A. Thesis: As a result of increased environmental pollution, different nations have come up
with strategies to reduce the pollution while meeting the energy needs of their citizens.
One of such strategies is the use of renewable energy, which is the use of energy that is
collected from energy sources that replenished naturally human timescale. In this
exercise, I will discuss these renewable energy sources in detail.
A. Topic sentence: solar energy is one of the major sources of renewable energy, and it
is obtained from sunlight.
B. Purpose: To study the effectiveness of solar energy, how it is applicable, its
advantages and disadvantages.
‘The development of novel solar power technologies is considered to be one
of many key solutions toward fulfilling a worldwide increasing demand for
energy. Rapid growth within the field of solar technologies is
nonetheless facing various technical barriers, such as low solar cell
efficiencies, low performing balance-of-systems (BOS), economic hindrances
(e.g., high upfront costs and a lack of financing mechanisms), and institutional
obstacles (e.g., inadequate infrastructure and a shortage of skilled manpower)’
‘Solar energy, among other renewable sources of energy, is a promising and
freely available energy source for managing long term issues in energy crisis.
Solar industry is developing steadily all over the world because of the high
demand for energy while major energy source, fossil fuel, is limited and other
sources are expensive. It has become a tool to develop economic status of
developing countries and to sustain the lives of many underprivileged people
as it is now cost effective after a long aggressive research done to expedite its
development. The solar industry would definitely be a best option for future
energy demand since it is superior in terms of availability, cost effectiveness,
accessibility, capacity and efficiency compared to other renewable energy
A. Topic sentence: Geothermal energy is a renewable source of energy since its
availability is not affected by lack or source or an increase in the price of
B. Purpose: To study the effectiveness of geothermal energy, how it is
applicable, its advantages and disadvantages.
‘Geothermal energy is counted as a type of renewable energy, which means
the availability is not affected by the lack of source and the increasing price of
fossil oil. Environmentally friendly is also one of the advantages of
geothermal energy. In general, not all countries have the potential of
geothermal energy, only countries traversed by the ring of fire have the
geothermal energy resource.'’
A. Topic sentence: Wind is a source of renewable energy, whereby it is
converted using the turbines into energy.
B. Purpose: To study the effectiveness of wind as source of energy, how it is
applicable, its advantages and disadvantages.
‘Recognized as one of the most mature renewable energy technologies, wind
energy has been developing rapidly in recent years. Many countries have
shown interest in utilizing wind power, but they are concerned about the
environmental impacts of the wind farms. The continuous growth of the wind
energy industry in many parts of the world, especially in some developing
countries and ecologically vulnerable regions, necessitates a comprehensive
understanding of wind farm induced environmental impacts. The
environmental issues caused by wind farms were reviewed in this paper by
summarizing existing studies. Available mitigation measures to minimize
these adverse environmental impacts were discussed in this document.’
A. Topic sentence: Biomass can be an effective source of light and heat when
B. Purpose: To study the effectiveness of biomass as source of energy, how it
is applicable, its advantages and disadvantages.
‘An assessment of biomass resources potential in Jordan for power/heat
generation and biogas production is presented in this paper. The investigation
is based on five crucial requirements toward process sustainability and
production cost. These requirements include biomass analysis and availability,
conversion technologies, optimizing efficiency, reduction of environmental
impact, and political decisions. All of these requirements collectively work
in synergy toward commercial implementation of bioconversion technologies
of biomass into energy. The information obtained in this study is expected to
be useful for both decentralized and centralized wastes based energy planning
by policymakers and industry developers, which can increase the biomass
based renewable energy share to the energy mix. Direct biomass
resources including agricultural residues, animal manure and municipal solid
waste are considered in the analysis.’
A) Solar energy, wind energy and biomass are some of the most commonly used
renewable energy sources worldwide. In addition to being cost effective, they
are clean, available and highly effective.
B) Future areas of research;
a) What are other sources of renewable energy in the world?
b) What renewable energy sources are highly used in the united states of
c) What are the impacts of these sources on the environment, economy and
social wellbeing 0f the citizens?
Al-Hamamre, Zayed, et al. "Wastes and biomass materials as sustainable-renewable energy
resources for Jordan." Renewable and Sustainable Energy Reviews 67 (2017): 295-314.
Alhamid, M. Idrus, et al. "Potential of geothermal energy for electricity generation in Indonesia:
A review." Renewable and Sustainable Energy Reviews 53 (2016): 733-740.
Dai, Kaoshan, et al. "Environmental issues associated with wind energy–A review." Renewable
Energy 75 (2015): 911-921.
Kabir, Ehsanul, Pawan Kumar, Sandeep Kumar, Adedeji A. Adelodun, and Ki-Hyun Kim. "Solar
energy: Potential and future prospects." Renewable and Sustainable Energy Reviews 82
(2018): 894-900. (https://www.sciencedirect.com/science/article/pii/S1364032117313485)
Kannan, Nadarajah, and Divagar Vakeesan. "Solar energy for future world: -A
review." Renewable and Sustainable Energy Reviews 62 (2016): 1092-1105.
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