Renewable Energy最新文献

{"title":"Alternative non-optimal orientations in highly PV self-consumption integration: Exploring Spanish prosumers as a case study","authors":"Felipe García-Suso ,&nbsp;Angel Molina-García ,&nbsp;Ana Fernández-Guillamón ,&nbsp;María C. Bueso","doi":"10.1016/j.renene.2025.123987","DOIUrl":"10.1016/j.renene.2025.123987","url":null,"abstract":"<div><div>The urgency to mitigate the greenhouse effect and achieve sustainable production systems is driving the exploration of novel clean energy options. Indeed, some European nations are currently undergoing an energy transition characterized by a growing emphasis on renewable energy sources, with a particular focus on promoting the adoption of self-consumption photovoltaic systems. Among these, solar energy stands out as a particularly promising candidate due to its inherent lack of pollution. However, Photovoltaic (PV) energy is generally not considered a dispatchable resource due to its inherent limitations, including seasonal and daily fluctuations in output, as well as dependence on weather conditions. Therefore, and aiming to ensure that PV installations from prosumers on the distribution grid receive fair compensation for the value they provide to the system, reimbursement mechanisms should be designed to reflect the dynamic value of their electricity production. Under this framework, this paper describes and assesses the trade-off between annual economic profits and potential reductions in electricity generation by estimating the most appropriate PV installation orientations. To analyze future power systems with potentially high PV integration into households, different real PV installations representing current Spanish prosumer profiles are included as case study, assessing 2640 different generation profiles. Indeed, Spain exemplifies a remarkable case study in the widespread adoption of photovoltaic (PV) systems over the past few decades. This surge can be attributed to the relative ease of installation and competitive pricing of PV technology. Notably, the installed capacity of PV power in Spain has witnessed impressive growth, expanding by nearly 30% in the past year alone. Results provide numerous benefits for such specific non-optimal orientations. These findings, confirmed after a full year of operation, include an increase in annual economic benefits in spite of a lower energy production compared to the optimal-producing orientation.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 123987"},"PeriodicalIF":9.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental study on ejector performance and control strategy optimization in fuel cell systems through heat exchanger positioning","authors":"Yiyuan Huang ,&nbsp;Miaohua Huang ,&nbsp;Maji Luo ,&nbsp;Kun Jiang ,&nbsp;Hao Huang ,&nbsp;Faping Tu ,&nbsp;Lusong Wang","doi":"10.1016/j.renene.2025.124037","DOIUrl":"10.1016/j.renene.2025.124037","url":null,"abstract":"<div><div>Ejectors are critical components of fuel cells in renewable energy systems. While previous research has primarily focused on optimizing ejector structural parameters to improve their entrainment performance, issues related to liquid water management and control strategies have not been adequately addressed. Furthermore, evaluating the entrainment ratio and expanding the working range of ejectors presents significant challenges. This study integrates a heat exchanger at key ejector positions to mitigate these challenges. Additionally, we propose a novel mathematical model to evaluate the sensitivity of three parameters. Experimental results show that elevated ejector outlet pressure negatively impacts the entrainment ratio, whereas increased secondary flow inlet pressure significantly improves it. At the rated power of 120 kW, the anode stoichiometry ratio increases by 14.2 % and 12.3 % for the secondary and primary flow inlet heat exchanger configurations respectively, compared to the reference configuration with the heat exchanger at the ejector outlet. However, positioning at the secondary flow inlet limits the operational range of the ejector to 23 %–100 % of the rated power condition, whereas the primary flow inlet configuration significantly extends this range to 7 %–100 % of the rated power load. Finally, we propose a constant anode stoichiometry ratio control strategy for the hydrogen recirculation system.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 124037"},"PeriodicalIF":9.