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Due to fast industrial expansion and the increasing population in Vietnam, this country is confronting a mounting lack of energy. While this country has considerable renewable energy (RE) potentials, including wind, solar, biomass, and hydropower sources, it has yet to exploit them entirely because of a lack of proper planning. This research aimed to find and assess solutions for encouraging RE growth in Vietnam. RE development solutions were formulated through SWOT analysis and evaluated in terms of their social, economic, and environmental dimensions. The SWARA approach weighed the strategy evaluation criteria. The most influential sub-criteria were initial investment cost, reduction of adverse environmental impacts, and natural capacity of the region, with weights of 0.155, 0.127, and 0.114, respectively. Strategy evaluation was performed using the Gray ARAS, and the results were validated with the Gray COPRAS, the Gray TOPSIS-G, and the Gray MABAC. In the strategy ranking, the top strategy is to reduce the cost of renewable power generation. This can be achieved by using advanced technologies and promoting cooperation between domestic and foreign industries and companies. Increasing domestic and foreign investment in RE infrastructure by providing financial facilities for investors, developing domestic and international cooperation, and creating a competitive environment between different companies to reduce electricity production costs were the most suitable strategies., (© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

Due to population growth and the expansion of different industries, Iran is confronted with the issue of energy and hydrogen generation for various sectors. According to research, Iran has much potential for renewable energy sources such as wind and solar. Renewable energy is critical for meeting the needs of various industries by producing energy and hydrogen. As a result, this study identified and analyzed development plans for hydrogen production from Iran's renewable energies using SWOT analysis and multi-criteria decision-making (MCDM) techniques. The Stepwise Weight Assessment Ratio Analysis (SWARA) approach was used to weigh the criteria and sub-criteria, and power generation cost was identified as the most critical sub-criteria. Then, the identified strategies were ranked using the gray additive ratio assessment (ARAS-Gray) method. Following that, the gray technique for order of preference by similarity to the ideal solution (TOPSIS-G), the gray complex proportional assessment (COPRAS-G), and the gray simple additive weighting (SAW-G) techniques were used to validate the results. The finding revealed that the strategy of cooperation and coordination between energy investing companies and various industries in Iran to develop hydrogen projects at a minimum cost was recognized as the most efficient strategy in all procedures. As a result, with the cooperation and coordination of companies and various industries in Iran, clean energy and fuel can be produced at a low cost using renewable sources. By implementing this strategy, the fluctuations in energy production caused by renewable sources will be eliminated, and the energy and hydrogen requirements of various industries will be met., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

One of the most important energy sources is non-renewable sources, including fossil fuels, the release of which causes many harmful consequences, including respiratory diseases, growth disorders, etc. On the other hand, renewable energies, including water, wind, sun, etc., are sustainable energy sources and compared to traditional fossil fuels, they have less adverse environmental effects due to the minimal emission of greenhouse gases. Due to the need to use renewable energy to reduce greenhouse gas emissions and combat climate change, the widespread use of these resources will bring about sustainable development. Therefore, creating the necessary infrastructure to use renewable energy as an important solution plays a key role in preserving natural resources. The purpose of this study is to review green and renewable fuels; Their sources, applications, advantages, and limitations. In this narrative review study, review articles, research articles, and cross-sectional descriptions were published until the beginning of February 2023 in English and Persian related to green and renewable fuels; Sources, applications, advantages, and limitations were investigated. These articles were searched in ScienceDirect, PubMed, Google Scholar, Web of Science, Scopus, and SID databases, using keywords such as renewable energy, fossil fuel, green fuel, and non-renewable energy with the aim of better understanding green fuels; Their sources, application, advantages, and limitations were obtained. After searching the databases with the mentioned keywords, 78 articles were included in the study. After removing duplicate articles, studying the abstract, and finally the full text of the articles, 35 related articles were included in the study. Endnote X7 resource management software was also used to organize, study titles and abstracts, and identify duplicate articles. Gren fuel is a non-toxic fuel that is essentially free of sulfur and aromatic compounds and is produced through various technologies such as biological and thermochemical processes. All the reviewed articles in the direction of producing green fuels such as biodiesel, natural gas, and hydrogen have pointed to the reduction of greenhouse gas emissions, improvement of air quality, stability of combustion in engines with dual fuel performance, and reduction of the negative effects of air pollution on health. Green fuel production is promising, but it faces limitations and challenges such as the need for land, water, and other resources, which can lead to changes in land use patterns, deforestation, and biodiversity loss. Also, the costs of producing biofuels depend on important factors such as raw materials, land, agricultural inputs, subsidies, and production technology. Biofuels are usually more expensive than fossil fuels and their production requires initial investment and maintenance costs. Considering the limitations and challenges of producing or using green fuel, using these renewable energy sources requires environmental planning and policy. Green fuels and renewable energy sources have emerged as promising solutions to deal with the environmental challenges caused by traditional fossil fuels. In general, green fuels offer a glimpse of a more sustainable future. However, their environmental effects need to be carefully investigated. Hence, a comprehensive understanding of diverse green fuel production methods and renewable energy technologies, along with their potential ecological impacts, is necessary to ensure the alignment of these alternative energy sources to achieve sustainable development.

