Solar energy is a free source of energy which is
renewable, sustainable, unlimited and will be the main source of power in near
future. Sun is an important source of infinite energy. Earth received energy
from sun as the form of light and that is turned into electrical, thermal and
other form of energy.

Earth’s environment and climate are influenced by
solar energy. Human, animal & all other living beings are also depends on
the light of sun. Sun provided only 0.15% of world’s power. But, if it is
possible to consume all the energy from sunlight, it can supply more 5000 time
as much energy as the world required.

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Solar energy is a term which defines a range of
method for collecting energy from the sun. For example, wind, hydropower,
biomass, photovoltaic cell etc. all are the solar power. Wind flows in high and
low temperature & creates waves. Rainfall, made by the sun-warmed
evaporated water from the rivers, seas are the source of the hydro power. There
is another forms of energy which is known as fuels as like coil, gas & oil.
They are formed trillions of years ago from the decomposed plans which are grew
by the cared of the sun.

Sunlight can be converted as electrical energy.
It’s technology are categorized as passive solar or active solar. Active solar
technologies are by the use of photovoltaic systems. On the other hand, passive
solar techniques are by the orientation of a building to the sun,, selection of
materials with thermal mass or light-dispersing properties, and designing spaces that
naturally circulated air .

Solar energy is directly converted into electrical
energy with the help of solar cells. It is also known as the photovoltaic cell.
When sunlight fall on the cells, this absorbed the energy from photons &
this absorbed energy knocked out the electrons in the silicon, making them to
flow. By this process electricity are converted from sunlight.

There are many types of solar panels. As like,
flat plate collectors, focusing collectors and mostly used solar cells. A flat
plate collectors are consists of a black rectangular frames, two or three
sheets of glass, and copper plumbing. The another types of collectors is
focusing collector. They consists of mirror of mirrors which are focused in one
spot.