This document discusses renewable sources of energy. It defines renewable energy as energy from sources that are naturally replenished, such as sunlight, geothermal heat, wind, tides, water, and biomass. Some key renewable energy sources covered include solar, wind, hydro, and bioenergy. The document outlines technologies for harnessing these sources, such as photovoltaic cells, solar balloons, and wind turbines. It also discusses emerging technologies that harvest energy from natural resources like plants, bacteria, and trees. In conclusion, the document emphasizes that renewable energy can provide clean energy for the world in a sustainable way.

1. RENEWABLE SOURCES
OF ENERGY
DONE
BY
PREMKUMAR.S
DEVA.R

3.  Energy is the power to do works and drive machine.
 Energy cannot be made or destroyed , regarding motion,
there are kinetic and potential energy
 Regarding power there are two kinds of energy
1.Renewable energy
2.Non-renewable energy
INTRODUCTION

6.  Bio-energy
 Geothermal
 Wind
 Solar
 Hydrogen
 Tidal
and many more….
Classification of renewable energy

7.  Most renewable energy comes either by directly or
indirectly from the sun.
 Sunlight or solar energy , can be directly for heating and
lighting homes and other buildings , for generating
electricity.
 Solar radiation is radiant energy emitted by the sun ,
particularly electromagnetic energy. About half of the
energy is in the visible.
 Solar technologies are generally classified as active and
passive solar energy.
Solar Energy

9.  When sunlight is absorbed by the materials , the solar
energy knocks electron loose from their atoms , allowing
the electrons to flow through the material to produce
electricity.
 Several connected PV arrays can provide enough power
for a household ; for large electric utility or industrial
applications , hundreds of arrays can be interconnected
to form a single , large PV systems.
Photovoltaic (PV) Effect

10.  Solar balloons has been made for consuming energy.
 500 watt to 1 kilowatt energy from single balloon.
 This technology is named as concentrated photo voltaic
(CPV) technology.
Solar Balloons

11.  It converting wind energy into electricity by using wind
turbines.
 Wind comes from atmospheric changes; changes in
temperature and pressure makes the air move around the
surface of the earth.
 A wind turbine captures the wind to produce energy.
 It create power without using fossil fuels without producing
green house gases or radioactive toxic waste.
 Wind power is one of the best way to combat global
warming.
Wind power

13.  Synthetic solar cells created on tobacco plants.
 Electricity from bacteria and grass clippings.
 Virus battery.
 Energy from cactus.
 Living batteries.
 Harvesting energy from spinach.
 Energy to run LEDs harvested from trees.
 Generating energy from trees to power sensors.
Renewable energy from other
natural resources

14. Saving energy
Saving the environment
Excellence
Reliability
Cost-effective
Efficient
Clean and sustainable
and many more…..
Advantages

15.  Electricity provider.
 Farmer or rancher.
 Home owner.
 Small business owner
Applications of renewable sources

16. Renewable energy technologies can help to contribute to a
clean and secure energy for our nation and the world.
Our earth.
We have to make a balance between energy consumptions
and environment protection.
We have to make more efforts to ensure that the world’s
resources are to be used in a sustainable energy.
conclusion

17. Books
• Advanced Renewable Energy System , S.C.Bhatia.
• Energy technology, S.Rao & B.B.Parulekar.
Websites
 www.stateofgreen.com
 www.solarpedia.com
References