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It has become relatively a new source of
energy that is arguably the most
importance source of energy for the
future because of it's advantages.
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Solar Power is a renewable resource that
prevents us from depleting it's reserves.
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Solar Power is a renewable resource that
prevents us from depleting it's reserves.
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Its power come from the Sun's heat and
energy.
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The upside to solar power is that it
requires very little maintenance because
there are no moving parts that have to
be controlled. Solar cells can last a
lifetime.
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The biggest disadvantage of Solar Power
is the cost of the equipment to harness
the sun's power.
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Solar energy installation requires a
large
area for the system to be
efficient in providing a source of
electricity. This may be a disadvantage in
areas where space is short, or expensive.
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Pollution can be a disadvantage to solar
panels, as pollution can degrade the
efficiency of photovoltaic cells. Clouds
also provide the same effect, as they can
reduce the energy of the suns rays.
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This certain disadvantage is more of an
issue with older solar components, as
newer designs integrate technologies to
overcome the worst of these effects.
One of the most important effects of
Solar Power is that the sun must be out
and shining fully so the technology can
work to their full effect.
PROCESS OF SOLAR POWER
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Wind can be captured efficiently for free
without worrying of running out.
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After the wind is used in wind turbines, it
does’nt let off any greenhouse gases or any
other type of harmful gases that might harm
the ozone layer.
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The strength of the wind is not constant and it
varies from zero to storm force. This means that
wind turbines do not produce the same amount of
electricity all the time.
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There will be times when they produce no
electricity at all.
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Depending on whether where the Wind turbine is
built, the machine can be limited to the amount of
energy it produces.
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Wind turbines are available in a range of sizes
which means a vast range of people and
businesses can use them.
Wind turbines are noisy. Each one can generate the
same level of noise as a family car travelling at 70
mph.
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Many countries have limited sources now a
days so Wind turbines have a role to play in
both the developed and third world.
Many people feel that the countryside be left
untouched because the Wind turbines are unsightly
structures and not pleasant to look at.
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When wind turbines are being manufactured some
pollution is produced.
Wind turbines are built in small places of land
causing no kind of space problems. Remote
areas that are not connected to the electricity
power grid can use wind turbines to produce
their own supply.
Process of Wind Power
Advantages of Hydro
Power
Disadvantages of Hydro
Power
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once a dam is constructed, electricity can be
produced at a constant rate. If electricity is not
needed, the sluice gates can be shut, stopping
electricity generation.
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Dams are extremely expensive to build and must
be built to a very high standard. The high cost of
dam construction means that they must operate
for many decades to become profitable.
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The water can be saved for use another time
when electricity demand is high.
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Dams are designed to last many decades and so
can contribute to the generation of electricity for
many years / decades.
People living in villages and towns that are in the
valley to be flooded, must move out. This means
that they lose their farms and businesses. In some
countries, people are forcibly removed so that
hydro-power schemes can go ahead.
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The building of large dams can cause serious
geological damage. For example, the building of
the Hoover Dam in the USA triggered a number of
earth quakes and has depressed the earth’s
surface at its location.
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Building a large dam alters the natural water table
level. For example, the building of the Aswan Dam
in Egypt has altered the level of the water table.
This is slowly leading to damage of many of its
ancient monuments as salts and destructive
minerals are deposited in the stone work from
‘rising damp’ caused by the changing water table
level.
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The lake that forms behind the dam can be used
for water sports and leisure activities. Often large
dams become tourist attractions beacuse it is a
sight to see.
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The build up of water in the lake means that
energy can be stored until needed, when the
water is released to produce electricity.
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When in use, electricity produced by dam
systems do not produce green house gases. They
do not pollute the atmosphere.