Abstract In Africa, mitigating climate change in a context of a growing human population and developing economies requires a bold transition to renewable energy (RE) resources. Declining costs for solar photovoltaics (by 90% between 2009 and 2023) and wind turbines (by 57% between 2010 and 2023) fuelled their construction, and hybrid forms such as floating photovoltaics (FPV) on existing hydropower reservoirs are increasingly being explored. Nevertheless, 65% of the proposed RE capacity in Africa remains hydropower, despite confirmed ecological, socioeconomic, and political ramifications on different spatiotemporal scales. The 673 proposed hydropower plants (HPPs) would increasingly affect river systems and threaten their biodiversity. While there is clear evidence that a transition to RE in Africa is technically feasible, there is a lack of spatially explicit studies on how this transition could be implemented. Hence, the aim of the present study is to explore options for an RE mix that avoids additional hydropower construction and, therefore, further river fragmentation. Attribute data of the open-accessible Renewable Power Plant Database (RePP Africa) were analysed to assess the amount of lost capacity due to operation stops. Geospatial analyses of solar irradiation and existing reservoir data were used to derive the potential for FPV. The degree of possible replacement of future hydropower was assessed under consideration of economically feasible wind and solar photovoltaic (PV) potential. To enhance electricity generation from existing HPPs, efficient and sustainable renewable power plant planning must integrate the risk of failure, as it has diminished the available capacity in the past up to 24%. Our findings further reveal that 25 African countries could replace the proposed hydropower development by FPV covering less than 25% of the surface area of their existing hydropower reservoirs. All 36 African countries could replace proposed hydroelectricity generation by fully exploiting feasible onshore wind and solar PV potential with a mean surplus of 371 TWh per year. In summary, our findings provide scientific evidence to support policy discussions on the potential electricity gains from (1) minimizing plant failure, (2) installing FPV as a co-use option, and (3) exploiting wind and solar resources. This study provides quantitative, data-based, and spatially explicit scenarios on the implementation of an RE mix that could relieve the dam building pressure on African rivers.

Global climate change triggered by the escalating carbon dioxide (CO2) emissions resulting from heightened economic expansion and consumption of energy represents the foremost environmental concern in the contemporary global context. China is accountable for nearly 27% of total global CO2 emissions, making it the largest emitter worldwide. This study explores the consequences of economic outgrowth, fossil fuel, and renewable energy utilization on China's emissions of CO2. The study utilized an autoregressive distributed lag (ARDL) model to analyze China's annual data from 1965 to 2022. The ARDL bounds test results indicate the presence of long-term cointegration among the variables. The empirical results specify that a 1% growth in the utilization of fossil fuels and the economy leads to long-term growth of 4.97% and 0.58% in CO2 emissions. In the short term, these increases amount to 2.42% and 1.21%, respectively. Conversely, a long-term enhancement of 1% in renewable energy utilization could result in a reduction of CO2 emissions by 1.39%, whereas in the short term, the reduction would be 0.50%. This study proposes policy suggestions for the attainment of sustainable development and carbon neutrality.

