewable and practically inexhaustible source of energy, world is still using very little of total geothermal energy potential, mostly because with currently available technologies only areas near the tectonic boundaries can be profitably exploited.