Sustainable renewable energy supply chain with current technological adaptation: Macro energy progress policy in Iran

Reliable and sustainable energy supply is fundamental to the economic and social fabric of nations, and to the well-being and quality of life for their citizens. Major power generation in India is carried out by conventional energy sources, coal and mineral oil-based power plants which contribute heavily to greenhouse gases emission. India has a vast supply of renewable energy resources, and it has one of the largest programs in the world for deploying renewable energy products and systems. Rene wable energy is a clean and sustainable source of energy derived from nature and it has potential to provide solutions to the venerable energy problems being faced by the developing countries like India. To overcome energy shortage in India the renewable energy sources like wind energy, solar energy, geothermal energy, ocean energy, biomass energy and fuel cell technology can be used. Indeed, it is the only country in the world to have an exclusive ministry for renewable energy development, the Ministry of Non-Conventional Energy Sources (MNES). This paper reviews the renewable energy scenario of India. It begins by describing the importance of renewable energy and its advantages over fossil fuels. It gives an overview of the renewable energies in India while evaluating the current status and the deployment of each of these technologies to date in India.

Renewable energy is a sustainable and green energy converted from renewable energy resources in the nature. There is a huge amount of renewable energy resources in the ocean that can be changed into useful energy like electricity, store for long time use, or apply in the daily energy consumption. These marine renewable energies (MRE) include wave energy, ocean thermal energy, tidal energy, ocean current energy, salinity gradient energy, and offshore energy. With a big area, the oceans have been prospected that it brings endless renewable energy sources for social development and human demand. The renewable ocean energy shows many advantages of sustainable energy, clean energy, and non-carbon dioxide emissions by generating from wave and water in the ocean with an enormous amount of natural energy resources. The MRE can service at many areas of off-shore, on-shore, and remote areas where need energy to drive daily living demands. The MRE reveals some disadvantages such as the influence of daily, monthly, season, and period of time. The solutions have been developed to solve the limitations of the MRE such as developing the storage method to store energy for long time use or making the balance of the output performance to improve quality of the renewable energy. The MRE has also received many concerns from countries by promulgating policies, strategies, and plans to develop the renewable ocean energy such as green economy development, blue economy strategy, carbon dioxide emission reduction, and encouragement of using marine renewable energy. This paper reviews current marine renewable energy with its generation, storage, and application. The work also mentioned some advantages, disadvantage, policies, strategies, and solutions to encourage the development of the renewable ocean energy in over the world. The results hope that it will be spread development, exploitation, and application of marine renewable energy in the near future. Keywords: Marine renewable energy, energy storage, generation, application, sustainable energy

Climate change, limited fossil fuel availability and the dependency on energy carrier imports lead the European Union to the formulation of an energy policy for Europe. The EU sets the following criteria for its future energy supply: sustainability, security of supply and competitiveness. Considering the carbon dioxide emissions of fossil fuels and the unsolved problem of the ultimate disposal of radioactive waste, only renewable energy can currently be considered sustainable if applied in a socially acceptable way and in accordance with nature conservation. The use of renewable energy can also reduce the dependency on energy carrier imports. Contrary to fossil fuels, renewable energy will become cheaper in the future due to technological learning. The main disadvantage of some renewable energy resources is their fluctuating availability. Adaptation of the energy supply system must take place especially in the power sector in order to reliably cover fluctuating demand with fluctuating resources at any time. In this work, the energy system model ‘REMix’ (Renewable Energy Mix for Sustainable Electricity Supply) is developed. It uses data on the availability of renewable energy across Europe and North Africa (EUNA) to dimension low-cost power supply structures for the EUNA-region, or parts of it, under specific conditions, such as specified shares of renewable energy in the power supply or specified national self-supply shares. The model takes into account the costs of generation technologies, transmission lines and storage units, and finds a combination of these technologies and their geographic locations that is least-cost under the given assumptions. A geographic information system was used for the analysis of the installable capacities and power generation potentials of typical technologies for harnessing renewable energy resources. This analysis is described and the potentials of solar PV, solar CSP, wind onshore and wind offshore, biomass, hydro and geothermal power plants are shown in tables and maps. The data are used as input into a linear programming energy system model which uses them as constraints on the power supply system to be dimensioned. The model, its sensitivity to input parameter variations and a test application are described. The findings confirm the basic findings of other work in this field: transmission lines can be a crucial element of a low-cost, renewable-energy-based electricity supply because they enable balancing effects in a large grid and the use of the highest quality resources even in remote areas, such as deserts or at sea. However, the international cooperation that is necessary to reach the cost-minimum for a given supply task may not be reached by politics or resulting dependencies may be opposed to political goals. Therefore, REMix was built such that countries can be examined individually and the influence of different parameters on their energy supply costs and structure can be investigated. In the test model application, power supply systems for 36 regions in Europe and North Africa, almost all individual countries, are designed with REMix as island grids on the one hand and on the other hand as a network without transmission restrictions (other than the costs of the transmission lines). The model shows that in certain regions the island grid electricity costs can be much higher than, only a little higher than, or even lower than the electricity costs in the network, under the given technological and economic assumptions. The sensitivity to parameter variations is shown to be high; the results of the test application must therefore be considered one example of a technically feasible and efficient supply system but cannot claim to be least-cost in general.

