Solar energy is a form of renewable energy obtained from the sun that can be converted into heat and electricity. It is produced through solar panels, which use photovoltaic cells to convert sunlight into an electrical current, and solar thermal systems that use the sun's heat to drive steam turbines and generate electricity. While solar energy systems are ineffective at night or when there is little sunlight, solar power production has increased in recent years due to falling prices and gains in efficiency, and it has the potential to generate a meaningful portion of the world's electricity in the future while reducing environmental pollution.

2. What is Solar Energy?
Form of energy which is obtained from the sun and made
useable to generate heat and electricity, as electrons are
knocked loose from atoms when sunlight is received.
Produces less than one tenth of 1% of global energy demands in
complete silence.
Sustainable and renewable power from an inexhaustible source,
the sun.
Pollution-free and ecologically acceptable.

3. What is it used for?
Goes through energy transformations into heat and electrical
energy via solar panels.
Generates electricity as electrons flows through cells, and is
converted into electrical current and powers many appliances.
Supply many homes with warm water as Sun’s thermal energy is
converted into heat.

4. How does it work?
Solar thermal power plants uses different techniques to concentrate
the sun’s radiant energy as a heat source and make it useable.
Solar panels (Photovoltaic cells) concentrates light onto collector
tower, produces molten salt to store and release the sun’s heat in a
controlled manner to drive a steam turbine which generates
electricity.
Absorbent plates on roofs uses concentrated solar power from solar
panels to heat liquid in tubes and produces warm water for houses.

5. Disadvantages
Solar panels is ineffective when it gathers very little or no
thermal energy from the sun.
It doesn’t work at night without a storage device e.g. battery to
provide energy for it.
Cloudy weather and obstructing buildings makes technology
unreliable and ineffective during the day.
Very expensive installment of system and requires plenty of
land area to collect sun’s energy at rates useful to lots of
people.

6. Interesting facts
Amount of world’s population using solar energy has surged up
by 20% over the last 15 years, due to rapid falling prices and
gains in energy efficiency.
Solar power could generate 2.5% of the world’s electricity by
2025.
Improves environmental quality which was damaged by
consumption of fossil fuels that pollutes the Earth.
Saves money and energy consumed. E.g. using the sun‘s heat
to dry clothes on a washing line instead of a dryer.

7. Conclusion
Although Solar Energy is not always a reliable energy source when
there is cloudy weather or raining, it is still very good because:
It obtains the sun’s radiant energy and generates heat and
electricity without polluting the environment.
It is a renewable form of energy and is ecologically acceptable.
Helps us to save money and energy.

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