Article
Thermodynamics
Stefan Petrovic, Fabian Buhler, Uros Radoman, Russell McKenna
Summary: This paper examines the potential of high voltage transformers in Denmark as a district heating source. Through thermodynamic modeling and GIS analysis, it is found that the excess heat from transformers can meet a portion of the district heating demand, but it is a relatively small heating resource on a national scale.
Review
Green & Sustainable Science & Technology
Sidique Gawusu, Xiaobing Zhang, Abubakari Ahmed, Seidu Abdulai Jamatutu, Elvis Djam Miensah, Ayesha Algade Amadu, Frimpong Atta Junior Osei
Summary: The integration of blockchain technology into renewable energy has gained significant attention, indicating a focus on addressing challenges in the evolution process and providing sustainable alternative energy solutions.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Green & Sustainable Science & Technology
Shengqing Xu
Summary: China is undergoing an energy revolution with a goal for renewable energy to comprise 50% of energy consumption by 2050 and to reduce carbon intensity by 60-65% by 2030 from the 2005 level. The paradox of limited renewable energy and expanding fossil energy hinders the challenge to fossil energy dominance in the short term, despite progress made in renewable energy development. This energy transition requires proper mechanisms to accelerate the process while balancing the inertia and importance of traditional energy industries.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2021)
Article
Green & Sustainable Science & Technology
Bartlomiej Iglinski, Urszula Kielkowska, Michal Bernard Pietrzak, Mateusz Skrzatek, Gopalakrishnan Kumar, Grzegorz Piechota
Summary: This article discusses the issues of harnessing the potential of renewable energy sources (RES) at the regional level and the processes of regional energy transition. By assessing the energy potential and the transition process, the article seeks to determine the possibility of achieving regional energy independence and provide arguments for supporting energy transition.
Article
Economics
Katinka Johansen
Summary: This paper examines the history of wind power technologies and their integration into the Danish energy system, highlighting the impact of policy shifts and socio-cultural changes. While wind power has been popular in Denmark, support for local wind farms has become less certain as modern turbines reach industrial scale heights.
Review
Green & Sustainable Science & Technology
Md. Yeasir Hasan, Minhaj Uddin Monir, Mohammad Tofayal Ahmed, Azrina Abd Aziz, Shaik Muntasir Shovon, Faysal Ahamed Akash, Mohammad Forrukh Hossain Khan, Md. Jamal Faruque, Md. Shamiul Islam Rifat, Md. Jafar Hossain, Prionti Kundu, Rafica Akter, Sohag Ali
Summary: Bangladesh, a small country with a large population, has faced challenges such as overpopulation, power grid disruptions, floods, and global warming. Renewable energy, particularly biomass, plays a crucial role in addressing energy issues, especially as the country transitions to an agricultural nation.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Environmental Sciences
Jing Ma
Summary: This study quantitatively investigates the impact of digital money on increasing green energy use in China. The study contributes to the existing knowledge by employing empirical methods and demonstrates the importance of digital financing in promoting renewable energy adoption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Umar Farooq, Jaleel Ahmed, Muhammad Shahbaz
Summary: Given the rise of global warming and economic competition, governments worldwide are struggling to prioritize energy sources that emit less carbon and offer cost-effective solutions. This study examines the dynamic role of various energy sources in safeguarding industrial investments. Using a 10-year dataset from 11 Asian economies and employing panel EGLS and 2-step system GMM models, the analysis reveals the positive and significant impact of renewable, nuclear, and hydroelectric energy sources on corporate investment choices, while highlighting the negative effect of nonrenewable energy sources. The findings also provide insights into how this impact varies across countries without nuclear and hydroelectric power generation, and remain robust across different industrial sectors. This analysis has important policy implications for transitioning from non-renewable to alternative energy sources and promoting electricity production from economical sources, emphasizing the growth-promoting role of specific energy sources in industrial investment expansion.
Article
Energy & Fuels
Tze-Zhang Ang, Mohamed Salem, Mohamad Kamarol, Himadry Shekhar Das, Mohammad Alhuyi Nazari, Natarajan Prabaharan
Summary: Renewable energy is a key element in sustainable and environmentally friendly electricity generation. Research on renewable energy technologies is increasing to improve their performance and efficiency. This paper reviews current renewable energy technologies and suggests solutions for the challenges and limitations they face.
