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Integrated water-energy modeling in TEMOA energy system optimization model: Pantelleria case study TEMOA能源系统优化模型中的综合水能建模:panteleria案例研究
IF 8
Energy nexus Pub Date : 2025-05-16 DOI: 10.1016/j.nexus.2025.100461
Farzaneh Amir Kavei , Maria Elena Alfano , Matteo Nicoli , Francesco Quatraro , Laura Savoldi
{"title":"Integrated water-energy modeling in TEMOA energy system optimization model: Pantelleria case study","authors":"Farzaneh Amir Kavei ,&nbsp;Maria Elena Alfano ,&nbsp;Matteo Nicoli ,&nbsp;Francesco Quatraro ,&nbsp;Laura Savoldi","doi":"10.1016/j.nexus.2025.100461","DOIUrl":"10.1016/j.nexus.2025.100461","url":null,"abstract":"<div><div>This study addresses the limited integration of water-energy nexus dynamics in energy system models, particularly the lack of hard-linked modeling approaches. The aim is to develop and apply an integrated water-energy model using the open-source TEMOA framework, addressing the gap in quantifying reciprocal impacts of water and energy systems. The Island of Pantelleria serves as a case study due to its isolated infrastructure and ambitious decarbonization targets. First, a Reference Energy System is built and validated by comparing historical outcomes with past data and future projections with official transition scenarios. The model is then extended through the development of a detailed Reference Water System, incorporating water supply, treatment, and demand processes. Several scenarios are analyzed, including a zero-emission policy, reduction of water losses, increased in-situ water supply, and replacement of the primary wastewater treatment plant with a secondary one. Results show that the integrated model reveals substantial differences from the energy-only model. In particular, the ‘Clean Energy for EU Islands’ target indicates higher electricity consumption when water desalination is replaced by water import, an effect not captured by the energy-only model. Additionally, integrating fixed and variable components of water demand improved projection accuracy. The study concludes that a hard-linked water-energy modeling approach offers a more comprehensive understanding of the interdependencies between water and energy systems. This is crucial for planning effective, resource-efficient decarbonization strategies in isolated or resource-constrained contexts.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100461"},"PeriodicalIF":8.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144124241","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}
引用次数: 0
Perspective on methane capture strategies from natural low-level emissions 从自然低水平排放看甲烷捕获策略
IF 8
Energy nexus Pub Date : 2025-05-16 DOI: 10.1016/j.nexus.2025.100459
Dhanalakshmi Vadivel , Nithishkumar Kameswaran , Ilaria Vai , Daniele Dondi
{"title":"Perspective on methane capture strategies from natural low-level emissions","authors":"Dhanalakshmi Vadivel ,&nbsp;Nithishkumar Kameswaran ,&nbsp;Ilaria Vai ,&nbsp;Daniele Dondi","doi":"10.1016/j.nexus.2025.100459","DOIUrl":"10.1016/j.nexus.2025.100459","url":null,"abstract":"<div><div>Climate change is a pressing issue that confronts human existence in today’s world, and its consequences have already started manifesting at a more rapid rate. The biggest culprit of climate change is methane (CH<sub>4</sub>), a potent greenhouse gas. Consequently, methane emissions must be controlled effectively to prevent global warming. This review is an analysis of the literature available for methane capture, listing different types of adsorbents, highlighting standout materials dealing with the capture of both low and high concentrations of methane, and discussing progressive trends of materials that will help in tailoring adsorbents for better methane adsorption. This article also suggests a mixed membrane matrix as a future perspective by VOS Viewer analysis for the effective capture of methane, along with several techniques that can enhance the technical feasibility, economic viability, and environmental implications. As a result of understanding the challenges and opportunities associated with methane capture, we aim to address the concerns of residents and industry stakeholders regarding methane capture.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"19 ","pages":"Article 100459"},"PeriodicalIF":8.0,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144204530","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}
