Abstract: With restricted resource of fossil fuels the modern society is leading towards various other natural resources. Geothermal energy is the form of energy which is derived from internal heat of the earth. It is one of cleanest form of energy. People of Rome, China, and Japan are utilising geothermal energy from ancient times where it is manifestated on the earth surface basically for bathing and therapeutic purpose. Depending upon the depth of geothermal source and its temperature it is been utilised for various purposes like for bathing and swimming, agriculture, aquaculture, honey processing etc. This form of energy is used mainly in two ways one as direct utilisation and other as indirect utilisation. This paper elaborates various direct applications of geothermal energy. This paper also includes the worldwide status of direct application for geothermal energy from year 1995 to 2015.
Keywords: Geothermal Energy, Direct application, Ground source heat pump, Aquaculture, Agriculture.