This document discusses different energy sources including renewable and non-renewable sources. It provides examples of non-renewable sources like coal and petroleum as well as renewable sources like sunlight, wind, and water. It also lists various types of energy sources including solar, wind, geothermal, nuclear, tidal, hydroelectric, and biomass. Wind energy is then discussed in more detail, explaining that it is a form of solar energy that uses wind turbines to convert the kinetic energy of wind into electricity using windmills.

2. Non-Renewable or Conventional sources of Energy
Renewable or Non-Conventional sources of Energy
Different sources of Energy
Good Source of Energy
Wind Energy

3. A non-renewable resource (also called a finite resource)
is a resource that does not renew itself at a sufficient
rate for sustainable economic extraction in meaningful
human time-frames. They are also called Conventional
Source of Energy.
Ex:- Coal, Petroleum, Nuclear Fuels, etc.

4. A renewable resource of energy is a natural resource which
replenishes to overcome resource depletion caused by usage and
consumption, either through biological reproduction or other
naturally recurring processes in a finite amount of time in a human
time scale.
Renewable resources are a part of Earth's natural environment and
the largest components of its ecosphere.
This type of energy is also called Non-Conventional Source of Energy.
Example:- Sunlight, Wind, Water, etc.

5. Solar Energy.
Wind Energy.
Geothermal Energy.
Nuclear Energy.
Tidal Energy.
Hydroelectric Energy.
Biomass Energy.

7. Examples are :-
Sunlight :- The sun provides us with heat, energy, light and vitamin D.
Water :- Water resources are sources of water that are potentially useful. Uses
of water include agricultural, industrial, household, recreational and environmental
activities.
Air :- . Air is a third critical resource for humans, plants, animals and all other
organisms within a natural area. It is also used to generate electricity.
The characteristics of a good source energy are:-
 It should have a high calorific value
 It should be easy to handle
 It should be easily available
 It should be easy to store
 It should be cheaper.
 It should produce less amount of smoke.

8. Wind energy is a form of solar energy.
Wind energy(or wind power) describes the process
by which winds are used to generate electricity.
Wind turbines converts the kinetic energy of
wind into mechanical power.
A generator converts mechanical power into
electricity.
It uses WIND MILL.

9. A mill or machine operated by the wind usually acting on
oblique vanes or sails that move it in anti-clock or clock
wise direction according to the winds to generate
electricity. It is called Wind Mill.
Advantages:-
-It is eco-friendly.
-It will never exhaust.
Disadvantages
-Setup cost is high. Requires high maintenance.
-Minimum wind speed – 15km/hr continuously required for
electricity generation.