Geothermal energy is a Class renewables (green) and is heat that comes from inside the Earth (through underground rocks and fluids). It is obtained by steam and hot water catchment areas of volcanic and tectonic activity or heat underground. It can be used for heating (the dwelling domestic hot water), but also for the production of electricity. It is a clean energy, and people have used springs warm waters for thousands of years, with different purposes: for the bathroom as a source of cooking water, then in spas and, finally, to produce energy from them.Now, with the housing geothermal heat, plants are grown in greenhouses, dried crops, warm water fish in fish farms, industrial processes is performed.
There are three types of geothermal plants which are used to date the globe for geothermal electricity conversion efficiency of water: dry, flash, and binary cycle, thermal source fluid diferenţiindu¬se after state: vapor or liquid, or after temperature.
• Dried plants were the first types of plants built, they use steam from geothermal source.
• Flash plants are the most common plants today. They use water at a temperature of 182 ° C (364 ° F), injecting a high pressure in the equipment on the surface.
• binary cycle power plants differs from the first two in that water or steam of the geothermal source is not in contact with the turbine or generator. The water used to reach temperatures up to 200 ° C (400 ° F).
Pannonian depression, which in Romania includes western Banat and Apuseni Mountains is rich in geothermal reservoirs. Timis, Arad, Bihor and could benefit from this type of energy source. Timisoara existăun thermal spring water up to 80 ° C.
According to calculations made by the folks at ADETIM a new borehole costs between 2 and 3 million, but trials are more expensive to drill. Equipment for a city like Jimbolia, where Icelandic experts have already made a visit would cost over six million, and the most effective financial solutions for fundraising are by European programs.
In theory, Romania has a remarkable potential in geothermal energy chapter and is considered the third European country, after Greece and Italy, from this point of view. Basically, one city in the country, Beiuş rely totally on this type of energy for heating homes and major projects has become a center of ecological geothermal.
The advantages of geothermal systems
– saving achieved from any other classic energy system;
– Protection and economy limited natural resources (gas, coal, etc.);
– Environmental protection, because no fossil fuel, no toxic gases, smoke or ash;
– Do not use open flame and there is no danger of explosion;
– Are silent and do not require costly maintenance;
– Unlike other forms of renewable energy (solar, wind) can be used continuously, regardless of weather conditions.
Disadvantages of geothermal systems
– increased soil instability in the area, it can be caused by even mild earthquakes;
– Areas with geothermal activity cooled after decades of use, so we can not speak of an infinite source of energy.

Geothermal Plant
Geothermal Plant
Geothermal map in Romania
Geothermal map in Romania