2. W H E R E D O E S I T C O M E F R O M ?
• Solar energy comes from
the Sun.
• The Sun generates energy
in its core in a process
called nuclear fusion.
• Only a small portion of the
energy radiated by the sun
into space strikes the
earth, one part in two
billion.
3. UsesU S E S O F T H E S O L A R E N E R G Y
Solar energy is used in two ways:
•Thermal energy: is energy
possessed by a liquid (water) when
is heating by the solar rays. Central
heating or obtain warm water
•Photovoltaic energy: is the energy
created by converting solar energy
into electricity using photovoltaic
solar cells.
4. A D V A N T A G E S
• Solar energy is a resource that is
not only sustainable for energy
consumption it is in indefinitely
renewable.
• Solar power can be used to
generate electricity, it is also used
in relatively simple technology to
heat water.
• The use of skylight in home
construction can also greatly
reduce energy expenditure
required to light rooms in a homes
interior during the day
5. D I S A D V A N T A G E S
•The primary disadvantage of solar
power is that it obviously cannot be
created during the night. The power
generated is also reduced during time
of cloud cover.
• Solar panel energy output is maximized
when the panel is directly facing the
sun. If not we will see a reduced energy
production when the sun is not at an
optimal angle.
•Even todays most efficient solar cell
only convert just over 20% of the suns
rays to electricity
