Wind Energy: Progress and Potential

Researchers have found that despite a wide range of renewable energy sources in sub-Saharan Africa (SSA), renewable energy pricing policies have focused extensively on metered electricity energy, an early source of renewable energy. Supply, access, and regulation of price for metered electricity energy is mostly controlled by the governments across SSA. There is an increasing use of other renewable energy sources including portable electricity, solar power, and wind power. However, in SSA, the pricing for domestic renewable domestic renewable power such as portable electricity, rechargeable cookstoves, and portable solar power sources are left to the market to legislate, with energy prices dependent on forces of demand and supply and seldom on clear scientific models. This commercially focused energy market means businesses operating in the energy industry are more interested in profits and set prices relative to their market perceptions. The main problem with the energy market in SSA is the lack of a participatory approach where customers, businesses, the government, and other stakeholders are involved in the pricing for energy. We further note that lack of a participatory approach in energy pricing is a major challenge in uptake and demand for the domestic renewable energy sources. Through a systematic literature review, including a review of peer-reviewed journals, documents from energy utility companies, and published information on the websites for energy companies, this review analyzes the current application of energy price modeling and hypothesizes that mobile technology and a participatory pricing approach can improve pricing for domestic renewable power. Our initial literature review showed that energy price modeling had received little attention in SSA, especially for domestic renewable power energy sources. This paper, therefore, fills this gap by using a systematic literature review to consolidate knowledge on how energy price modeling has been applied in the SSA context. The systematic literature review results reveal four commonly used models: time series, artificial neural network, hybrid iterative reactive adaptive, and hybrid models. These energy pricing models are mainly applied to metered electricity power, the predominant source of energy in SSA. The literature hypothesizes that applying mobile technology to energy pricing and a participatory approach involving the consumers and energy supply businesses can move SSA closer to transitioning to renewable energy. Although other factors have hindered this transition, a participatory energy pricing approach incorporating relevant pricing models and market information creates potential solutions to these challenges. In the discussion, we hypothesize that a participatory approach to price modeling with the incorporation of mobile technology can be used at the household level to improve energy decision-making. For this to work, energy price modeling for domestic renewable sources should be simplified, user-friendly, and accessible to households. In conclusion, we recommend that SSA governments develop a more holistic view of energy price modeling to better harness the potential for domestic renewable energy sources.

Exponential growth in population, economic growth, rapid Industrialization to become a developed Nation, increasing domestic demand of energy and drying up of conventional sources of energy has led us to look for an alternative source of energy. Till date the main source of energy required for growth and development is coal, which is exhaustible, non renewable as well as harmful for the environment. Hence, we are forced by changing environment to move towards green energy which is the solution to the emerging problem of exhausting conventional energy sources and increased carbon footprints. It is environment friendly too for human race to pass on to next generation for continued development. Renewable energy is also called ?Green Energy? or ?Clean Energy? because it does not pollute the environment. As we all are aware that energy can neither be created nor be destroyed rather it transforms from one form to another. Green energy includes solar energy, wind energy, biogas energy etc which are already existing in different form in environment. Rajasthan is endowed with abundant green energy potential to transform it in form useful for the state growth and development. However, there is scarcity of carbon sources in state. Many developed countries are behind India in harnessing the potential of green energy for sustainable development. Rajasthan, ranked first with 19% share of installed renewable energy capacity in India. This paper provides a brief overview of the availability and current status of renewable energy in Rajasthan and its role in sustainable development of state which is taking Rajasthan from energy deficit state to energy surplus state among other states of our country. It will also help the researchers and investors to explore the vast possibility of implementation of modern technology to harness abundant green energy and to map out for the expansion of green energy generation at faster pace to reduce the carbon foot print and coal dependency.

