• Electrical India
  • Sep 21, 2015

3 Prominent Advantages Of Geothermal Energy

 Basically, geothermal energy means the heat derived from the earth. It is the cleanest source of renewable energy. An energy technology, called Enhanced Geothermal Systems (EGS), is changing the future of geothermal power.  

  In 2013, Ormat Technologies, Inc., the U.S. Department of Energy and Geotherm Ex successfully produced 1.7 additional megawatts from an Enhanced Geothermal System (EGS) project inside an existing wellfield in the U.S. This was the first EGS project to get connected to the electricity grid.

  According to a market research report by Research and Markets, three primary technologies are used to generate geothermal power, namely: dry steam, flash steam and binary cycle power plants. Currently, the market is witnessing significant changes in terms of technology adoption. This trend is likely to continue in the near future. Dry steam plant is the oldest technology. It requires high temperature resources for efficient generation of geothermal power. Flash steam plants accounted for a major market share in terms of overall installations globally. Flash steam power plants are further segmented into single flash, dual flash and triple flash power plants. Binary cycle power plant is a relatively new technology. Such plants utilise a heat exchanger with a secondary fluid that has a lower boiling point.

  Three prominent advantages of geothermal energy are:-

Low cost:

  As the purchase of fuel is absent, in case of geothermal power plants, its running cost is drastically low. 

Low emission:

  As burning of fuels is not involved in the geothermal power plants, their harmful emission is low.

Direct use:

  It is not necessary that geothermal energy should always be used to produce electrical energy. It may be used directly for heating premises when required.