This research aims to evaluate the impact of corporate social responsibility (CSR) on sustainable energy development (SED) by developing the role of mediating variables such as usage of renewable energy resources (URR) and sustainable energy supply (SES). We use qualitative and quantitative technique such as Partial Least Squares Structural Equation Modeling (PLS-SEM) to analyze the data of collection from experts, economists, executives in Vietnam in 2020. The study has proved the corporate social responsibility (CSR) affecting directly to the sustainable energy development (SED). Besides, the findings suggest a positively significant impact of both sustaining energy supply (SES) and the usage of renewable energy resources (URR) on sustainable energy development (SED). Thus, the research brings the whole view of corporate social responsibility affects to the sustainable energy development (SED) through the URR and SES. This study contributed empirical work in the literature of corporate social responsibility, renewable energy, sustainable energy supply (SES) and sustainable energy development (SED). The outcomes of this study can be used by policy makers, economists, top management in the governmental office and even the corporate. A mediating role of SES as a value-added contribution to this study and can be consolidated and strengthened more in coming research. Keywords: Corporate Social Responsibility, Renewable Energy, Sustainable Energy Development, Renewable Energy Resources, Sustaining Energy Supply.JEL Classifications: M14, Q21, Q25, Q43, Q56DOI: https://doi.org/10.32479/ijeep.10774

The transition towards a more affordable, reliable, and sustainable energy provision paradigm is one of the main 21st century challenges that humanity must overcome to protect the planet from the harmful effect caused by climate change. The concentration of CO2 in the atmosphere has been dramatically increasing since the pre-industrial era. If the increase of green-house gasses emissions continues unabated, this will bring dramatic consequences for planet Earth, compromising eventually the existence of many species, including the human race. To avoid a climate change catastrophe, the share of primary energy coming from renewable energy resources must increase from around 15% in 2015 to 65% in 2050. This energy transition can not rely solely on few successful technologies (i.e., solar photovoltaic, and wind energy), but it must count on a larger variety of technical solutions that are suitable for a wider range of renewable sources and diversity of circumstances. For instance, renewable thermal energy sources for power generation (i.e., geothermal reservoir, biomass fuel, and concentrated solar radiation), can provide a large portion of the world electricity demand in the future. However, the exploitation of a good portion of these sources strongly depends on the market success of technologies such as the Organic Rankine Cycle (ORC) power system. One of the key aspects to make ORC systems economically competitive, especially at the smaller sizes (⇡ 1 − 50 kW), is the realization of highly efficient turbomachinery components. The fluid-dynamic design of ORC turbomachinery significantly differs from the design of traditional machines (i.e., steam and gas turbines), and this is mainly due to the different thermo-physical properties and gas dynamic behavior of the organic working fluids. This means that design methods devised for standard steam and gas turbomachinery can not be used for turbomachinery operating in the Non-ideal compressible fluid dynamics (NICFD) region. Furthermore, no experimental campaigns have ever been carried out to create a body of empirical knowledge to support the design highly efficient ORC turbomachinery. As a consequence, the entire design process of ORC turbomachinery relies only on the use of advanced CFD software. The current trend is to couple CFD tools with numerical optimization techniques in order to automatically obtain optimal flow passage geometries. In particular, adjoint-based methods have clearly demonstrated to be the only optimization technique capable of tackling the multi-stage turbomachinery design problem, in which thousands of design variable must be concurrently optimized. Therefore, the research documented in this PhD dissertation aimed at extending the adjoint method in order to perform the fully-turbulent fluid-dynamic shape optimization of 3D multi-stage ORC turbomachinery. This document contains an extensive introduction, three main chapters, each documenting a building block towards the accomplishment of the main goal of this PhD project, and a final concluding chapter that summarizes all the research outcomes of this work and proposes future steps for research in this field. The first part of the thesis describes the extension of the RANS equations, the convective numerical schemes, and the viscous numerical schemes to the use of complex thermo-physical laws, so to simulate turbulent flows of components working in the NICFD thermodynamic region. The second part documents the derivation of the adjoint solver in order to resolve shape-optimization design problems for 2D single row of ORC turbomachinery. Finally, the last part reports the extension of the adjoint method to 3D multi-stage turbomachinery design.

