Energy Reports最新文献_第4页

Review of technical solutions addressing voltage and operational challenges in a distribution grid with high penetration of intermittent RES 回顾了在间歇性可再生能源高渗透的配电网中解决电压和运行挑战的技术解决方案

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-18 DOI: 10.1016/j.egyr.2025.08.019

Victor Astapov , Noman Shabbir , Argo Rosin , Lauri Kütt , Vahur Maask , Hans Tiismus

{"title":"Review of technical solutions addressing voltage and operational challenges in a distribution grid with high penetration of intermittent RES","authors":"Victor Astapov , Noman Shabbir , Argo Rosin , Lauri Kütt , Vahur Maask , Hans Tiismus","doi":"10.1016/j.egyr.2025.08.019","DOIUrl":"10.1016/j.egyr.2025.08.019","url":null,"abstract":"<div><div>Integrating renewable energy sources (RES) into modern distribution grids presents challenges and opportunities. This paper reviews technical and operational barriers such as voltage fluctuations, congestion, and intermittency in RES-dominated grids. A novel three-layered implementation framework is proposed—comprising component, service, and regulatory layers—that unifies device-level technologies, grid services, and policy instruments into one coordinated roadmap. Through a structured screening of 120+ peer-reviewed journal articles and 30+ conference proceedings, we benchmark existing solutions and gaps. Notably, fewer than 15 % of reviewed studies address market-design and policy coordination. The study outlines specific voltage support technologies, energy storage integration, and prosumer incentives, aimed at enhancing localized generation and grid flexibility. We identify promising research directions in AI-driven forecasting, reactive power markets, and regulatory incentive design. system.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1738-1760"},"PeriodicalIF":5.1,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144866649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Multi-step prediction of wind power ramping based on dynamic historical window adjustment 基于动态历史窗调整的风电爬坡多步预测

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-16 DOI: 10.1016/j.egyr.2025.08.004

Tingqi Zhang, Junjie Sun, Qiang Zhang, Jifeng Cheng, Peng Yuan

引用次数: 0

The energy policy pricing dilemma: Affordability, volatility, and market signals in electricity tariffs 能源政策定价困境：电价的可承受性、波动性和市场信号

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-14 DOI: 10.1016/j.egyr.2025.08.006

Juan Ignacio Peña, Rosa Rodríguez, Silvia Mayoral

引用次数: 0

A review of environmental assessments of ground-source heat pumps 地源热泵环境评价综述

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-12 DOI: 10.1016/j.egyr.2025.08.002

Seama Koohi-Fayegh

{"title":"A review of environmental assessments of ground-source heat pumps","authors":"Seama Koohi-Fayegh","doi":"10.1016/j.egyr.2025.08.002","DOIUrl":"10.1016/j.egyr.2025.08.002","url":null,"abstract":"<div><div>Ground source heat pumps (GSHPs) are considered to be a promising technology to improve the energy efficiency of heating and cooling in buildings. However, sustainability of heat pump technologies and in particular GSHPs can sometimes be questioned. Detailed investigation of the environmental impacts of GSHPs over all stages of their life is needed to evaluate their sustainability. In this article, studies focused partially or in full on the environmental impact assessment of GSHPs, and their integrations with other systems, are reviewed. The focus of the review is on the main findings of such studies to provide a clearer picture of their status, but a summary of data input and methodologies that are used in such studies is also provided to ensure meaningful comparisons can be made among results of various studies, and to guide new studies on environmental assessment of GSHPs. It is found through this review that the main life stage contributing to environmental impacts of GSHPs is operation stage and the main contributor during this stage is electricity generation mix. Improvements in electricity generation source seem to be the most important factor to be considered if a wider adoption of GSHPs is sought.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1634-1644"},"PeriodicalIF":5.1,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144826583","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental assessment of ceiling cooling systems incorporating PCM in flat and domed roofs: Energy, environmental, and economic performance in hot-dry climates 在平面和圆顶屋顶中结合PCM的天花板冷却系统的实验评估：在干热气候下的能源、环境和经济性能

