Energy Economics最新文献

Machine learning multi-objective optimization for time-dependent green vehicle routing problem 时变绿色车辆路径问题的机器学习多目标优化

IF 13.6 2区经济学

Energy Economics Pub Date : 2025-06-23 DOI: 10.1016/j.eneco.2025.108628

Sidonie Ienra Nyako , Dalila Tayachi , Fouad Ben Abdelaziz

{"title":"Machine learning multi-objective optimization for time-dependent green vehicle routing problem","authors":"Sidonie Ienra Nyako , Dalila Tayachi , Fouad Ben Abdelaziz","doi":"10.1016/j.eneco.2025.108628","DOIUrl":"10.1016/j.eneco.2025.108628","url":null,"abstract":"<div><div>This study explores the Multi-Objective Time-Dependent Green Vehicle Routing Problem (MOTDGVRP) within the framework of energy economics, focusing on optimizing fuel consumption and transportation efficiency. Our model minimizes total distance, transportation time, and fuel consumption, all of which are critical for reducing energy costs and environmental impact. We introduce methodologies for calculating travel time and fuel consumption, considering time-dependent speed variations across different periods. Key factors influencing fuel consumption include vehicle load, dynamic traffic speeds, and distance traveled, reflecting real-world energy use in logistics. Given the NP-hard nature of the problem, we employ Non-dominated Sorting Genetic Algorithm 2 (NSGA-2) and an NSGA-2 enhanced with Machine Learning (MLNSGA-2) to optimize routing decisions. The originality of this study lies in the integration of machine learning (ML) in vehicle routing optimization,which enhances solution quality and accelerates computational performance. While ML applications in routing are growing, their use in Vehicle Routing related models remains novel. Additionally, the model accounts for time-dependent speed variations, addressing real-world traffic dynamics that significantly impact fuel consumption and delivery efficiency. The combination of ML-enhanced optimization with time-sensitive routing presents a new approach to energy-efficient transportation. From an energy economics perspective, our findings provide valuable insights for optimizing energy use in logistics, reducing operational costs, and promoting sustainable transportation. The integration of machine learning-driven optimization offers a scalable method for enhancing energy efficiency in supply chains, contributing to both economic and environmental objectives.</div></div>","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"148 ","pages":"Article 108628"},"PeriodicalIF":13.6,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A comprehensive structural decomposition analysis of CO2 emissions from vessels: A case study of Japan 船舶二氧化碳排放的综合结构分解分析：以日本为例

IF 13.6 2区经济学

Energy Economics Pub Date : 2025-06-23 DOI: 10.1016/j.eneco.2025.108674

Taiga Shimotsuura

{"title":"A comprehensive structural decomposition analysis of CO2 emissions from vessels: A case study of Japan","authors":"Taiga Shimotsuura","doi":"10.1016/j.eneco.2025.108674","DOIUrl":"10.1016/j.eneco.2025.108674","url":null,"abstract":"<div><div>The increasing focus on zero-emission vessels highlights the need for environmental analyses from a life-cycle assessment perspective. The present study estimates the carbon footprint (CF) of maritime transport in Japan from 2005 to 2022 by assessing the full vessel life cycle, while excluding the end-of-life stage, under varying vessel lifespan scenarios. Furthermore, this study developed a comprehensive structural decomposition analysis (SDA) to quantify stakeholder contributions at detailed vessel life stages under different lifespan scenarios, thereby facilitating the development of more targeted policies. Extending the average vessel lifespan by 5 years results in a cumulative CF reduction of approximately 1.7 Mt-CO₂ compared to that in the baseline scenario, despite increased vessel repair demand. The SDA results demonstrated that shipyards and shipping companies contributed equally to CF reduction. Comparison of SDA across different lifespan scenarios revealed that lifespan extension is a crucial strategy for CF mitigation, suggesting the need to integrate current CF reduction measures with vessel lifespan extension to maximize environmental benefits.</div></div>","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"148 ","pages":"Article 108674"},"PeriodicalIF":13.6,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heatwaves worsen the air pollution from energy systems: Empirical evidence from balancing authorities in the United States 热浪加剧了来自能源系统的空气污染：来自美国平衡当局的经验证据

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-21 DOI: 10.1016/j.eneco.2025.108677