The aim of this paper is to provide a multi-criteria decision-making intelligent approach based on Industry 4.0 and Triple Bottom Line principles for sustainable supply chain development in the renewable energy sector. In particular, the solar photovoltaic energy supply chain is used as a case study, encompassing the entire energy production process, from supply to disposal. An exhaustive literature review is conducted to identify the main criteria affecting social, economic and environmental sustainability in the photovoltaic energy supply chain, and to explore the potential impact of Industry 4.0 on sustainability. Subsequently, three Fuzzy Inference Systems combining quantitative and qualitative data are built to calculate the supply chain's social, economic and environmental sustainability. Experts' opinions are used to identify the impact of Industry 4.0 technologies on the three pillars of sustainability for each supply chain stage. Finally, a novel sustainability index, Sustainability Index 4.0, is formulated to compute the overall sustainability of the photovoltaic energy supply chain in seven countries. The results show the applicability and usefulness of the proposed holistic model in helping policy makers, stakeholders and users to make informed decisions for the development of sustainable renewable energy supply chains, taking into account the impact of Industry 4.0 and digital technologies.

The development of renewable energy has emerged as a cornerstone of sustainable economic transformation, offering a pathway to reduce carbon dependence and enhance long-term energy security. As a result, this study examines the influence of supply chain digitalization, economic growth, and environmental stringency policies on renewable energy consumption (REC) across 33 OECD countries from 2000 to 2021. Using the Method of Moments Quantile Regression (MMQR) approach, the research provides robust, distribution-sensitive insights into how these factors shape renewable energy dynamics. In addition to the main variables, financial development and economic globalization were included as control variables to capture broader macroeconomic effects. The empirical results reveal that supply chain digitalization exerts a negative and consistent influence on REC across all quantiles, suggesting that technological advancement within supply chains may still be heavily dependent on non-renewable energy inputs. Conversely, environmental stringency policies demonstrate a positive and significant impact on REC at all quantiles, indicating that stricter environmental regulations effectively drive the transition toward cleaner energy sources. However, the effect of economic growth varies across quantiles, reflecting a nonlinear relationship—fostering renewable energy use in some instances while increasing conventional energy demand in others. Among the control variables, economic globalization enhances REC, implying that greater international integration facilitates technology transfer and access to green innovations. In contrast, financial development negatively affects REC, suggesting that current financial systems may still prioritize fossil fuel investments. Overall, the study emphasizes the need to align digital transformation strategies, financial reforms, and policy frameworks to strengthen renewable energy development and ensure a sustainable, low-carbon future across OECD nations.