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-12 DOI: 10.1016/j.egyr.2025.08.009

Mehran Rabani , Mehrdad Rabani , Mahdi Zare Mehrjardi

{"title":"Experimental assessment of ceiling cooling systems incorporating PCM in flat and domed roofs: Energy, environmental, and economic performance in hot-dry climates","authors":"Mehran Rabani , Mehrdad Rabani , Mahdi Zare Mehrjardi","doi":"10.1016/j.egyr.2025.08.009","DOIUrl":"10.1016/j.egyr.2025.08.009","url":null,"abstract":"<div><div>This study experimentally assesses the cooling performance of phase change material (PCM)-integrated ceiling systems in two roof configurations—flat and domed—under the hot-dry climate of Yazd, Iran. The objective is to evaluate the thermal, economic, and environmental benefits of PCM-based ceiling systems compared to conventional systems. A ¼-scale building model was used to examine three configurations: a basic PCM ceiling, a fan-assisted PCM ceiling (PCM-F), and a mini cooler-assisted PCM ceiling (PCM-C), in both flat and domed roof setups. Comparative analysis shows that PCM integration reduces average indoor air temperature by up to 4 °C in the flat roof and 5 °C in the domed roof. The PCM-C configuration achieves the most effective cooling and thermal comfort, particularly with the domed roof, due to improved air circulation. Relative humidity remained largely unchanged in the PCM and PCM-F scenarios but increased by 6–8 % in the PCM-C configuration. Economic analysis over a 30-year period indicates that PCM-F offers the lowest total cost, with the domed roof reducing operating costs by up to 10 % compared to the flat roof. Environmental impact analysis reveals that PCM systems lower CO₂ emissions by up to 53 %, with domed roofs performing slightly better than the flat one. The findings suggest that PCM-integrated domed ceiling system, especially when combined with auxiliary cooling, offers a promising strategy for passive cooling and energy savings in hot-dry climates.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1661-1679"},"PeriodicalIF":5.1,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144829354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","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 influence of the compression ratio on the combustion process using methanol, gasoline, and methanol-gasoline blends 评估压缩比对甲醇、汽油和甲醇-汽油混合物燃烧过程的影响

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-12 DOI: 10.1016/j.egyr.2025.08.003

Ruobing Liu , Qi Cui , Hanyi Li , Haiyi Wang , Xixin Chen , Junhao Jin , Jingping Liu , Feng Zhou

{"title":"Evaluating the influence of the compression ratio on the combustion process using methanol, gasoline, and methanol-gasoline blends","authors":"Ruobing Liu , Qi Cui , Hanyi Li , Haiyi Wang , Xixin Chen , Junhao Jin , Jingping Liu , Feng Zhou","doi":"10.1016/j.egyr.2025.08.003","DOIUrl":"10.1016/j.egyr.2025.08.003","url":null,"abstract":"<div><div>In response to global energy and environmental challenges, this study systematically evaluates performance of methanol-gasoline blends (M100, M85) in comparison to pure gasoline in a spark-ignition (SI) engine. Through experimental data and numerical simulations, the combustion characteristics, energy flow distribution, and thermomechanical conversion processes of the three fuels were analyzed across compression ratios (CRs) ranging from 11 to 15. Under full-load conditions at 3500 r/min, gasoline showed 7.58 % and 8.69 % higher power outputs than M100 and M85, respectively. Additionally, when operating at the same speed under high loads (exceeding 125 Nm), methanol demonstrated better fuel economy than gasoline. This improvement stems from increased high-pressure cycle work, reduced heat transfer, and incomplete combustion losses. Both the effective expansion ratio (EER) and energy economy efficiency (EEE) peaked at a CR of approximately 13, beyond which efficiency gains plateaued while knock propensity intensified. Between 2500 and 3500 r/min with CR exceeding 13, methanol blends exhibited 18–23 % higher efficiency than gasoline, owing to their superior knock resistance resulting from greater octane sensitivity. The combustion characteristics of M85 fell between those of gasoline and M100, highlighting its potential as promising alternative fuel. These findings provide critical insights into enhancing methanol-gasoline engines through CR optimization, combustion phasing (CA50) calibration, and implementation of an effective thermal conversion process. The study systematically analyzes the combustion characteristics and energy flow synergy of high-proportion methanol-gasoline blends under high CR, along with the interactive effects of CR, load, and combustion timing.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1645-1660"},"PeriodicalIF":5.1,"publicationDate":"2025-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144831117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Large Language Models Integration in Smart Grids 智能电网中的大型语言模型集成