引用次数: 0
Mitigating environmental impacts of cineraria production in greenhouses: A life cycle assessment approach for sustainability 减轻温室中金银花生产的环境影响:可持续性的生命周期评估方法
IF 8
Energy nexus Pub Date : 2025-05-15 DOI: 10.1016/j.nexus.2025.100453
Majid Khanali, Tahereh Salehpour, Ali Rajabipour, Ali Kaab
{"title":"Mitigating environmental impacts of cineraria production in greenhouses: A life cycle assessment approach for sustainability","authors":"Majid Khanali,&nbsp;Tahereh Salehpour,&nbsp;Ali Rajabipour,&nbsp;Ali Kaab","doi":"10.1016/j.nexus.2025.100453","DOIUrl":"10.1016/j.nexus.2025.100453","url":null,"abstract":"<div><div>This study evaluates the environmental impacts of cineraria production in greenhouses using a LCA approach. The findings indicate a carcinogenic impact of 2.49E-03 kg C2H3Cl eq., with over 50 % attributed to electricity consumption for water pumping and ventilation. Natural gas use in electricity generation contributes an additional 1.30E-03 kg C2H3Cl eq. of aromatic hydrocarbons to the atmosphere. The ionizing radiation impact is estimated at 6.72E-02 Bq C-14 eq./FU, primarily driven by electricity use. The non-carcinogenic impact per cineraria plant totals 1.58E-02 kg C2H3Cl eq., mainly due to diesel combustion and the use of pesticides and fertilizers. To mitigate these effects, reducing diesel reliance and adopting biofuels and biofertilizers are recommended. The respiratory inorganic impact is recorded at 1.67E-04 kg PM2.5 eq./FU, largely stemming from diesel use, while ozone depletion is significantly linked to pesticides. Aquatic impacts result mainly from diesel combustion and nutrient runoff, which poses risks to human health and ecosystems. This study underscores the necessity of cleaner fuels and sustainable agricultural practices, advocating for ongoing assessments to promote ecological sustainability.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100453"},"PeriodicalIF":8.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116363","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}
引用次数: 0
Evaluating the viability of installing photovoltaic panels on irrigation canals for energy generation and water storage 评估在灌溉渠上安装光伏板用于发电和蓄水的可行性
IF 8
Energy nexus Pub Date : 2025-05-15 DOI: 10.1016/j.nexus.2025.100455
Ali Kaab , Hassan Ghasemi-Mobtaker , Mohammad Sharifi , Uffe Jørgensen
{"title":"Evaluating the viability of installing photovoltaic panels on irrigation canals for energy generation and water storage","authors":"Ali Kaab ,&nbsp;Hassan Ghasemi-Mobtaker ,&nbsp;Mohammad Sharifi ,&nbsp;Uffe Jørgensen","doi":"10.1016/j.nexus.2025.100455","DOIUrl":"10.1016/j.nexus.2025.100455","url":null,"abstract":"<div><div>This innovative strategy leverages solar energy to deliver clean, renewable power for irrigation pumps and related equipment, while also facilitating water storage. A study conducted by the IKAIC in Khuzestan province, Iran, explored the installation of PV systems on canal irrigation systems. The study indicates a PV system generates 7.22 GJ of solar energy per m² annually. To power the study area, about 23.3 ha of panels are needed. Utilizing the 114 ha of irrigation canals, if fully covered, could yield around 8233 TJ of energy, with an excess of 6550 TJ available for the grid. However, mutual shading limits usable panel coverage to 60 %, resulting in about 68.40 ha of coverage and generating approximately 4940 TJ, with 3257 TJ connectable to the grid. The analysis revealed that initial evaporation from the canal surface was around 1389,597 m³ annually. After the installation of PV panels, this figure fell to 764,278 m³, reflecting a reduction of 625,319 m³. This transforms to an approximate decrease of 11 ± 4 thousand m³ of water evaporation per km of canal. Thus, the implementation of PV panels on irrigation canals is highly recommended for both energy production and water conservation. This approach optimizes land use, supports sustainable development, and tackles the intertwined challenges of energy generation and water management. By harnessing solar power and utilizing existing infrastructure, this solution offers the potential to transform energy production and water resource management.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100455"},"PeriodicalIF":8.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144099134","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}
