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Energies publishes Special Issues to create collections of papers on specific topics, with the aim of building a community of authors and readers to discuss the latest research and develop new ideas and research directions. Special Issues are led by Guest Editors, who are experts on the topic and all Special Issue submissions follow MDPI's standard editorial process. The journal’s Editor-in-Chief and/or designated Editorial Board Member will oversee Guest Editor appointments and Special Issue proposals, checking their content for relevance and ensuring the suitability of the material for the journal. The papers published in a Special Issue will be collected and displayed on a dedicated page of the journal’s website. Further information on MDPI's Special Issue policies and Guest Editor responsibilities can be found here. For any inquiries related to a Special Issue, please contact the Editorial Office.

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Biotechnological Energy Conversion Technology: New Advances in Biosolids Management and Wastewater Treatment
edited by and Kalpit Shah
submission deadline 5 Sep 2025 | Viewed by 64 | Submission Open
Keywords: volume reduction; advanced thermal conversion; contaminants of emerging concerns; circular resource recovery; odour and greenhouse gas emissions; sludge-to-energy treatment; biomethane generation; biochar for energy and environmental applications
(This special issue belongs to the Section A4: Bio-Energy)
Innovative Electro/Photocatalysts for Energy Conversion: Graphene and g-C3N4-Based Materials
edited by Tahir Muhmood
submission deadline 5 Sep 2025 | Viewed by 62 | Submission Open
Keywords: energy conversion; graphene; g-C₃N₄ (graphitic carbon nitride); photocatalysis; electrocatalysis
(This special issue belongs to the Section D1: Advanced Energy Materials)
Intensifying Anaerobic Digestion: Biotechnological Innovations for Enhanced Energy Conversion
edited by
submission deadline 5 Sep 2025 | Viewed by 61 | Submission Open
Keywords: anaerobic digestion; intensification process; circular bioeconomy; enzymes; biotransformation; industrial biotechnology; waste management; environmental
(This special issue belongs to the Section A4: Bio-Energy)
Recent Advances in Biofuels Production and Usage: Challenges and Solutions—2nd Edition
edited by
submission deadline 5 Sep 2025 | Viewed by 59 | Submission Open
Keywords: biofuels; production technology solutions; gaseous emission; biodiesel use; catalysts for biofuels production; biofuels burning assessment
(This special issue belongs to the Section A4: Bio-Energy)
Functional Materials for Advanced Energy Applications submission deadline 5 Sep 2025 | Viewed by 44 | Submission Open
Keywords: materials engineering; electronics; renewable energy sources; artificial intelligence
(This special issue belongs to the Section D1: Advanced Energy Materials)
Science and Technology of Combustion for Clean Energy
edited by
submission deadline 7 Sep 2025 | 1 articles | Viewed by 868 | Submission Open
Keywords: energy; green fuels; combustion process; combustion technology; energy production and storage; safety; experimental; simulation
(This special issue belongs to the Section I2: Energy and Combustion Science)
Advanced Technology for Solar Thermal Cooling, Heating, and Energy Storage
edited by , Dingli Duan and
submission deadline 10 Sep 2025 | 8 articles | Viewed by 7531 | Submission Open
Keywords: solar energy; solar thermal cooling; sorption system; energy storage power generation; evaporative cooling; fault-tolerant
(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)
The Evolution and Future Prospects of Combustion Engines for Enhancing Energy Efficiency and Minimizing Environmental Impact
edited by Vikas Sharma, Justin Jacob Thomas and Valter Bruno Silva
submission deadline 10 Sep 2025 | 4 articles | Viewed by 4657 | Submission Open
Keywords: alternative fuels; carbon free fuel; combustion technology; fuel spray; CFD modeling
(This special issue belongs to the Section I2: Energy and Combustion Science)
Biomass to Liquid Fuels
edited by Wenzhi Li
submission deadline 10 Sep 2025 | 4 articles | Viewed by 3678 | Submission Open
Keywords: biomass conversion; liquid fuels; biomass gasification; biomass pyrolysis; biomass catalytic depolymerization
(This special issue belongs to the Section A4: Bio-Energy)
Power Quality Monitoring with Energy Saving Goals submission deadline 10 Sep 2025 | 3 articles | Viewed by 2894 | Submission Open
Keywords: power quality (PQ); PQ monitoring; PQ measurements; energy saving; power filters; PQ improvement; reactive power; power losses; voltage and current distortion
(This special issue belongs to the Section F1: Electrical Power System)
Biomass for Biodiesel and Bioethanol Production
edited by and Leticia Pérez-Rial
submission deadline 10 Sep 2025 | 2 articles | Viewed by 2867 | Submission Open
Keywords: biomass; biodiesel; bioethanol
(This special issue belongs to the Section A4: Bio-Energy)
Green Hydrogen Energy Production
edited by
submission deadline 10 Sep 2025 | 3 articles | Viewed by 1697 | Submission Open
Keywords: green hydrogen energy; electrolysis technologies; renewable energy integration; system integration; materials and catalysts; storage and transportation; environmental impact; industrial applications; security
(This special issue belongs to the Section A5: Hydrogen Energy)
Hybrid Electric Powertrain System Modelling and Control
edited by and Bolan Liu
submission deadline 10 Sep 2025 | 1 articles | Viewed by 1635 | Submission Open
Keywords: hybrid electric powertrain; modelling; control; vehicle system dynamics
(This special issue belongs to the Section E: Electric Vehicles)
Future Prospects for Renewable Energy Applications
edited by Prabodh Illukpitiya and Doc Lap Tran
submission deadline 10 Sep 2025 | 1 articles | