{"title":"A comparative study of the geographical latitude impact on optimal heliostat arrangements","authors":"Jinwei Ye, Caitou He, Qilong Bao","doi":"10.1016/j.seta.2026.104965","DOIUrl":"10.1016/j.seta.2026.104965","url":null,"abstract":"<div><div>Central receiver systems (CRS) are popular in advancing solar thermal power generation due to their high temperatures and scalability. This study presents an investigation of the optimal heliostat field distribution patterns across different latitudes. The optimal field is defined as the arrangement that requires the minimum number of heliostats to meet the rated power generation capacity, thereby reducing the total field area and investment of the project. To this end, a novel optical evaluation metric is proposed and a state-of-the-art optical modeling process is adopted. The optimal heliostat fields are efficiently generated through a “Ranking-Screening” method, in which the top-performing heliostats are selected and the field construction investments are thereby reduced. Extensive experiments under varying conditions reveal some regular trends of the influence of factors such as tower height, latitude, altitude and rated power on the optimal layout of the heliostat fields.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104965"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147657851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J.A. Flores Cayuela , I. Fernández García , J.A. Rodríguez Díaz
{"title":"Corrigendum to “Sizing of large-scale photovoltaic irrigation systems. Model for environmental and economic optimisation of grid-hybrid systems” [Sustain. Energy Technol. Assess. 86 (2026) 104871]","authors":"J.A. Flores Cayuela , I. Fernández García , J.A. Rodríguez Díaz","doi":"10.1016/j.seta.2026.104932","DOIUrl":"10.1016/j.seta.2026.104932","url":null,"abstract":"","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104932"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147710709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
G. Srinivasa Sudharsan , N. Karthikeyan , S.G. Rahul , Anuj Kumar
{"title":"Corrigendum to “Active power control in horizontal axis wind turbine considering the fatigue structural load parameter using psuedo adaptive-model predictive control scheme” [Sustain. Energy Technol. Assess. 57C (2023) 103166]","authors":"G. Srinivasa Sudharsan , N. Karthikeyan , S.G. Rahul , Anuj Kumar","doi":"10.1016/j.seta.2026.104929","DOIUrl":"10.1016/j.seta.2026.104929","url":null,"abstract":"","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104929"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147710710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development strategy for sustainable energy generation: synergistic effects and ash fusion control in rattan biomass – brown coal co-combustion","authors":"Bing Chen, Manyi Zhang, Zhe Sun, Peng Li, Yaqiang Yuan, Jihui Liu, Wenlong Zhan, Zhijun He","doi":"10.1016/j.seta.2026.104964","DOIUrl":"10.1016/j.seta.2026.104964","url":null,"abstract":"<div><div>Within the framework of sustainable energy development, the co-combustion of rattan and lignite shows significant potential. The synergistic effect and ash melting behavior during this process are key factors governing of biomass utilization efficiency. Thermogravimetric analysis and ash fusion tests were conducted to investigate the co-combustion characteristics and ash melting behavior of the two fuels. The results indicate that rattan exhibits superior combustion performance to brown coal, primarily due to its high volatile content and low degree of coalification. Blending rattan enhances the combustion properties of lignite and generates a synergistic effect during co-combustion, with a 50% blending ratio yielding optimal performance. Kinetic analysis across different combustion stages reveals that the influence of rattan ash on the activation energy of fixed carbon combustion increases with a higher rattan proportion. In addition, alkali metals present in rattan ash effectively alleviated slagging and improved ash discharge of lignite. Maintaining the rattan blending ratio at approximately 50% maximizes co-combustion performance while balancing synergistic effects and ash fusion characteristics. At this ratio, the CO<sub>2</sub> emission reduction of the co-combustion system is estimated at 1.05 t<sub>CO2</sub>/t. Overall, this study provides an effective approach for the energy valorization of rattan waste, thereby contributing to the advancement of sustainable energy generation.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104964"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147657847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weimin Wu , Xiongfei Liu , Zhaoqin Liu , Wenqiang Du , Suocheng Zhang , Jinhua Wei
