scholarly journals CURRENT TRENDS IN RENEWABLE ENERGY: AN OVERVIEW

2020 ◽  
pp. 512-541
Author(s):  
Paul F. Meier

This concluding chapter summarizes some of the information presented for the twelve different energy technologies examined in the book. The first section explores current trends in energy and some of the driving forces affecting these trends. The second section examines the electric vehicle, the bridge that can connect the electric sector with the transportation sector. The third section examines the potential for reducing carbon dioxide (CO2) emissions in the United States by the use of renewable fuels. Following this, a summary of proven and potential reserves is presented for both nonrenewable and renewable energy types. Finally, a summary is presented for the land and energy footprint of each technology.


Author(s):  
Mohammed–Hasham Azam ◽  
Mohammed Abushammala

The Sultanate of Oman is a fast growing region and has fifth largest economy in the GCC regions. The oil and gas sectors are the main promoters of Oman’s economy. The reservoirs of natural resources are insufficient to satisfy for a continuation of the current trends. The electricity sector of Oman mostly depends on natural gas: 97.5% and Diesel: 2.5%.  Renewable energy has no major role in the country’s energy supply despite of having valuable wind and solar resources. This review paper tends to bring forward the current and future renewable plans and situations of solar and wind energy in Sultanate of Oman. Therefore this objective is achieved by carrying out literature review of the importance of the wind and solar sources according to the conditions of Oman and by visiting the existing renewable energy plants.


2021 ◽  
Author(s):  
Sandylove Afrane ◽  
Jeffrey Dankwa Ampah ◽  
Emmanuel Mensah Aboagye

Abstract Several countries across the African continent have been challenged with energy crisis for decades. A growing number of studies have identified renewable energies as a sustainable way for Africa to address its persisting energy situation, as the continent has in abundance some of the popular renewable energy sources. However, little has been reported in the body of literature about this growing research area's global mapping and knowledge domain. By bridging this gap in research, it becomes easy to identify which authors, countries, organizations/institutions are likely to produce research that paves the way for the easy penetration of renewable energy into the existing African energy mix. Moreover, potential investors in the continent’s renewable energy can easily identify the most popular and advantageous renewable energy to invest in. Thus, the current study seeks to achieve these aims by conducting a bibliometric analysis on 1037 publications extracted from the Web of Science Core Collection using the VOSviewer software. The results from the study revealed a growing interest in Africa’s renewable energy, with a 200% increase within the last five years. The most productive journal, institution, and country in this subject have been Energy Policy, University of Cape Town, and South Africa, respectively. Research hotspots under different study themes also revealed that ‘solar energy,’ ‘CO2 emissions,’ and ‘rural electrification’ are hot issues that have gained maximum attention over the years. Results from the current study provide a paradigm for the development of Africa’s renewable energy sector.


2019 ◽  
Vol 8 (1) ◽  
pp. 13-17
Author(s):  
Ondrej Beňuš ◽  
Dominika Čeryová

Abstract Renewable energy production is one of key actions undertaken by the EU to lower its dependency on energy imports from third countries. Renewable energy is not competitive compared to fossil fuels at this moment. Under these circumstances, there is a need for an effective legal regulation. The EU has set main targets relating renewable energy use in the directive (EU) 2018/2001. Slovak policymakers have recognized these new targets. The main objective of the paper is to examine the latest changes to the Slovak legal regulation of the renewable energy production with focus on electricity production. We analyse changes made by the amendment of the Act No. 309/2009 Coll. and provide a short explanation of new instruments.


Author(s):  
Juliette Ugirumurera ◽  
Zygmunt J. Haas

Current trends show that renewable energy production costs continue to decrease with time, so that renewable energy sources (RES) are becoming more suitable as electricity sources. In addition to their environmental benefits, RES are especially appropriate for remote areas, where the expansion of existing power grid is impractical and fuel transportation for thermal generators is too expensive. In this regard, our work studies the optimal capacity sizing for a completely green village (CGV), which is an isolated residential microgrid (MG) whose power is entirely generated by RES. In particular, we consider a neighborhood composed of smart homes that contain programmable appliances, whose operations can be interrupted or automatically scheduled in time. Though there are many works in literature that investigate MG optimal capacity sizing, to our knowledge, our work is the first that utilizes the scheduling of programmable appliance to minimize MG investment costs. To establish the effectiveness of our method, we compare an optimal MG capacity sizing algorithm that utilizes appliances’ programmability (Opt-P) with an algorithm that places appliances into operation as soon as they are ready without shifting in time or preempting their operation (NoSch-P). Our simulation results show that Opt-P reduces the investment cost by at least 42% compared to NoSch-P, when the ratio between the energy storage investment cost per kWh and the RES’ investment cost per kW is greater or equal to 10.


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