引用次数: 0
Biochar from co-pyrolysis of spent coffee ground with Leptolyngbya sp. KC 45 biomass and residue for energy and agricultural utilization 废咖啡渣与leptolyynbya sp. kc45生物质和残渣共热解的生物炭用于能源和农业利用
IF 8
Energy nexus Pub Date : 2025-05-15 DOI: 10.1016/j.nexus.2025.100454
Nuapon Duongbia , Wassana Kamopas , Khomsan Ruangrit , Thoranis Deethayat , Attakorn Asanakham , Tanongkiat Kiatsiriroat
{"title":"Biochar from co-pyrolysis of spent coffee ground with Leptolyngbya sp. KC 45 biomass and residue for energy and agricultural utilization","authors":"Nuapon Duongbia ,&nbsp;Wassana Kamopas ,&nbsp;Khomsan Ruangrit ,&nbsp;Thoranis Deethayat ,&nbsp;Attakorn Asanakham ,&nbsp;Tanongkiat Kiatsiriroat","doi":"10.1016/j.nexus.2025.100454","DOIUrl":"10.1016/j.nexus.2025.100454","url":null,"abstract":"<div><div>As the global population continues to grow, the demand for resources in agriculture, energy, and industry is also increasing, along with higher waste production. This study explored the potential of using spent coffee grounds (SCG) from local coffee shops in Chiang Mai, Thailand, for co-pyrolysis with either <em>Leptolyngbya</em> sp. KC 45 (LT) or its residue (LTR)—materials containing valuable antioxidants and pigments used in food, cosmetics, and medicine. The study investigates the chemical properties, quality characteristic, and morphology of the biochar. Various co-pyrolysis ratios of SCG to either LT or LTR (1:0, 2:1, 1:1, 1:2, 0:1) were tested, with 50 g of the mixture pyrolyzed at 500 °C in a fixed-bed reactor, using a heating rate of 5–10 °C/min, nitrogen flow of 100 ml/min, and a 1-hour holding time. Results showed that higher LT or LTR proportions increased biochar yield. Pure SCG biochar had a high heating value of 33.61 MJ/kg, confirming its fuel quality. Co-pyrolyzed biochars exhibited mesoporous structures and improved properties such as pH (6.2–6.5), electrical conductivity (1.01–1.45 dS/m), and C/N ratio (14.53–22.64), indicating their potential as soil amendments. This research contributes to reducing environmental waste by adding value to waste materials.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100454"},"PeriodicalIF":8.0,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144107072","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}
引用次数: 0
Harnessing urban biomass for energy and water production: an NSGA-II-based optimization approach 利用城市生物质进行能源和水生产:基于nsga - ii的优化方法
IF 8
Energy nexus Pub Date : 2025-05-09 DOI: 10.1016/j.nexus.2025.100449
Parviz Heydari Nasab , Ata Chitsaz , Hiva Rashidzadeh , Alireza Rostamzadeh Khosroshahi
{"title":"Harnessing urban biomass for energy and water production: an NSGA-II-based optimization approach","authors":"Parviz Heydari Nasab ,&nbsp;Ata Chitsaz ,&nbsp;Hiva Rashidzadeh ,&nbsp;Alireza Rostamzadeh Khosroshahi","doi":"10.1016/j.nexus.2025.100449","DOIUrl":"10.1016/j.nexus.2025.100449","url":null,"abstract":"<div><div>In this research, were propose a multiple-system that includes gasification for syngas and heat production, a Brayton cycle for power generation, and the utilization of waste heat from the turbine. This waste heat is used in a two-effect absorption refrigeration system to produce cooling and in a 24-step, multi-stage flash (MSF) desalination process to produce fresh water. A certain amount of natural gas is added as an auxiliary fuel to increase the calorific value of the syngas produced in the gasifier. The main driver is biomass from municipal solid waste due to its renewable nature and availability in all cities. This