Economic growth and increasing population density have an influence on the large need for electrical energy in Indonesia. The amount of energy needed is directly proportional to economic growth and population density. This condition could threaten energy security in Indonesia if all stakeholders still depend on non-renewable energy. Coal, oil, and natural gas, which are continuously exploited for generating electricity, will eventually run out and will no longer be able to meet Indonesia's electrical energy needs. Apart from that, the use of non-renewable energy also has a negative impact on the environment. Indonesia is a country that is rich in renewable energy sources that can be used as a source of energy for generating electricity, but there are still obstacles in processing and using them, so they are not optimal. This paper aims to analyze the potential and challenges of providing electrical energy in Indonesia. The method used is a descriptive method using primary and secondary data and literature studies. The results of this study show that the potential for renewable energy that can be processed and developed for electricity generation is quite large, namely from energy sources originating from geothermal, hydropower, mini-hydro and micro-hydro, bioenergy, solar power, wind energy, and ocean waves. The survey results show that 52% of the public agree with the use of renewable energy, and 43% agree with the use of nuclear energy as a source of renewable electrical energy. The reason for choosing nuclear energy is the reliability of the energy supply. A strategy for developing renewable electrical energy can be formulated based on the opportunities and challenges currently faced to achieve energy security in Indonesia. Efforts to develop renewable electrical energy need to be carried out with the cooperation of all relevant stakeholders so that the sustainability of electrical energy in Indonesia can be realized.

Solar energy is an environmentally friendly and reliable source of electricity and contributes immensely towards achieving Sustainable Development Goal (SDG) 7. The quantity of solar radiation reaching the earth's surface offers enough prospects for solar and green energy investments. This study aims to develop an integrated model to explain the effects of sustainability-enabled initiatives on sustainable investment adoption and solar energy investment and to ascertain whether the relationship between solar energy investment and environmental uncertainty is parabolic (quadratic) or linear. Cross-sectional survey data from private companies in Ghana has been used. SMART-PLS version 3.3.9 has been used to analyse and confirm our hypotheses. The results showed that sustainability initiatives (e.g., supply chain integration, institutionalization, supply chain resilience, innovativeness, climate literacy, and justice) were found to be linear. Moreover, sustainable investment adoption moderates the relationships between various factors identified and solar energy investment. Again, environmental uncertainty confirmed a quadratic relationship with solar energy investment. By implications, this paper is the first of its kind to uniquely apply quadratic analysis in the context of renewable energy investment and sustainable energy in Ghana. The newly developed integrated model could be used to explain the drivers of sustainable investment adoption and solar energy investment in Ghana and beyond. Besides, the results will stimulate and re-enforce Ghana’s renewable energy policies (Act 832 and Act 1045) towards the realisation of SDGs 7 and 13.

The growing demand for renewable energy positions it as a cornerstone for climate change mitigation and greenhouse gas emissions reduction. Although renewable energy sources generate around 30% of global electricity, their production and deployment involve significant environmental challenges. This review analyzes renewable energy projects from a life cycle perspective, focusing on environmental impacts throughout the supply chain. Particular emphasis is placed on the energy-intensive nature of manufacturing phases, which account for 60% to 80% of total emissions. The extraction of critical raw materials such as neodymium, dysprosium, indium, tellurium, and silicon is associated with emission levels ranging from 0.02 to 0.09 kg of carbon dioxide equivalent per kilowatt-hour for rare earth elements, along with an estimated average land degradation of 0.2 hectares per megawatt installed. Furthermore, the production of solar-grade silicon for photovoltaic panels consumes approximately 293 kilowatt-hours of electricity per kilogram, significantly contributing to the overall environmental footprint. Through a comprehensive review of the existing literature, this study integrates life cycle assessment and sustainable supply chain management approaches to identify environmental hotspots, quantify emissions, and propose strategic improvements. The analysis provides a structured, systematized, and data-driven evaluation, highlighting the relevance of circular economy principles, advanced recycling technologies, and digital innovations to enhance sustainability, traceability, and resilience in renewable energy supply chains. This work offers actionable insights for decision-makers and policymakers to guide the low-carbon transition.

