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This study focuses on the evaluation of the economic viability of various scale wind farms and the assessment for the first time of the wind power potential of 22 locations distributed over Libya. The study utilizes monthly mean wind data collected from the NASA power dataset. The analysis includes determining and analyzing the mean wind speed, frequency distribution, and Weibull distribution scale and shape factors. The results showed that Darnah is the most promising location for insulation wind farms due to the high value of wind speed. Moreover, RETScreen software is used to estimate the energy output and conduct an economic feasibility analysis of the wind farm. Additionally, this paper establishes a relationship between the wake effect, airfoil losses, and the potential for greenhouse gas (GHG) mitigation and the performance of wind farms. The results indicate that wind projects are economically viable when the EWT-DW 52 with a capacity of 500 kW is used. The study findings show that the wake effect is a crucial consideration in wind farm design, and it can be minimized through strategic spacing and turbine design. Furthermore, the accumulation of dirt and debris on wind turbine blades can significantly reduce a wind farm's energy output, causing turbine inefficiency and decreasing the overall energy production. Additionally, the energy production cost from a wind farm is less than that of the electricity tariff and can result in a profitable wind energy project.
This study focuses on the evaluation of the economic viability of various scale wind farms and the assessment for the first time of the wind power potential of 22 locations distributed over Libya. The study utilizes monthly mean wind data collected from the NASA power dataset. The analysis includes determining and analyzing the mean wind speed, frequency distribution, and Weibull distribution scale and shape factors. The results showed that Darnah is the most promising location for insulation wind farms due to the high value of wind speed. Moreover, RETScreen software is used to estimate the energy output and conduct an economic feasibility analysis of the wind farm. Additionally, this paper establishes a relationship between the wake effect, airfoil losses, and the potential for greenhouse gas (GHG) mitigation and the performance of wind farms. The results indicate that wind projects are economically viable when the EWT-DW 52 with a capacity of 500 kW is used. The study findings show that the wake effect is a crucial consideration in wind farm design, and it can be minimized through strategic spacing and turbine design. Furthermore, the accumulation of dirt and debris on wind turbine blades can significantly reduce a wind farm's energy output, causing turbine inefficiency and decreasing the overall energy production. Additionally, the energy production cost from a wind farm is less than that of the electricity tariff and can result in a profitable wind energy project.
Solar energy represents an opportunity to facilitate the operation of Electric Vehicle (EV) charging stations and cover the energy demand of households, contributing to sustainability and reducing carbon emissions. In light of the emerging need for solar energy as a source of electricity generation for building and charging electric vehicles, this study aimed to assess the technical and economic feasibility of using photovoltaic (PV) systems to generate electricity for residential buildings and meet the changing needs of EVs to reduce energy demand on the grid. To achieve this objective, monthly solar radiation data were collected from the NASA power dataset to assess solar radiation levels in the region and determine the suitability and potential for harnessing solar energy for various applications. The results showed that northern Cyprus has exceptionally abundant and consistently stable solar energy resources. The daily energy for selected residential households and the GÜNSEL B9 and J9 electric cars was estimated to determine the capacity of the required PV systems. In addition, information was collected on the prices of solar panels, inverters, energy storage systems, etc., which were taken into account to evaluate the economic viability of the developed systems. The results demonstrate that the use of solar energy to charge EVs and meet the energy demands of households is technically viable and economically feasible. The use of electric cars offers nearly double the advantages compared to conventional fuel-powered ones, making them a more environmentally sustainable option.
Power generation from hybrid renewable energy systems is gaining popularity worldwide, especially in developing countries suffering from electricity crises. Small-scale hybrid wind and solar systems, especially in high-altitude agriculture regions, which may experience electricity shortages during extreme weather conditions, can be critical to achieving sustainability goals and objectives. The latter will be reached by providing clean energy and addressing economic concerns. Accordingly, the main aim of the current paper is to evaluate the techno-economic feasibility of a grid-connected hybrid (vertical axis wind turbine – 2-axis photovoltaic) system at high-altitude agriculture regions (Ardal and Faridan) in Iran for the production of clean energy. To this aim, the wind speed and solar radiation data were analyzed statistically using 13 distribution functions. The results indicate that Generalized Extreme Value produced the best fit for the wind speed and solar radiation data. Furthermore, the purpose of the current work is to evaluate the technical and economic aspects of grid-connected hybrid vertical axis wind turbines as well as PV tracking systems using RETScreen software. The results demonstrate that implementing the proposed system could generate significant amounts of electricity in order to meet the demand for domestic and agricultural applications while ensuring clean energy in line with sustainable development goals. Besides, this study can help integrate renewable energy into the grid and help policymakers facilitate the installation of rooftop small-scale hybrid systems in the future.
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