Shanid.P
MESCE Kuttippuram
• NEED OF RENEWABLE ENERGY
• DEFINITION OF RENEWABLE ENERGY
• VARIOUS FORMS OF RENEWABLE
ENERGY AND ITS ADVANTAGES
• RENEWABLE ENERGY IN INDIA
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energy resource
naturally regenerated over a short time scale
directly from the sun (thermal)
indirectly from the sun (wind, hydropower)
from other natural movements and mechanisms of the
environment (geothermal, tidal energy).
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1.When its source cannot run out (like the sun) or can easily be replaced (like wood).
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2. When their sources are carbon neutral. That means they do not produce carbon compounds (such as other green house gases).
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3.When they do not pollute the environment. (air, land or water).
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1) WIND ENERGY
2) SOLAR ENERGY
3) BIOFUELS
4) HYDROPOWER
a) Small hydro
b) OCEAN Thermal
c) TIDAL
d) WAVE action energy
5) GEOTHERMAL ENERGY
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• The largest wind turbine in the world, located in Hawaii,
stands 20 stories tall and has blades the length of a football
field.
• An average wind speed of 14 miles per hour is needed to
convert wind energy into electricity.
• The first power-generating turbine was constructed in Ohio
during the late 1800's and was used to charge batteries.
• Wind energy is the fastest growing segment of all renewable
energy sources.
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•WIND TURBINES REQUIRE NO FUEL
•WIND TURBINES DO NOT PRODUCE
ANY WASTES, GREENHOUSE GASES,
TOXINS OR BY-PRODUCT THAT CAN
HARM THE ENVIRONMENT.
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• CREATES MORE JOBS
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LAND BENEATH WIND TURBINE CAN BE USED FOR FARMING AND GRAZING
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A good method of supplying energy to remote areas
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•Wind farms can be built offshore
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It is considered 'renewable energy' because...
• The technology used to convert the sun's power into
electricity does not produce smoke (carbon dioxide and
other air pollutants).
• Tapping the sun's energy does not usually destroy the
environment.
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Largest solar thermal power plant generating facility in the world: Solar Energy Generating Systems (SEGS) in California, with the combined capacity from three separate locations at 354 megawatts.
•Solar energy will last forever whereas it is estimated that the world’s oil reserves will last for 30 to 40 years.
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•Solar cells make absolutely no noise at all. On the other hand, the giant machines utilized for pumping oil are extremely noisy and therefore very impractical.
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•Very little maintenance is needed to keep solar cells running. There are no moving parts in a solar cell which makes it impossible to really damage them.
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•Solar energy can be used in remote areas where it is too expensive to extend the electricity power grid.
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•Solar energy does not cause pollution. However, solar collectors and other associated equipment / machines are manufactured in factories that in turn cause some pollution
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• Biomass is used to make biofuels.
• Biomass is biological material derived from
living, or recently living organisms.
• Biofuels are liquid fuels which have been
derived from other materials such as waste
plant and animal matter.
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Waste residues will always exist – in terms of scrap wood, mill residuals and forest resources.
Properly managed forests will always have more trees, and we will always have crops and the residual biological matter from those crops.
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•It makes use of waste materials.
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•Biofuel is
cheap.
•It will lead to
less demand on
fossil fuels.
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•Hydropower is renewable energy source that doesn't
cause global warming because it doesn't releases
dangerous greenhouse gases.
•China is the largest producer of hydroelectricity,
followed by Canada, Brazil, and the United States
(Source: Energy Information Administration).
•Hydropower is the most important and widely-used
renewable source of energy.
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To meet any changes in demand for
electricity, hydroelectricity generators
can be stopped and started in minutes.
A fossil fuel power station can take up to
eight hours to shut down or restart
A nuclear power station can take up to
several days.
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Operation and maintenance costs for
hydroelectricity plants are much lower than
for thermal electricity power plants.
Breakdowns are few because their mechanical
design is relatively simple, and no excess heat
is generated during operations.
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Constant rate
of electricity
production
Long life
No waste by-
products
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Geothermal energy is the heat from the
Earth.
Geothermal energy is called a renewable
energy source because the water is
replenished by rainfall, and the heat is
continuously produced by the earth.
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The Pohutu Geyser in New Zealand erupts with a natural blast of the Earth's interior heat.
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• Because geothermal energy is energy in and of itself, no
outside sources of fuel are needed to keep the power
houses running.
• The supply of this renewable energy is constant, as well
as without limits since the earth is never going to stop
producing heat energy and in theory, energy is
abundant enough to supply all the needs of all mankind.
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First country in the world to set up a ministry of
non conventional resources, in early 1980s
The renewable power installed capacity forms
12% of the total installed capacity as on Oct 2012
Actual electricity generation from renewable
energy sources equals 49.04 billion units.
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RE generation from Small Hydro power
is 3421 MW, i.e 13% of RE
With 17,875 MW of generation, wind
continues to account for 70% of the
installed RE capacity
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Renewable Energy Capacity
of India as of 2012
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Wave energy Plant at Vizhinjam near Trivandrum in India
Radiant energy Compressed natural gas Anaerobic digestion Hydrogen Antimatter Nuclear
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Renewable Energy Sources and Emerging Technologies By D.P Kothari, K.C Singal, Rakesh Ranjan.
Renewable Energy : A common sense energy plan by Brad Linscott
Solar Energy: Renewable Energy and the Environment by Robert Foster, Majid Ghassemi, Alma Cota.
Power Ahead with Renewables: Leaders And Laggards, Report by Greenpeace India
www.iread.gov.in www.mnre.gov.in
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