Renewable Energy最新文献

{"title":"Enhanced acidogenic gas utilization in two-stage co-digestion via biogas recirculation: Metagenomics analysis","authors":"Dominic Yellezuome ,&nbsp;Xianpu Zhu ,&nbsp;Ronghou Liu ,&nbsp;Chen Sun ,&nbsp;Mohamed Hemida Abd-Alla ,&nbsp;Abdel-Hamied M. Rasmey","doi":"10.1016/j.renene.2026.125310","DOIUrl":"10.1016/j.renene.2026.125310","url":null,"abstract":"<div><div>Acidogenic gas (H₂ and CO₂) from acidogenic reactors is often ignored in two-stage anaerobic digestion due to its high CO₂ content. While biogas recirculation improves methane production and substrate utilization, the underlying metabolic mechanisms remain unclear. This study explores these mechanisms using metagenomics in a novel two-stage system utilizing acidogenic gas. Biogas recirculation in the methanogenic stage increased average methane yield from 554 to 608 mL/g VS as the flow rate rose from 0 to 0.4 L/min, with a peak of 696 mL/g VS at 0.4 L/min. However, the methane yield decreased to 586 mL/g VS at 0.8 L/min. Recirculation enriched fermentative bacteria, boosting soluble metabolite production but slightly reducing organic matter removal. Although dominant microbial communities were significantly unaltered, syntrophic bacteria such as norank_f__norank_o__MBA03 (8.8–12.2 %) were enriched, strengthening microbial networks. Different methanogenic genera emerged, enabling rapid metabolite consumption via hydrogenotrophic, acetoclastic, and methylotrophic pathways. Metagenomic analysis revealed that recirculation upregulated key functions like signal transduction, cell motility, aromatic degradation, methanogenesis, and possible methane oxidation. This promoted carbon substrate availability and methane production while highlighting potential for valuable biochemical recovery from volatile fatty acids, supporting the circular economy and enhancing the cost-effectiveness of biogas systems.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125310"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035661","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":"Design optimization method for electricity-hydrogen energy storage system under uncertainties","authors":"Shuai Sun ,&nbsp;Kelei Huang ,&nbsp;Zhangfa Tong ,&nbsp;Yinghua Jiang","doi":"10.1016/j.renene.2026.125307","DOIUrl":"10.1016/j.renene.2026.125307","url":null,"abstract":"<div><div>In this work, a design optimization method for hybrid power system with hybrid electricity-hydrogen energy storage system under uncertainties is established. Firstly, a novel approach for modeling the interdependencies between the solar and wind energy uncertainties and load uncertainty is developed. Then, a two-stage collaborative design optimization model is constructed, where the first stage is to size the renewable energy capacities, and the second stage is to determine the hybrid energy storage system capacity and power dispatching scheme by simultaneously considering economy and resilience. Finally, the effectiveness of the proposed method is verified through a case study of a photovoltaic-wind-battery-hydrogen hybrid power system. The results show that the proposed uncertainty models can exactly describe the randomness and fluctuation characteristics of the hybrid power system, and the total annual and operating costs of the system in trade-off point are 5.38 × 10⁶ $ and 2.00 × 10⁵ $. The battery energy storage system is better than the hydrogen one in the system, and the combination of the both ones is more beneficial for the improvement of the economy and resilience. Furthermore, the influences of the investment and operation costs on the hybrid power system are comprehensively analyzed and discussed.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125307"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035736","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":"Harnessing solar mini-grid surplus with green finance and vertical economic integration for low-carbon hydrogen and electric mobility","authors":"Wei Chen ,&nbsp;Liu Yan","doi":"10.1016/j.renene.2026.125205","DOIUrl":"10.1016/j.renene.2026.125205","url":null,"abstract":"<div><div>An extensive disintegration exists in transferring renewable energy resources between China and developing sub-Saharan countries. This led to the problem of scarcity of electricity mobility and low-carbon hydrogen integration, enhancing solar mini-grid supply surplus. In addition, such disintegration is hindered by vertical economic integration between China and sub-Saharan countries. Keeping that in view, the purpose of the study is to evaluate the solar mini-grid surplus supply with green finance and vertical economic integration for renewable electricity mobility and low-carbon hydrogen in China and developing African countries. The empirical data is gathered from 1990 to 2024, and multiple advanced empirical assessment techniques, including split analysis, cross-sectional dependence test, cointegration analysis, Phillips-Ouliaris test, GARCH-based analysis technique, and sensitivity analysis. The findings illustrate that solar mini-grids in China create a substantial surplus that is monetised by using green-financed instruments, creating a new source of revenue that can be used to electrify rural areas with vertical integration of renewable electric power in the supply chain, with the electricity-mobility infrastructure and low-carbon hydrogen generation. Mini-grid models of this nature, backed by global green-bond markets, have been designed to be scalable, thus improving the local access to energy, as well as providing the region with hydrogen hubs.