India faces acute energy scarcity that hinders growth, but renewable energy can help. Solar power in particular has potential due to India's climate, and could provide 18% of capacity by addressing challenges like grid integration and high costs. For poor people, solar technologies can help as the upfront costs are reasonable for small loads and there are no running costs, allowing the system to pay for itself in 5-7 years. Widespread adoption of renewable energy could power India and support its development.

1. TOPIC:
SOLAR ENERGY IN INDIA –HOW TO HELP POOR WITH SUN
POWER
SELF STUDY COURSE-1
(An Autonomous institute)
Department of Electrical and Electronics Engineering,AITAM,Tekkali

2. Solar energy
Department of Electrical and Electronics Engineering,AITAM,Tekkali

3. Solar energy in india ?
What is solar energy ????
Energyderivedfromthesun'sradiation.SolarenergyisusedonEarthi
n various ways. It is used as a passive source of energy,
for example, inthe formof sunlight that comes througha windowand
heats up a room, or as an active source, as in the conversion of
sunlight to electrical energy in solar cells. Earth receives solar energy at
the rate of approximately 1,73,000 TW.
Definition:
Department of Electrical and Electronics Engineering,AITAM,Tekkali

4. Solar energy in INDIA ????
Department of Electrical and Electronics Engineering,AITAM,Tekkali

5. Are Solar and New Energy Sources the answer to
India’s energy challenges?
Their potential is undeniable: in five years they could account for
18% of capacity—if only about 6% of generation
is achieved. Wind and solar could contribute much of this alone. But
scaling up renewable generation means resolving fundamental
challenges of supply volatility, grid integration, geographic
dispersion and un competitiveness.
Someone must bear the higher costs of renewable power sources.
While the central government has developed several policies to this
end, all states expect Gujarat* and some consumers might be less
eager to finance further renewable development.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

6. "India is the fifth largest consumer of energy in the world, and it is projected to
surpass Japan and Russia to become the world’s third biggest energy consumer by
2030. At the same time, the country is facing an acute energy scarcity which is
hampering its industrial growth and economic progress.
With mounting concerns on global warming, climate change and the looming
threat of fossil resource scarcity, India is increasingly looking towards renewable
energy to power itself. A fundamental shift is already happening in many parts of
the country in the context of renewable energy and clean technology. EAI is one of
the leading support resources which is catalyzing and facilitating this
fundamental shift.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

7. How solar energy help to poor people……
Department of Electrical and Electronics Engineering,AITAM,Tekkali

8. Solar technology isn't new. Its history spans from 7th B.C to
today.
In the beginning people use the solar for make a fire by using
magnifying glasses.
In earlier 17th century Romans are invented the new thing to
burn the wood in other ships by bronze sheets.
Some facts on solar energy
Department of Electrical and Electronics Engineering,AITAM,Tekkali

9. In 1839 French scientist Edmond Becquerel
discovers the photovoltaic effect
In 1954 photovoltaic technology is born in USA
when develop silicon solar cell at bell labs, this
solar cell has an efficiency of 4%.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

10. Materials for Solar cell
Solar cells are composed of various
semiconducting materials
1. Crystalline silicon
2. Cadmium telluride
3. Copper indium diselenide
4. Gallium arsenide
5. Indium phosphide
6. Zinc sulphide
Department of Electrical and Electronics Engineering,AITAM,Tekkali

11. Over 95% of all the solar cells produced worldwide are
composed of the semiconductor material Silicon (Si). As
the second most abundant element in earth`s crust,
silicon has the advantage, of being available in sufficient
quantities.
 To produce a solar cell, the semiconductor is
contaminated or "doped".
 "Doping" is the intentional introduction of chemical
elements into the semiconductor.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

12. 3. electron-hole formation
Photovoltaic energy conversion relies on the number of
photons strikes on the earth. (photon is a flux of light
particles)
• On a clear day, about 4.4 x 1017 photons strike a square
centimeter of the Earth's surface every second.
• Only some of these photons - those with energy in
excess of the band gap - can be converted into
electricity by the solar cell.
• When such photon enters the semiconductor, it may be
absorbed and promote an electron from the valence
band to the conduction band.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

13. Therefore, a vacant is created in the valence
band and it is called hole.
 Now, the electron in the conduction band and
hole in valence band combine together and
forms electron-hole pairs.
Department of Electrical and Electronics Engineering,AITAM,Tekkali

14. Department of Electrical and Electronics Engineering,AITAM,Tekkali

15. Disadvantages:
1.Soar power can be obtained in night time
2.Soar cells (or) solar panels are very expensive
3.Energy has not be stored in batteries
4.Air pollution and whether can affect the production
of electricity
5.They need large are of land to produce more
efficient power supply
Department of Electrical and Electronics Engineering,AITAM,Tekkali

16. Three main uses:
• Heating of water
• Solar thermal power
stations
• Photovoltaic panels
Uses for Solar Energy
Department of Electrical and Electronics Engineering,AITAM,Tekkali

17. How it is used to poor people
Availability of solar energy is more
When compare to other plants the solar power system is
possible to install for our required power, so the cost is also
reasonable but not for poor if the govt gives offer to promote
solar power then poor and farmer will gain a lot frm sun power
There is no running costs in this plant for small requirements
(i.e. house loads) so, our installed cost may cover in the span
of 5 to 7 years
Department of Electrical and Electronics Engineering,AITAM,Tekkali

18. This session therefore is meant to discuss the
development of alternative technologies, its
overview and issues and
challenges facing the renewable energy power
sector, in hopes that it will encourage even
more rapid and
extensive development of the renewable energy
resources on the Indian subcontinent
Conclusion:
Department of Electrical and Electronics Engineering,AITAM,Tekkali

19. References:
www.seminaronly.com
www.wikipedia.com
Department of Electrical and Electronics Engineering,AITAM,Tekkali

20. Department of Electrical and Electronics Engineering,AITAM,Tekkali