ENERGY STRATEGY REVIEWS
(2022)
Article
Economics
Behnaz Saboori, Hassan F. Gholipour, Ehsan Rasoulinezhad, Omid Ranjbar
Summary: This study evaluates the impact of renewable and non-renewable energy consumption, as well as economic growth, on the unemployment rate in the US. Using fixed effect and SURE models, the findings show mixed results, with the SURE model providing inconsistent results. The empirical results indicate that non-renewable and renewable energy consumption only create job opportunities in some states while also widening the scope of unemployment.
Article
Chemistry, Multidisciplinary
Anna Stoppato, Alberto Benato, Francesco De Vanna
Summary: The study focuses on assessing the environmental impact of storage systems integrated with renewable energy plants, highlighting the importance of proper definition of functional unit in the analysis. It shows that the integration of storage systems with renewable energy has the potential to improve network performance and reduce energy production costs, but the overall environmental sustainability needs further attention. Environmental concerns regarding electrochemical accumulators, particularly heavy metals and chemical components, are discussed. Additionally, the study emphasizes the positive effects of material reuse and recycling in reducing overall impacts.
APPLIED SCIENCES-BASEL
(2021)
Article
Green & Sustainable Science & Technology
Isabel C. Gil-Garcia, Ma Socorro Garcia-Cascales, Habib Dagher, Angel Molina-Garcia
Summary: This paper examines the feasibility of mitigating climate change and promoting energy transition through the integration of electric vehicles and renewable energy sources, combining a multi-indicator analysis to estimate the required penetration of renewable energy in achieving emission reduction targets under different scenarios. The study suggests that various combinations of available renewable resources can significantly reduce emissions.
Article
Environmental Sciences
Mingxing Li, Muhammad Saeed Ashraf, Zhiqiang Ma, Rana Umair Ashraf, Muhammad Usman, Irfan Khan
Summary: This research article examines the dynamic impact of globalization, environmental quality, and financial development on renewable energy in China. The study uses Autoregressive Distributed Lag (ARDL) model and Johansen cointegration technique to analyze the long-run and short-run relationships among the study variables. The results reveal significant relationships between renewable energy and various factors, including globalization, financial development, environmental quality, human capital, economic growth, and carbon emissions.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2023)
Article
Environmental Sciences
Majed Alharthi, Eyup Dogan, Dilvin Taskin
Summary: This study analyzes the factors determining CO2 emissions in the Middle East and North Africa region under the Environmental Kuznets Curve framework. It found that renewable energy consumption significantly reduces emissions, while non-renewable energy consumption increases CO2 emissions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Multidisciplinary Sciences
Natanael Bolson, Pedro Prieto, Tadeusz Patzek
Summary: In light of the consequences of climate change and the war in Ukraine, it is crucial to decarbonize electrical power systems globally while avoiding repeated blackouts. A comprehensive understanding of the performance and reliability of various power sources is essential for this endeavor. The capacity factor serves as a direct measure of the effectiveness and cost of power generation, enabling calculations to determine the necessary capacity to replace or expand current fossil fuel-based electricity generation using solar PV or wind power.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Thermodynamics
Poul Alberg Ostergaard, Sven Werner, Anders Dyrelund, Henrik Lund, Ahmad Arabkoohsar, Peter Sorknaes, Oddgeir Gudmundsson, Jan Eric Thorsen, Brian Vad Mathiesen
Summary: Research on new advanced district heating concepts has been increasing since the definition of the first four generations of district heating in 2014. The fourth generation, which includes cross-sectoral integration into smart energy systems, has provided a framework for potential futures in district heating. To create a similar framework for district cooling, this paper defines the four generations of district cooling, which includes the development of different cooling systems and their integration with other energy sectors.
Article
Green & Sustainable Science & Technology
Henrik Lund, Iva Ridjan Skov, Jakob Zinck Thellufsen, Peter Sorknaes, Andrei David Korberg, Miguel Chang, Brian Vad Mathiesen, Mikkel Strunge Kany
Summary: This paper aims to identify the role of sustainable bioenergy in achieving the Danish government's goals of reducing 70% of CO2 emissions and reaching a fully decarbonised society. The presented methodology and approach are relevant for other countries heading in the same direction. The focus is on developing sustainable biomass resources and conversion technologies within the energy and transport sectors, paired with carbon capture utilisation and storage, to coordinate with other sectors and achieve a fully decarbonised society.
Article
Energy & Fuels
Meng Yuan, Peter Sorknaes, Henrik Lund, Yongtu Liang
Summary: This paper provides a comprehensive analysis of the bidding strategies of large-scale Li-ion batteries in 100% renewable smart energy systems. The results show that large-scale battery storage plays a limited role in future energy systems that follow the smart energy system concept. The findings of this study provide general strategies for battery bidding and operation in 100% RE systems.