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Drivers of energy transition: Do patent innovations and women political participation matters?","authors":"Shujaat Abbas ,&nbsp;Victoria Olushola Olanrewaju ,&nbsp;Babatunde Sunday Eweade","doi":"10.1016/j.renene.2025.124045","DOIUrl":"10.1016/j.renene.2025.124045","url":null,"abstract":"<div><div>By unravelling the dynamic synergy of patent‐based technological innovation, women's political representation, and democratic governance, this study illuminates a potent blueprint for propelling renewable energy consumption and forging an inclusive, sustainable energy future. Therefore, this study examines the impact of patent‐based technological innovation, women's political representation, economic growth, and democratic governance on U.S. renewable energy consumption from 1997Q1 to 2022Q4. It employs wavelet‐quantile techniques—wavelet quantile cointegration and wavelet quantile‐on‐quantile regression—to analyze these relationships. Our findings reveal that, regardless of time horizon or distributional quantile, higher levels of democratic governance and stronger economic growth are consistently associated with greater renewable energy consumption. Similarly, increases in women's representation in politics and surges in patent‐driven innovation yield positive impacts on renewable energy adoption across all quantiles and periods. The study formulate policy based on these findings.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 124045"},"PeriodicalIF":9.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144702539","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study on the Relationship between Lifetime and Flow Channel in Proton Exchange Membrane Fuel Cells","authors":"Yang Yu ,&nbsp;Qinghua Yu ,&nbsp;RunSen Luo ,&nbsp;Sheng Chen ,&nbsp;Jiebo Yang ,&nbsp;Fuwu Yan","doi":"10.1016/j.renene.2025.124057","DOIUrl":"10.1016/j.renene.2025.124057","url":null,"abstract":"<div><div>The modification of flow channel shape in proton exchange membrane fuel cells (PEMFCs) has been shown to effectively enhance power density and overall performance. However, there remains a significant gap in understanding how these shape alterations affect the performance degradation of the membrane electrode assembly (MEA) and the underlying mechanisms. This study comprehensively considers key degradation factors of the MEA, including catalyst layer (CL) carbon corrosion, platinum (Pt) dissolution, sedimentation, oxidation, and proton exchange membrane (PEM) degradation mechanisms. Furthermore, we explore the structural changes induced by degradation and establish a three-dimensional performance mechanism model for PEMFCs based on these findings. Finally, we analyze the effects of varying flow channel widths on the MEA degradation mechanisms and their relationships with performance improvements. The study found that the established three-dimensional physical model for the performance degradation of PEMFCs fits the degradation process well during the 500 h simulation. Additionally, variations in channel width affect performance degradation; specifically, wider channels lead to more significant performance improvements. However, at a width of 1.4 mm, the rate of performance enhancement begins to slow down, while the degradation rate noticeably accelerates. When the width reaches 1.6 mm, the rate of carbon corrosion significantly increases, whereas at a width of 1.2 mm, the impact on the proton exchange membrane is minimal.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 124057"},"PeriodicalIF":9.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144711195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Tidal energy resource characterization measurements at cook inlet’s east foreland: Velocity and turbulence","authors":"James R. McVey ,&nbsp;Levi Kilcher ,&nbsp;Zhaoqing Yang","doi":"10.1016/j.renene.2025.123990","DOIUrl":"10.1016/j.renene.2025.123990","url":null,"abstract":"<div><div>To characterize tidal current and turbulence at a top tidal energy site off the East Foreland in Cook Inlet, Alaska, United States, three moorings were deployed for two months between July and August 2021, and a transect survey was conducted over the course of two tidal cycles at the end of the deployment period. Measurements of velocity and turbulence were then analyzed to better understand the site’s hydrodynamics and power potential. Analysis reveals that swift, north-flowing flood currents peak at 4 m/s, while south-flowing ebb currents reach just over 3 m/s. Turbulence intensity ranges from 23% at the seafloor to 8% near the surface, and the presence of the foreland creates more intense turbulence near-shore during ebb tide than flood. Power availability at the site could be as high as 720 MW, or 13 kW/m<span><math><msup><mrow></mrow><mrow><mn>2</mn></mrow></msup></math></span>, though the energy available to a marine energy device will be smaller than this estimate because of water-to-wire efficiency and wake losses. The results from this measurement campaign will inform the validation of a high-resolution tidal hydrodynamic model, as well as early tidal energy projects that are beginning to move beyond the prototyping and demonstration stages to full-scale deployments.