The aim of this work is to develop a software to calculate the economic parameters so as to determine the feasibility of a floating offshore renewable farm in a selected location. The software can calculate the economic parameters of several types of offshore renewable energies, as follows: one renewable energy (floating offshore wind-WindFloat, tension leg platform (TLP), and spar; floating wave energy-Pelamis and AquaBuoy), hybrid offshore wind and wave systems (Wave Dragon and W2Power), and combined offshore wind and waves with different systems (independent arrays, peripherally distributed arrays, uniformly distributed arrays, and non-uniformly distributed arrays). The user can select several inputs, such as the location, configuration of the farm, type of floating offshore platform, type of power of the farm, life-cycle of the farm, electric tariff, capital cost, corporate tax, steel cost, percentage of financing, or interest and capacity of the shipyard. The case study is focused on the Galicia region (NW of Spain). The results indicate the economic feasibility of a farm of floating offshore renewable energy in a particular location in terms of its costs, levelized cost of energy (LCOE), internal rate of return (IRR), net present value (NPV), and discounted pay-back period. The tool allows for establishing conclusions about the dependence of the offshore wind resource parameters, the main distances (farm-shore, farm-shipyard, and farm-port), the parameters of the waves, and the bathymetry of the area selected., Competing Interests: The authors declare no conflicts of interest

Abstract The reduction of fossil energy sources, the harmful environmental effects caused by high energy consumption, and the increase in the share of energy consumption in the building sector have increased the need to pay attention to building energy consumption. This study offers an intricate examination of a residential locality in Florida, with a particular emphasis on the architectural design of a building, issues related to the local environment and several possibilities for enhancing energy efficiency. It examines the influence of the environment in the area on architectural design and investigates two different possibilities for improving energy efficiency. The first scenario focuses on assessing thermal insulation and shading, while the second scenario envisions utilizing photovoltaic cells to achieve a zero-energy building. The proposed initiatives seek to optimize energy efficiency, save expenses, and foster environmental sustainability in the region. In this research, the total energy consumption of a building with residential use in the climate of the case study was validated by DesignBuilder® simulation software, and the results obtained from the software. Then, using the standard of energy consumption of the building, various strategies for optimizing energy consumption have been simulated. Using energy simulation software, solutions for using external horizontal awnings and installing a thermal insulation sheet on the external wall of the building were investigated, which resulted in a reduction of 200 kWh of energy consumption compared to the normal state. Then, the building’s energy consumption intensity was calculated for each of the proposed solutions, and the building’s energy classification was determined with energy star and LEED standards.

Transportation infrastructure plays a significant role in exacerbating climate change as it contributes to a substantial increase in carbon dioxide (CO2) emissions. The sole economic sector in which European countries have not succeeded in reducing greenhouse gas (GHG)emissions is the transportation industry. Therefore, reducing transport-related emissions is a primary focus of emphasis in the European Union's efforts to meet its climate targets. Accordingly, this study analyzes the impact of renewable energy use, patent development, and energy taxes in the transport sector on the three different modes of transport-related emissions (aviation, road, and rail) in the 10 highest-income countries of the European Union over the period 2008–2020. The study uses the novel half-panel jackknife estimator for this analysis. The results of the estimation show that patents contribute to the reduction of CO2 emissions in aviation and rail transportation, while renewable energies are only effective in rail transportation. In the context of road transportation, energy taxes are effective in mitigating CO2 emissions. Based on these findings, it is recommended that European Union policymakers promote the use of electric vehicles and eco- friendly means of transportation in road transport through energy taxes, increase the use of renewable energy sources such as biodiesel in rail transport, and reduce CO2 emissions by supporting patents that promote green innovations in the aviation sector. [ABSTRACT FROM AUTHOR]

