Energy nexusPub Date : 2025-04-22DOI: 10.1016/j.nexus.2025.100419
U. Chandrajith Samaranayake, B.D. Rohitha Prasantha, K.A.K. Lakmal Chandrasiri
{"title":"Assessment of ultrasound treatment potential to induce ripening in Seeni and Ambul banana varieties (Musa spp.)","authors":"U. Chandrajith Samaranayake, B.D. Rohitha Prasantha, K.A.K. Lakmal Chandrasiri","doi":"10.1016/j.nexus.2025.100419","DOIUrl":"10.1016/j.nexus.2025.100419","url":null,"abstract":"<div><div>The aim of this study was to investigate the effect of ultrasound as pre-treatments on the ripening rate of the <em>seeni</em> and <em>ambul</em> banana cultivars in Sri Lanka. Ultrasound treatment of 25 kHz frequency was applied to physiologically matured, freshly harvested <em>seeni</em> and <em>ambul</em> banana fruits for different time periods (0, 10, 20 and 30 min) and analyzed for the storage period o f 4 days at 27±1 °C and 80±5 % relative humidity. The changes in fruit firmness (N), Brix value, pH, pee l color, weight reduction (%), carbon dioxide (CO<sub>2</sub>) production rate (mL Kg<sup>-1</sup> h<sup>-1</sup>) and antioxidant activity were investigated. The pulp pH and fruit firmness of the banana samples significantly decreased (<em>P</em> < 0.05) with the time of ultrasound treatment between 10–30 min while the lowest values were noted at 30 min treated banana samples. The CO<sub>2</sub> production rates and Brix values of banana samples significantly increased (<em>P</em> < 0.05) with the storage time compared to the control sample. The highest percentage of weight reductions was recorded in the 30 min ultrasound-treated banana samples compared to the control samples. At 30 min of ultrasound treatment time, the antioxidant activity of the <em>seeni</em> and <em>ambul</em> banan as increased fr om 12.1–57.7 % and 78.5–95.4 % respectively. Storage time and ultrasound treatment had a significant effect (<em>P</em> < 0.05) on color parameters L* and b* (<em>P</em> < 0.05) during banana ripening. Results showed that the early appearance (1–2 days) of yellow color on the peel of 30 min ultrasound treated <em>seeni</em> and <em>ambul</em> banana fingers compared to the control banana fingers. The results of this study suggested that the ultrasound treatment may provide an alternative method to enhance the rate of ripening and maintain the quality of <em>seeni</em> and <em>ambul</em> banana cultivars.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100419"},"PeriodicalIF":8.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143879190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-04-22DOI: 10.1016/j.nexus.2025.100425
Mohammad Javad Ranjbar, Hossein Yousefi, Mahmood abdoos, Fatemeh Razi Astaraei, Mohammad Amin Vaziri Rad
{"title":"Addressing water scarcity and energy sustainability through PV-desalination systems: A case study on the southern coast of Iran","authors":"Mohammad Javad Ranjbar, Hossein Yousefi, Mahmood abdoos, Fatemeh Razi Astaraei, Mohammad Amin Vaziri Rad","doi":"10.1016/j.nexus.2025.100425","DOIUrl":"10.1016/j.nexus.2025.100425","url":null,"abstract":"<div><div>Water scarcity, particularly in tropical climates, has made the development of alternative solutions, such as desalination technologies, inevitable. However, challenges such as energy supply, the cost of produced water, and the emissions associated with the power supply method must be optimized to make desalination plants more cost-effective and environmentally friendly. This study provides a comprehensive technical, economic, and environmental assessment of a photovoltaic-reverse osmosis (PV-RO) desalination plant in a tropical climate. By analyzing different installation capacities, the developed model aims to maximize the solar fraction (SF) and minimize energy costs under the economic conditions of Iran. For the case study of the RO plant, two load profiles were analyzed, with results showing that operating the RO plant with higher capacities during daylight hours leads to better economic and environmental performance compared to 24-hour operation with a mid-range capacity. In the optimum scenario, the results show that by installing 14.75 MW of PV panels, the demand for 25,000 m³ of fresh water can be met, while the total renewable energy production equals the energy demand of the desalination plant. The SF of this grid-connected system reaches 92 %, and by selling the 8 % excess power to the grid, the final levelized cost of energy (LCOE) is reduced to $0.062/kWh, with the levelized cost of water (LCOW) reaching less than $0.35/m³. Additionally, the proposed system reduces grid dependency by >80 %, preventing over 205,000 tons of CO₂ emissions over 20 years of freshwater supply.