Energy nexus最新文献

{"title":"Measuring the climate–energy–land nexus: Integrating energy and land use transition costs in Indonesia’s net-zero pathway","authors":"Nur Firdaus ,&nbsp;Akihisa Mori","doi":"10.1016/j.nexus.2026.100733","DOIUrl":"10.1016/j.nexus.2026.100733","url":null,"abstract":"<div><div>The climate–energy–land nexus, highlighted in the 2018 United Nations Intergovernmental Panel on Climate Change Special Report, is crucial for advancing global net-zero emissions. While previous research has explored the mechanisms and significance of this nexus, a lack of quantitative assessment has undermined its compelling impact. This study proposes a novel methodology for measuring the nexus using a Global Change Analysis Model. We used Indonesia to estimate the nexus in countries with abundant coal assets and extensive forest cover, defining it as the additional transition cost or the sum of energy- and land-related transition costs, with and without land-based mitigation measures. Our findings demonstrate that the nexus amounts to USD 558–922 billion (2.8% - 4.6% of GDP) without strict forest protection policies, depending on the availability and potential of mitigation technologies. The nexus becomes larger without land carbon pricing (USD 659–1019 billion or 3.3%-5.1% of GDP). The results indicate that land carbon pricing reduces the total transition cost more economically than strict forest protection policies. However, effective and appropriate implementations of land-based climate mitigation measures remain a challenge. The proposed methodology is globally applicable by incorporating country-specific conditions.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"22 ","pages":"Article 100733"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184211","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":"Agricultural intensification with Agrivoltaic insect net house systems: Delving into techno-economic feasibility in soilless media","authors":"Gaurav Gadhiya ,&nbsp;Urvashi Patel ,&nbsp;Suprava Chakraborty ,&nbsp;Pushpendrasingh Chauhan","doi":"10.1016/j.nexus.2026.100735","DOIUrl":"10.1016/j.nexus.2026.100735","url":null,"abstract":"<div><div>Energy and food are now the two most critical resources for any country. Population growth, industrialization, carbon emissions and food scarcity are all posing major problems to the environment and people. To overcome these difficulties an AV (Agrivoltaic) system which has been an integrated sustainable system is necessary. The AV system is compatible with the UN's SDGs 7, 8 and 13. However, AV might not be suitable for vegetable crops that require accurate pest management since it lacks microclimate control. In proposed work, researchers have developed a new technique for growing capsicum that combines an insect net house and AV. The 1.8 kW AV system has been placed at a height of 3 m to provide optimal tractor movement for various agricultural practices. The total cost of building the AVINH (Agrivoltaic insect net house) structure has been 85,300 ₹ (1 ₹=0.012 USD). For experimental purpose, three distinct land treatments have employed utilizing soil and soilless media to cultivate capsicum (shade tolerant crop) in Gujarat. These treatments involved AVINH with covered roof and open roof with open fields serving as three distinct environmental conditions. Remarkably the land equivalent ratio in an AVINH can reach up to 2.55 indicating a significant increase in resource efficiency. It has produced 1058.30 kWh of emission-free energy during the experimental season with 8 years of payback period. This approach may be utilized widely, involving scholars and business professionals to enhance national progress and standard of living.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"22 ","pages":"Article 100735"},"PeriodicalIF":9.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184295","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":"Cogeneration system utilizing geothermal energy: Energy, exergy, economic and environmental analyses and multi-objective optimization","authors":"Hassan Hajabdollahi,&nbsp;Mohsen Abooli Pour,&nbsp;Mohammad Shafiey Dehaj","doi":"10.1016/j.nexus.2026.100642","DOIUrl":"10.1016/j.nexus.2026.100642","url":null,"abstract":"<div><div>A comprehensive energy, exergy, economic, and exergoeconomic analyses was performed on a geothermal-based cogeneration system designed for the simultaneous production of hydrogen, oxygen, and freshwater. The system comprises three principal subsystems: a dual-pressure organic Rankine cycle for power generation, a reverse osmosis desalination unit for freshwater production, and a proton exchange membrane electrolyzer for hydrogen and oxygen generation. The system optimization was carried out using a non-dominated sorting genetic algorithm with the objective of minimizing the total exergy destruction cost rate while maximizing freshwater output. The results indicate that the organic Rankine cycle is responsible for the largest share of exergy destruction, accounting for approximately 61 % of the total, whereas the proton exchange membrane electrolyzer contributes about 65 % of the total exergy destruction cost rate. From an exergoeconomic perspective, the high-pressure turbine demonstrated the highest exergoeconomic factor, implying that its exergy destruction is relatively low compared to its associated investment cost. The overall exergy efficiency of the system and the corresponding payback period were estimated to be 23.81 % and 7.04 years, respectively, confirming the technical feasibility and economic viability of the proposed configuration.