From its commissioning in 2006 to the present, the Spanish Control Centre for Renewable Energies (CECRE) has been a worldwide pioneer and reference centre in the integration of renewable energies in the electrical system. In the last 15 years, CECRE has allowed a high penetration of renewable energies in Spanish electrical system by means of the supervision and control of renewable facilities, while ensuring the power supply security. This paper defines the bases of renewable energy operation in CECRE and introduces forecasting systems for renewable energies. Furthermore, this paper describes the participation of renewable energies in balancing services and congestion management. Finally, new challenges for Spanish transmission system operator (TSO) are presented for the integration of renewable energies along with the energy transition and decarbonization.

With the consumption of fossil fuels and the impact of the greenhouse effect, renewable energies are ushering in a huge development opportunity, thus the optimal configuration of energy storage is essential to cope with the intermittence and fluctuation of renewable energies. This paper establishes a mathematical model for optimal sizing of energy storage in generation expansion planning (GEP) of new power system with high penetration of renewable energies. The objective function is to achieve the lowest total cost of investment and operation under the comprehensive consideration of various generation technologies and energy storage technologies. Carbon peaking and carbon neutrality goals are transformed into constraints of the GEP model to achieve high penetration of renewable energies in a power system. And 8760h operation curve are adopted to deal with the intermittence and fluctuation of renewable energies and obtains a more reasonable and realistic GEP results. Meanwhile, the optimal sizing of energy storage is solved in GEP model by detailed operation optimization and constraints of penetration rate and curtailment rate of renewable energies. Finally, the solving flow chart of GEP model and flow chart of optimal sizing of energy storage are given and the validity of this GEP model is proved in case analysis. In addition, carbon peaking goal may achieve in advance by vigorously developing wind power and PV power and configuring appropriate energy storage.

Much is currently being studied on the negative visual impact associated to the installation of large wind turbines or photovoltaic farms. However, methodologies for quantitatively assessing landscape impact are scarce. In this work we used electroencephalographic (EEG) recordings to investigate the brain activity of 14 human volunteers when looking at the same landscapes with and without wind turbines, solar panels and nuclear power plants. Our results showed no significant differences for landscapes with solar power systems or without them, and the same happened for wind turbines, what was in agreement with their subjective scores. However, there were clear and significant differences when looking at landscapes with and without nuclear power plants. These differences were more pronounced around a time window of 376-407 msec and showed a clear right lateralization for the pictures containing nuclear power plants. Although more studies are still needed, these results suggest that EEG recordings can be a useful procedure for measuring visual impact., (Copyright © 2017 Elsevier Ltd. All rights reserved.)

This article examines the comprehensive changes and adjustments made to the Bachelor’s degree program in Electrical and Electronics Engineering (BSc) to align with the growing need for sustainable energy solutions. The primary objective of these revisions is to equip future engineers with a deep understanding of both traditional fossil energy sources and emerging renewable energy technologies, with a particular emphasis on smart grids. The revamped curriculum integrates advanced content delivery through a unique blend of professional laboratories, in-person lectures, discussions with industry experts, and online courses. By providing a holistic educational experience, the program aims to prepare graduates to lead the transition towards sustainable energy systems, fostering innovation and resilience in the energy sector.

In the early 21st century, Brazil began adopting a series of energy policies aimed at analyzing and understanding the dynamics of its energy matrix. In this context, this article aims to analyze the dynamics of the Brazilian energy matrix based on the main energy policies adopted in the early 21st century. The research methodology begins with a bib-liographic review on the topic, directed at understanding the studied dynamics, as well as the construction of a theoretical framework from directly and indirectly related works. The bibliographic survey was conducted through research in libraries, digital repositories, and scientific journals, referencing books, dissertations, theses, databases, and articles related to the topic. This investigation is important as it deals with energy-related issues that are related to climate concerns. We conclude that, based on existing data, although there are concerns and debates about the environment and climate change in Brazil, there has been little progress in terms of the percentage of renewable energy sources incorporated into the Brazilian energy matrix between 1990 and 2020. Examining the Brazilian energy panorama in 1990 and 2020, we can see that the share of renewable sources reached 49%, making it the highest percentage of renewable sources in the internal energy supply during this period of analysis, with 51% of non-renewable sources.