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100425"},"PeriodicalIF":8.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Examining downdraft gasifiers at various equivalent ratios using deoiled cashew nut shells as gasification feedstock","authors":"H.Y. Shrirame , A.G. Mohod , Y.P. Khandetod , K.G. Dhande","doi":"10.1016/j.nexus.2025.100420","DOIUrl":"10.1016/j.nexus.2025.100420","url":null,"abstract":"<div><div>Cashew nut shell waste generated by cashew processing enterprises is disposed of in open land or burned in a semi-open pit, causing environmental issues. The current study examines gasification as an alternate method of reclaiming energy from cashew nut shell waste. This paper discusses an experimental investigation of downdraft gasifier that was conducted for various Equivalence Ratios (ER). The five different ER (0.25–0.45) were selected to investigate a 12.79 kW downdraft gasifier performance using deoiled cashew nut shell (DCNS) as feedstock. The fuel consumption rate (FCR), specific gasification rate (SGR), gas production rate (GPR) and power rating (PR) were observed in the range of 3.17–4.00 kg h<sup>-1</sup>, 8.82–11.11 kg m<sup>-2</sup> h<sup>-1</sup>, 4.49–7.93 m<sup>3</sup> h<sup>-1</sup> and 8.69–10.99 kW respectively with the increase in ER (0.25–0.45). Whereas gasifier operating time and tar content were decreased with the increase in ER. The maximum combustion efficiency, cold gasification efficiency and hot gasification efficiency of downdraft gasifier were found to be 51.87 %, 39.85 % and 42.07 % respectively at 0.35 ER. The higher heating value (HHV) of producer gas under the optimum operating conditions i.e. at 0.35 ER is about 4.79 MJ Nm<sup>-3</sup>.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100420"},"PeriodicalIF":8.0,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-03-23DOI: 10.1016/j.nexus.2025.100404
Rajan Ray , Etienne Le Riche , Robert Gordon , Andrew VanderZaag
{"title":"Considering the role of the energy grid mix on indirect water use in dairy barns","authors":"Rajan Ray , Etienne Le Riche , Robert Gordon , Andrew VanderZaag","doi":"10.1016/j.nexus.2025.100404","DOIUrl":"10.1016/j.nexus.2025.100404","url":null,"abstract":"<div><div>Water use is an important environmental concern for the dairy sector. There are two kinds of water use in the dairy sector, direct and indirect. Electricity generation (e.g., cooling water, evaporation, etc.) is an indirect use of water and a significant contributor to the overall water budget depending on how electricity is generated. In Canada, the dairy industry is distributed across 10 provinces each with a wide range of electricity generation sources in their grid mix, making it an interesting case study. For a dairy farm that uses 1021 kWh cow<sup>-1</sup> y<sup>-1</sup> (9.4 – 10.6 kWh per 100 kg milk, depending on the province), the average water use related to generating electricity was estimated to be 3.48 L kg<sup>-1</sup> milk (range: 1.40 – 5.77 L kg<sup>-1</sup>, depending on the electricity grid). Energy conservation technologies could reduce electricity use by as much as 30 % and thus reduce water use by 1.04 L kg<sup>-1</sup> milk on average (range: 0.42 – 1.73 L kg<sup>-1</sup>). Installing an on-farm solar array (0.40 kWp cow<sup>-1</sup>; i.e. one 400-watt solar panel per cow) could lower grid-electricity-related water use by 35 – 51 % (or by 0.57 – 2.71 L kg<sup>-1</sup>). Solar array sized with the capacity to reach net-zero electricity is feasible and can eliminate grid-electricity-related water use. This study highlights that dairy farms can achieve substantial water savings by strategically using electricity conservation and renewables, with the magnitude depending on the electricity grid mix, a relationship that has yet to be analyzed in current literature.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100404"},"PeriodicalIF":8.0,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-03-18DOI: 10.1016/j.nexus.2025.100409
C. Yupanqui , N. Dias , M.R. Goodarzi , S. Sharma , H. Vagheei , Rabi Mohtar