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100642"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077983","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":"Optimizing pumped hydro and hydrogen storage for water-dependent renewable systems","authors":"Claudinei de Moura Altea,&nbsp;Jurandir Itizo Yanagihara","doi":"10.1016/j.nexus.2026.100634","DOIUrl":"10.1016/j.nexus.2026.100634","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Brazil’s electricity sector is undergoing a profound transformation as the share of intermittent renewables, such as wind and solar, continues to grow. While the country benefits from abundant renewable resources and a historically hydro-dominated grid, this configuration is increasingly challenged by seasonal water variability, rising curtailments, and the need to phase out fossil-based backup generation. Addressing these challenges requires the deployment of long-duration energy storage technologies that can provide reliability, flexibility, and resilience at the system level.&lt;/div&gt;&lt;div&gt;For the first time in the Brazilian context, this study proposes a long-term optimization framework to assess the role of Pumped Hydro Storage (PHS) and Hydrogen (H₂) in enabling a cost-effective and sustainable expansion of Brazil’s power system. The framework simultaneously co-optimizes PHS siting—based on a geospatial inventory of 337 potential sites—together with modular H₂ deployment, renewable expansion, and hydrogen exports within a unified objective function. The model spans a 25-year planning horizon (2026–2050) with monthly resolution, explicitly integrating hydrological cycles and water-dependent dispatch, which is crucial for a hydro-dominated system like Brazil’s. It captures renewable expansion, storage deployment, hydrogen exports, and fossil imports. Decision variables include renewable capacity additions, the siting and adoption of PHS plants, and modular deployment of H₂ electrolysis and re-electrification units. The formulation incorporates round-trip efficiencies, investment and operating costs, CO₂ emissions with a carbon price, and penalties for curtailment, thereby ensuring an integrated assessment of technical, economic, and environmental trade-offs.&lt;/div&gt;&lt;div&gt;The results highlight distinct but complementary contributions of PHS and H₂. PHS consistently delivers higher round-trip efficiency and cost-effectiveness, confirming its role as a mature and reliable backbone for renewable integration. Hydrogen, in turn, provides strategic systemic flexibility, particularly under high-renewable penetration, enabling surplus absorption and export opportunities. In the optimal configuration (Scenario 7), the model deploys 101 PHS plants and 75 H₂ modules, and the system transitions from a negative net balance in the baseline to a positive economic outcome. While the baseline operates in a net cost position, the optimized configuration not only fully offsets this deficit but also generates additional revenues equivalent to 28 % of the original system costs, underscoring the economic superiority of the PHS–H₂ hybrid solution. Complementarily, the Fossil-Free scenario, which enforces the complete elimination of fossil-based imports in the final five years of the horizon, demonstrates the system’s ability to sustain a fully renewable and storage-backed operation, while maintaining overall system costs reduction within 4 % of the optimal config","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100634"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145977275","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":"Optimizing plant biomass from constructed wetlands for biogas production within the water-energy-food nexus","authors":"Giuseppe Mancuso,&nbsp;Dilia Carolina Duran Lugo,&nbsp;Emanuele Spizzirri,&nbsp;Attilio Toscano,&nbsp;Francesca Valenti","doi":"10.1016/j.nexus.2025.100626","DOIUrl":"10.1016/j.nexus.2025.100626","url":null,"abstract":"<div><div>As the global demand for sustainable energy solutions grows, Constructed Wetlands (CWs) are gaining recognition not only for their effectiveness in wastewater treatment but also for their untapped potential as bioenergy sources. This study explores the viability of CW-derived plant biomass for biogas production, evaluating how plant species, maturity stages, and storage durations can influence methane yield. Using biomass from a free water surface wetland in Italy, four plant species, e.g., <em>Phragmites australis, Typha latifolia, Carex</em> spp., and <em>Iris pseudacorus</em>, were analyzed through Biomethane Potential (BMP) tests at three storage intervals: i) immediate – t(0), ii) three months after harvesting – t(1), and iii) six months – t(2) after harvesting, respectively. Results indicate that biogas yield peaked at t(1) for all species, with <em>Iris pseudacorus</em> showing consistent performance over time, and low carbon-to-nitrogen (C/N) ratios correlating with higher methane output. While plant maturity and storage significantly affected volatile solids and gas production, not all decreases in solids translated to higher methane yields. These findings indicate that CW biomass holds potential as a renewable feedstock for biogas production, though further optimization and scale-up studies are needed to confirm its practical applicability. By aligning with the Water-Energy-Food Nexus and Nature-based Solutions (NbS), the research promotes integrated approaches to enhance resource recovery, reduce waste, and support climate resilience.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100626"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747036","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":"Green restaurants: An economic assessment of solar photovoltaics and energy storage systems","authors":"Idiano D'Adamo ,&nbsp;Simone Di Leo ,&nbsp;Massimo Gastaldi ,&nbsp;Anna Chiara Maccallini","doi":"10.1016/j.nexus.2025.100612","DOIUrl":"10.1016/j.nexus.2025.100612","url":null,"abstract":"<div><div>The transition to sustainable business models in the catering sector requires the integration of environmental innovation with economic feasibility. Restaurants, as energy-intensive businesses, represent a strategic context for assessing the financial viability of renewable energy technologies. This study evaluates the economic viability of photovoltaic (PV) and battery energy storage (BES) systems in Italy. The analysis evaluates the project under different policy conditions, with and without public incentives (40 % capital deduction on investment costs), and identifies the key factors that influence their profitability. A comprehensive methodology combining financial and sensitivity analysis, scenario analysis, LASSO regression, break-even point and Monte Carlo simulations was applied to assess economic performance and risk. The results show that the PV system is profitable in both contexts, although incentives significantly improve returns: from 425 to 1590 €/kW. Profitability depends mainly on specific production, the cost of purchasing electricity and the percentage of self-consumption. For the BES, profitability only occurs when self-consumption increases by at least 22–25 % with incentives and 30–35 % without them. Overall, the results emphasise that policy support and management strategies to optimise self-consumption are key to ensuring financial profitability. This work enables restaurant owners to identify the variables that most strongly influence the final outcome, helping them mitigate risks and maximise returns, while supporting more informed decisions that contribute to long-term sustainable development.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100612"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747037","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":"Pathways to feasible hydrogen production in alkaline water electrolyzers","authors":"Adnan Ozden","doi":"10.1016/j.nexus.2025.100620","DOIUrl":"10.1016/j.nexus.2025.100620","url":null,"abstract":"<div><div>Renewable-electricity-powered hydrogen production via alkaline water electrolysis provides an efficient route to hydrogen economy. Recent advances in catalysts, membranes, and systems have enhanced the technology’s practicality. This work provides a techno-economic assessment of hydrogen production, offering scenarios that needs to be met toward wide-scale industrial implementation. The work explores the cost implications of critical performance metrics and parameters, including current density, cell voltage, Faradaic efficiency (FE), electricity and water prices, catalyst/membrane and system lifetimes, and electrolyzer cost. The study reveals 15 scenarios that could take the technology a step closer to the DOE’s hydrogen cost targets. The analysis reveals that the economically compelling production of hydrogen requires performance enhancements (particularly voltage reductions), along with lower electricity (&lt;3.6 c kWh⁻¹) and water (&lt;3 $ ton⁻¹) prices, longer catalyst/membrane lifetimes (&gt;13,140 hours), electrolyzer costs (&lt;200 kW⁻¹), and catalyst/membrane costs (&lt;5% of total electrolyzer capital). The work discusses the remaining technical and economic challenges, offering research directions toward marketable electrified hydrogen production.