Geothermal energy is available throughout the year i.e. 365 days for any millions of year till the earth is going to exist. The geothermal power stations can run continuously unlike other power stations like wind mill which can’t run when there is no sufficient wind and the hydrothermal power stations depends on surplus water availability. From ancient times our ancestors have been using this energy to cook, hot springs for taking bath and to heat. Geothermal energy is cost saving as it has no dependence on fossil fuel, transportation and purchase of any materials for power generation.
The geothermal energy from the earth can be used directly or indirectly.
Direct Usage: Direct usage involves the hot water directly without processing or transferring it to another form of energy. Such as hot springs for bathing and in spas. The hot water from the ground is being pumped through pipes directly to heat up the homes, office buildings. The geothermal water is pumped via a heat exchanger, where the heat from the water is transferred into the buildings heating system. And in summer the process is reversed.
Indirect usage: The geothermal energy generated is converted into other form of energy i.e. to produce electricity. The geothermal plants produce electricity to meet out the power needs.