The document provides information about a webinar on renewable energy presented by the Department of Electrical Engineering. It discusses various renewable and non-renewable energy sources including solar energy, wind energy, hydroelectric power, tidal power, biomass energy, and geothermal power. For each renewable source, it provides details on how it works and its advantages and disadvantages. It also shares statistics on solar power growth in India and lists existing solar plants.

1. #StudentsFirst
#CharacterMust
Webinar on
Renewable Energy

2. Renewable Energy
Webinar
on
Department of Electrical Engineering
Presented By:
Mr. Mohit A Bhasvar
Assistant Professor
GUNI - UVPCE
Helpline@ 9727729155

3. ELECTRICAL POWER GENERATION
CONVENTIONAL SOURCES
THERMAL POWER PLANT
HYDRO POWER PLANT
NUCLEAR POWER PLANT
NON CONVENTIONAL SOURCES
SOLAR ENERGY
Helpline@ 9727729155

4. Sources of Energy
Renewable Energy
Resources
Non – Renewable
Energy Resources
Also known as NON
CONVENTIONAL SOURCES
They can be renewed.
Also known as
CONVENTIONAL SOURCES
They cannot be renewed
again.

6. Electricity Generation, transmission and Distribution

7.  Energy from a source that is not depleted when used, such as wind or solar
power.
 Any energy resource that is naturally regenerated over a short time scale and
derived directly from the sun (such as thermal, photochemical, and
photoelectric), indirectly from the sun (such as wind, hydropower, and
photosynthetic energy stored in biomass), or from other natural movements
and mechanisms of the environment (such as geothermal and tidal energy).
What is Renewable Energy?

8. Renewable Energy

9. Renewable Energy Sources
 Solar Energy Source
 Wind Energy
 Hydroelectricity
 Tidal Power
 Biomass Energy
 Geothermal Power

10. Solar Energy Source
 Solar Energy is energy (light or heat) that comes from the sun.
 Solar Electric- Turning light from the sun directly into electricity,
using solar panels.
 Solar power is the conversion of sunlight into electricity, either
directly using Photovoltaic (PV), or indirectly using concentrated
solar power.

11.  Solar Panels are commonly called Photovoltaic Panels (PV Panels)
 Photo means light and voltaic means electricity.
 Photovoltaic panels are made from Silicon which is the same material
that makes up sand.
 Silicon is heated to extremely high temperatures at a factory, and then
formed into very thin layers
 When the sunlight hits the PV panel, it moves around tiny particles of
silicon called electrons.
 The silicon electrons travel though the wires that are built into the PV
panel to create energy!

13. Solar Energy Source
● Modern residential solar power systems use photovoltaic (PV)
to collect the sun’s energy. “Photo” means “produced by light,”
and “voltaic” is “electricity produced by a chemical reaction.”
● Commercial residential PV modules range in power output from
10 watts to 300 watts, in a direct current. A PV module must
have an inverter to change the DC electricity into alternating
current energy in order to be usable by electrical devices and
compatible with the electric grid.

15. Growth of Solar Power in India (in MW)
Rajasthan – 1294.60
Tamandu – 1267.41
Gujrat - 1123.36
{as on 31st July 2016}
(Source: “State wise installed solar power capacity report” Ministry
of New and Renewable Energy Govt. of India)
And 66% growth in Solar Roof Top Market.
Recently India added 240 MW of Rooftop Solar
Capacity against 145MW in Nov.2014 to Oct. 2015

16. Existing Solar Plants in India
● https://www.jagranjosh.com/general-knowledge/list-of-solar-power-
plants-in-india-1607686203-1

17. Solar energy Applications

18. Advantages to solar power
● Solar energy is free - it needs no fuel and produces no waste or
pollution.
● In sunny countries, solar power can be used where there is no
easy way to get electricity to a remote place.
● Handy for low-power uses such as solar powered garden lights
and battery chargers

19. Disadvantages to Solar Power
 Doesn't work at night.
 Very expensive to build solar power stations.
 Solar cells cost a great deal compared to the amount of
electricity they'll produce in their lifetime.
 Can be unreliable unless you're in a very sunny climate.

21. Wind is simply defined as moving air. When the earth heats up from sunrays it
releases wind, this is a balanced reaction meant to cool the earth. The sun heat is
felt more on dry land than on the sea. The air expands and easily reaches
maximum high altitudes, then cool air drops down and moves as wind.

22. SITE SELECTION
1.Highannualwindspeedarea
2.Notall obstructionsforradiusof3km.
3.penplainoropenshore.
4.Nearesttotheloadcentre
5.Nearesttoroadtransportation.
6.Topography-Suchasmountaingapshelptoincreasewind speed.

26. WORKING PRINCIPLE
• The wind power can be gained by making it blow past the
blades that will cause the rotor to twist.
• The amount of power transferred is directly proportional to the
density of the air, the area swept out by the rotor, and the cube
of the wind speed. It can be found out by the following
equation:

27. ● WIND TURBINES convert the kinetic energy in the WIND into
mechanical energy. And generator can convert the mechanical
power into electricity.
● The energy in the wind turn two or three propeller like blades a
rotor. Rotor is connected to the main shaft which spin a
generator to create an electricity.
● Wind turbines are mounted on tower about the height of 30meter
to captured the most energy.

