scholarly journals A-RESS new dynamic and smart system for renewable energy sharing problem

2021 ◽  
Vol 7 ◽  
pp. e610
Author(s):  
Imen Toumia ◽  
Ahlem Ben Hassine
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Well Being ◽  
Renewable Energy Resources ◽  
Fossil Plants ◽  
Available Energy ◽  
The World ◽  
And Performance ◽  
Energy Sharing

Energy is at the basis of any social or economic development. The fossil energy is the most used energy source in the world due to the cheap building cost of the power plants. In 2017, fossil fuels generated 64.5% of the world electricity. Since, on the one hand, these plants produce large amount of carbon dioxide which drives climate change, and on the other hand, the storage of existing world fossil resources is in continuous decrease, safer and highly available energy sources should be considered. Hence, for human well-being, and for a green environment, these fossil plants should be switched to cleaner ones. Renewable energy resources have begun to be used as alternatives. These resources have many advantages such as sustainability and environmental protection. Nevertheless, they require higher investment costs. In addition, the reliability of many planted systems is poor. In most cases these systems are not sufficient to ensure a continuous demand of energy for all in needy regions because most of their resources are climate dependent. The main contributions of this research are (i) to propose a natural formalisation of the renewable energy distribution problem, based on COP (Constraint Optimisation Problem), that takes into consideration all the constraints related to this problem; (ii) to propose a novel multi-agent dynamic (A-RESS for Agent based Renewable Energy Sharing System) to solve this problem. The proposed system was implemented and the obtained results show its efficiency and performance in terms of produced, consumed and lost energy.

A Comparative Study on a Built Sun Tracker and Fixed Converter Panels

2012 ◽  
Vol 1 (4) ◽  
pp. 56-69
Author(s):  
Farzin Shama ◽  
Gholam Hossein Roshani ◽  
Sobhan Roshani ◽  
Arash Ahmadi ◽  
Saber Karami
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Large Scale ◽  
Human Society ◽  
Renewable Energy Resources ◽  
Advantages And Disadvantages ◽  
Production And Consumption ◽  
Solar Power Plants ◽  
And Performance ◽  
Optimization And Performance

Producing non-polluting renewable energy in large scale is essential for sustainability of future developments in industry and human society. Among renewable energy resources, solar energy takes a special place because of its free accessibility and affordability. However, the optimization of its production and consumption processes poses important concerns, essentially in the affordability issue. This paper investigates several optimization and performance issues regarding solar panel converters using two-axis controlled solar tracer that has been practically implemented in comparison with fixed converter panels. Results shown in tables and graphs demonstrate clearly the advantages and disadvantages of the methods. Based on these results, large scale solar power plants are being suggested to be equipped with similar devices.

scholarly journals Exploring Renewable Energy Resources Using Remote Sensing and GIS—A Review

Resources ◽  
2019 ◽  
Vol 8 (3) ◽  
pp. 149 ◽  
Author(s):  
Avtar ◽  
Sahu ◽  
Aggarwal ◽  
Chakraborty ◽  
Kharrazi ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Renewable Energy ◽  
Case Studies ◽  
Fossil Fuels ◽  
Energy Resource ◽  
Remote Sensing And Gis ◽  
Energy Resources ◽  
Geographical Information ◽  
Renewable Energy Resources ◽  
The World

Renewable energy has received noteworthy attention during the last few decades. This is partly due to the fact that fossil fuels are depleting and the need for energy is soaring because of the growing population of the world. This paper attempts to provide an idea of what is being done by researchers in remote sensing and geographical information system (GIS) field for exploring the renewable energy resources in order to get to a more sustainable future. Several studies related to renewable energy resources viz. geothermal energy, wind energy, hydropower, biomass, and solar energy, have been considered in this paper. The focus of this review paper is on exploring how remote sensing and GIS-based techniques have been beneficial in exploring optimal locations for renewable energy resources. Several case studies from different parts of the world which use such techniques in exploring renewable energy resource sites of different kinds have also been included in this paper. Though each of the remote sensing and GIS techniques used for exploration of renewable energy resources seems to efficiently sell itself in being the most effective among others, it is important to keep in mind that in actuality, a combination of different techniques is more efficient for the task. Throughout the paper, many issues relating to the use of remote sensing and GIS for renewable energy are examined from both current and future perspectives and potential solutions are suggested. The authors believe that the conclusions and recommendations drawn from the case studies and the literature reviewed in the present study will be valuable to renewable energy scientists and policymakers.

