People have been using energy from sources like watermills for thousands of years to power devices and mechanisms. Now, energy powers almost everything in modern homes and daily life. Specifically, heating accounts for 60% of home energy use, with water heating and washing appliances making up another 25% and lighting/electricity the remaining 15%. There are several ways to conserve energy at home, such as using more efficient light bulbs, turning off appliances when not in use, saving water to also conserve energy, regulating thermostats when away, and improving home insulation. Globally, hydroelectric power provides about one fifth of all energy, while wind turbines continue increasing in size, and around 17% of worldwide electricity is used for lighting.

1. *

2. *
* Peoples use energy for various devices and
mechanisms to operate.
* Approximately 2000 years ago the Greeks
and Romans edged grains and olives in
Watermill
* Now peoples use energy for almost
everything

3. *People use energy at home ;
60% for heating
25% water for washing, laundering
15% for lighting and electricity

4. How we save electrical energy
* Lighting- light bulbs, lamps, chandeliers
outdoor lamps.
We can save energy by buying new economical
light bulbs like this
Those bulbs have ten times longer live and
with these bulbs we can save energy and
money too.

5. *Electric appliances - a TV , computers, ovens,
blenders, irons, vacuum cleaners, printers and other
devices
We save energy by turning off the computers ,TV,
Xboxes, play stations and other devices when we do
not use them

6. *
*We save water energy too.If you
save water then the you will save
energy too.When we wash hands,
brush teeth we save water, water
tap is not all the time open. And
when we finish we just turn off the
water tap.

7. 
* We have heaters fitted with a thermostat or
hand-operated valve for regulating the its
flow because when we are not at home we
turn off the heaters.
* Our home has an external wall insulation. It
is highly efficient and significantly reduces
heat loss .

8. *
* Approximately one fifth of all the
energy is hydroelectric power
* Record: the world's largest wind
turbine wing is more than 50 m long
* Worldwide, about 17% of the
electricity is consumed for lighting