According to the Net Zero long-term plan, about 95% of the building's CO2 emissions should be declined by 2050 compared to 2020. In this study, focusing on “energy efficiency” and “renewables”- key pillars of the Net Zero plan-two techniques of adding photovoltaic cells (PVs) along with the loading of phase change material (PCM) to Saudi Arabian buildings were studied. In the first pillar, the installation of PV cells on all the horizontal/vertical envelopes was checked and it was found that in the same area, the electricity production on the roof is 136% more than the south-oriented vertical envelope and 1126% more than the north one. On the other hand, PVs on the roof reduce the cooling load by 5.8%, increase the heating load by 2.5%, and finally reduce the annual energy demand by 4.6% as a side effect. For the second pillar, PCM was installed in vertical/horizontal envelopes. As the thickness of PCM increases, annual energy consumption decreases, but at a lower rate. When the thickness of PCM reaches 15 cm, it is expected that it will have an energy savings of 9855 kWh/year, but the calculations exhibit a value of 4701 kWh, which demonstrates the fall in PCM effectiveness with thickness rise. The effect of PCM installation location had a very important effect. To reduce the cooling load, PCM should be installed in the outermost layer, and vice versa for the heating load, it should be installed in the innermost layer. When the annual analysis is prioritized, installing PCM in the outermost layer can perform better than the innermost layer up to 14.6%.

One of the most important energy sources is non-renewable sources, including fossil fuels, the release of which causes many harmful consequences, including respiratory diseases, growth disorders, etc. On the other hand, renewable energies, including water, wind, sun, etc., are sustainable energy sources and compared to traditional fossil fuels, they have less adverse environmental effects due to the minimal emission of greenhouse gases. Due to the need to use renewable energy to reduce greenhouse gas emissions and combat climate change, the widespread use of these resources will bring about sustainable development. Therefore, creating the necessary infrastructure to use renewable energy as an important solution plays a key role in preserving natural resources. The purpose of this study is to review green and renewable fuels; Their sources, applications, advantages, and limitations. In this narrative review study, review articles, research articles, and cross-sectional descriptions were published until the beginning of February 2023 in English and Persian related to green and renewable fuels; Sources, applications, advantages, and limitations were investigated. These articles were searched in ScienceDirect, PubMed, Google Scholar, Web of Science, Scopus, and SID databases, using keywords such as renewable energy, fossil fuel, green fuel, and nonrenewable energy with the aim of better understanding green fuels; Their sources, application, advantages, and limitations were obtained. After searching the databases with the mentioned keywords, 78 articles were included in the study. After removing duplicate articles, studying the abstract, and finally the full text of the articles, 35 related articles were included in the study. Endnote X7 resource management software was also used to organize, study titles and abstracts, and identify duplicate articles. Green fuel is a non-toxic fuel that is essentially free of sulfur and aromatic compounds and is produced through various technologies such as biological and thermochemical processes. All the reviewed articles in the direction of producing green fuels such as biodiesel, natural gas, and hydrogen have pointed to the reduction of greenhouse gas emissions, improvement of air quality, stability of combustion in engines with dual fuel performance, and reduction of the negative effects of air pollution on health. Green fuel production is promising, but it faces limitations and challenges such as the need for land, water, and other resources, which can lead to changes in land use patterns, deforestation, and biodiversity loss. Also, the costs of producing biofuels depend on important factors such as raw materials, land, agricultural inputs, subsidies, and production technology. Biofuels are usually more expensive than fossil fuels and their production requires initial investment and maintenance costs. Considering the limitations and challenges of producing or using green fuel, using these renewable energy sources requires environmental planning and policy. Green fuels and renewable energy sources have emerged as promising solutions to deal with the environmental challenges caused by traditional fossil fuels. In general, green fuels offer a glimpse of a more sustainable future. However, their environmental effects need to be carefully investigated. Hence, a comprehensive understanding of diverse green fuel production methods and renewable energy technologies, along with their potential ecological impacts, is necessary to ensure the alignment of these alternative energy sources to achieve sustainable development. [ABSTRACT FROM AUTHOR]