A Comparative Study on a Built Sun Tracker and Fixed Converter Panels

2013 ◽  
pp. 335-347
Author(s):  
Farzin Shama ◽  
Gholam Hossein Roshani ◽  
Sobhan Roshani ◽  
Arash Ahmadi ◽  
Saber Karami
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Large Scale ◽  
Human Society ◽  
Renewable Energy Resources ◽  
Advantages And Disadvantages ◽  
Future Developments ◽  
Production And Consumption ◽  
Solar Power Plants ◽  
And Performance

Producing non-polluting renewable energy in large scale is essential for sustainability of future developments in industry and human society. Among renewable energy resources, solar energy takes a special place because of its free accessibility and affordability. However, the optimization of its production and consumption processes poses important concerns, essentially in the affordability issue. This paper investigates several optimization and performance issues regarding solar panel converters using two-axis controlled solar tracer that has been practically implemented in comparison with fixed converter panels. Results shown in tables and graphs demonstrate clearly the advantages and disadvantages of the methods. Based on these results, large scale solar power plants are being suggested to be equipped with similar devices.

scholarly journals HOW COULD RENEWABLE ENERGY RESOURCES BRIDGE THE GAP IN NIGERIA’S ENERGY SECTOR?

2020 ◽  
Vol 7 (11) ◽  
pp. 9-16
Author(s):  
Gift Nwabueze
Keyword(s):  
Renewable Energy ◽  
Cost Estimation ◽  
Power Plants ◽  
Fossil Fuels ◽  
Estimation Method ◽  
Energy Resources ◽  
Renewable Energy Resources ◽  
Fiscal Incentives ◽  
Energy Projects ◽  
The Cost

This paper presents renewable energy resources development as a means of abating the shortfall in electricity generation in Nigeria. Levellized Bus-bar Cost Estimation method is used to carry out cost analysis of various power generation technologies by comparing their levellized costs. Carbon Emissions Pricing theory is also utilized to show that the cost per mega watt of renewable energy resources power plants can be comparable to their fossils counterpart when price is assigned to the emissions that result from using fossil fuels. Finally, government’s participation in time bound renewable energy projects, as well as financial and fiscal incentives are identified as actions that will encourage private sector investments in renewable energy development, which has a stimulating effect on the larger economy.

scholarly journals RENEWABLE ENERGY: WORLD DEVELOPMENT TRENDS AND UKRAINE

2021 ◽  
Author(s):  
Vita Zaharii ◽  
Tamila Kovalchuk
Keyword(s):  
Renewable Energy ◽  
Power Plants ◽  
Fossil Fuels ◽  
Renewable Energy Sources ◽  
Energy Sector ◽  
Energy Sources ◽  
The Sun ◽  
Stage Of Development ◽  
Positive Tendency ◽  
The World

The article considers the trends in the development of renewable energy in the world and in Ukraine. It is proved that renewable energy is an important and promising energy sector in the world. It is shown that at the present stage of development, all civilized countries are developing their economies through the use of renewable energy sources, which are gradually displacing the old power plants using exhaustive fossil fuels, which pollute the atmosphere. The history of renewable energy development is revealed. The investment attractiveness of this energy sector in the countries of the world is characterized. On the basis of statistical data and preliminary studies of scientists, modern structural changes in the investment market of renewable energy in the world were evaluated. It is shown that Ukraine is part of European dozens of investments in green energy. The volume of supply of primary energy in the world and Europe, the power of renewable energy in leaders, regions of the world and Ukraine is presented. A review of the current state of renewable energy in developed countries and Ukraine has been carried out. Quantitative characteristics for different renewable energy sectors are analyzed: hydro, solar and wind power and other. Examples of the largest solar, hydroelectric power plants on the planet and Ukraine are given. It is shown that in the countries of the world and Ukraine there is a powerful potential and there is a positive tendency to more intensive use of renewable energy sources. It has been found that in 2020, for the first time in history, the share of RES in the structure of electricity in Europe has exceeded the proportion of fossil fuels due to the expansion of energy from the sun and the sun. The development of renewable energy in the planet also promotes the introduction in many countries and in Ukraine "Green Tariffs" and "Green" for electricity. It is positive that Ukraine has joined the European Energy Community and undertaken a joint regulatory policy with EU countries, develop and implement measures for renewable energy in the country. The prospects for the development of renewable energy sources in the countries of the world and Ukraine are determined.