{"title":"Two-stage optimization scheduling of electric-thermal-hydrogen coupled microgrid via MISOCP-MINLP hybrid method: a multi-scenario resilience study","authors":"Weimin Wu , Xiongfei Liu , Zhaoqin Liu , Wenqiang Du , Suocheng Zhang , Jinhua Wei","doi":"10.1016/j.seta.2026.104955","DOIUrl":"10.1016/j.seta.2026.104955","url":null,"abstract":"<div><div>This study proposes a two-stage optimization method to solve the scheduling problem of the electric-thermal-hydrogen coupled microgrid in a photovoltaic-storage system. A multi-energy complementary architecture including photovoltaics, wind power, electrolyzers, and various energy storage devices was constructed. A mixed integer nonlinear model was established, and a “day-ahead-real-time” optimization framework was adopted: the day-ahead stage uses mixed-integer second-order cone programming (MISOCP) to plan multi-energy flows, and the real-time stage combines model predictive control (MPC) for dynamic adjustment. Five scenarios were tested, showing that this method can reduce operating costs by 8.8%, increase the utilization rate of renewable energy by 12%, and maintain a voltage qualification rate of 99.98% under extreme conditions. The innovation points include: 1) second-order cone relaxation model; 2) equipment dynamic characteristic optimization algorithm; 3) hydrogen energy scheduling strategy. Economic analysis indicates that electrolytic hydrogen production can save 59.9% of the cost, while fuel costs increase by 371% in the drought scenario, verifying the need for expansion of energy storage. The research provides an important reference for the optimization of microgrids with a high proportion of renewable energy.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104955"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147658419","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lucas Martínez-Rodríguez , Tomás Gómez-Navarro , Ivan Ligardo-Herrera , David Ribó-Pérez
{"title":"Decarbonising hybrid renewable energy systems for electricity access from the project","authors":"Lucas Martínez-Rodríguez , Tomás Gómez-Navarro , Ivan Ligardo-Herrera , David Ribó-Pérez","doi":"10.1016/j.seta.2026.104954","DOIUrl":"10.1016/j.seta.2026.104954","url":null,"abstract":"<div><div>Nearly 750 million people worldwide still lack access to electricity. Off-grid hybrid renewable energy systems offer a promising solution for expanding electrification in remote areas. However, greenhouse gas emissions associated with their life cycle—including material extraction, manufacturing, transportation, construction, and end-of-life processes—are often overlooked, overestimating their potential to contribute to electrification while minimising emissions. This study proposes a methodological framework for assessing and mitigating life cycle emissions from the early planning stages of electrification projects. The framework is applied to a case study in Honduras, where a system combining solar photovoltaic panels, a biomass gasification unit, and battery storage is designed to provide electricity to an isolated community. The results show that emissions are primarily concentrated in the manufacturing of solar panels and the use of concrete for structural components. By applying targeted mitigation strategies at different life cycle stages, total emissions can be reduced by up to 31%. In particular, activities where the use of concrete can be avoided, replaced, or reduced, offer the greatest potential for decarbonisation. The improved system’s emission factor is estimated at 0.12 kgCO<sub>2</sub>e/kWh, suggesting a meaningful contribution to emission reductions where electricity generation relies heavily on fossil fuels, with emission factors around 0.6 kgCO<sub>2</sub>e/kWh.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104954"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147657848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Haoxiang Lin , Xiaobin Lin , Zhonggang Zhang , Jinliang Yuan , Xiangyi Liu , Shijie Yang , Weiqiang Cai
{"title":"Three-dimensional multiphysics coupled model of metal-foam flow fields for enhanced H2O/CO2 Co-electrolysis in solid oxide electrolysis cells","authors":"Haoxiang Lin , Xiaobin Lin , Zhonggang Zhang , Jinliang Yuan , Xiangyi Liu , Shijie Yang , Weiqiang Cai","doi":"10.1016/j.seta.2026.104961","DOIUrl":"10.1016/j.seta.2026.104961","url":null,"abstract":"<div><div>Hydrogen production via H<sub>2</sub>O/CO<sub>2</sub> co-electrolysis in solid oxide electrolysis cells (SOECs) is a promising pathway for sustainable energy conversion. However, the application of metal-foam flow fields in SOECs remains largely unexplored. In this study, a three-dimensional multiphysics model is developed to evaluate the performance of a metal-foam distributor, in comparison with a conventional straight-channel design. Key characteristics, including species distribution, current density, temperature, pressure, reaction rates, and mechanical stress, are systematically analyzed. The results show that the metal-foam structure significantly enhances mass transfer and electrochemical activity, leading to increases of up to 66.86% in hydrogen production and 13.12% in current density. Meanwhile, parasitic reactions, including the reverse water–gas shift and methanation reactions, are markedly suppressed, and the peak operating temperature is reduced. In addition, a more uniform oxygen distribution is achieved at the anode, although accompanied by an increased pressure drop. The metal-foam configuration also effectively alleviates stress concentration, nearly eliminating peak stress and improving mechanical stability. These findings demonstrate that metal-foam flow fields provide an effective strategy for enhancing SOEC performance and durability, offering new insights for high-efficiency hydrogen production systems.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104961"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147602953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Moutaz Elgammi , Hasan Ahweedi , Mohamed Alhurair , Osamah Almansouri , Ali Ahreebah , Abdulsalam Baleid , Abdulgader Aghila