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 123990"},"PeriodicalIF":9.1,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regenerative hydrogen energy storage modelling for northern microgrid energy design","authors":"Sophie Janke ,&nbsp;Curran Crawford ,&nbsp;Anthony Truelove ,&nbsp;Martha Lenio ,&nbsp;Behzad Hashemi","doi":"10.1016/j.renene.2025.123979","DOIUrl":"10.1016/j.renene.2025.123979","url":null,"abstract":"<div><div>This work aims to address barriers and unknowns in green hydrogen energy storage modelling for remote northern communities. This hydrogen model exceeds the capabilities of existing models by providing detail, flexibility, and transparency. In addition to electrical energy tracking, this includes degradation modelling, water management, compression, and thermal energy accounting which considers local environmental temperature. The integration of these features within a fully developed microgrid electricity model is unique to this model and fills a critical gap in the field of microgrid energy storage modelling. To showcase these novel model capabilities, an arctic community case study was conducted to provide generally conclusive insight for the field of northern energy planning. In this case study, the baseline comparison of this model against industry standard software resulted in a difference of 10% in hydrogen utilization and 0.4% in renewable energy captivation due to differing dispatch protocol algorithms. Results also revealed wind as a superior renewable energy source for hydrogen energy storage integration and drawbacks surrounding seasonal green hydrogen storage. These outcomes successfully present novel insights on green hydrogen’s potential role in decarbonizing remote communities in Canada, along with a valuable model for its exploration, by incorporating important practical systems aspects.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 123979"},"PeriodicalIF":9.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel auxin and wither mechanism combination optimization algorithm for maximum power point tracking of PV systems under partial shading","authors":"Pengcheng Hu,&nbsp;Abhisek Ukil","doi":"10.1016/j.renene.2025.123911","DOIUrl":"10.1016/j.renene.2025.123911","url":null,"abstract":"<div><div>In photovoltaic (PV) systems, maximum power point tracking (MPPT) is critical for optimizing energy harvest efficiency. When operating under partial shading conditions (PSC), traditional MPPT algorithms often fail to locate the global maximum power point due to multiple local peaks in the power-voltage (P-V) characteristic curve. This paper introduces a novel auxin and wither mechanism combination optimization (AWMCO) algorithm with three key innovations: a dynamic dual-mode tracking mechanism that balances global and local exploration based on the multi-peak characteristics of the P-V curve under PSC, an adaptive step size strategy that dynamically adjusts according to local gradient characteristics, and a position-based early stopping mechanism with convergence guarantees that eliminates redundant iterations. Further statistical validation on benchmark functions demonstrates AWMCO outperforming other metaheuristics, achieving superior mean accuracy and robust consistency. Comprehensive validation through both simulation and hardware experimentation demonstrates AWMCO’s exceptional performance—reducing tracking time by up to 81.6% compared to conventional meta-heuristic algorithms while maintaining tracking efficiency as high as 99.51% in real PV panels and reaching 99.99% in PV simulator tests. Dynamic load testing confirms the algorithm’s robustness under rapidly changing operating conditions, with recovery times of just 0.20–0.22 s following load transitions, outperforming comparative methods by up to 73.7%.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 123911"},"PeriodicalIF":9.1,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144722522","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electric vehicles attractiveness in emerging country (Brazil) considering policy and regulation towards energy transition","authors":"Nathalia Hidalgo Leite ,&nbsp;Cindy Paola Guzman Lascano ,&nbsp;Hugo Gabriel Valente Morais ,&nbsp;Luiz Carlos Pereira da Silva","doi":"10.1016/j.renene.2025.124041","DOIUrl":"10.1016/j.renene.2025.124041","url":null,"abstract":"<div><div>Transportation sector is largely responsible for global CO₂ emissions, negatively impacting the environment and human health. In developing and emerging economies Electric Vehicles (EVs) market share is still incipient. Therefore, this research evaluates EV attractiveness in relation to Internal Combustion Vehicles (ICVs) for Brazil, an emerging country with a consolidated market of alternative fuels and a regulated system of electricity compensation. The objective is to bring information that can speed up the transition process towards