Geothermal Energy is stored and generated inside the sub layers of the earth. As far as we know for geothermal energy the last layer we get energy from the magma from the mantle layer. We most often use geothermal energy to heat buildings, and parking lots. There are three different types of geothermal energy and many methods to achieve them. There is geothermal electricity production which can be done at dry steam power plants. For homes though, you use geothermal heat pumps(Go to paragraph 3 for more information on heat pumps).
Geothermal Energy has many ways of manipulating energy to create electricity. They make this electricity in geothermal power plants. There are 3 types of geothermal power plants according to Renewableenergyworld.com. There is dry steam, flash steam, and binary cycle. out of these 3 geothermal power plants flash steam is the most common because they use reservoirs of water to conduct energy. They separate the steam from the water using turbines or generator. But they can only do this process if the water temperature is over 360 degrees. Often left over water and/or condensed steam is returned to the reservoir, turning it into a sustainable resources for the power plant. The key difference between dry steam and flash steam power plants is that instead of using reservoirs and returning the leftover resources, dry steam is piped directly from underground wells where the steam would be sent tox a turbine/generator unit.
There are a lot of advantages with geothermal energy. One of them being you don't have any unsightly equipment outside you home and it also wouldn't be loud. Geothermal heating and cooling is quiet, and almost all of the equipment is underground. It is also very much eco-friendly! Geothermal heating and cooling systems pull heat from the underlayer of the earth and the system also pulls it from your home to put it back. This process dramatically reduces carbon discharge and there is no combustion of any kind. It also adds to your homes equity, which means it adds to your homes value.
More often than not, property owners consider geothermal heat pumps. Geothermal heat pumps use shallow ground to heat and cool buildings. Like in the image to the right, they had dug a shallow trench with looped pipe connecting to a well or body of water which would lead to the heat pump itself which would often be placed in a basement. The average geothermal heat pump costs around $1,500 to $2,500 per ton. The size/to depends on the size of the home. A standard single-family 2,000 square foot home usually requires a 5 ton heat pump, which would mean a total ranging from $7,500 to $12,500.
There are a few disadvantages about geothermal energy, many have to do with installation. One of the few is the upfront cost of installment, with the drilling and installment of the pipes the price can range from $30,000 - $50,000 and sometimes even more! Also as much as geothermal is eco-friendly some methods of installment are not. Some companies might use copper pipes or antifreeze solutions and many of which are NOT safe because the solution over time will leak into groundwater. Another disadvantage is that geothermal heating and cooling systems still use electricity.