The global deployment of renewable energies has taken off and calls for a continuous increase in foreign investments and cooperation, particularly because many states cannot cover the costs and technological requirements of the energy transition on their own. Therefore, there should be policies and legal frameworks in place to protect and thereby promote foreign investments. International Investment Agreements (IIAs) can, ceteris paribus, contribute to this goal. These agreements contain a set of obligations that protect foreign investments against possible discriminatory or arbitrary conduct of the host states. This includes transparency obligations that can help to create a level playing field for national and foreign renewable energy investors. Unfortunately, the concept of transparency, and its inherent implications, has not been clearly defined to date, and its relationship with renewable energy investments is still under investigation. Therefore, it is important to realise the prevailing transparency obligations under IIAs, and the best practices that can better meet the particular requirements of renewable energy investments. Using a qualitative approach, this article intends to pursue this goal by providing an overview of the concept of transparency, exploring its status in the context of fair and equitable treatment (FET), and analysing favourable transparency clauses in the light of renewable energy investment considerations.

The promotion of rural development can benefit from the advancement of renewable energies as potential sources of growth and income in an integrated economy. Rural areas have attracted a significant proportion of renewable energy installations, mainly wind energy. Moreover, the development of renewables has been explicitly claimed as a key instrument to support rural economies through job creation, new sources of income for landowners and local authorities, and more sustainable industries with the revitalization of their productive systems. However, the installation of renewable energies can have, in the short and long term, different impacts on the territory. This study explores Campo de Belchite citizens’ perception of the effects wind energy installations has on the economy, demography, and employment opportunities. The Campo de Belchite county (Aragon) was used as a case study due to its wind-farm development. Citizens perceptions on the socio-economic effects and expectations of renewable energies have been explored on the basis of their responses to an online survey. Findings show a great heterogeneity between agents and territories, both in the evaluation of impacts and in their hopes. The management model plays a critical role for achieving its social acceptance. This work contributes with industrial and energy policy insights that call for a more decentralized, participatory and transparent management models.

This article examines the comprehensive changes and adjustments made to the Bachelor's degree program in Electrical and Electronics Engineering (BSc) to align with the growing need for sustainable energy solutions. The primary objective of these revisions is to equip future engineers with a deep understanding of both traditional fossil energy sources and emerging renewable energy technologies, with a particular emphasis on smart grids. The revamped curriculum integrates advanced content delivery through a unique blend of professional laboratories, in-person lectures, discussions with industry experts, and online courses. By providing a holistic educational experience, the program aims to prepare graduates to lead the transition towards sustainable energy systems, fostering innovation and resilience in the energy sector. [ABSTRACT FROM AUTHOR]

The global deployment of renewable energies has taken off and calls for a continuous increase in foreign investments and cooperation, particularly because many states cannot cover the costs and technological requirements of the energy transition on their own. Therefore, there should be policies and legal frameworks in place to protect and thereby promote foreign investments. International Investment Agreements (IIAs) can, ceteris paribus, contribute to this goal. These agreements contain a set of obligations that protect foreign investments against possible discriminatory or arbitrary conduct of the host states. This includes transparency obligations that can help to create a level playing field for national and foreign renewable energy investors. Unfortunately, the concept of transparency, and its inherent implications, has not been clearly defined to date, and its relationship with renewable energy investments is still under investigation. Therefore, it is important to realise the prevailing transparency obligations under IIAs, and the best practices that can better meet the particular requirements of renewable energy investments. Using a qualitative approach, this article intends to pursue this goal by providing an overview of the concept of transparency, exploring its status in the context of fair and equitable treatment (FET), and analysing favourable transparency clauses in the light of renewable energy investment considerations. [ABSTRACT FROM AUTHOR]