Editorial Material
Thermodynamics
Henrik Lund, Poul Alberg ostergaard, Neven Duic, Brian Vad Mathiesen
Article
Thermodynamics
Peter Sorknaes, Rasmus M. Johannsen, Andrei D. Korberg, Tore B. Nielsen, Uni R. Petersen, Brian Mathiesen
Summary: Future renewable energy systems with high shares of variable renewable energy production require technologies and measures to balance production fluctuations, such as electricity storage, energy demand adaptation, and sector coupling. This study evaluates the role of industry electrification in different renewable energy system scenarios and finds that prioritizing direct electrification of industrial process heat demand is preferable.
Article
Green & Sustainable Science & Technology
Henrik Lund, Jakob Zinck Thellufsen, Peter Sorknaes, Brian Vad Mathiesen, Miguel Chang, Poul Thois Madsen, Mikkel Strunge Kany, Iva Ridjan Skov
Summary: This paper proposes a strategy for achieving a fully decarbonized Danish energy system by 2045, which could also be applicable globally. The analysis includes computer simulations on an hourly basis to design a Smart Energy System that can balance all sectors of the energy system. The analysis considers various factors such as international shipping and aviation, sustainable biomass utilization, and energy exchange with neighboring countries. Furthermore, the energy system is coordinated with other sectors to achieve a fully decarbonized society. The paper also discusses the employment impact of investing in decarbonizing the Danish economy.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Review
Green & Sustainable Science & Technology
P. A. Ostergaard, H. Lund, J. Z. Thellufsen, P. Sorknaes, B. V. Mathiesen
Summary: Energy systems analyses play a crucial role in transitioning towards renewable energy-based energy systems. This article examines the validity and contribution of EnergyPLAN through a comprehensive analysis of its applications and findings. The study reveals the widespread use of EnergyPLAN across different systems and stages of development, and highlights important insights obtained through its application.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Thermodynamics
Zvonimir Guzovic, Neven Duic, Antonio Piacentino, Natasa Markovska, Brian Vad Mathiesen, Henrik Lund
Summary: This paper presents an overview of researches in the field of emissions reduction and energy, contributing to the achievement of the goals of the Paris Agreement.
Article
Thermodynamics
Miguel Chang, Henrik Lund, Jakob Zinck Thellufsen, Poul Alberg Ostergaard
Summary: Energy system models are crucial for planning the energy transition and understanding its impacts. However, because of the complexity of this transition, one model alone is often insufficient. Therefore, linking different model classes has become a common practice to gain insights about the energy system. While previous literature has focused on proposing structures for multi-model analyses or including specific aspects from other knowledge domains, there is a lack of high-level overview of model coupling. This article provides an outlook on coupling ESM paradigms and model coupling with other knowledge dimensions, highlighting the importance of purpose-driven model coupling for answering specific questions about the energy transition.
Article
Chemistry, Physical
Andrei David Korberg, Jakob Zinck Thellufsen, Iva Ridjan Skov, Miguel Chang, Susana Paardekooper, Henrik Lund, Brian Vad Mathiesen
Summary: This paper analyzes the feasibility of using hydrogen as a direct fuel in all energy sectors in a 100% renewable energy system for Europe in 2050. The results indicate that using hydrogen for heating purposes is costly and inefficient, while hydrogen for electricity production is only beneficial in limited quantities due to losses. In the transport sector, hydrogen is an expensive alternative to liquid e-fuels and electrified transport due to high infrastructure costs and low energy efficiency. In the industry sector, hydrogen may be beneficial for reducing biomass at a lower cost, but electrification and e-methane may be more feasible options.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Rasmus Magni Johannsen, Brian Vad Mathiesen, Katerina Kermeli, Wina Crijns-Graus, Poul Alberg Ostergaard
Summary: This paper presents the use of the tool IndustryPLAN to replace fossil fuels with renewable energy in the European industrial sector. The results show that known technologies can decarbonise most of the industry, but limiting bioenergy consumption is a critical challenge. A full transition to renewable energy requires sustainable investments from 2030 onwards and full decarbonisation of grid electricity.
Article
Thermodynamics
Tianrun Yang, Wen Liu, Qie Sun, Weihao Hu, Gert Jan Kramer
Summary: This study proposes an integrated optimization criterion to examine the influence of local context on the optimal configuration planning, techno-economic-environmental performance, and feasibility of STES application. It identifies the position of STES in comparison to other sustainable heating options considering the local context, highlighting the importance of the local context in determining the feasibility of STES in the clean heating transition.