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-06 DOI: 10.1016/j.egyr.2025.06.051

Seyyedreza Madani , Ahmadreza Tavasoli , Zahra Khoshtarash Astaneh , Pierre-Olivier Pineau

{"title":"Large Language Models Integration in Smart Grids","authors":"Seyyedreza Madani , Ahmadreza Tavasoli , Zahra Khoshtarash Astaneh , Pierre-Olivier Pineau","doi":"10.1016/j.egyr.2025.06.051","DOIUrl":"10.1016/j.egyr.2025.06.051","url":null,"abstract":"<div><div>Large Language Models (LLMs) are changing the way we operate our society and will undoubtedly impact power systems as well—but how exactly? By integrating various data streams—including real-time grid data, market dynamics, and consumer behaviors—LLMs have the potential to make power system operations more adaptive, enhance proactive security measures, and deliver personalized energy services. This paper provides a comprehensive analysis of 30 real-world applications across eight key categories: Grid Operations and Management, Energy Markets and Trading, Personalized Energy Management and Customer Engagement, Grid Planning and Education, Grid Security and Compliance, Advanced Data Analysis and Knowledge Discovery, Emerging Applications and Societal Impact, and LLM-Enhanced Reinforcement Learning. Critical technical hurdles, such as data privacy and model reliability, are examined, along with possible solutions. Ultimately, this review illustrates how LLMs can significantly contribute to building more resilient, efficient, and sustainable energy infrastructures, underscoring the necessity of their responsible and equitable deployment.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1562-1577"},"PeriodicalIF":5.1,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimizing PV maintenance: Methods, cleaning frequency, and a selection protocol 优化PV维护：方法，清洁频率和选择协议

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-06 DOI: 10.1016/j.egyr.2025.07.008

Edgar Hernando Sepúlveda-Oviedo

{"title":"Optimizing PV maintenance: Methods, cleaning frequency, and a selection protocol","authors":"Edgar Hernando Sepúlveda-Oviedo","doi":"10.1016/j.egyr.2025.07.008","DOIUrl":"10.1016/j.egyr.2025.07.008","url":null,"abstract":"<div><div>Dust accumulation significantly reduces the efficiency of Photovoltaic (PV) systems, with energy losses reaching up to 50% in arid and semi-arid regions. This study presents a comprehensive review of PV cleaning methods, analyzing both passive (natural mitigation, coated surfaces, architectural solutions) and active methods (manual cleaning, water-based systems, electromechanical techniques, robotic cleaning, and piezoelectric approaches). A systematic evaluation of their operational principles, effectiveness, and economic implications is conducted, considering environmental constraints and site-specific conditions. A key contribution of this study is the assessment of optimal cleaning frequency, identifying how climatic and geographical factors influence maintenance schedules. Additionally, a novel Strategic PV Cleaning Optimization Method (SPV-COM) is introduced, offering a structured, multi-criteria decision-making framework to compare and rank cleaning methods based on technical performance, economic feasibility, and long-term sustainability. This methodology integrates operational costs and maintenance requirements to ensure an adaptive selection process that aligns with real-world PV installations. The proposed framework is scalable and applicable to diverse PV cleaning technologies, supporting decision-making in both small-scale and large-scale installations. The findings highlight, for example, the economic trade-offs between water-intensive methods and emerging autonomous solutions, as well as the need for region-specific strategies. By addressing critical gaps in prior studies, this work provides a structured approach to optimizing PV maintenance, contributing to improved efficiency, cost reduction, and sustainable energy production.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1578-1605"},"PeriodicalIF":5.1,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Predicting workforce requirements for energy efficiency and electrification from energy scenarios 根据能源情景预测能源效率和电气化的劳动力需求