CUSTOMER EMPOWERMENT STRATEGY AND SHAPING MARKETS IN THE PRODUCTION OF ELECTRICITY

2019 ◽  
Vol 68 (1) ◽  
pp. 22-31
Author(s):  
Ivan Krnić
Keyword(s):  
Renewable Energy ◽  
Carbon Dioxide Emissions ◽  
Power Plants ◽  
Fossil Fuels ◽  
Credit Rating ◽  
Renewable Energy Sources ◽  
Energy Sources ◽  
Energy Prices ◽  
The World ◽  
Energy Companies

A large number of energy companies in the world today a faced with global transformative trends which devastatingly affect their business results. Therefore, energy companies in the world were very slow in investing and adopting renewable energy sources and become significantly overcapacitated by coal and gas fired power plants which are now unprofitabile due to low marginal costs of renewables and their priority dispatching into a power system. Also increasing the share of renewable energy sources in the structure of electricity generation, the decline in primary energy prices (fossil fuels) the stagnation of consuption and the surplus of supply in relation to electricity demand caused a drop in wholesale electricity prices by half compared to 2008. Furthemore, the operation of coal fired power plants is burdened with carbon dioxide emissions. As a result, there has been a significant reduction in revenues, falling stock values andthe collapse of credit rating of many energy companies in the world. This article analyzes the implementation of the strategy of empowering customers and shaping markets that the E.ON Group has carried out as a „response“ to global transformative trends in the energy market environment by which the former company was divided into two less dynamic and more focused companies into a new or conventional energy world. This strengthens the competitiveness of all previous business activities due to stronger focus on the development of necessary skills and process. Furthemore, from on investor perspective it has been shown that the risk profiles associated with conventional energy production differ from those related to the „new“ energy world, ie the activities covered by the business portfolio of the E.ON Group, and the activities covered by the business portfolio of the Uniper Group attract different types of investors.

Renewable energy selection based on a new entropy and dissimilarity measure on an interval-valued neutrosophic set

2021 ◽  
pp. 1-18
Author(s):  
ShuoYan Chou ◽  
Truong ThiThuy Duong ◽  
Nguyen Xuan Thao
Keyword(s):  
Decision Making ◽  
Renewable Energy ◽  
Membership Function ◽  
Fossil Fuels ◽  
Multiple Criteria Decision Making ◽  
Clean Energy ◽  
Dissimilarity Measure ◽  
Neutrosophic Set ◽  
Trade Offs ◽  
And Performance

Energy plays a central part in economic development, yet alongside fossil fuels bring vast environmental impact. In recent years, renewable energy has gradually become a viable source for clean energy to alleviate and decouple with a negative connotation. Different types of renewable energy are not without trade-offs beyond costs and performance. Multiple-criteria decision-making (MCDM) has become one of the most prominent tools in making decisions with multiple conflicting criteria existing in many complex real-world problems. Information obtained for decision making may be ambiguous or uncertain. Neutrosophic is an extension of fuzzy set types with three membership functions: truth membership function, falsity membership function and indeterminacy membership function. It is a useful tool when dealing with uncertainty issues. Entropy measures the uncertainty of information under neutrosophic circumstances which can be used to identify the weights of criteria in MCDM model. Meanwhile, the dissimilarity measure is useful in dealing with the ranking of alternatives in term of distance. This article proposes to build a new entropy and dissimilarity measure as well as to construct a novel MCDM model based on them to improve the inclusiveness of the perspectives for decision making. In this paper, we also give out a case study of using this model through the process of a renewable energy selection scenario in Taiwan performed and assessed.

