Geothermal is a renewable source of energy which holds abundant energy as potential as any other energy sources. Indonesia is one of the developing countries located within the 'ring of fire' area which accommodates groups of volcanoes capable of providing geothermal energy source. The government of Indonesia has been encouraging the utilization of potential geothermal energy as an electrical power plant energy source. This is the main reason behind the establishment of PT Geo Dipa Energi.