The document discusses solar energy and its installed capacity globally and in India. It summarizes that the average solar energy available at the earth's surface is 340 W/m2. The solar spectrum is divided into ultraviolet, visible light, and infrared bands. Statistics show that India's installed solar capacity increased by over 50% annually from 2014-2017, with capacity growing from 3,518 MW in 2014 to 17,873 MW in 2017. Projections estimate that Asia's share of global energy consumption will rise from 34.8% in 2015 to over 41% by 2040, with India replacing China as the primary driver of increased energy demand after 2020.

1. Introduction about solar energy
Dr. Challa Babu
ASCET, Gudur

2. Introduction about solar energy
 The sun radiating the light and heat energies to the earth atmosphere. The
average amount of energy available at the earth surface is 340 W/m2 .
 The radiated solar energy having the spectrum wavelength of 290 to
2500nm.
 This spectrum divided into 3 bands
1. Ultra-violet (UV) - 290nm to 380nm
2. visible light - 380nm to 780nm
3. Infra-Red (IR) light - 780nm to 2500nm
2

3. Solar spectrum
3
Solar spectrum for AM1.5G

4. Frequency and temperature of bands
4

5. Diameter: 1.39E9m(120 xgreater than earth)
Distancefrom earth =1.495E11 m(93 million miles)± 1.7%
Center:Density ≅100 xdensity of water andT>1E6KPoweredby
hydrogen fusion
Composedof layers. Theouter layer isthe photosphere
Effectiveblackbodytemperature of 5777 K
The SUN

7. Solar installed capacity (World)
7

8. Solar Installed capacity (Asia)
8

9. Solar installed capacity (India)
9

10. Installed capacity
Year Installed capacity (MW)
World Asia India
2014 1,74,139 57,184 3,518
2015 2,25,033 89,543 5396
2016 2,97,019 1,39,514 9647
2017 3,87,572 2,09,707 17,873
10
% increase
World Asia India
2014-15 29.22 56.58 53.38
2015-16 31.98 55.80 78.78
2016-17 31.16 50.31 85.27
29.22
56.58 53.38
31.98
55.8
78.78
31.16
50.31
85.27
0
10
20
30
40
50
60
70
80
90
World Asia India
% increase
2014-15 2015-16 2016-17

11. 11
5320
3886
1102
2857
837
910
655
3910
684
2504
321
1160
888
1052
0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
China
US
India
Europian Union
Southest Asia
Middle East
Africa
Energy demand in Twh
2016 2040
Forecast of Energy Demand
World Energy Outlook 2017 by IEA

12. Forecast of Energy consumption
12
50
78
157
200
224
257
303
356
410
523
575
610
661
739
0 100 200 300 400 500 600 700 800
1990
2000
2010
2015
2020
2030
2040
Forecast of energy consumption in Btu
World Asia
Year Percentage of
Asia share in
World energy
consumption
1990 14.04494
2000 19.02439
2010 30.01912
2015 34.78261
2020 36.72131
2030 38.88048
2040 41.00135
• The consumption of Asian countries at 2015 is 200 quadrillion Btu out of 575
quadrillion Btu consumption of the world.
• The projection for 2020, the consumption increased to 224 quadrillion Btu i.e., 12%
increase in 5 years span.

13. World Energy share (July 2016)

15. Global Energy Scenario

16. The engine of energy demand growth moves
to South Asia
China is the main driver of increasing energy demand in the current decade, but India takes over in
the 2020s as the principal source of growth

17. Renewables power up around the world

18. Why we are moving to solar?
 Abundant amount of solar energy availability
 Eco-friendly
 No Mechanical rotation
 Cost effective
 Easy to generate power, less time to erect
The statistics clearly conveys India emerging the solar power generation
in last five 5 years.