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125205"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145947992","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":"Combustion potential of pinewood pyrolysis oil blend with heavy fuel oil: Insights into rheological compatibility and calorific performance","authors":"Omvesh ,&nbsp;Harish Alagani ,&nbsp;D. Giribabu ,&nbsp;Prashant Kumar Srivastava ,&nbsp;Thallada Bhaskar ,&nbsp;Venkata Chandra Sekhar Palla","doi":"10.1016/j.renene.2026.125324","DOIUrl":"10.1016/j.renene.2026.125324","url":null,"abstract":"<div><div>The demand for sustainable energy is encouraging industries to replace fossil fuels with alternative renewable fuel sources, partially. This work examines the fuel thermo-physical properties of furnace oil and pinewood pyrolysis oil, as well as the potential for blending pinewood pyrolysis oil with furnace oil. Gross calorific value, viscosity, and auto ignition temperature analysis of blends containing 2.5–25 wt% pyrolysis oil was evaluated. The blends containing up to 10 wt% pyrolysis oil demonstrated a calorific value of approximately 41 MJ/kg, while also exhibiting acceptable ignition and flow properties over typical operating temperatures. These properties align well with the operational requirements of industrial combustion systems, providing a viable way to minimise fossil fuel dependency without significant changes to existing industrial combustion infrastructure. However, blends exceeding 10 wt% resulted in a considerable decrease in calorific value and an increase in auto ignition temperature, highlighting a practical limitation. These findings suggest that low-level bio-oil blending (≤10 wt%) offers a technically feasible route to reduce fossil fuel use in existing furnace oil-fired systems with minimal retrofit. The work highlights the practical limitations of incorporating bio-oil and outlines a pathway for the industry to gradually introduce bio-based fuels while controlling performance risks and operational costs.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125324"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074779","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 green strategy to transform pineapple peel into biobutanol includes microwave pretreatment and in-situ butanol recovery","authors":"Rafael de Moraes Altafini ,&nbsp;Juan Carlos López-Linares ,&nbsp;Alba Mei González-Galán ,&nbsp;Maria Teresa Garcia-Cubero ,&nbsp;Valeria Reginatto ,&nbsp;Monica Coca","doi":"10.1016/j.renene.2026.125341","DOIUrl":"10.1016/j.renene.2026.125341","url":null,"abstract":"<div><div>Pineapple peel, a residue rich in free sugars, can be hydrolyzed under mild conditions. Here, direct enzymatic hydrolysis (EH) of pineapple peel in the presence of Cellic CTec 2 at only 5 FPU g⁻¹ of pineapple peel dry mass yielded a hydrolysate containing 50.3 g L⁻¹ total sugars, but which was poorly fermentable. Pretreating the pineapple peel with microwave (MW) at 130 °C in the presence of water provided a fermentable residue containing 43.7 g L⁻¹ total sugars that generated 8.4 g L⁻¹ butanol. Thus, thermal treatment helped to overcome fermentation hindrance. Treating the pineapple peel with MW at 130 °C followed by EH at enzyme loading of 5 FPU g⁻¹ DM gave a fermentable hydrolysate containing 50.6 g L⁻¹ total sugars. Fermenting this hydrolysate in a bioreactor with <em>in-situ</em> butanol recovery by gas stripping with a pulse of glucose/fructose solution increased the butanol concentration to 9.8 ± 0.4 g L⁻¹. Overall, microwave pretreatment was essential to obtain a fermentable hydrolysate from pineapple peel, while gas stripping facilitated butanol removal during fermentation.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125341"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074788","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":"Sustainability assessment of supply chains for green hydrogen production","authors":"Lydia Stougie ,&nbsp;Hedzer van der Kooi ,&nbsp;Gijsbert Korevaar","doi":"10.1016/j.renene.2026.125249","DOIUrl":"10.1016/j.renene.2026.125249","url":null,"abstract":"<div><div>The sustainability of supply chains for green hydrogen production is compared from a life cycle point of view: 1) offshore electrolysis with electricity from Dutch wind farms followed by pipeline transport of hydrogen to Rotterdam (Netherlands), 2) onshore electrolysis in Rotterdam with electricity from the same wind farms, 3) electrolysis with electricity from solar PV in Algeria followed by pipeline transport of hydrogen and 