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-05 DOI: 10.1016/j.egyr.2025.07.040

J. Rutovitz , R. Langdon , H.B. Lara , C. Briggs , D. Singha , E. Davies , J. Whelan

{"title":"Predicting workforce requirements for energy efficiency and electrification from energy scenarios","authors":"J. Rutovitz , R. Langdon , H.B. Lara , C. Briggs , D. Singha , E. Davies , J. Whelan","doi":"10.1016/j.egyr.2025.07.040","DOIUrl":"10.1016/j.egyr.2025.07.040","url":null,"abstract":"<div><div>The energy efficiency and electrification workforce will play a crucial role in the energy transition across all sectors, as reaching net zero requires simultaneously reducing energy intensity and increasing the proportion of electricity in final demand. The ability to plan for this critical workforce is hampered by a lack of information on workforce scale, occupational shares, and required skills. This research pilots a method to create workforce projections using outputs from standard energy models. The approach uses the petajoules of energy efficiency (reduction of electricity and other fuels) and petajoules of electrification (increased electricity demand resulting from switching to electricity) from the AusTIMES model as a data input to determine employment in energy efficiency and electrification to 2040 for Australia. This workforce has not previously been projected directly from energy scenarios, and the study establishes that an employment factor methodology is practicable to achieve this. Further effort is required to provide the sector-by-sector detail for occupational characterisation of these workforce(s). The AusTIMES data enables projections for the incremental workforce, and the study presents estimates of the associated baseline workforce to illustrate the importance of exploring this relationship in the future. Occupational classifications, further detailed employment factors, and the ratio between incremental and baseline workforce is the subject of further research. It would be beneficial to explore with researchers, government and industry what is most urgent to enable workforce planning, and to expand the research to determine which employment indicators are common across jurisdictions.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1548-1561"},"PeriodicalIF":5.1,"publicationDate":"2025-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144779776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Business and pricing models for district heating and cooling: A review 区域供热和供冷的商业和定价模式：综述

IF 5.1 3区工程技术

Energy Reports Pub Date : 2025-08-04 DOI: 10.1016/j.egyr.2025.06.049

Fabio Lilliu , Marco Calderoni , Diego Reforgiato Recupero

{"title":"Business and pricing models for district heating and cooling: A review","authors":"Fabio Lilliu , Marco Calderoni , Diego Reforgiato Recupero","doi":"10.1016/j.egyr.2025.06.049","DOIUrl":"10.1016/j.egyr.2025.06.049","url":null,"abstract":"<div><div>In recent decades, district heating and cooling has become a more and more relevant topic in the context of smart energy, and novel business models have been developed. However, while review papers have been written already on business models tied to specific contexts of district heating, there is the need for a generic review that encompasses all the most recent works on this field, giving an overview on the whole horizon of business and pricing models for district heating and cooling. In this work, we conduct a comprehensive review of business and pricing models for the use of flexible energy consumption in district heating and cooling, including their coupling with electricity systems. We examine both review papers on the topic and papers introducing novel models or enhancing existing ones. We identify key features to classify these papers, analyze how each work aligns with these criteria, and provide insights based on this analysis. Our research points out the need for novel business models targeting district cooling, devices different from heat pumps, non-European countries, machine-learning based algorithms and peak shaving.</div></div>","PeriodicalId":11798,"journal":{"name":"Energy Reports","volume":"14 ","pages":"Pages 1529-1547"},"PeriodicalIF":5.1,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144771820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0