sustainable mobility. The methodology contemplates the development of a comprehensive Total Cost of Ownership (TCO) model, including the country's specificities in terms of biofuels and net-metering. The results show that EVs still depend on government and manufactures subsidies to be cost-competitive in Brazil. Finally, in the last year, the combination of government subsidies (electricity and tax reduction) and strong competitive prices from some manufactures have contributed to boost EV adoption in the country. In this research, the Green Premium (GP) value or “energy transition costs” between ICVs and BEVs, considering medium level automobiles is - R$ 23,000 for comparable and - R$ 73,000 for best-selling data, showing the cost-competitiveness of electric in relation to combustion vehicles in the country.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 124041"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144685721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Parametric vertical photovoltaic system: Fibonacci methodology applied to solar trees design","authors":"Lohane Barcelos Palaoro,&nbsp;Daniela Pawelski Amaro Marins,&nbsp;Anderson Azevedo Fraga,&nbsp;Helder Roberto de Oliveira Rocha,&nbsp;Cristina Engel de Alvarez,&nbsp;Marcelo Eduardo Vieira Segatto","doi":"10.1016/j.renene.2025.123960","DOIUrl":"10.1016/j.renene.2025.123960","url":null,"abstract":"<div><div>This study presents a novel Fibonacci-inspired solar tree design to optimize energy efficiency in urban environments while addressing the growing demand for sustainable energy solutions. The objective was to propose a project methodology for Solar Trees, one that can adapt to diverse contexts and enhance the viability of these structures as source of renewable energy within urban landscapes. The research used Rhinoceros 7 and Grasshopper to create a base model, parametrically adjust key design parameters, and simulate solar irradiation through the Ladybug plug-in. The optimized solar tree design achieved an annual solar energy incidence of 84,017 kWh and an irradiation of 3,222 kWh/m²/year, surpassing traditional flat PVS, which would generate only 68,084 kWh/year with an irradiation of 2,611 kWh/m²/year. Comprising 21 modular photovoltaic leaves made from mono-crystalline silicon, the design meets technical energy requirements and offers aesthetic and landscaping benefits in urban settings. This work underscores the importance of a multidisciplinary approach, merging architecture, energy efficiency, and environmental science to propose feasible solutions for contemporary urban challenges. The findings indicate that the proposed solar tree design fulfills energy demands and enhances public spaces, challenging conventional perceptions of photovoltaic systems as fragmented and visually unappealing.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 123960"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144714092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"FAGeI2Br/CsGeI2Br: Promising superlattice lead-free perovskite for photovoltaic technology","authors":"F. Elfatouaki ,&nbsp;O. Farkad ,&nbsp;A. El Mouncharih ,&nbsp;M. Alla ,&nbsp;R. Takassa ,&nbsp;S. Hassine ,&nbsp;S. Giusepponi ,&nbsp;E.A. Ibnouelghazi ,&nbsp;A. Outzourhit ,&nbsp;D. Abouelaoualim","doi":"10.1016/j.renene.2025.124021","DOIUrl":"10.1016/j.renene.2025.124021","url":null,"abstract":"<div><div>This work investigates the structural, optoelectronic, and photovoltaic properties of the lead-free superlattice hybrid Ge-perovskite FAGeI<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Br/CsGeI<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>Br, highlighting its potential for photovoltaic applications. Density Functional Theory (DFT) calculations were employed to optimize the crystal structure and evaluate its bandgap, optical properties, and thermodynamic stability. The results reveal a direct bandgap of 1.50 eV, a low exciton binding energy of 36 meV, and strong absorption in the visible spectrum, indicating the material’s suitability for efficient solar energy conversion. Additionally, numerical simulations using SCAPS-1D were performed to assess the performance of perovskite solar cells (PSCs) incorporating this superlattice as the absorber layer. Device architectures utilizing SnO<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> as the electron transport layer (ETL) and Cu<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O as the hole transport layer (HTL) achieved a high power conversion efficiency (PCE) of 32.96%. This study provides a solid theoretical foundation for future experimental research on this novel material.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"256 ","pages":"Article 124021"},"PeriodicalIF":9.0,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144680536","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}