4) electrolysis and ammonia production with electricity from solar PV in Saudi Arabia followed by deep sea transport and ammonia cracking. The environmental sustainability is assessed with ReCiPe 2016 and Environmental Footprint 3.0. The Total Cumulative Exergy Loss (TCExL) method is used to calculate the exergetic sustainability. According to the endpoint scores, offshore electrolysis with wind energy is preferred, but the difference between the TCExL scores of both wind energy options is small. The preference order of the other supply chains is undecided. The offshore wind option is also preferred according to the midpoint indicators GWP/climate change, land use and water consumption/use. It is advised that the systems be investigated in more detail before drawing conclusions about the order of preference and that also attention be paid to the economic and social pillars of sustainability.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125249"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146074789","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":"Solidification performance enhancement of a latent heat thermal energy storage system: A novel discontinuous fin configuration for vertical shell-and-tube design","authors":"Songzhen Tang ,&nbsp;Pinwei Liu ,&nbsp;Yuling Song ,&nbsp;Huan Xi ,&nbsp;Xuehong Wu ,&nbsp;Xiaohu Yang ,&nbsp;Ming Guo","doi":"10.1016/j.renene.2026.125275","DOIUrl":"10.1016/j.renene.2026.125275","url":null,"abstract":"<div><div>This study investigates the critical challenge of low heat release rates in vertical latent heat thermal energy storage units, proposing an innovative discontinuous fin configurations. A numerical model of the wax solidification process was developed using the enthalpy-porosity method, with a focus on analyzing how the discontinuous fin structure regulates temperature field distribution and solidification rate. The results demonstrate that optimizing the fin geometric parameters leads to a significant enhancement in thermal energy storage performance. The main fin length (<em>L</em>₁) has a critical value of 15 mm. Variations in <em>L</em>₁ below 15 mm result in negligible differences in solidification performance, while further increases in <em>L</em>₁ lead to a gradual increase in the total solidification time. Additionally, the dimensionless bifurcation angle <em>α</em> has an optimal range of 0.45–0.6, which yields the shortest solidification time. The optimized discontinuous fin configuration (<em>L</em>₁ = 15 mm, <em>α</em> = 0.45) achieves a 22.14 % reduction in solidification time and a 28.45 % increase in heat release rate compared to conventional longitudinal fins. This study elucidates the mechanism by which discrete fins enhance the solidification process, providing a robust theoretical foundation and critical design parameters for the development of next-generation high-efficiency thermal energy storage units.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125275"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975436","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":"Large-scale resource assessments for solar photovoltaics: A review of potential definitions, methodologies and future research needs","authors":"Heidi Ursula Heinrichs ,&nbsp;Jann M. Weinand ,&nbsp;Sebastian Kebrich ,&nbsp;Juan Camilo Gómez Trillos ,&nbsp;Shuying Chen ,&nbsp;Maxmilian Hoffmann ,&nbsp;Tsamara Tsani ,&nbsp;Ruihong Chen ,&nbsp;Wenxuan Hu ,&nbsp;Johannes Schmidt ,&nbsp;Carolin Ulbrich ,&nbsp;Vladyslav Mikhnych ,&nbsp;Jochen Linßen ,&nbsp;Russell McKenna","doi":"10.1016/j.renene.2025.125080","DOIUrl":"10.1016/j.renene.2025.125080","url":null,"abstract":"<div><div>Identifying suitable locations for solar photovoltaic (PV) systems is key to a successful global energy transition. However, PV assessments vary widely in terms of input data used, methodological approaches applied, and therefore ultimately in the resulting total potentials, making their comparison and interpretation challenging. Here, we review the current literature with respect to existing definitions of potentials, associated criteria as well as methodologies to identify current trends in this field and potential future research directions with a focus on large-scale assessments covering at least an entire country or a large region within a very large country. We observed a wide range of assumptions and methodologies used in such studies, sometimes combined with lack of transparency in documentation. Furthermore, the literature lacks consideration of system integration costs to account for the variable PV generation profile. The inclusion of non-technical factors is challenged by the lack of consistent theoretical and methodological approaches and interdisciplinary collaborations, as well as limited availability of data. Combined with a frequent lack of validation attempts, these aspects ultimately limit the comparability and reliability of results. The comprehensive overview in this review assists modelers and decision makers in utilizing best-practice methods for PV potential assessments to improve traceability and comparability of future assessments.