Renewable energy, also known as green or sustainable energy, refers to the energy obtained from natural resources that can be replenished or renewed naturally. These resources are abundant and widely available, and their use does not deplete or harm the environment, making them a sustainable and eco-friendly option for meeting our energy needs. Here's a description of renewable energy: Renewable energy is a form of clean energy that is derived from sources that are naturally replenished, such as sunlight, wind, water, geothermal heat, and bioenergy. One of the most well-known forms of renewable energy is solar power, which is generated by harnessing the energy from sunlight through solar panels or photovoltaic cells. Solar power is a clean, abundant, and reliable source of energy that can be used to generate electricity, heat water, or power various devices and appliances.

1. • It is the energy from a source that is not depleted when used, such as
wind or solar power.
• Renewable energy is energy generated from natural resources —such
as sunlight, wind, rain, tides and
• geothermal heat—which are renewable (naturally replenished).
• Renewable energy technologies range from solar power, wind power,
hydroelectricity/micro hydro, biomass and biofuels for
transportation.

2. Renewable
Resources
• Solar energy
• Windenergy
• Hydropower
• Heat Energy
• Biomass
There are many sources of renewable
energy, but all of them, except
geothermal energy, are more or less
directly related to the sun: the main
source of clean and sustainable
energy for the earth.

3. • Solar power is the technology of obtaining usable
energy from the light of the sun.
• Solar power energy has come into use where
other power supplies are absent, such as in
places off from the national electrical grid
and in space.
• As of 30 June 2017, India’s solar grid had a cumulative
capacity of
13.11 GW
• Solar energy is currently used in a number of
applications:
• Heat (hot water, building heat, solar cooking)
• Electricity generation (photovoltaics and solar thermal,
Stirling and
other heat engines)
• Desalination of seawater (taking the salt out so it
can be used for drinking or growing crops).
• Lightning
SOLAR PV
PANNEL

4. CONS
• Initial Cost (Rs. 90-120
per watt)
• Produce Power During
Day
• Solar Cells Effectiveness
(14%-17%)
• Large Area for Setup (10
sqm/kw)
• Expensive Storage (
batteries )
PROS
• Clean Energy Source
• Renewable and Sustainable
• Power Remote Areas
• Can be Installed on Rooftops
• Reduce Electricity Bills
• Availability
• Low Maintenance
• Silent

5. • Wind power is using the energy of Wind has
been used since ancient times to move ships,
and for hundreds of years to pump water or
grind corn and grain into flour, now it is usually
changed into electricity using wind turbines.
• As of the end of March 2017 the total
installed wind power capacity was 32.17
GW
• Most modern wind power is generated in the
form of electricity by converting the rotation
of a turbine blades into electrical current by
means of an electrical generator.

6. PROS
• Clean Source of Power
• Renewable Source
• Cost Effective
• Extra Savings for Land
Owners
• Use of Modern Technology
• Rapid Growth and Huge
Potential
• Can be Built on Existing
Farms
CONS
• Wind Reliability
• Threat to Wildlife
• Noise and Visual
Pollution
• Expensive to Set Up
• Safety of People
• Suitable to Certain
Locations
• Effect on Environment

7. • Hydropower is changing the energy of
moving water into more useful forms.
• Flowing water creates energy that can be
captured and turned into electricity. This is
called hydroelectric power or hydropower.
• Today the largest use of hydropower is for a dam
that can use the
falling water to make electricity.
• As of 30 April 2017, India's installed utility-
scale hydroelectric capacity was 44,594 MW.

8. PROS
1. Clean Source of Power
2. Renewable energy source
3. Cost competitive energy
source
4. Contributes to development
of remote communities
5. Recreational opportunities
6. Fundamental vehicle for
sustainable
development
CONS
1. Environmental damage
2. High upfront capital costs
3. Might cause conflicts
4. May lead to droughts
5. Risk of floods in lower
elevations
6. Carbon dioxide and
methane emission

9. • This type of energy is obtained by tapping the
heat of the earth, which is mostly in the form
of hot water and steam. Various
technologies are used to get to the heat under
the earth’s surface at different depths.
• In some areas of the planet geothermal
energy is closer to the surface and therefore
easier to harness.
• Several metres under the earth’s surface
the temperature is between 10° and 16°C.
In winter this heat can be brought to
buildings with pipes.
• Another technology uses deep wells in hot rock
in which fluid is heated to produce steam,
which then drives turbines to generate
electricity. The facilities that enable this process
are called dry steam, flash steam and binary-
cycle plants.

10. PROS
1. Renewable Source
2. Environment Friendly
3. No Fuel Needed
4. Abundant Supply
5. Significant Savings for Home Owners
6. Smallest Land Footprint
7. Innovation in Technology
CONS
1. Suitable to Particular Region
2. High Initial Costs
3. Cost of Powering the Pump
4. Surface Instability
5. Environmental Concerns
6. High Temperatures Needed
7. May Run Out of Steam

11. • Biomass energy is the energy that is derived from organic matter of plants and
animals.
• Some of this is burned to make electricity, some is made into biogas, biofuel,
like ethanol as a replacement
for gasoline.
BIOMASS
SOURCES
BIOPLANT
PROCESS

12. CONS
• Not Totally Clean When
Burned
• Can Lead to Deforestation
• In-efficient
• Requires Lot of Space
• Expensive
PROS
 Dependency on Fossil Fuels
is Reduced
 Carbon Neutral
 Widely Available
 Can be Used in Many Forms
 Helps Reduce Waste

13. • We can’t run out of renewables
because nature replenishes them
faster than we consume them.
• The use of domestic power
generators (e.g. solar panels on the
roof) reduces the strain on power
distribution systems.
• Green electricity is becoming
increasingly accessible to the
average consumer.
• Renewables are generally not
hazardous to the environment.
• Biomass and geothermal
energy need wise
management to avoid their
depletion.
• Renewable heat is still
expensive and hard to access
• Some green energy
installations take up large
pieces of land that can be
used to grow crops.
• If clean energy becomes prevalent,
the electricity transmission and
distribution systems must be
transformed and managed more
actively
This distribution is done to achieve economies of scale, or to bring energy generation closer to the
resource (e.g. mines) and away from populated areas (for health reasons). However, some of the energy,
especially heat, is lost during the transportation.