The working of Geothermal EnergyGeothermal energy is the heat from earth; actually it is heat from a deep layer of our planet. The deep earth layer that contains the magma, which is a molten rock, is extremely hot. This heat is a great renewable source of energy.
The distance to reach the magma layer differs from place to place so the cost of reaching the geothermal source of energy depends mostly on how "fat" the crust layer until it is possible to reach the magma layer.
Areas that earth plates are interfacing each other will be good spots to collect the heat. These plates "borders" enable the magma to burst to higher layer of earth, we also know these areas as volcanic areas and potential earthquake areas, so the heat energy can be captured in a higher layer.
The most common way to use the geothermal energy and turn it into electricity is by heating water and turning them into steams with the heat released from the magma. After the steam is available its pressure is being used to operate a dynamo that produces electricity.
The great advantage of using geothermal energy is that it has the potential of supplying a continuous resource of clean and sustainable energy. With progressive improvements of technologies, the costs for electricity from geothermal systems and facilities are in decrease. There are so many reasons to use renewable energy resources in general and geothermal energy in particular so the fact that the electricity production costs of geothermal energy are in decline, are encouraging and it seems that it will be used much more in the near future.
Geothermal power plants provide what is known as base load power i.e., they produce power at a constant rate, just like coal-fired, natural gas, hydroelectricity or nuclear power plants. Wind and solar energy are generally considered intermittent power sources.. Geothermal resources are not available everywhere, at least not for power plants. Home geothermal heat exchangers are used almost anywhere.