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125080"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975999","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":"Fishery microgrid planning involving surface photovoltaic and hydrogen/oxygen utilization under typical extreme scenarios","authors":"Yanbin Li ,&nbsp;Minghao Song ,&nbsp;Yujie Hu ,&nbsp;Yuchen Wang ,&nbsp;Yaxuan Han ,&nbsp;Bingkang Li ,&nbsp;Feng Zhang","doi":"10.1016/j.renene.2026.125292","DOIUrl":"10.1016/j.renene.2026.125292","url":null,"abstract":"<div><div>With the growing demand for photovoltaic (PV) construction, issues related to limited PV land use and low utilization efficiency are becoming increasingly evident. Hydrogen energy storage (HES) has the potential to mitigate fluctuations in photovoltaic output and enhance its overall utilization efficiency. However, current research on the application of high-purity oxygen generated during hydrogen production remains scarce. By integrating PV and HES within fishery scenarios—such as installing PV panels on the surface of fish ponds and utilizing the oxygen produced by HES for fish—it is possible to achieve a synergistic relationship among fishery, PV, and HES resources. In light of this, this paper proposes the design of a fishery-surface PV-HES (FPH) microgrid. Through an investigation into the planning and operational optimization of the FPH microgrid, the substantial complementary potential of fishery, PV and HES is explored. Firstly, with the goal of minimizing the annualized total cost, the FPH microgrid planning and operation optimization model is constructed. Furthermore, the improved k-means clustering and the backward elimination algorithms are combined to generate a typical scenario set of solar irradiation, temperature as well as electric load. Then, the spinning reserve feasibility of the planning scheme under the typical scenario set is verified, and the same algorithms are used to select typical extreme scenarios from the verified infeasible scenarios. Finally, simulation is carried out based on the selected typical scenarios and typical extreme scenarios and mainly verifies that: 1) The life of the constructed FPH microgrid is 25 years, the investment payback period is 9.17 years, and the internal rate of return is 14.64 %, which has the potential for sustainable operation and development. 2) The proposed typical scenario and typical extreme scenario selection method considering the availability of spinning reserve can overcome the shortcomings of the traditional typical scenario and worst scenario selection, so that the FPH microgrid planning result can achieve economic construction, reliable operation and high proportion of PV output accommodation.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125292"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035732","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":"Planning of seawater pumped storage hydropower in coastal depressions of China","authors":"Yufan Fan ,&nbsp;Jun Qiu ,&nbsp;Bin Guo ,&nbsp;Bang Du ,&nbsp;Diyi Chen ,&nbsp;Beibei Xu ,&nbsp;Yong Peng ,&nbsp;Bo Xu ,&nbsp;Fangfang Li","doi":"10.1016/j.renene.2026.125186","DOIUrl":"10.1016/j.renene.2026.125186","url":null,"abstract":"<div><div>Seawater pumped energy storage (SPES) offers a promising solution to the intermittency of offshore wind and photovoltaic power in China's coastal regions. However, a targeted planning approach is lacking. We present a novel multi-stage, data-driven potential model that leverages the unique advantages of coastal depression topography to improve reservoir depth estimation and more accurately quantify energy storage potential. First, technically feasible locations are identified based on environmental and regulatory constraints. Next, cost-reduction criteria are applied to screen these candidate sites. Finally, a multi-objective optimization framework simultaneously minimizes total construction cost, number of sites, and spatial distribution disparities to select an optimal combination of sites. The results identify approximately 20,000 potential coastal sites with a combined storage capacity of 4379 GWh. Among them, 87 sites exhibit average construction costs of €949/kW, approaching those of conventional freshwater pumped storage systems. Considering the low excavation costs of depressions, the actual construction costs may be lower than the estimated values. Under projected 2050 electricity-storage requirements, only 15 well-distributed site combinations with a total installed capacity of 19.2 GW can satisfy national demand while remaining cost-competitive with alternative storage technologies. This study provides a scalable, data-driven framework to support coordinated planning of SPES infrastructure alongside renewable energy development.</div></div>","PeriodicalId":419,"journal":{"name":"Renewable Energy","volume":"261 ","pages":"Article 125186"},"PeriodicalIF":9.1,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975332","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}