{"title":"A review of water-energy-food nexus frameworks, models, challenges and future opportunities to create an integrated, national security-based development index","authors":"C. Yupanqui , N. Dias , M.R. Goodarzi , S. Sharma , H. Vagheei , Rabi Mohtar","doi":"10.1016/j.nexus.2025.100409","DOIUrl":"10.1016/j.nexus.2025.100409","url":null,"abstract":"<div><div>The Water-Energy-Food (WEF) Nexus has emerged as an innovative platform to assist with sustainable resource management. This review paper describes the WEF Nexus evolution during the last century and highlights its advances in tools, frameworks, and concepts. The paper critically assesses several aspects of the WEF Nexus including the milestones, major WEF frameworks, tools and models developed over the last twenty years, different WEF Nexus conceptualizations, and the significant support and investments reported in the 21st century. The relationship between the WEF Nexus and the Sustainable Development Goals (SDGs) is analyzed based on Nexus research studies, regional strategies or national programs were achieving WEF components lead to targeting some specific SDGs. The analysis of the principal WEF Nexus challenges and gaps emphasizes nature-driven crises such as water scarcity, energy shocks, and food shortages. Finally, the paper proposes a new business model that aims to quantify the water, energy, and food resources by country. The conceptual framework develops a WEF security index based on internationally recognized metrics and includes disaster risk and climate change, as well as trade-off as threats and contingency factors that are considered in the model. This review proposes a novel platform to assess the WEF security index per country as a pathway to contribute to SDGs 6,7,2,8 and 13.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100409"},"PeriodicalIF":8.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cost-effective and sustainable heating solutions for indoor swimming pools: A comparative study and LCOH assessment of PV-heat pumps and solar thermal collectors","authors":"Mohamed El Mardi , Amine Allouhi , Yassine Rami , Kheira Anissa Tabet Aoul","doi":"10.1016/j.nexus.2025.100414","DOIUrl":"10.1016/j.nexus.2025.100414","url":null,"abstract":"<div><div>This study presents a comprehensive technoeconomic analysis of three water heat system configurations to satisfy the heating requirements of an indoor swimming pool in Fez, Morocco. The assessed configurations included a flat-plate solar collector with a diesel boiler backup, evacuated-tube collector with a diesel boiler backup, and grid-connected photovoltaic (PV) plant combined with a heat pump. The analysis emphasizes multicriteria evaluation and sensitivity analyses as distinguishing features. The analytical results demonstrated that the configuration with a grid-connected PV plant combined with a heat pump outperformed the other configurations in terms of economic viability. This configuration exhibited a short payback period of 4.415 years, indicating a rapid return on investment. The levelized cost of heating (LCOH) for this configuration was 0.0258 $/kWh, highlighting its cost-effectiveness. However, this configuration allowed avoiding CO<sub>2</sub> emissions up to 35.63 tons/year, which is considerably lower than solar thermal heating systems. Sensitivity analyses revealed that the coefficient of performance (COP), diesel cost, and collector/panel cost were critical factors influencing the performance and economic feasibility of the compared systems. Optimizing the COP and efficiency of heating systems, combined with lower technology costs, can significantly improve the payback period, reduce the levelized cost of heat (LCOH), and enhance CO₂ emissions mitigation.</div><div>Expanding the analysis to other Moroccan cities helped identify optimal locations for solar heating systems. Errachidia emerged as the most promising site, offering the best energy, economic, and environmental performance due to its exceptional solar energy resources</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100414"},"PeriodicalIF":8.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143705556","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-03-18DOI: 10.1016/j.nexus.2025.100416
Vahid Rahimkhoei , Masood Hamadanian , Karrar Hazim Salem , Lilian Qasim Alwan Al-Budair , Masoud Salavati-Niasari
{"title":"Synthesis and characterization of Sm2FeMnO6 double perovskites nanoparticles supported on graphitic carbon nitride as photocatalyst for the degradation of organic dyes under simulated sunlight light","authors":"Vahid Rahimkhoei , Masood Hamadanian , Karrar Hazim Salem , Lilian Qasim Alwan Al-Budair , Masoud Salavati-Niasari","doi":"10.1016/j.nexus.2025.100416","DOIUrl":"10.1016/j.nexus.2025.100416","url":null,"abstract":"<div><div>A novel synthesis program was employed to produce a Sm<sub>2</sub>FeMnO<sub>6</sub>/graphitic carbon nitride (SFMO/g-C<sub>3</sub>N<sub>4</sub>) nanocomposite. The nanocomposite was created utilizing varying proportions of the stabilizing agent: Propylene glycol (PG), various stabilizing agents, and diverse calcination temperatures. The shape, size, and