Wind energy has for many years been the fastest developing energy source. This is most easily demonstrated by some numbers. In 2006 a total of about 7.6 GW of new wind energy capacity was installed in Europe, an increase of more than 20% over the year before. Europe's cumulative wind power capacity has now reached more than 50 GW. At the beginning of 2007, the European Commission published its new energy strategy, which recommends a 20% target for the share of renewable energy in the EU by 2020. New initiatives have also been launched in the U.S. and Asia to comply with the need for a reduction in the emissions of CO2 and to create a cleaner environment based on renewable energy. Since 1980 the average size of wind turbines has grown by a factor of 100 from 50 kW to today's 5 MW machines. This enormous increase in size would not have been possible without the involvement of well-educated engineers and scientists. Research institutions and universities have contributed significantly to this development by providing basic knowledge as well as sophisticated software and measuring campaigns. In order to comply with the fast development in wind turbine technology there is a growing need for both well-educated scientists and for a further development of sophisticated predictive tools. For many years progress in technology development was presented at the European Wind Energy Conference (EWEC) conference organized by the European Wind Energy Association (EWEA). Because of the maturity of the industry and the many important topics involved in the continued development of wind power, the relative share of the technical and scientific sessions at EWEC has decreased dramatically. Hence it was desirable to find an alternative forum for the exchange of ideas and techniques within more specialized topics. As a consequence the European Academy of Wind Energy (EAWE) was created in 2003 in order to support education and research. It is the intention of this special topics conference to bring together scientists and engineers working in the fields of aerodynamics, aeroelasticity, aeroacoustics, aeroelastic control, wind conditions and wind farms.The first conference entitled `The Science of making Torque from Wind' was organized by DUWIND and held at Delft University, 19-21 April 2004. Owing to the great success of this conference where more than 60 papers were presented, we decided to follow it with a similar conference at the Technical University of Denmark (DTU) in Lyngby. It is our hope that others will take up the idea and continue this series of conferences. An explicit objective of the conference is to meet the high standards applied in several other branches of science and technology. The EAWE has the responsibility for the scientific quality of the content. All papers presented at the conference have had an abstract review as well as a full paper review by at least two reviewers. Out of the approximately 120 submitted abstracts, 86 papers were finally approved to be presented at the conference. It is expected that many of the papers will subsequently be published in scientific journals. Toward that end, the editors of Wind Energy and Journal of Solar Energy Engineering have expressed their interest in letting the most promising papers be subjected to a second review, for the purpose of having them published as journal papers. The EWEA staff is thanked for organizing the PR on the conference and the EAWE board members for valuable help in the reviewing process and for delivering session chairmen. Staff members at the Department of Mechanical Engineering at DTU and Risø were responsible for the organization. Special thanks go to DTU for providing lecture and meeting rooms, and to LM Glasfiber, Vestas Wind Systems and Siemens Wind Power for financial support. Jens Nørkær Sørensen, Conference Chairman 21 June 2007

Objective: To highlight the various potential health problems women and others exposed to gases/substances emitted from domestic sources of energy are at risk of. A review of the literature on the health problems associated with use of various forms of energy fuels was done. Review: Not much literature has emanated from Nigeria on the health effects on users of domestic energy. Sources of domestic energy in Nigeria include coal; firewood; kerosene; liquefied natural gas (LNG); electricity and sawdust. The gaseous and other chemical emissions by these materials in the course of energy production have been recorded as having adverse effects on the health of the users and other exposed persons. In Nigeria, the bulk of the domestic chores during which people are exposed to the effects of these gases, are done by women. Conditions such as cooking in overcrowded areas predispose to the different health problems. With a source such as coal, users in overcrowded areas experience health problems such as asthma, chronic cough, eye irritation, headache and others. Conclusion: The health effects of exposure to emissions from domestic energy sources are felt mostly by women. Different levels of risks are associated with different energy fuels with coal the most hazardous. Most of the damage is to the respiratory system. There is a need for clinical and epidemiological data to be collected and collated to study the problem. Key Words: Energy use, Pollutants, Environmental damage Orient Journal of Medicine Vol.16(2) 2004: 20-23

Fossil fuels are depleting at very fast rate and will have shortages in near future. Also, prices of fuels increase day-by-day, demands of renewable energy sources increases for electrical power generation. Wind energy is available in nature free of cost and in abundant form, so is an excellent option for generation of electric power through wind turbine technology. Rapid increase in global energy requirement resulted in considerable attention towards renewable energy sources as there are shortages of fossil fuels. Wind energy is one of the clean and potential renewable energy resources. It is free of cost and available everywhere abundantly on the earth. VAWT is one of the important options to produce sufficient electricity for household’s application in rural and urban areas as it works independently irrespective of the direction of wind. Savonius turbine is a vertical axis wind turbine which is drag type and characterized as cheaper, simple in construction and can operate at low speed. This makes it suitable for generating electrical power for household application at rural and urban areas. This research work contains computational fluid dynamics (CFD) analysis of different models of Savonius wind turbines at constant wind speed of 10.5 m/s to determine the power output of the turbine and the effects of various design parameters like blade profile, number of blades, aspect ratio and swept area on the performance of power coefficient (Cp) of the turbine. It was found from CFD analysis that, the power output mainly depends on swept area of the blade and hence full profile blade turbine has more power coefficient than the cut blade profile turbine.