Fereydounshahr experiences growing electricity shortfalls and an overreliance on polluting diesel generators. This analysis models renewable hybrid systems to electrify a local dairy operation using HOMER Pro 3.11 software. Despite higher upfront costs, adding just 5% solar photovoltaics maintained low net present costs while increasing clean energy penetration versus diesel generators alone. Furthermore, a combined diesel-solar-wind system reduced carbon dioxide and nitrogen oxide emissions by over 1%. Although diesel generators had the shortest payback period at 48 years, the capital recovery factor for a diesel–solar combination reached 62 years. Thus, tailored hybrid renewable systems could provide an affordable, low-emissions electricity solution for the Fereydounshahr livestock facility. With suitable wind and solar resources, the right policy incentives could also unlock substantial local renewable capacity to meet rising demand and mitigate dependence on imported, climate-harming fossil fuels.

To achieve a more ecologically friendly energy transition by the year 2050 under the European “green” accord, hydrogen has recently gained significant scientific interest due to its efficiency as an energy carrier. This paper focuses on large-scale hydrogen production systems based on marine renewable-energy-based wind turbines and tidal turbines. The paper reviews the different technologies of hydrogen production using water electrolyzers, energy storage unit base hydrogen vectors, and fuel cells (FC). The focus is on large-scale hydrogen production systems using marine renewable energies. This study compares electrolyzers, energy storage units, and FC technologies, with the main factors considered being cost, sustainability, and efficiency. Furthermore, a review of aging models of electrolyzers and FCs based on electrical circuit models is drawn from the literature and presented, including characterization methods of the model components and the parameters extraction methods, using a dynamic current profile. In addition, industrial projects for producing hydrogen from renewable energies that have already been completed or are now in progress are examined. The paper is concluded through a summary of recent hydrogen production and energy storage advances, as well as some applications. Perspectives on enhancing the sustainability and efficiency of hydrogen production systems are also proposed and discussed. This paper provides a review of behavioral aging models of electrolyzers and FCs when integrated into hydrogen production systems, as this is crucial for their successful deployment in an ever-changing energy context. We also review the EU’s potential for renewable energy analysis. In summary, this study provides valuable information for research and industry stakeholders aiming to promote a sustainable and environmentally friendly energy transition.

To achieve a more ecologically friendly energy transition by the year 2050 under the European "green" accord, hydrogen has recently gained significant scientific interest due to its efficiency as an energy carrier. This paper focuses on large-scale hydrogen production systems based on marine renewable-energy-based wind turbines and tidal turbines. The paper reviews the different technologies of hydrogen production using water electrolyzers, energy storage unit base hydrogen vectors, and fuel cells (FC). The focus is on large-scale hydrogen production systems using marine renewable energies. This study compares electrolyzers, energy storage units, and FC technologies, with the main factors considered being cost, sustainability, and efficiency. Furthermore, a review of aging models of electrolyzers and FCs based on electrical circuit models is drawn from the literature and presented, including characterization methods of the model components and the parameters extraction methods, using a dynamic current profile. In addition, industrial projects for producing hydrogen from renewable energies that have already been completed or are now in progress are examined. The paper is concluded through a summary of recent hydrogen production and energy storage advances, as well as some applications. Perspectives on enhancing the sustainability and efficiency of hydrogen production systems are also proposed and discussed. This paper provides a review of behavioral aging models of electrolyzers and FCs when integrated into hydrogen production systems, as this is crucial for their successful deployment in an ever-changing energy context. We also review the EU's potential for renewable energy analysis. In summary, this study provides valuable information for research and industry stakeholders aiming to promote a sustainable and environmentally friendly energy transition. [ABSTRACT FROM AUTHOR]