scholarly journals A SWOT Analysis Approach for a Sustainable Transition to Renewable Energy in South Africa

2021 ◽  
Vol 13 (7) ◽  
pp. 3933
Author(s):  
Solomon E. Uhunamure ◽  
Karabo Shale
Keyword(s):  
Climate Change ◽  
South Africa ◽  
Renewable Energy ◽  
Regional Integration ◽  
Power Plants ◽  
Swot Analysis ◽  
Climatic Conditions ◽  
Policy Implications ◽  
Analysis Approach ◽  
Renewable Energy Resources

South Africa is been faced with erratic power supply, resulting in persistent load shedding due to ageing in most of its coal-fired power plants. Associated with generating electricity from fossil fuel are environmental consequences such as greenhouse emissions and climate change. On the other hand, the country is endowed with abundant renewable energy resources that can potentially ameliorate its energy needs. This article explores the viability of renewable energy using the strengths, weaknesses, opportunities and threats (SWOT) analysis approach on the key renewable potential in the country. The result indicates that geographic position, political and economic stability and policy implementation are some of the strengths. However, Government bureaucratic processes, level of awareness and high investment cost are some of the weaknesses. Several opportunities favour switching to renewable energy, and these include regional integration, global awareness on climate change and the continuous electricity demand. Some threats hindering the renewable energy sector in the country include land ownership, corruption and erratic climatic conditions. Some policy implications are suggested based on the findings of the study.

Flow and Performance Characteristics of a Double-Blade Hydrofoil

2012 ◽  
Vol 433-440 ◽  
pp. 7218-7222 ◽  
Author(s):  
Tahir Yavuza ◽  
Birol Kilkis ◽  
Emre Koc ◽  
Ozgur Erol
Keyword(s):  
Wind Power ◽  
Fossil Fuels ◽  
Clean Energy ◽  
Performance Characteristics ◽  
Energy Resources ◽  
Environmental Crisis ◽  
Operational Effectiveness ◽  
Hydrokinetic Turbines ◽  
The World ◽  
And Performance

While our planet is rapidly approaching an environmental crisis under the dominant use of depleting fossil fuels, the need for exploiting all forms of new, small carbon foot-print, renewable, and clean energy resources are increasing in the same proportion. Therefore, the need for exploring all types of clean energy resources that the world has- some of which might have not attracted sufficient attention before- is essential in order to implement sufficient, efficient, and widely use all them. In this respect, operational effectiveness of the wind and hydrokinetic turbines depend on the performance of the airfoils chosen. Using double-blade airfoils in the wind and hydrokinetic turbines, minimum wind and hydrokinetic flow velocities to produce meaningful and practical mechanical power reduces to 3- 4 m /s for wind turbines and 1-1.5 m/s or less for hydrokinetic turbines. Consequently, double-blade hydrofoils may re-define the potentials of wind power and hydrokinetic power of the countries in positive manner.

scholarly journals The Impact of Lack of Clean Cooking Fuels on Sustainable Development in Developing Countries

2018 ◽  
Author(s):  
Ifeoluwa Garba ◽  
Richard Bellingham
Keyword(s):  
Sustainable Development ◽  
Developing Countries ◽  
Fossil Fuels ◽  
Energy Use ◽  
Business Models ◽  
Clean Energy ◽  
Well Being ◽  
The World ◽  
Cooking Fuels ◽  
The Impact

Access to energy is crucial in tackling many of the current global development challenges that impact on people’s economic, health and social well-being as well as the ability to meet the commitments of reducing carbon emissions through clean energy use. Despite increased attention from multiple governments and agencies, energy poverty remains a serious sustainable development issue in many developing countries. To date, most research have focused on general access to electricity and the generation of clean energy to replace fossil fuels, failing to address the lack of basic access to clean energy for cooking and heating. More people in the world lack access to clean cooking fuels than to electricity. This issue is one aspect of a broader research which investigates the impacts of optimized energy policy and energy business models on sustainable development in developing countries.

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