{"title":"Performance and economic assessment of an enhanced INVELOX wind power generation system","authors":"Moutaz Elgammi , Hasan Ahweedi , Mohamed Alhurair , Osamah Almansouri , Ali Ahreebah , Abdulsalam Baleid , Abdulgader Aghila","doi":"10.1016/j.seta.2026.104946","DOIUrl":"10.1016/j.seta.2026.104946","url":null,"abstract":"<div><div>The Invelox wind turbine system presents an innovative method for capturing higher wind energy compared to traditional wind turbines; however, it underperforms when wind approaches from the rear side (−90° < θ < 90°), resulting in a speed ratio of less than 1. To address this challenge, this study proposes the implementation of a windshield around the Invelox outlet airflow to improve aerodynamic performance. Computational fluid dynamics (CFD) simulations were conducted to evaluate the system’s efficiency under various conditions. Economic analysis and performance assessments using the System Advisor Model (SAM) indicated that the annual energy produced by the improved Invelox system is approximately 43% greater than that of the baseline system. The payback period for the baseline Invelox system is over 24 years, which decreases to less than 18 years for the improved version with a single turbine, and further to less than 12 years for the enhanced version featuring double horizontal axis wind turbines (HAWTs). These findings highlight the improved version’s potential for enhanced performance and cost-effectiveness, suggesting a promising avenue for optimizing wind energy harnessing technologies.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104946"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147602947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yubao Li , Yiyan Zhang , Ming Li , Lianzheng Fang , Haohao Hu , Qile Yu , Lingfei Qi
{"title":"A double-layer electromagnetic-triboelectric hybrid energy harvester with self-powering and self-sensing capabilities for polar wind speed monitoring","authors":"Yubao Li , Yiyan Zhang , Ming Li , Lianzheng Fang , Haohao Hu , Qile Yu , Lingfei Qi","doi":"10.1016/j.seta.2026.104959","DOIUrl":"10.1016/j.seta.2026.104959","url":null,"abstract":"<div><div>Polar regions are highly sensitive to climate change, making wind speed measurement and environmental monitoring crucial. However, reliable power supply for electronic devices in remote environments remains a key challenge. To address this issue, this paper proposes an electromagnetic generator (EMG)-triboelectric nanogenerator (TENG) hybrid wind energy harvester, employing the EMG module as the power supply unit and the TENG module as the wind-speed sensing unit. The influences of structural parameters on energy conversion performance were investigated, and a double-layer structure was adopted to optimize the output performance. Experimental results show that when the wind speed exceeds 7 m/s, the optimized structure exhibits superior output performance, which increases with rising wind speed. At the same rotational speed, its output voltage is enhanced by 417.05% and 101.03% compared with the outer- and inner-layer structures, respectively. The integrated LTC3588 power management module enables efficient energy storage and stable voltage output. Meanwhile, by leveraging the high-sensitivity output signal of the TENG and comparing multiple algorithms, a dual-channel long short-term memory network is adopted, achieving a wind-speed recognition accuracy of 99.77%. Overall, the proposed double-layer hybrid wind energy harvester integrates efficient energy conversion with reliable self-monitoring capability, providing a feasible solution for self-powered sensing systems in polar environments.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104959"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147602948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An improved emergency frequency control for power system based on coordination of autonomous response and tripping of wind turbine","authors":"Jinxin Ouyang , Baixiang Huangfu , Yanbo Diao , Jianfeng Yu","doi":"10.1016/j.seta.2026.104943","DOIUrl":"10.1016/j.seta.2026.104943","url":null,"abstract":"<div><div>The anti-interference ability of power systems continues to decline due to the increasing penetration rate of wind power. The autonomous response of wind turbine (WT) under the integrated inertia control can improve the system frequency characteristics. However, WT tripping needs to be coordinated to prevent frequency over-threshold when the power surplus is large. While existing studies have examined the minimum adjustable power boundary (APB) or the power regulation speed (PRS) of wind turbines, their joint impact on emergency frequency control is insufficiently characterized, which may lead to the over-threshold of frequency or excessive WT tripping. Therefore, the minimum APB of WT under constraints of rotor speed and pitch angle is analyzed, and the frequency control capability of WT considering APB and PRS is characterized. The PRS of WT considering the autonomous response and tripping is calculated, and the range of generator tripping to satisfy frequency safety and the constraint of minimum APB of wind farms is described. A searching method of WT tripping is proposed that balances the frequency safety with frequency control capability of wind farms, and an emergency frequency control method is further proposed based on the coordination of autonomous response and tripping of WT. The effectiveness of the proposed method is verified by case studies.</div></div>","PeriodicalId":56019,"journal":{"name":"Sustainable Energy Technologies and Assessments","volume":"88 ","pages":"Article 104943"},"PeriodicalIF":7.0,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147602962","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}