With the advancement of time and technology,
we are becoming more aware about the impacts which are getting worse and
severe. This is significant that we are shifting from conventional energy
sources to renewables, we know that the conventional energy resources are limited,
and a time will come when they will be finished, so it was need to seek methods
and technology by which we can get energy which can be used again and again
without harming the environment and limited resources.
US EPA says that the highest benefits are
achieved through green energy which includes the wind, solar, biomass and
hydroelectric.
Describing the types of energy first one is
Solar energy, it is the cleanest source of energy, which we get from Sun. Star
produce incredible amount of energy in the process of nuclear fusion, it is
process by which minor atoms are bonded by heat energy and pressure to produce
heavier atoms with radiations, this energy is collected and then converted
usable electricity.
Another energy sources which is powered by Sun
in Wind energy. This is due to the uneven heating of atmosphere is specific
regions. This uneven heating is caused by the topology of our planet and its
spin and orbital movement around sun. further the winds are also controlled by
the surface from which they are passing.
Hydroelectric power is mainly obtained from
the harnessing the energy stored or we can say the force of the flowing water.
This is naturally achieved by gradient and anthropogenically by storing water
as reservoir and increasing energy per meter square. This can be achieved by constructing a dam
and obtain energy.
Biogas is the only fuel we obtained from waste
material, mainly a by-product of an organic matter decomposition. This gas is
obtained from material which include sewerage, kitchen waste and agricultural
waste. These materials area stored in oxygen deficient environment which start
the process of fermentation and produce methane and carbon dioxide and other
gases in minor amount. Methane gas is sold or used at homes for cooking and
electricity generation purpose, remaining material serve as a nutrient rich
fertilizer.
Biomass like biogas is also a source of green
energy which comes from both plants and animals and they contain the stored
energy of Sun in the form of sugar and fibers. When we convert biomass into
usable energy we get biogas liquid, biofuel, and biodiesel.
The benefits obtained from green energy are
reduced carbon emissions, reducing the environmental harm further creating job
opportunities as investing in green technologies and buying green energy.
Sun which is basic source of energy, which
produce enough energy to run the whole planet, but the technologies we use are
outdated and are not efficient, which run on non-renewable energy and depleting
the environment. Green energy is more efficient as compared to traditional
ones. It is time to switch to renewable energy so as to move towards
sustainability and save our planet earth.
According to World bank report, Pakistan has
huge potential of wind and solar power, utilizing only 0.071% of country area
for installation of Photovoltaic cells, country power needs can be fulfilled.
On the other hand, wind is also an abundant resource and country has well known
wind corridors available with avg speed of 7.87 m/s.
Despite a number of successful projects,
Pakistan's installed solar and wind energy capacity is just around 4% of total
capacity, or about 2% of total power, at just over 1,500 Megawatts. But still
projects are in process to shift country’s energy load towards
Sustainability.
Sources:
https://justenergy.com/blog/what-is-green-energy/
About the Author: Meraj Ahsan Qureshi is a young
motivated EHS official , dedicated to aware and create positive change in
society.
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