Geothermal energy, almost unknown but with a great potential in Spain
Geothermia is probably one of the most unknown energy sources in Spain and many other countries. However, it could be one of the most efficient technologies of the future. In fact, it achieves consumption savings of up to 75% and its implementation is increasing little by little among the housing sector around the world.
Geothermia achieves consumption savings of up to 75%
Sweeden is the leader in the use of geothermia, but also another Nordic countries, Germany and France are the countries that most use this energy source. In Spain, there is no solid statistic about its application, but some sources consider that around 2,000 houses enjoy of geothermal energy.
More than 90% of the devices in Spain are installed in residential homes and 10% in flat buildings, mostly in cooperatives. In fact, the largest geothermal installation in Spain in the cooperative called EAI 310 in Madrid city.
The main barrier against its evolution is the high investment required for the initial installation, however the savings during the further years is very considerable: between 25.000 and 30.000 euros. The technical equipment requires practically no maintenance (the sensors have a lifespan of 100 years), nor it does emit smells or noises.
This energy source that takes advantage of the heat of the subsoil to climatize a house and heat the water. Geothermal energy is stored in the form of heat under the surface of the land, so it is a renewable source that can be exploited practically anywhere.
The concept of the technology is based in an exchange of temperature between the underground and the exterior, working like the function of the serpentine of a refrigerator. As the temperature underground remains constant (between 10 and 15 degrees in Spain) throughout the year, heat and cold exchange is available in all seasons of the year, in a stable way and whatever the weather conditions are.
Source: ElPais.com/ Asociación de Empresas de Energías Renovables (APPA)