purity of SFMO nanoparticles were controlled using these factors. The optimized sample was chosen using different physical equipments such as X-ray diffraction (XRD) and scanning electron microscopy (SEM). The study focused on understanding magnetic and optical properties and their role in photocatalytic applications. Based on the Diffuse Reflectance Spectroscopy (DRS) results, the SFMO nanoparticles possess a band gap of 1.52 eV. An examination was conducted to determine the photocatalytic effectiveness of SFMO and SFMO/g-C<sub>3</sub>N<sub>4</sub> nanocomposite in degrading diverse anionic and cationic pollutant models. The effectiveness of SFMO nanoparticles in degrading particular dyes (Eriochrome black T (EBT), Methyl orange (MO), Rhodamine B (RhB), and Malachite green (MG)) when subjected to visible light was evaluated. Various factors, including the type of dye, quantity of catalyst, dye concentration, pH levels, contact time, and scavengers, were investigated to assess the effectiveness of photocatalysis. The results showed that these nanoparticles could remove about 84.87 % of Methyl orange.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100416"},"PeriodicalIF":8.0,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684144","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-03-17DOI: 10.1016/j.nexus.2025.100407
Saleh Abu Dabous, Fatma Hosny
{"title":"A review of building envelope retrofitting methods for improving energy efficiency, aesthetic, and indoor environmental quality","authors":"Saleh Abu Dabous, Fatma Hosny","doi":"10.1016/j.nexus.2025.100407","DOIUrl":"10.1016/j.nexus.2025.100407","url":null,"abstract":"<div><div>Upgrading building envelopes with high-performance materials and technologies is essential in retrofitting efforts to improve energy efficiency, aesthetics, and indoor environmental quality (IEQ). Although there has been a significant increase in such interventions, comprehensive studies on their synergistic effects remain limited. This research conducts a holistic review of building envelope retrofitting techniques, examining their role in enhancing not only energy performance but also the aesthetic value and IEQ of buildings. This research reviewed 391 studies to examine global trends in envelope retrofit techniques over the past decade, with a particular focus on advancements in glazing systems, wall cladding, and solar shading. Findings indicate a surge in interest, with 70 % of studies published in the last five years. The majority of these studies (55 %) concentrate on reducing energy consumption, highlighting a shift towards more energy-efficient buildings. Aesthetic improvements, especially in historical buildings, were a significant concern in 15 % of the studies, while enhancements in IEQ were explored in 11 % of the studies. In addition, wall system retrofits were the most common (47 %), followed by glazing (37 %) and shading (16 %). Tools like Building Information Modeling (BIM), Energy Modeling Software such as EnergyPlus and DesignBuilder, and Life Cycle Cost Analysis (LCCA) were frequently employed to optimize retrofit strategies and improve decision-making. Integrated strategies combining multiple retrofit procedures accounted for 13 % of the reviewed studies. The benefits of retrofitting include not only enhanced energy efficiency and aesthetics but also improved indoor environmental quality, which contributes to occupant comfort and health. Future studies should delve into the interaction between retrofit measures and occupant behavior to develop more effective retrofit strategies.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100407"},"PeriodicalIF":8.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Design and efficiency improvement of eco-conscious Sr3PBr3 and Sr3NCl3 double perovskite solar cells with IGZO and Cu2O as ETL and HTL","authors":"Md.Shamim Reza , Avijit Ghosh , Md.Selim Reza , Shafaiet Newaz Wornob , Sabina Sultana","doi":"10.1016/j.nexus.2025.100417","DOIUrl":"10.1016/j.nexus.2025.100417","url":null,"abstract":"<div><div>This research presents a new design for double perovskite solar cells (DPSCs) utilizing Sr<sub>3</sub>PBr<sub>3</sub> and Sr<sub>3</sub>NCl<sub>3</sub>, which is noted for its enhanced stability in comparison to conventional single perovskite materials, thereby making it ideal for the development of ultra-thin, very efficient solar cells. The proposed architecture features a distinctive arrangement: Al/FTO/IGZO/Sr<sub>3</sub>PBr<sub>3</sub>/Sr<sub>3</sub>NCl<sub>3</sub>/Cu<sub>2</sub>O/Au. The study provides an in-depth theoretical examination of the energy band structure, defect