system is thermodynamically modeled using the Engineering Equation Solver (EES) software. It provides integrated analysis and investigation of the effects of energy, exergy, and the Levelized Cost Of Energy (LCOE) and Levelized Cost Of Exergy (LCOEx) in multi-objective optimization of multiple-systems to achieve maximum efficiency and minimum cost. It has been validated with similar papers. Finally, using objective functions, the (LCOE) and exergy efficiency has been optimized using MATLAB software with the Non-dominated Sorting Genetic Algorithm (NSGA II) method. The results indicate that the system achieves a net power Output of 18.756 MW, a heating capacity of 1.75 MW, a cooling capacity of 17.77 MW, and a freshwater production rate of 47.7 kg/s. The energy efficiency is calculated to be 73.51 %, with an exergy efficiency of 26.31%. The (LCOE) and (LCOEx) are 0.062 $/kWh and 0.236 $/kWh, respectively. The system is designed with a useful life of 25 years. Optimization results reveal that the optimal range for the (LCOE) is between 0.0566 and 0.0592 $/kWh, while the exergy efficiency ranges between 26.21 % and 28.09 %.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100449"},"PeriodicalIF":8.0,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143946500","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}
引用次数: 0
Optimal sizing of a grid-connected DC microgrid for agricultural applications with water-energy management system considering battery cycle life 考虑电池循环寿命的农用水能管理系统并网直流微电网的最佳尺寸
IF 8
Energy nexus Pub Date : 2025-05-08 DOI: 10.1016/j.nexus.2025.100445
Mohammad Hossein Mokhtare, Ozan Keysan
{"title":"Optimal sizing of a grid-connected DC microgrid for agricultural applications with water-energy management system considering battery cycle life","authors":"Mohammad Hossein Mokhtare,&nbsp;Ozan Keysan","doi":"10.1016/j.nexus.2025.100445","DOIUrl":"10.1016/j.nexus.2025.100445","url":null,"abstract":"<div><div>This paper presents an optimal sizing method for a DC microgrid topology commonly installed in agricultural farms. The microgrid comprises solar photovoltaic (PV) panels, a battery energy storage system (BESS), an electric water pump, an elevated water reservoir (WR), and a household electrical load. The sizing optimization procedure includes selecting a suitable PV array size and optimizing the WR and BESS capacities. For the technical evaluation of possible solutions, a water-energy management system (WEMS) is proposed. Water is treated as an independent demand. The irrigation regime is modeled on the basis of farmers’ experiential knowledge and a temperature constraint to avoid unnecessary evaporation due to irrigation in high temperatures. Moreover, the battery cycle and calendar lifetimes are integrated into the presented sizing method. A case study is conducted for an actual farm with real data. Comparative simulations with alternative topologies show that the PV-BESS-Grid microgrid with solar water pumping is the most techno-economically efficient topology. The target farm, while supplied only from the grid, has a levelized cost of energy (LCOE) equal to 401 $/MWh. However, the presented sizing method finds a DC agricultural microgrid configuration that provides energy with an LCOE of 223 $/MWh. This is a significant 44% decrease in the LCOE. With the optimal solution, around 77% of the energy needs of the farm are supplied from renewable solar energy. In addition, wasted solar energy decreases by 62.4% compared to a standalone solar pumping system. Sensitivity analysis is performed by varying critical parameters to observe the impacts on the optimal solution.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100445"},"PeriodicalIF":8.0,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143941262","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}
引用次数: 0
Impact of ozone nanobubble on water quality, gut microbiota, and growth performance of white leg shrimp (Penaeus vannamei) in an intensive indoor farming system 臭氧纳米泡对室内集约化养殖白腿对虾水质、肠道菌群和生长性能的影响
IF 8
Energy nexus Pub Date : 2025-05-07 DOI: 10.1016/j.nexus.2025.100450