This paper presents a review of the recent advances of the wind power. The wind power is a very clean and renewable alternative to the burning fossil fuels and has no impact on the environment. The energy scientists are in knowledge of the world needs to increase the clean energy sources. The impact of the classical process for generating the power on the environment has created a need for a strategic planning and development of the clean and sustainable power systems of generation. This paper focuses on the recent aspects of the wind power and the technology including several technical issues.

The Industrial Revolution created a significant demand for energy, primarily relying on non-renewable resources such as petroleum, natural gas, and coal. While these resources have driven human progress, they have also caused severe environmental issues, including ozone depletion, increased carbon emissions, deforestation, and geopolitical tensions. Addressing these challenges requires the development of stable and sustainable renewable energy sources. The commitment to reducing carbon emissions under the Paris Agreement reflects decades of global efforts to advance renewable energy. Despite advancements in solar and wind energy, their inherent intermittency and dependence on climate conditions limit their ability to fully replace traditional energy sources. Green hydrogen, known for its high energy density and carbon-neutral extraction process, is considered a promising, sustainable renewable energy source. Its production results in only water and heat. By analyzing various research literature on seawater electrolysis, this study statistically and graphically presents key factors, highlighting crucial trends in advancing seawater hydrogen production technology. This research provides important insights and directions for the future development of seawater hydrogen production. Highlight 1. This field primarily focuses on chemistry, and the lack of integration with experts in electricity or electromagnetism may affect the efficiency and stability of the electrolysis process. 2. Research related to seawater hydrogen production has been increasing year by year, indicating growing global attention in this field. 3. Break throughs are making hydrogen production cheaper, and the fast growth of hydrogen energy use is speeding up our progress toward net-zero carbon emissions. At the same time, it`s helping to ease energy crises caused by geopolitical issues.

Economic analysis of 26 kW solar powered system for a commercial building in India

This research provides an overview of Iraq's renewable energy prospects. One of the most important sorts of renewable energy resources in the world is wind energy. Wind energy is considered environmentally beneficial and very economical. These benefits are cited as the primary reasons for using wind turbines to generate power across the world. An assessment of the country's profile has been made, taking into consideration existing energy generation, crude oil production at current levels, gas flares that generate CO2 emissions, as well as industry, human activities, and grid electricity distribution. Iraq has power shortages, and several obstacles must be solved in order to satisfy projected increases in electrical demand. This analysis discovered that solar, wind, and biomass energy are now underutilized, but that they might play a key part in Iraq's sustainable energy future. Wind energy, for example, has become an important aspect in reducing pollution and improving air quality. The usage of tiny wind turbines to generate power under Iraqi meteorological conditions is examined in this study. The research evaluates the wind system that is necessary to provide electric power for highway services including lighting and parking. According to the study's findings, wind turbines can be used effectively for roadway illumination. The efficiency of a maximum wind turbine is determined by the blade design. For the planned use, the wind speed reported in Iraqi winter is pretty acceptable. Alternative and sustainable energy, wind energy, Iraqi climate are all index terms. The Iraqi government recently joined the Paris Climate Agreement and is now starting to encourage the participation of small and large consumers to generate electricity from renewable energy sources. This article analyzes the hybrid electrical system of solar and wind energy for the city of Dohuk, the northern part of Iraq, to find out the feasibility of this system compared to the local electrical network. First, access to solar and wind energy resources in Dohuk were ensured.

Advancements in materialistic life styles and increasing awareness about adverse climatic changes and its negative effects on human life have been the driving force of finding new and clean sources of energy. Wind power has become technologically mature and commercially acceptable on global scale. However, fossil fuels have been the major sources of energy in most countries, renewable energy (particularly wind) is now booming worldwide. To cope with this wind energy technology, various related aspects have to be understood by the scientific, engineering, utility, and contracting communities. This study is an effort towards the understanding of the (i) wind turbine blade and tower structural stability issues, (ii) turbine blade and tower failures and remedial measures, (iii) weather and seismic effects on turbine blade and tower failures, (iv) gear box failures, and (v) turbine blade and tower failure analysis tools.