properties, and quantum efficiency of the DPSC, focusing on the optimized photovoltaic (PV) specifications. Remarkably, the optimized DPSC achieves a power conversion efficiency (PCE), an open-circuit voltage (<em>V<sub>OC</sub></em>), a short-circuit current density (<em>J<sub>SC</sub></em>), and a fill factor (FF) of 32.46 %, 1.40 V, 26.51 mA/cm<sup>2</sup>, 87.26 %. Whereas without HTL, the PV parameters are PCE of 30.34 %, <em>V<sub>OC</sub></em> of 1.27 V, <em>J<sub>SC</sub></em> of 26.45 mA/cm<sup>2</sup>, and FF of 90.14 %. The impressive efficiency of 32.46 % is due to better charge extraction, improved alignment between the absorber and transport layers, and reduced losses from recombination. The double perovskite absorber's special characteristics, along with accurate doping and defect technology, allow for effective charge transfer and collection. Additionally, the research explores the influence of various factors such as temperature, interface defects, rates of carrier production and recombination, and the work functions of return contact materials on performance. The results underscore the significant potential of Sr<sub>3</sub>PBr<sub>3</sub> and Sr<sub>3</sub>NCl<sub>3</sub>, especially when combined with the Cu<sub>2</sub>O HTL, in effectively reducing sheet resistance and enhancing overall solar cell efficiency. Validation of the design was performed using SCAPS-1D simulation software.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100417"},"PeriodicalIF":8.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Energy nexusPub Date : 2025-03-17DOI: 10.1016/j.nexus.2025.100405
Oliver O. Apeh, Nnamdi I. Nwulu
{"title":"Enhancing transparency and efficiency in green energy management through blockchain: A comprehensive bibliometric analysis","authors":"Oliver O. Apeh, Nnamdi I. Nwulu","doi":"10.1016/j.nexus.2025.100405","DOIUrl":"10.1016/j.nexus.2025.100405","url":null,"abstract":"<div><div>Blockchain is evolving as a crucial technology in protecting the future outlook of energy systems and global economic competition. As a result of the huge rise in industrial pollution, it has gained extensive consideration from economic establishments, green energy supply organizations, tech designers, governments, and researchers. Stakeholders from various fields identify the potential of blockchain integration with green energy as a tool to transform different activities in the sector, such as reducing the grid's major carbon emissions, freeing cyber theft and generating novelty. Moreover, blockchain system is tamper-proof, transparent, and has the prospect of addressing novel business solutions, mostly when integrated with smart contracts. In this study, 510 documents from 2017 to 2024 were selected and visualized using CiteSpace software and bibliometric approaches to analyze the research field's growth base, hotspot areas, country and their policy implementations, collaborative groups, and evolutionary trends of blockchain base within energy networks. It investigates the existing literature to acknowledge the progress made in the field. The key findings show that basic research on blockchain technology in the energy sector is fast growing with time, showing that integrating blockchain and green energy is an emerging research field. Out of 742 countries and regions, China leads with 89 publications, recording 24.7%, followed by India with 78 publications, accounting for 21.7%, and the United States with 76 publications, accounting for 21.1%. Among them, China's collaborations rely mainly on renewable energy management. Moreover, the practical application cases corresponding to research hotspots are mostly located in developed countries, especially in the United States, the European Union, and Australia. The research gaps in blockchain-based green energy applications are noticed in green certificate trading, micro-grid energy market, technology and policy, energy management, as well as potential trends in energy internet, energy systems, and green power trading. The findings of this paper will assist researchers in gaining a vast knowledge of the present research in the area of blockchain and green energy and identify future research trends in the field. Hence, this will boost the knowledge of energy expansion among energy trading experts, seize possible opportunities, and offer beneficial insights for the government to introduce blockchain advancement and green energy trading policies.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100405"},"PeriodicalIF":8.0,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143684149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}