Article
Green & Sustainable Science & Technology
Kang Xiong, Weihao Hu, Di Cao, Sichen Li, Guozhou Zhang, Wen Liu, Qi Huang, Zhe Chen
Summary: This paper constructs a renewable energy powered multi-energy hub system, integrating a thermo-electrochemical effect based P2A facility. The energy management is formulated as a multi-agent coordinated optimization problem to minimize operating cost and carbon dioxide emissions while satisfying constraints. The proposed method, utilizing the CommNet deep reinforcement learning, achieves better performance in reducing operating cost and carbon emissions compared to other benchmark methods.
Article
Energy & Fuels
Brian Vad Mathiesen, Rasmus Magni Johannsen, Katerina Kermeli, Wina Crijns-Graus, Henrik Lund, Iva Ridjan Skov
Summary: The green transition of industry is crucial for achieving the goals of the Paris Agreement. This paper introduces seven guiding principles and a freeware tool, IndustryPLAN, to quantify and implement strategies for the decarbonization of industry. The tool enables specific analyses of climate mitigation measures and resilience against fuel, electricity, and technology price fluctuations. The combination of the guiding principles methodology and the IndustryPLAN tool identifies significant energy savings and the potential for full decarbonization with a 100% renewable energy supply for industry.
Article
Energy & Fuels
Shitong Fang, Houfan Du, Tao Yan, Keyu Chen, Zhiyuan Li, Xiaoqing Ma, Zhihui Lai, Shengxi Zhou
Summary: This paper proposes a new type of nonlinear VIV energy harvester (ANVEH) that compensates for the decrease in peak energy output at low wind speeds by introducing an auxiliary structure. Theoretical and experimental results show that ANVEH performs better than traditional nonlinear VIV energy harvesters under various system parameter variations.
Article
Energy & Fuels
Wei Jiang, Shuo Zhang, Teng Wang, Yufei Zhang, Aimin Sha, Jingjing Xiao, Dongdong Yuan
Summary: A standardized method was developed to evaluate the availability of solar energy resources in road areas, which combined the Analytic Hierarchy Process (AHP) and the Geographic Information System (GIS). By analyzing critical factors and using a multi-indicator evaluation method, the method accurately evaluated the utilization of solar energy resources and guided the optimal location selection for road photovoltaic (PV) projects. The results provided guidance for the application of road PV projects and site selection for route corridors worldwide, promoting the integration of transportation and energy.
Article
Energy & Fuels
Chang Liu, Jacob A. Wrubel, Elliot Padgett, Guido Bender
Summary: The study investigates the effects of coating defects on the performance of the anode porous transport layer (PTL) in water electrolyzers. The results show that an increasing fraction of uncoated regions on the PTL leads to decreased cell performance, with continuous uncoated regions having a more severe impact compared to multiple thin uncoated strips.
Article
Energy & Fuels
Marcos Tostado-Veliz, Xiaolong Jin, Rohit Bhakar, Francisco Jurado
Summary: In this paper, a coordinated charging price mechanism for clusters of parking lots is proposed. The research shows that enabling vehicle-to-grid characteristics can bring significant economic benefits for users and the cluster coordinator, and vehicle-to-grid impacts noticeably on the risk-averse character of the uncertainty-aware strategies. The developed pricing mechanism can reduce the cost for users, avoiding to directly translate the energy cost to charging points.
Article
Energy & Fuels
Duan Kang
Summary: Building an energy superpower is a key strategy for China and a long-term goal for other countries. This study proposes an evaluation system and index for measuring energy superpower, and finds that China has significantly improved its ranking over the past 21 years, surpassing other countries.
Article
Energy & Fuels
Fucheng Deng, Yifei Wang, Xiaosen Li, Gang Li, Yi Wang, Bin Huang
Summary: This study investigated the synergistic blockage mechanism of sand and hydrate in gravel filling layer and the evolution of permeability in the layer. Experimental models and modified permeability models were established to analyze the effects of sand particles and hydrate formation on permeability. The study provided valuable insights for the safe and efficient exploitation of hydrate reservoirs.
Article
Energy & Fuels
Hao Wang, Xiwen Chen, Natan Vital, Edward Duffy, Abolfazl Razi
Summary: This study proposes a HVAC energy optimization model based on deep reinforcement learning algorithm. It achieves 37% energy savings and ensures thermal comfort for open office buildings. The model has a low complexity, uses a few controllable factors, and has a short training time with good generalizability.
