The presentation is about the renewable sources of energy and its present scenario of year 2010. It majorly talks about the generation and utilization of energy through renewable sources.

1. RENEWABLE SOURCES OF ENERGY
By:
OM SHIVAM
EEE, Dr. MGR University, INDIA

2. INTRODUCTION
Energy comes from natural resources,Which have potential of
being continiousaly replenished.
Such as
Solar Energy
Wind Energy
Hydro Energy
Geothermal Energy
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3. Overview
About 19% of global energy consumption came from
RENEWABLES.
13% came from Biomass,used for heating
3.2% came from Hydroelectricity
2.7% came from other Renewables
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4. Contribution Of Renewables In Global
Electricity Generation
18% of total global electricity generation is shared by the
Renewables
While 15% is contributed by Hydroelectricity alone
and 3% is contributed by new Renewables
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5. Solar Energy
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6. INTRODUCTION
Energy derived from the sun in the form of radiation is Solar Energy.
Solar Energy applications include :-
i) Space Heating & Cooling through Solar Architectures
ii) Solar Cooking; Daylighting
iii) High temperature processes heat for industrial purposes
It can be harnessed in two ways:-
(1) Direct
(2) Indirect
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7. Direct Harnessing Of Solar Energy
It is used directly as in Solar cookers,Solar water
heater, Solar furnace
It can also be directly converted into electrical energy as in
case of Solar Cells.
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8. Indirect Harnessing Of Solar Energy
It includes Orienting a building to the Sun,Selecting
materials with favourable thermal mass or Light dispersing
properties & designing spaces that natuarally circulate air.
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9. SOLAR CELLS
A device which directly converts
solar energy into electrical
Energy due to generation of
potential difference.
Now a days Monocrystalline
solar cells are being used
which are more effective than
that of ordinary solar cells.
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10. Advantages of Solar Energy
Solar Cells are used to provide electrical energy to the
satellites.
It is natuarally & abundantly available clean, pollution free
and a renewable source of energy.
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11. WIND ENERGY
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12. INTRODUCTION
Moving air is Wind, it is produced by the temperature
differences in the air.
The energy obtained from wind is called wind energy
Wind is used to run a windmill which in turn , drives
generator to produce power.
Wind mills are erected over a large area, which is known
as Wind Farm.
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13. Potential Of Wind Energy
The Netherland is famous for it,s windmills.
In India Gujarat & Tamilnadu have windmill,in which
Kannyakumari has largest windmill with potential of
38OMW of electricity.
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14. Advantages of Wind Energy
It is inexpensive ,pollution free & is abundantly available in
nature.
It can be generated and supplied to remote areas where other
energy resources are not available.
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15. HYDRO ENERGY
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16. INTRODUCTION
Running water has tremendous energy. This energy can be
used for running turbine to generate electricity.
Water is collected at a certain height in huge reservior,this
water has a lot of potential energy, this energy use to run
turbine to generate electricity.
It is an important source of electricity generation.
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17. Potential Of Hydro Energy
India has a number of hydro electric plants : Damodar
valley project ,Hirakund Dam, Bhakra Dam
Now a days small hydroelectric projects have great
potential for supplying electricity in India,two projects
with 150 kW & 200 kW have been installed in Himachal
Pradesh & one with 300kW at Kakroi in Haryana.
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18. Advantages of Hydro Energy
It is inexpensive ,pollution free.
It have low operating cost.
It helps in to control floods.
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19. GEOTHERMAL ENERGY
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20. Geothermal Energy
As “Geo” means earth; “Thermal” means heat.
The heat inside the earth, under favourable conditions, can be
utilised as a source of energy, this is called geothermal
energy.
In other words “the heat energy from hot rocks present
inside the earth”.
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21. Harnessing Of Geothermal Energy
In some geological regions of the Earth,the underground
water comes in contact with hot spots and changes into
steam. The steam so formed ,gets trapped in between
the underground rocks and gets compressed to very,very
high pressure.
This steam is extracted from the surface by sinking pipes
from the surface,which is used in running turbines
connected to the generator,which produces electricity.
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22. Potential Of Geothermal Energy
Geothermal Energy is the newest among all so it does
not have any cotribution of power generation in India
But in some of the parts of world it geologically exists in
present in US,Chile,Iceland,New Zealand.
Iceland produces 170MW of energy.
Presently 8000MW of global capacity is operational.
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23. Advantages Of Geothermal Energy
It is stable and most reliable source of energy as it is not
affected by weather or seasonal changes.
Energy emission is much lesser as compared to others.
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24. Growth Of Renewables In Few
Years
1400
1200
1000
Hydro Energy
800
Solar Energy
600 Bio Fuel
400 Wind Energy
200
0
2007 2008 2009
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25. Need To Promote Renewables
Renewables provide an enormous opportunity for
India,to not only meet its energy needs but also to reap
the social & environmental benefits.
Local environmental benefits such as land reclamation
and pollution abatment
Global environmental benefits such as reduction in
greenhouse gasses emission.
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27. THANK YOU
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