Wind Energy
Samad Emamgholizadeh; E.Yu. Rakhimov; N.R. Avezova; F.Z. Jamoldinov; M. Ziaii
Abstract
This study analyzes wind speeds across various regions of the Republic of Uzbekistan to assess wind potential at 10 meters above ground level. Utilizing meteorological data from 77 ground-based stations collected between 2000 and 2022 at three-hour intervals, wind power densities were calculated to evaluate ...
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This study analyzes wind speeds across various regions of the Republic of Uzbekistan to assess wind potential at 10 meters above ground level. Utilizing meteorological data from 77 ground-based stations collected between 2000 and 2022 at three-hour intervals, wind power densities were calculated to evaluate wind potential, with average wind speeds determined monthly and annually. Data analysis from 13 regions identified locations with high wind energy potential, computing wind power densities and Weibull distribution parameters for wind speeds. Maps of average annual wind speed and power distribution, along with wind rose diagrams, illustrated predominant wind directions essential for optimal wind turbine placement. The highest average wind speeds were recorded in the Republic of Karakalpakstan, Navoi, Bukhara, Dehkanabad district (Kashkadarya), and Bekabad city (Tashkent region). Notable wind potential was found in Jaslyk district (Karakalpakstan) at 202.01 W/m², Navoi city (94.05 W/m²), and Dehkanabad district (85.33 W/m²). These results suggest that regions with high wind potential offer significant opportunities for efficient wind energy use. A comparison with previous studies on Uzbekistan's wind potential confirmed the accuracy and reliability of the data, indicating a high degree of consistency. This information can guide optimal planning and strategic placement of wind energy installations, furthering the development of “green energy” and enhancing Uzbekistan’s energy security
M.R. Amirrud; M. Shahin
Abstract
Wind energy is considered as a precious replacement for fossil fuels in electricity generation. In this regard, many governments (e.g. Iran) tend to support development of this type of renewable energy source. However, fluctuations in Iran’s economic conditions and uncertainty in available wind ...
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Wind energy is considered as a precious replacement for fossil fuels in electricity generation. In this regard, many governments (e.g. Iran) tend to support development of this type of renewable energy source. However, fluctuations in Iran’s economic conditions and uncertainty in available wind power increase the risk of investment. In this investigation a methodology is used to address the uncertainty in wind conditions using probability of occurrence of minimum wind speed. In addition, a feasibility study is considered for economic assessment of establishing a wind turbine power plant in Kerman province, Iran. A sensitivity analysis is developed to analyze the effect of changes in inflation and currency rates on the project economic viability. Results show that the proposed site enjoys excellent wind power potential with respect to wind power density of 971.4 W/m2 at 100 meters height. Economic analysis indicates that the project is viable when its budget is supplied through governmental resources (providing US dollar at governmental rate). However, sensitivity analysis reveals that the project is no longer viable when its budget is supplied through foreign exchange market (providing US dollar at market currency rate). Therefore, this paper suggests that if government tends to support development of wind energy in Iran, it is necessary to either provide the project budget by governmental resources (4200 T/$) or buy electricity higher than 1391.6 T/kWh (845.6 T/kWh more than current feed-in-tariff). Furthermore, nonlinear relationship between net present value (NPV) and inflation shows that reduction in inflation can significantly improve the investment payoff.