Article
Energy & Fuels
Moyue Cong, Yongzhuo Gao, Weidong Wang, Long He, Xiwang Mao, Yi Long, Wei Dong
Summary: This study introduces a multi-strategy ultra-wideband energy harvesting device that achieves high power output without the need for external power input. By utilizing asymmetry, stagger array, magnetic coupling, and nonlinearity strategies, the device maintains a stable output voltage and high power density output at non-resonant frequencies. Temperature and humidity monitoring are performed using Bluetooth sensors to adaptively assess the device.
Article
Energy & Fuels
Tianshu Dong, Xiudong Duan, Yuanyuan Huang, Danji Huang, Yingdong Luo, Ziyu Liu, Xiaomeng Ai, Jiakun Fang, Chaolong Song
Summary: Electrochemical water splitting is crucial for hydrogen production, and improving the hydrogen separation rate from the electrode is essential for enhancing water electrolyzer performance. However, issues such as air bubble adhesion to the electrode plate hinder the process. Therefore, a methodology to investigate the two-phase flow within the electrolyzer is in high demand. This study proposes using a microfluidic system as a simulator for the electrolyzer and optimizing the two-phase flow by manipulating the micro-structure of the flow.
Article
Energy & Fuels
Shuo Han, Yifan Yuan, Mengjiao He, Ziwen Zhao, Beibei Xu, Diyi Chen, Jakub Jurasz
Summary: Giving full play to the flexibility of hydropower and integrating more variable renewable energy is of great significance for accelerating the transformation of China's power energy system. This study proposes a novel day-ahead scheduling model that considers the flexibility limited by irregular vibration zones (VZs) and the probability of flexibility shortage in a hydropower-variable renewable energy hybrid generation system. The model is applied to a real hydropower station and effectively improves the flexibility supply capacity of hydropower, especially during heavy load demand in flood season.
Article
Energy & Fuels
Zhen Wang, Kangqi Fan, Shizhong Zhao, Shuxin Wu, Xuan Zhang, Kangjia Zhai, Zhiqi Li, Hua He
Summary: This study developed a high-performance rotary energy harvester (AI-REH) inspired by archery, which efficiently accumulates and releases ultralow-frequency vibration energy. By utilizing a magnetic coupling strategy and an accumulator spring, the AI-REH achieves significantly accelerated rotor speeds and enhanced electric outputs.
Article
Energy & Fuels
Yi Yang, Qianyi Xing, Kang Wang, Caihong Li, Jianzhou Wang, Xiaojia Huang
Summary: In this study, a novel hybrid Quantile Regression (QR) model is proposed for Probabilistic Load Forecasting (PLF). The model integrates causal dilated convolution, residual connection, and Bidirectional Long Short-Term Memory (BiLSTM) for multi-scale feature extraction. In addition, a Combined Probabilistic Load Forecasting System (CPLFS) is proposed to overcome the inherent flaws of relying on a single model. Simulation results show that the hybrid QR outperforms traditional models and CPLFS exceeds the best benchmarks in terms of prediction accuracy and stability.
Article
Energy & Fuels
Wen-Jiang Zou, Young-Bae Kim, Seunghun Jung
Summary: This paper proposes a dynamic prediction model for capacity fade in vanadium redox flow batteries (VRFBs). The model accurately predicts changes in electrolyte volume and capacity fade, enhancing the competitiveness of VRFBs in energy storage applications.
Article
Energy & Fuels
Yuechao Ma, Shengtie Wang, Guangchen Liu, Guizhen Tian, Jianwei Zhang, Ruiming Liu
Summary: This paper focuses on the balance of state of charge (SOC) among multiple battery energy storage units (MBESUs) and bus voltage balance in an islanded bipolar DC microgrid. A SOC automatic balancing strategy is proposed considering the energy flow relationship and utilizing the adaptive virtual resistance algorithm. The simulation results demonstrate the effectiveness of the proposed strategy in achieving SOC balancing and decreasing bus voltage unbalance.
Article
Energy & Fuels
Raad Z. Homod, Basil Sh. Munahi, Hayder Ibrahim Mohammed, Musatafa Abbas Abbood Albadr, Aissa Abderrahmane, Jasim M. Mahdi, Mohamed Bechir Ben Hamida, Bilal Naji Alhasnawi, A. S. Albahri, Hussein Togun, Umar F. Alqsair, Zaher Mundher Yaseen
Summary: In this study, the control problem of the multiple-boiler system (MBS) is formulated as a dynamic Markov decision process and a deep clustering reinforcement learning approach is applied to obtain the optimal control policy. The proposed strategy, based on bang-bang action, shows superior response and achieves more than 32% energy saving compared to conventional fixed parameter controllers under dynamic indoor/outdoor actual conditions.