Objective: This study examines the transition to clean energy in Egypt as a constitutional commitment mandated by the Egyptian Constitution and as an international demand emphasized by numerous international agreements due to the increasing environmental risks of greenhouse gas emissions. Methods: This study utilizes a descriptive-analytical approach to describe and analyze the current reality of renewable energy in accordance with the current Egyptian Constitution and international demands for environmental protection. The study relies on a combination of primary and secondary sources, as well as scientific publications, to support the analysis and draw conclusions. Results: The study findings indicate that international climate agreements cannot achieve their objectives unless parallel national mechanisms are established to serve the same goal. The study also confirms that the legislative system in a country can significantly contribute to climate protection goals, which are a global demand, by creating a conducive legislative environment for transitioning to clean energy. Additionally, transitioning to clean energy is identified as the most effective method to mitigate greenhouse gas emissions, as long as there is societal awareness about environmental protection. Lastly, the study underscores the need for continuous and sustainable development of national and international legislations related to renewable and clean energy to support the reduction of greenhouse gas emissions, which have become a global environmental threat. Suggestions: It is recommended to implement comprehensive legislative reforms to support innovation and technological transformation in the renewable energy sector and develop policies to facilitate the implementation of renewable energy and streamline administrative processes. Enhancing environmental awareness and education programs is essential to promote interest in clean energy, while continuously evaluating and adapting legislative and regulatory standards is necessary to address evolving challenges. Furthermore, encouraging public-private partnerships and offering incentives to attract investment in clean energy projects is also encouraged.

Impact of carbon emissions in a sustainable supply chain management for a second generation biofuel

Enhancing renewable and sustainable energy development based on an options-based policy evaluation framework: Case study of wind energy technology in Taiwan

There is increased adoption of renewable energy, particularly photovoltaic (PV), as a major source of clean and environmentally friendly energy. With the wide application of PV technologies, commonly called solar panels, their appropriate maintenance and cleaning are vital for optimum PV energy generation. The research focuses on exploring the various factors attributed to influence the want, intention and need to use PV panel cleaning robots in Thailand from an institutional management perspective. The study adopted the extended C-TAM-TPB by adding three more variables - Trust in technology, awareness of renewable energy, and environmental concern. A quantitative approach was used, where primary data was collected from PV institutional users. A population sample of 411 respondents was used. The confirmatory factor analysis (CFA) came in handy in evaluating the performance model, with the study's hypotheses being evaluated by the structural equation modeling (SEM). Results indicated that most of the subjective behaviors, perceived behavioral controls, and trust in technology played a key role in determining the intention and need to use solar panel cleaning robots. Perceived usefulness was found to have significant influence towards PV panel adoption. The influence of attitude was mediated by several factors – environmental concern, renewable energy awareness, trust in technology. The study recommended that the institutional users of solar panels should consider investing in knowledge regarding perceived behavioral control, developing confidence in the use of renewable and sustainable energy, and developing trust of the renewable and sustainable energy technologies. This could be achieved through programs such as public awareness, sharing accurate information regarding solar panel cleaning robots, and providing support and after sales support. Educational initiatives to change users' attitudes toward renewable energy technologies were recommended.

Global climate change demands a rapid transition to renewable energy for sustainable development and carbon neutrality. However, existing frameworks often overlook the dynamics of renewable energy use across production, consumption, final production, and income perspectives of the economy, thereby limiting understanding of global energy transitions. This study addresses this gap using a multi regional input-output (MRIO) model to analyze renewable energy use globally from 2000 to 2021 through multiple perspectives. Our findings reveal significant disparities in renewable energy use across countries. The United States is the largest renewable energy user by four perspectives in 2021, while per capita renewable energy use reveals pronounced disparities, with heavily populated countries like China and India having notably low use levels. Furthermore, resource-exporting countries, as primary suppliers for global renewable energy, promote renewable energy use, making a substantial contribution to the energy transition. Sectoral analysis highlights the significance of electricity, gas, and water industries in renewable energy use. This study provides a comprehensive framework for analyzing renewable energy use, offering valuable insights to policymakers to accelerate equitable and sustainable energy transitions.