28. Advantages of Wind power
 Wind is free, wind farms need no fuel.
 Produces no waste or greenhouse gases.
 The land beneath can usually still be used for farming.
 Wind farms can be tourist attractions.
 A good method of supplying energy to remote areas

29. Disadvantages of Wind Power
 The wind is not always predictable some days have no
wind.
 Suitable areas for wind farms are often near the coast,
where land is expensive.
 Can kill birds - migrating flocks tend to like strong
winds. Splat!
 Can affect television reception if you live nearby.
 Noisy. A wind generator makes a constant, low,
"swooshing" noise day and night.

30. Wind policy in states

31. Hydroelectricity
● Utilizes potential energy of water at high level for generation of
electrical energy is known as HYDRO-ELECTRIC POWER
STATION.
● A dam is built across a large river to create a reservoir. The higher
the head, the greater the amount of power that can be generated.
Water is stored in a reservoir during low electricity production.
Water is released and flows are controlled as electricity demands
peak.
● Water spins the turbines in the “powerhouse”. Electricity is
distributed to end user.

32. Hydroelectricity
● A dam is built to trap water, usually in a valley where there is an
existing lake.
● Water is allowed to flow through tunnels in the dam, to turn
turbines and thus drive generators.
● Hydro-electricity provides 20% of the world’s power

35. Lets us watch a video….

36. Advantages of Hydroelectricity
 Once the dam is built, the energy is virtually free.
 No waste or pollution produced.
 Much more reliable than wind, solar or wave power.
 Water can be stored above the dam ready to cope with peaks in
demand.
 Hydro-electric power stations can increase to full power very
quickly, unlike other power stations.
 Electricity can be generated constantly.

37. Disadvantages to Hydroelectricity
 The dams are very expensive to build.
 Building a large dam will flood a very large area upstream,
causing problems for animals that used to live there.
 Finding a suitable site can be difficult - the impact on residents
and the environment may be unacceptable.
 Water quality and quantity downstream can be affected, which
can have an impact on plant life.

38. • Fill in the missing word in the dams for hydropower plants
1) K __ d _ _ a dam
2) _ a _ a_ dam
3) __ A __ A T __ I dam
4) __ A __ __ A ___ S __ R __ V__ R
A A N
P N M
K P A
S R D R A O A

39. HYDRO ELECTRIC POWER PLANTS IN INDIA

40. TIDAL POWER
● Tidal power works rather like a hydro-electric scheme, except that
the dam is much bigger.
● A huge dam (called a "barrage") is built across a river estuary.
When the tide goes in and out, the water flows through tunnels in
the dam.
● The ebb and flow of the tides can be used to turn a turbine, or it
can be used to push air through a pipe, which then turns a turbine.
Large lock gates, like the ones used on canals, allow ships to pass.
● Only around 20 sites in the world have been identified as possible
tidal power stations.

41. TIDAL POWER

42. Advantages to Tidal Power
 Once you've built it, tidal power is free.
 It produces no greenhouse gases or other waste.
 It needs no fuel.
 It produces electricity reliably.
 Not expensive to maintain.
 Tides are totally predictable.

43. Disadvantages to Tidal Power
● A barrage across a large river is very expensive to build, and
affects a very wide area - the environment is changed for many
miles upstream and downstream.
● Many birds rely on the tide uncovering the mud flats so that they
can feed. there are few suitable sites for tidal barrages.
● Only provides power for around 10 hours each day, when the
tide is actually moving in or out.

44. BIOMASS ENERGY
Biomass is fuel that is developed from organic materials, a
renewable and sustainable source of energy used to create
electricity or other forms of power.
1. Scrap lumber
2. Forest debris
3. Certain crops
4. Manure
5. Some types of waste residues.

45. How Biomass Works
● Plant and animal waste is used to produce fuels such as
methanol, natural gas, and oil. We can use rubbish,
animal manure, woodchips, seaweed, corn stalks and
other wastes.
● Sugar cane is harvested and taken to a mill, where it is
crushed to extract the juice. The juice is used to make
sugar, whilst the left-over pulp, called "bagasse" can be
burned in a power station

46. ● Other solid wastes, can be burned to provide heat, or used
to make steam for a power station.
● Burn fuel > heat water to make steam>steam turns turbine
> turbine turns generator>electrical power sent around the
country

47. Advantages to Biomass
 It makes sense to use waste materials where we can.
 The fuel tends to be cheap.
 Less demand on the Earth's resources.

48. Disadvantages to Using Biomass
 Collecting the waste in sufficient quantities can be
difficult.
 We burn the fuel, so it makes greenhouse gases.
 Some waste materials are not available all year round.

49. Geothermal Power
 Hot rocks underground heat water to produce steam.
 We drill holes down to the hot region, steam comes up, is
purified and used to drive turbines, which drive electric
generators.
 There may be natural "groundwater" in the hot rocks
anyway, or we may need to drill more holes and pump
water down to them.

50. Advantages to Geothermal Power
 Geothermal energy does not produce any pollution, and
does not contribute to the greenhouse effect.
 The power stations do not take up much room, so there is
not much impact on the environment.
 No fuel is needed.
 Once you've built a geothermal power station, the energy
is almost free. It may need a little energy to run a pump,
but this can be taken from the energy being generated.

51. Disadvantages to Geothermal Power
 The big problem is that there are not many places where you can
build a geothermal power station. You need hot rocks of a
suitable type, at a depth where we can drill down to them.
 The type of rock above is also important, it must be of a type
that we can easily drill through.
 Sometimes a geothermal site may "run out of steam", perhaps
for decades.
 Hazardous gases and minerals may come up from underground,
and can be difficult to safely dispose of.

52. Is it Renewable?
● Geothermal energy is renewable.
● The energy keeps on coming, as long as we don't pump too
much cold water down and cool the rocks too much.