2. Types of Energy
Energy can be broadly divided into two
Non Renewable Energy
3. Renewable Energy
Renewable energy can be generated
continuously practically without decay
of source. E.g.-
4. Solar Energy
Solar energy can be converted into
electrical energy by using solar panels,
or alternatively, be used as thermal
energy using solar water heaters, solar
5. Wind Energy
India is world’s third largest producer
of electricity generation using wind
power by wind mills.
6. Geothermal Energy
A lot of energy exists inside earth
crust. Natural hot water springs are a
good source of getting such energy.
7. Hydro Energy
Using dams, water is allowed to pass
through turbine blades, which
produces electricity. In India, after
coal, most of the energy is produced
by this method.
8. Non Renewable Energy
Non renewable energy cannot be
generated again and again, e.g.
energy generated from combustion of
fossil fuels, energy from coal and gas
Energy can neither be generated nor it
can be destroyed. It can only be
converted from one form to another.
For example, in a room heater,
electrical energy is converted to the
Turbine converts mechanical energy
stored in steam to electrical energy.
10. Why to Conserve?
We have limited fuels available on
Our demand for energy is increasing
It is possible that someday, most of
fuels will be exhausted, and we will
have to switch over to alternate
11. Limited Fuels
At present consumption levels-
Crude oil will last only for 40 years.
Gas will last for 60 years.
Coal will be finished in nearly 200
Ever thought of life without oil
15. Energy Conservation in
In India, government has passed
“Energy Conservation Bill, 2001” for
better utilization of energy and
conservation of the same.
By this act, it is mandatory for energy
intensive sectors to get their “Energy
Audit” conducted by accredited energy
16. Bureau of Energy
This body keeps watch on energy
consumption patterns, develops norms
for appliances etc.
It also organizes different competitions
e.g. poster & slogan competition etc.
For details, please visit:
17. Star Ratings
BEE has also initiated “Star Rating
System” for electrical appliances e.g.
refrigerator, CFL, geysers etc.
In this system, 1-5 stars are allotted to
products depending on their energy
efficiency. A five star product means
that it consumes least energy in its
18. What Can We Do?
We, the children can do our bit to save
energy. We should not waste energy in
school or at home.
26. At Home
Watching interesting programs on TV
is interesting, but afterwards, TV
should be switched off.
27. At Home
While going to purchase new products,
e.g. refrigerator, geysers, CFL etc., we
should insist upon purchasing a five
star product rather than cheap and
energy waster product.
28. How will it help?
Take an example:
We replace one 100W bulb with a 13W
Let us assume electricity is available
for Rs. 3.00 per unit, and this bulb is
used for 6 Hours a day.
The annual saving would be….
29. Power Saving
Power saved: 100W-13W = 87W
=87W X 6 Hours X 365 Days
=17.520 kWH or Units
Say Rupees 50 per one bulb replaced.
Remember to replace light bulbs with
CFLs so electricity could be available
for more time.
You can also ask your parents for a
chocolate or some other gift after
reducing your electricity bill.
31. What Else can be Done?
We should discuss energy
conservation with our friends and tell
others how can we reduce energy