Copyright of Formación Universitaria is the property of Centro de Informacion Tecnologica (CIT) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Transitioning from fossil to renewable energy is a global challenge, especially for countries with large fossil-fuel reserves and exports, such as Iran. This study analyses agricultural students’ knowledge of, attitudes toward, and perceptions of renewable energies in the agriculture sector in Guilan Province in Iran. The research was based on a structured questionnaire comprising three sections: (i) respondents’ socio-demographics; (ii) practicality and relevance of academic material and curriculum; and (iii) respondents’ knowledge of and attitudes and perceptions toward renewable energies in agriculture. The results showed that students’ attitudes regarding renewable energies ranked highest, and their perception was lowest. The results also showed a positive and significant relationship between the respondents’ knowledge, marital status, age, and level of education. Moreover, respondents’ age and educational level significantly impacted their attitudes. Cluster analysis divided students’ behavior into three different clusters. These clusters were most affected by attitude. In clustering students’ behavior towards using renewable energies, 38.5%, 33.5%, and 28% of respondents were positioned in the first, third, and second clusters, respectively. This is a pioneering study analyzing agricultural students’ behavior regarding renewable energies in agriculture in Guilan Province, Iran. The results of this study can assist agricultural organizations, politicians in the field of energy, and local authorities in promoting sustainable energy in Guilan Province.

Copyright of Revista de Economia e Sociologia Rural is the property of Sociedade Brasileira de Economia e Sociologia Rural and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Due to the needs of modern societies to provide their energy fully or partially from the renewable energy sources and its necessity as a main principle of sustainable development, its necessary to assess and evaluate renewable energy and its integrating for utilizing a part of consumed energy for societies from cheap energy resource and solving the ecological and social problems. Despite of great potentials of Ardabil province in agriculture, water streams, climatic precipitation and climatic conditions, the necessity of appropriate investments in order to better exploitation form these capabilities (renewable energy) increases. The goal of this research is to potentiometry for the exploitation of renewable energies (solar, wind, biomass and bio-energy, water) based on farming, improvement of policy making for developing renewable energies, developing atlas of renewable energies based on farming and improving policy making of developing renewable energies in Ardabil province. According to the results of this study, the most talented town of Ardabil province in terms of renewable energy is Meshgin shahr town. Solar energy 3/449 kW h/m2/y, hydropower 270/34 Gw h/y and geothermal 76/11kw h/y ranked the first among all the cities of Ardabil province. And the lowest was Sarein city.

Given the unprecedented level of air pollution in urban areas, green transport systems has been a subject to an important debate in academic and policymaking circles. Despite the considerable outputs of the attendant literature, most of empirical studies to date have relied on conventional econometric models in which structural shocks are not controlled. This study, therefore, aims to offer a new perceptive of the dynamic connection between renewable energy, environment-related technological innovation, and transport-based CO2 emissions in Turkey during 1990Q1 to 2014Q1 by applying the Structural Vector Autoregressive approach (SVAR). Furthermore, to explore the co-movements and the lead-lag interrelations among the study variables, the wavelet coherence technique was used. The wavelet coherence technique circumvents the other traditional causality approaches by detecting the causal interrelation between the underlying series at different frequencies. The findings disclose that environment-related technological innovation has no reliable power to explain the variation in CO2 emissions from the transport sector. Solar energy is found to impact the CO2 emissions positively in the long run, while biofuels hold the same effect in short run. Moreover, per capita GDP and urbanization significantly impact the carbon emissions from the transport system in the long run with a negative sign. The wavelet analysis reveals that renewables and environmental-related technological innovation lead the transport-based CO2 emissions. The fourth and 16th periods are the most dominant frequencies. Accordingly, the study suggests that innovation in environment-related technologies is not enough to mitigate the pollution that stemming from the transport system in Turkey, it should be accompanied by strong and effective environmental measures. These policies might include environmental taxations, carbon pricing and trading schemes, which aim not only to prevent the pollution and over-extraction of resources, but also to promote the public revenues from different activities that related to environmental purposes and other applications such as energy product and vehicle fuels. In addition, it is suggested to strengthening the transportation system through the deployment of renewables and high-tech eco-friendly modes of transportation.