Phan Trong Binh , Phan Thi Van , Nguyen Huu Nghia , Tong Tran Huy , Le Thi May , Sophie St-Hilaire , Pham Thai Giang
{"title":"Impact of ozone nanobubble on water quality, gut microbiota, and growth performance of white leg shrimp (Penaeus vannamei) in an intensive indoor farming system","authors":"Phan Trong Binh ,&nbsp;Phan Thi Van ,&nbsp;Nguyen Huu Nghia ,&nbsp;Tong Tran Huy ,&nbsp;Le Thi May ,&nbsp;Sophie St-Hilaire ,&nbsp;Pham Thai Giang","doi":"10.1016/j.nexus.2025.100450","DOIUrl":"10.1016/j.nexus.2025.100450","url":null,"abstract":"<div><div>This study evaluated the effects of ozone nanobubbles (NB-O₃) on water quality, growth performance, survival rate, and gut microbiota in intensive indoor farming of white-leg shrimp (<em>Penaeus vannamei</em>). The experiment lasted 12 weeks and included two groups: (1) NB-O₃ treatment at 0.3 mg/L ozone concentration and (2) a control group without NB-O₃ treatment. Water quality parameters including temperature, dissolved oxygen (DO), pH, and Oxidation–Reduction Potential (ORP) were monitored daily. Weekly analyses were conducted for Chemical Oxygen Demand (COD), Biochemical Oxygen Demand after 5 days (BOD₅), Ammonia Nitrogen (NH₃-N), Nitrite Nitrogen (NO₂-N), and Vibrio counts. Shrimp weight was recorded weekly, while final biomass (FB), final body weight (FBW), survival rate (SR), feed conversion ratio (FCR), specific growth rate (SGR), and mean weekly weight gain (MWWG) were evaluated at the end of study. Gut microbiota samples were collected on days 1, 60, and 84. The results showed that NB-O₃ significantly reduced COD, total <em>Vibrio</em>, and NH₃-N levels compared to the control (<em>p</em> &lt; 0.05). Shrimp in the NB-O₃ group exhibited significantly higher weights from week 5 onwards (<em>p</em> &lt; 0.05), with improved FB, FBW, SGR, and MWWG compared to the control (<em>p</em> &lt; 0.05). However, SR and FCR were lower in the NB-O₃ group (<em>p</em> &lt; 0.05). Dominant gut microbiota phyla in NB-O₃-treated shrimp were Proteobacteria, Bacteroidota, and Acinobacteriota, with their proportions recorded as 72.27 %, 13.82 %, and 6.72 % on day 1; 60.75 %, 17.16 %, and 18.64 % on day 60; and 45.74 %, 40.25 %, and 8.44 % on day 84, respectively. Significant differences in alpha and beta diversity were observed between groups on days 1 and 60 (<em>p</em> &lt; 0.05). <em>Vibrio parahaemolyticus</em> density was lower in NB-O₃-treated shrimp (<em>p</em> &lt; 0.05). These findings demonstrate that NB-O₃ improves water quality, enhances shrimp growth performance, and effectively regulates <em>Vibrio</em> spp. in intensive indoor farming systems. To the best of our knowledge, this is the first study to report the effects of NB-O3 on shrimp gut microbiota.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100450"},"PeriodicalIF":8.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143929589","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}
引用次数: 0
Microcredit and household energy consumption: Exploring the impact of The Kredit Usaha Rakyat (KUR) program in Indonesia 小额信贷与家庭能源消耗:探索印尼人民信贷项目的影响
IF 8
Energy nexus Pub Date : 2025-05-07 DOI: 10.1016/j.nexus.2025.100446
Diana Setyawati , Djoni Hartono
{"title":"Microcredit and household energy consumption: Exploring the impact of The Kredit Usaha Rakyat (KUR) program in Indonesia","authors":"Diana Setyawati ,&nbsp;Djoni Hartono","doi":"10.1016/j.nexus.2025.100446","DOIUrl":"10.1016/j.nexus.2025.100446","url":null,"abstract":"<div><div>Energy constraints significantly impact household welfare and the quality of life. Developing countries, such as Indonesia, continue to face challenges in meeting household energy needs. This study investigates the impact of microcredit access on Indonesian households' energy consumption. Understanding this relationship is essential for insights into how microcredit can affect energy use in the context of developing countries. Using data from 2019 (pre-pandemic) and 2021 (during the pandemic), this study uniquely bridges a gap in the literature by analyzing both pre-pandemic and pandemic periods. This offers novel insights into how microcredit programs respond to dynamic