Potential of renewable energy systems in China

Integrating sustainable renewable energy sources into electric vehicle (EV) charging is critical to reducing carbon emissions and promoting environmental sustainability. This integration holds tremendous potential for enhancing affordability, sustainability, and grid resilience. By incorporating renewable energy sources like solar, wind, and hydroelectric power into EV charging stations, it becomes possible to produce clean and sustainable energy on-site, reducing the carbon footprint associated with transportation. This book chapter explores the optimisation of renewable energy integration in EV charging stations, focusing on key challenges, strategies, and future directions. The chapter highlights the need for effective energy storage solutions and smart charging algorithms to balance supply and demand by examining the intermittent nature of renewable sources like solar and wind power. The importance of the strategic placement of charging stations near renewable energy sources and the role of vehicle-to-grid (V2G) technologies in enhancing energy flexibility.

Wind power is starting to make a significant contribution to the decarbonisation of our energy systems throughout the world, though much remains to be done. Although, wind turbine technology is seen as commercially viable and, in many cases, now, subsidy-free, there are still a number of basic grand challenges in wind energy that the scientific and industrial community must address [1]. These include: providing a better understanding of atmospheric flows and how they interact with windfarms; an improved understanding of the aerodynamic, structural and hydrodynamic behaviour of wind turbines; and how to integrate ever greater volumes of wind energy into our electrical grids.Europe has become very much a centre for the scientific and industrial expertise to address these challenges. To provide a focus for academic research in wind energy, the European Academy of Wind Energy (EAWE) was founded. The Academy has become arguably the world’s leading association of academic institutes active in wind energy. Amongst its many activities, EAWE founded a conference where leading researchers from around the world could present their work related to wind turbine technology. The conference was called The Science of Making Torque from Wind (or TORQUE, for short) and its inaugural edition was held in Delft in 2004. The conference has gone from strength to strength and is probably the largest scientific conference devoted to wind energy in the world. History came full circle and the eighth edition, TORQUE 2020 was due to be held in Delft again in the spring of 2020. Unfortunately, the COVID-19 pandemic meant that the hosting of a physical conference was no longer possible, so the host, the TU Delft Wind Energy Institute at the Delft University of Technology moved the conference fully online.Following the call for three-page abstracts, more than 500 submissions were made and, after a two-stage per review process by over 150 reviewers, nearly 320 full papers were accepted for publication in the proceedings. The online conference consists of three plenary session, 28 parallel oral sessions and five poster sessions. Due to the online nature of the conference, oral presentations are to be kept short (eight minutes each) and plenary keynotes are restricted to 15 minutes to allow plenty of time for discussion. All poster presenters are allowed a recorded one-minute pitch which can be accessed during the online poster sessions.

Trends, Prospects, and R&D Directions in Wind Turbine Technology

The rapid expansion of wind power gives rise to a number of challenges for power system operators and electricity market participants. The key operational challenge is to efficiently handle the uncertainty and variability of wind power when balancing supply and demand in ths system. In this report, we analyze how wind power forecasting can serve as an efficient tool toward this end. We discuss the current status of wind power forecasting in U.S. electricity markets and develop several methodologies and modeling tools for the use of wind power forecasting in operational decisions, from the perspectives of the system operator as well as the wind power producer. In particular, we focus on the use of probabilistic forecasts in operational decisions. Driven by increasing prices for fossil fuels and concerns about greenhouse gas (GHG) emissions, wind power, as a renewable and clean source of energy, is rapidly being introduced into the existing electricity supply portfolio in many parts of the world. The U.S. Department of Energy (DOE) has analyzed a scenario in which wind power meets 20% of the U.S. electricity demand by 2030, which means that the U.S. wind power capacity would have to reach more than 300 gigawatts (GW). The European Union is pursuing a target of 20/20/20, which aims to reduce greenhouse gas (GHG) emissions by 20%, increase the amount of renewable energy to 20% of the energy supply, and improve energy efficiency by 20% by 2020 as compared to 1990. Meanwhile, China is the leading country in terms of installed wind capacity, and had 45 GW of installed wind power capacity out of about 200 GW on a global level at the end of 2010. The rapid increase in the penetration of wind power into power systems introduces more variability and uncertainty in the electricity generation portfolio, and these factors are the key challenges when it comes to integrating wind power into the electric power grid. Wind power forecasting (WPF) is an important tool to help efficiently address this challenge, and significant efforts have been invested in developing more accurate wind power forecasts. In this report, we document our work on the use of wind power forecasting in operational decisions.