Jing Liang, Di Wu

{"title":"Heatwaves worsen the air pollution from energy systems: Empirical evidence from balancing authorities in the United States","authors":"Jing Liang, Di Wu","doi":"10.1016/j.eneco.2025.108677","DOIUrl":"https://doi.org/10.1016/j.eneco.2025.108677","url":null,"abstract":"Climate change has led to increasingly frequent and intense heatwaves. The energy sector is particularly vulnerable to heatwaves, as they increase energy demand and reduce the efficiency of power plants, exacerbating air pollution from energy systems. This complicates the mitigation of air pollution, especially in predominantly fossil-fuel-based power systems. This study addresses this gap by providing empirical analysis using high-frequency generation and emissions data at the balancing authority level. A fixed-effects panel regression analysis is applied to control for confounding factors and determine a more causal impact. We find that heatwaves increase daily electricity generation by 6.73% to 7.54%, with the highest increase from natural gas generation at 7.7%. Additionally, heatwaves increase SO<ce:inf loc=\"post\">2</ce:inf> emissions by 10.5% to 12.6%, NO<ce:inf loc=\"post\">x</ce:inf> emissions by 11.4% to 13.3%, and CO<ce:inf loc=\"post\">2</ce:inf> emissions by 11.9% to 13.8%. We also detect heterogeneity among different regions, types of utilities, fuel types, and socio-demographic groups. Our study underscores the urgency of coordinated control policies to address air quality issues exacerbated by extreme temperatures.","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"45 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337785","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Environmental regulation and intra-firm wage inequality: A skill premium perspective 环境监管与企业内部工资不平等：技能溢价视角

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-21 DOI: 10.1016/j.eneco.2025.108679

Ruting Huang, Shanshan Duan, Xiyan Li

引用次数: 0

The forward market dilemma in energy-only electricity markets 纯能源电力市场的远期市场困境

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-21 DOI: 10.1016/j.eneco.2025.108676

Jonty Flottmann, Paul Simshauser, Phillip Wild, Neda Todorova

{"title":"The forward market dilemma in energy-only electricity markets","authors":"Jonty Flottmann, Paul Simshauser, Phillip Wild, Neda Todorova","doi":"10.1016/j.eneco.2025.108676","DOIUrl":"https://doi.org/10.1016/j.eneco.2025.108676","url":null,"abstract":"Spot prices in energy-only markets, particularly those with high market price caps, are inherently volatile. As a result, forward markets for hedge contracts are a crucial design feature which guides systemic stability and allows the adequate operation of competitive wholesale and retail markets. Hedge contracts have historically been sold by large base, intermediate and peaking generators to risk-neutral and risk-averse energy retailers. However, as the electricity sector decarbonises and intermittent renewable market share rises, baseload plant exit is predictable, and along with them, so does their hedge contract capacity. Many governments are seeking to accelerate the entry of renewable projects through government-initiated two-way fixed price Contracts-for-Differences (CfDs), typically by way of auction. Because government is the counterparty, CfDs are ‘off-market’ and unless carefully designed, can produce a structural shortage of primary issuance hedge contract capacity. We model the forward markets in Australia's National Electricity Market and find structural shortages may materialise if off-market fixed price methods dominate because the CfD forms the ‘primary hedge’ for renewable entrants – and output cannot be prudently hedged twice. Conversely, when on-market PPAs dominate, or government CfDs are structured to be compatible with active forward market participation by renewable entrants, shortages can be eliminated.","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"25 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-21 DOI: 10.1016/j.eneco.2025.108678

Thomas Longden

{"title":"Temperature-related energy insecurity and heating degree thresholds for prepayment gas customers in England and Wales","authors":"Thomas Longden","doi":"10.1016/j.eneco.2025.108678","DOIUrl":"https://doi.org/10.1016/j.eneco.2025.108678","url":null,"abstract":"Extreme temperatures can be dangerous when increased energy use for heating or cooling leads to household energy insecurity events, such as de-energisation or self-rationing. Prepayment (or pay-as-you-go) for electricity and/or gas is used in over 30 countries, but few studies quantify the actual incidence and rate of temperature-related energy disconnections. This study uses smart-meter data for over 600,000 prepayment gas customers in England and Wales across more than 7 winters to understand how cold weather impacts credit top up behaviour, emergency credit borrowing, and running out of credit, which leads to self-disconnection. The impact of cold temperatures on credit top-ups is greatest below heating degree thresholds of −3.8 °C, −5.6 °C and − 5.1 °C for those living in regions with high fuel poverty, North England and Yorkshire, and regions with low wages, respectively. For self-disconnection events, similar thresholds are found. High rates of temperature-related self-disconnection also occur in regions with high claimants of unemployment related benefits. An analysis of credit top-up amounts shows that most top ups are £20 or less but for cold events below −6 °C there is a significant increase in top-ups above £20. People also anticipate cold events with minimum temperatures below −3 °C and − 5 °C but do not react in the same way to the metric used to trigger the Cold Weather Payment. Revising the Cold Weather Payment with a daily minimum temperature trigger may help people anticipate payment and avoid self-rationing.","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"642 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144337784","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Exchange rate movements and oil price expectation shocks in selected African countries: Evidence from a recursive methodology 若干非洲国家的汇率变动和石油价格预期冲击：来自递归方法的证据

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-20 DOI: 10.1016/j.eneco.2025.108653