economic conditions. We employ the two-stage least squares (2SLS) method with instrumental variables to address potential causality issues. Our findings reveal a positive relationship between access to microcredit and household energy consumption expenditures. By comparing pre-pandemic and pandemic periods, the study highlights how economic conditions affect the effectiveness of microcredit programs. Moreover, regional analysis reveals variations in the impact of microcredit across Indonesia. This study contributes to understanding how microcredit programs affect household energy consumption, taking into account economic conditions and spatial effects. Our findings offer policy implications for enhancing household energy consumption through microcredit programs. Policymakers should consider regional needs and evolving economic conditions to optimize the effectiveness of microcredit programs.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100446"},"PeriodicalIF":8.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143932041","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}
引用次数: 0
Integrated DDPG-PSO energy management systems for enhanced battery cycling and efficient grid utilization 集成DDPG-PSO能量管理系统,增强电池循环和有效的电网利用
IF 8
Energy nexus Pub Date : 2025-05-07 DOI: 10.1016/j.nexus.2025.100448
Oladimeji Ibrahim , Mohd Junaidi Abdul Aziz , Razman Ayop , Wen Yao Low , Nor Zaihar Yahaya , Ahmed Tijjani Dahiru , Temitope Ibrahim Amosa , Shehu Lukman Ayinla
{"title":"Integrated DDPG-PSO energy management systems for enhanced battery cycling and efficient grid utilization","authors":"Oladimeji Ibrahim ,&nbsp;Mohd Junaidi Abdul Aziz ,&nbsp;Razman Ayop ,&nbsp;Wen Yao Low ,&nbsp;Nor Zaihar Yahaya ,&nbsp;Ahmed Tijjani Dahiru ,&nbsp;Temitope Ibrahim Amosa ,&nbsp;Shehu Lukman Ayinla","doi":"10.1016/j.nexus.2025.100448","DOIUrl":"10.1016/j.nexus.2025.100448","url":null,"abstract":"<div><div>Effective energy management is crucial in hybrid energy systems for optimal resource utilization and cost savings. This study integrates Deep Deterministic Policy Gradient (DDPG) with Particle Swarm Optimization (PSO) to enhance exploration and exploitation in the optimization process, aiming to improve energy resource utilization and reduce costs in hybrid energy systems. The integrated DDPG-PSO approach leverages DDPG's reinforcement learning and PSO's global search capabilities to enhance optimization solution quality. The PSO optimizes the DDPG actor-network parameters, providing a strong initial policy. DDPG then fine-tunes these parameters by interacting with the energy system, making decisions on battery scheduling and grid usage to maximize cost rewards. The results show that the integrated DDPG-PSO EMS outperforms the traditional DDPG in terms of battery scheduling and grid utilization efficiency. Cost evaluations under critical peak tariffs indicate that both EMS algorithms achieved a 34 % cost saving compared to a grid-only system. Under differential grid tariffs, the proposed DDPG-PSO approach achieved a 28 % cost reduction, outperforming the standalone DDPG, which achieved a 25 % saving. Notably, the DDPG-PSO effectively reduced overall grid dependency, yielding a total operational cost of $665.19, compared to $780.70 for the DDPG. resenting a 14.8 % reduction. The battery charge/discharge profiles further highlight the advantages of the DDPG-PSO strategy. It demonstrated more stable and efficient energy flow behavior, characterized by shallow cycling and partial discharges sustained over several hours. In contrast, the DDPG exhibited more aggressive deep cycling, fluctuating frequently between minimum and maximum charge levels. This improved energy flow management by DDPG-PSO not only reduces wear on the battery system but also promotes long-term sustainability and reliability in hybrid energy management.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"18 ","pages":"Article 100448"},"PeriodicalIF":8.0,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084020","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}
引用次数: 0
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