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GEOTHERMAL ENERGY

GEOTHERMAL ENERGY

INTRODUCTION 

  • Geothermal energy is the heat that comes from the sub-surface of the earth. It is contained in the rocks and fluids beneath the earth’s crust and can be found as far down to the earth’s hot molten rock, magma.
  • Geothermal power is the electricity generated from the heat source within the earth’s crust.
  • This geothermal energy originates from the geological processes during formation of the planet, radioactive decay of minerals, and from solar energy absorbed at the surface.
  • Geothermal heat energy can be recovered and exploited for human use, and it is available anywhere on Earth’s surface.

People can capture geothermal energy through:

  • Geothermal power plants, which use heat from deep inside the Earth to generate steam to make electricity.
  • Geothermal heat pumps, which tap into heat close to the Earth’s surface to heat water or provide heat for buildings.

HOW IT WORKS

  1. Hot water is pumped from deep underground through a well under high pressure.
  2. When the water reaches the surface, the pressure is dropped, which causes the water to turn into steam.
  3. The steam spins a turbine, which is connected to a generator that produces electricity.
  4. The steam cools off in a cooling tower and condenses back to water.
  5. The cooled water is pumped back into the Earth to begin the process again.

GEOTHERMAL ENERGY IN INDIA

  • India’s first-ever Geothermal Field Development Project is to be established in Leh . The project would be undertaken by ONGC.
  • The project will be named as Geothermal Field Development Project which will going to established at Puga Village off Eastern Ladakh.
  • Puga has been identified as the hotspot of geothermal energy in the country (potential of more than 100 mw of geothermal energies.)

 India’s first-ever geothermal field development project

ONGC has planned this Geothermal Field Development Project in Ladakh in three phases

  • Phase 1:It involves drilling upto 500 metres depth and setting up of a pilot plant of up to 1 megawatt (MW) power capacity.
  • Phase 2: It involves deeper drilling to explore the potential of the thermal reservoir and setting up of a higher capacity demo plant and preparing a detailed project report.
  • Phase 3: This phase include set up of a commercial plant . The estimated power supply would be of 250 MW.

Environment & Biodiversity

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