Eddery Lam, Andrew Ojede

{"title":"Exchange rate movements and oil price expectation shocks in selected African countries: Evidence from a recursive methodology","authors":"Eddery Lam, Andrew Ojede","doi":"10.1016/j.eneco.2025.108653","DOIUrl":"https://doi.org/10.1016/j.eneco.2025.108653","url":null,"abstract":"Many studies investigating the exchange rate-oil price nexus do not impose realistic gains on time-varying parameters, which more accurately depict how market participants react to shocks on exchange rates, especially those emanating from large movements in oil prices. The advantage of estimating time-varying parameters over the conventional ordinary least squares (OLS) estimator is that imposing realistic gains on time-varying parameters truly captures the behavior of foreign exchange market participants following an oil-price expectation shock. The main objective of this paper is to investigate how oil price expectation shocks affect exchange rate movements in selected African countries, which include a mix of net oil-exporting and net oil-importing countries. We deploy a recursive methodology to estimate time-varying parameters from an exchange rate–oil price regression. Since OLS weighs all observations equally and assigns an average parameter estimate, we find that time-varying parameter estimates tend to be larger and more accurately represent the behavior of market participants, especially profit-maximizing speculators. Moreover, the evolution of our time-varying parameter estimates mimics the exchange rate data generation process. Our results provide new insights into how exchange rates behave following an oil-price expectation shock at different quarterly time horizons and have important implications for monetary policy.","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"38 1","pages":""},"PeriodicalIF":12.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The impact of artificial intelligence policy on green innovation of firms 人工智能政策对企业绿色创新的影响

IF 13.6 2区经济学

Energy Economics Pub Date : 2025-06-19 DOI: 10.1016/j.eneco.2025.108524

Boqiang Lin , Yitong Zhu

{"title":"The impact of artificial intelligence policy on green innovation of firms","authors":"Boqiang Lin , Yitong Zhu","doi":"10.1016/j.eneco.2025.108524","DOIUrl":"10.1016/j.eneco.2025.108524","url":null,"abstract":"<div><div>As a pivotal force in driving innovation, Artificial Intelligence (AI) has played a significant role in the technological advancement of enterprises. Investigating the impact of AI pilot policies on corporate green innovation is not only conducive to optimizing the development trajectory of AI but also an essential measure in advancing sustainable development strategies. This study uses the 2019 Chinese AI Innovation and Development Pilot Zone (AIP) policy as a quasi-natural experiment, examining the influence of policy on corporate green innovation and its intrinsic mechanisms of action. The findings indicate: (1) The AIP policy significantly fosters green innovation among enterprises in the pilot regions, with results remaining robust after a series of sensitivity tests; (2) Mechanism analysis reveals that the influence of the policy on corporate green innovation is mediated by R&D investment and is also moderated by the level of ESG and environmental disclosure; (3) Heterogeneity tests discover that the policy has a more pronounced impact on enterprises with superior financing conditions, lower market concentration, and higher levels of regional digital economic development. This paper not only provides theoretical support for understanding the role of AI in corporate green development but also offers empirical references for assessing the policy effects of AI development.</div></div>","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"148 ","pages":"Article 108524"},"PeriodicalIF":13.6,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144472240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbon curse: As you extract, so you will burn 碳诅咒：当你提取，你将燃烧

IF 12.8 2区经济学

Energy Economics Pub Date : 2025-06-18 DOI: 10.1016/j.eneco.2025.108636

Adrien Desroziers, Yassine Kirat, Arsham Reisinezhad

引用次数: 0

Unveiling the reality of carbon reduction: Is the Paris Agreement turning the world green or just painting it green? 揭示碳减排的现实：《巴黎协定》是让世界变绿还是只是把它涂绿？

IF 13.6 2区经济学

Energy Economics Pub Date : 2025-06-16 DOI: 10.1016/j.eneco.2025.108661

Huijin Zhang , Wenbo Hu

{"title":"Unveiling the reality of carbon reduction: Is the Paris Agreement turning the world green or just painting it green?","authors":"Huijin Zhang , Wenbo Hu","doi":"10.1016/j.eneco.2025.108661","DOIUrl":"10.1016/j.eneco.2025.108661","url":null,"abstract":"<div><div>As global climate change becomes increasingly serious due to the continuous growth of CO<sub>2</sub> emissions, the Paris Agreement has been adopted by most countries in the world. However, whether this global climate change agreement can effectively reduce CO<sub>2</sub> emissions and contribute to achieving the goal of controlling global warming within 2 °C is still widely questioned. Therefore, this study uses staggered difference-in-difference (DID) to examine the impact of the Paris Agreement on CO<sub>2</sub> emissions using historical data for 104 countries from 2010 to 2021, and implements shared socioeconomic pathways (SSPs) to predict global CO<sub>2</sub> emissions from 2020 to 2100. The results show that the Paris Agreement can effectively reduce CO<sub>2</sub> emissions. However, predictions under the five SSPs suggest that current efforts cannot achieve the global carbon emission control targets. The results of this study provide insightful suggestions for the formulation and implementation of future global climate policies to avoid overly optimistic carbon reduction estimates, and contribute to policymakers in various countries realizing the necessity and potential of exploring effective carbon reduction measures.</div></div>","PeriodicalId":11665,"journal":{"name":"Energy Economics","volume":"148 ","pages":"Article 108661"},"PeriodicalIF":13.6,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144298007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0