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100620"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747038","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":"A pathway to food and energy security: Agrivoltaic potential in the MENA region","authors":"Mohammed E.B. Abdalla ,&nbsp;Osama Ayadi ,&nbsp;Aseel Al Omari ,&nbsp;Bilal Rinchi ,&nbsp;Jawad T. Al-Bakri","doi":"10.1016/j.nexus.2025.100610","DOIUrl":"10.1016/j.nexus.2025.100610","url":null,"abstract":"<div><div>Agrivoltaics (AV), the co-location of solar photovoltaic energy generation and agricultural farming, directly addresses the water-energy-food nexus and associated security challenges. Maximizing land efficiency is a long-standing practice, and AV presents an untapped opportunity to optimize land use in countries struggling with water, energy, or food security. Despite its promise, AV potential remains unexplored in countries that could benefit the most, particularly those in the Middle East &amp; North Africa (MENA) region. While AV suitability has been studied in many countries, no region-wide, quantitative assessment exists for the MENA region, despite its acute resource constraints. This study is the first to quantify AV suitability across the MENA region, expressed as a proportion of national agricultural land, using a Geographic Information System (GIS)-based weighted overlay analysis. The method integrated openly available datasets on solar irradiance, land cover, slope, and agricultural land distribution, providing a consistent-resolution assessment at regional and national scales. Results show that in the absence of solar radiation limitations, AV-suitable areas almost perfectly overlap with agriculturally suitable areas, yielding ranges of 74–100% under a conservative scenario and 94–100% under an optimistic scenario. Results from a control set of countries (UK, JPN, ECU, SWZ) exhibited substantially lower overlap supporting these findings. These findings highlight the immense AV potential in the MENA region and demonstrate the scalability of this open-dataset approach, providing a foundation that encourages detailed crop-specific studies and pilot projects at localized scales.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100610"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798688","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":"Mitigating the water scarcity challenges by a novel Dual Stage Water Purifier Unit-An experimental study","authors":"Sampath Suranjan Salins ,&nbsp;Sawan Shetty ,&nbsp;Shiva Kumar ,&nbsp;Reema Shetty","doi":"10.1016/j.nexus.2025.100614","DOIUrl":"10.1016/j.nexus.2025.100614","url":null,"abstract":"<div><div>This study presents the development of a dual-stage water purification system for the treatment of grey water (GW) and saline water (SW). In the first stage, water was passed through a graded series of filtration layers arranged from coarse to fine, while the second stage employed organic packing materials—Celdek (C), coconut coir (CC), and wood shavings (WS)—to further enhance purification and humidification. Water quality was evaluated at multiple stages, with the system achieving optimum performance of 0.27 LPM production rate, 19% efficiency, and a specific filtration capacity of 265 LPM/m² when operated with saline water and Celdek packing. Results indicated that water production increased during the initial six minutes before stabilizing, with the first stage accounting for the greatest removal of impurities relative to the second. Across both stages, reductions were observed in total dissolved solids (29%), hardness (58%), chloride (50%), and sulphate (33.3%). Overall, the dual-stage water filtration–humidification unit demonstrated strong efficacy in treating both grey and saline water, delivering potable water that complies with EPA standards.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100614"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798684","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":"Ecological Footprint under the lens: A bibliometric coupling analysis of institutional and socioeconomic factors","authors":"Stefania Pinzon ,&nbsp;Ernesto Rodríguez-Crespo ,&nbsp;Brayan Tillaguango ,&nbsp;Nuria E. Laguna-Molina","doi":"10.1016/j.nexus.2026.100643","DOIUrl":"10.1016/j.nexus.2026.100643","url":null,"abstract":"<div><div>The Ecological Footprint (EF) is a vital metric for assessing the evolution of global sustainability, but its underlying factors are complex and interwoven. This study employs bibliometric analysis to map the vast academic landscape exploring how socioeconomic and institutional factors may influence the EF. By analyzing 929 publications from 1992–2025 using VOS Viewer and RStudio software, we visualize the evolution of key themes, major contributing countries, leading authors, and core journals. Results show that while research on economic drivers like GDP and energy use is prevalent, the role of institutional factors, such as governance quality and political stability, is increasingly recognized as fundamental yet requires greater attention. The findings provide a clear roadmap for academic scholars, highlighting the need to integrate institutional analyses with traditional economic models to better understand and mitigate ecological degradation.</div></div>","PeriodicalId":93548,"journal":{"name":"Energy nexus","volume":"21 ","pages":"Article 100643"},"PeriodicalIF":9.5,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146037984","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}