Disadvantages of geothermal power?

Question

as much info as possible please

Answer 1

Here are some disadvantages of using the power of geothermal energy to provide heat for your home or water through the use of a ground source heat pump.

The initial cost of design and installation can be costly, yet this investment would pay off over future years.

The area needed to lay the piping system can be quite large, and this may not be suitable for small developments.

Also, there are only a few places that can provide enough heat for geothermal power to be viable

Construction of the power plants can adversely affect land stability in the surrounding region. This is mainly a concern with Enhanced Geothermal Systems, where water is injected into hot dry rock where no water was before.Dry steam and flash steam power plants also emit low levels of carbon dioxide, nitric oxide, and sulfur, although at roughly 5% of the levels emitted by fossil fuel power plants.However, geothermal plants can be built with emissions-controlling systems that can inject these gases back into the earth, thereby reducing carbon emissions to less than 0.1% of those from fossil fuel power plants.

Answer 2

There are several disadvantages to geothermal power - the main one is that in general it is cost prohibitive. In order to general steam to turn a turbine, you have to inject water into the ground, extract it, cool it, and then inject it back into the ground. The pressures involved at the depth that most areas could use geothermal power are extremely high and would require a very large investment to harvest.

This leads to the second problem with geothermal power - it is a very local solution. Geothermal power is used in Iceland because it is so close to the surface. In Iceland, you can inject your water and get steam at a few hundred feet. This is not the case in most places. In Georgia, for instance, one would have to drill several thousand feet before it got hot enough to vaporize water, even at low pressures.

The final problem with geothermal power is that surfacial geothermal sources of energy tend to be in tectonically active regions. By this I mean that your source of power is a volcano, which is a bit volatile. It may be here today, but tomorrow it may destroy your geothermal plant. Iceland, again, is fortunate in that its source of geothermal power is rather predictable. Other areas, however, are not so fortunate.

Answer 3

basically the expense of drilling the well and the re-injecting of the cooled fluid that has been produced ...