As part of promoting non-conventional energy, the government is
setting up its first geothermal power project in Ladakh, according to the
Authotrities. Among the various new and renewable energy options, geothermal
energy is recognized as the cleanest, without smoke or environmental hazards.
Currently worldwide, about 10,715 megawatts (MW) of geothermal
power is generated in nearly 24 countries. Italy, New Zealand, USA, Japan,
Mexico, Philippines, Indonesia are some of the countries which are using
geothermal energy for electricity generation and thermal applications.
Exploration of geothermal fields needs knowledge of geology, geochemistry,
seismology, hydrology and reservoir engineering. In India, exploration and
study of geothermal fields started in 1970. The GSI (Geological Survey of
India) has identified 350 geothermal energy locations in the country. As per a
2005 report in International Association for Ladakh Studies, The Pugas valley
in the Changthang area of Leh offers the best solution to the ever-looming
power crisis in Ladakh. The estimated potential for geothermal energy in India
is about 10000 MW.
What is Geothermal Energy
In simple words ‘Geo’ means earth and ‘thermal’ means heat. Thus
geothermal energy is that heat energy obtained from hot rocks present inside
the earth, and this can be used as a source of energy to produce
electricity. From the surface down through the crust, the normal temperature
gradient( the increase of temperature with the increase of depth ) in the
Earth’s crust is 17 °C — 30 °C per kilometre of depth (50 °F — 87 °F per mile).
Working:
Some features of Geothermal
energy:
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Geothermal energy is almost pollution-free.
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Geothermal plants can operate round the clock, unlike those
based on solar and tidal energy.
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The cost of a geothermal plant is high as compared to a
coal-based plant, but operating costs are lower.
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The source of energy is free and renewable In India, there are
about 400 hot springs that can be tapped for geothermal energy. Ladakh,
Gujarat and Madhya Pradesh have good geothermal-energy potential. It is
estimated that 10,000 MW of electricity can be generated from geothermal
plants in India.
If implemented perfectly Geothermal Energy can be a good option
for India’s rapidly increasing energy requirements, but still a lot of research
and studies is required.
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