Geo (Earth) + Thermal (Heat). If you are fortunate enough to live in an area with this geologic activity in play close under the surface of the Earth, you can harness this energy.
Resources of geothermal energy range from the shallow ground to hot water and hot rock found a few miles beneath the Earth's surface and down to the extremely hot molten rock called magma. Geothermal energy can be used in many ways, from large and complex power stations to small and relatively simple pumping systems. Many regions of the world are already tapping geothermal energy as an affordable and sustainable solution to reducing dependence on fossil fuels, and the global warming and public health risks that result from their use.
To day Geo Thermal energy is being used for the following
- Power Plant to Generate Electricity - Geothermal power plants use steam produced from reservoirs of hot water found a few miles or more below the Earth's surface to produce electricity. The steam rotates a turbine that activates a generator, which produces electricity.
- Direct use of hot water - Geothermal hot water can be used for many applications that require heat. Its current uses include heating buildings (either individually or whole towns), raising plants in greenhouses, drying crops, heating water at fish farms, and several industrial processes, such as pasteurizing milk.
- Geo Thermal Heat Pumps - Geothermal heat pumps take advantage of the nearly constant temperature of the Earth to heat and cool buildings. The shallow ground, or the upper 10 feet of the Earth, maintains a temperature between 50° and 60°F (10°–16°C). This temperature is warmer than the air above it in the winter and cooler in the summer.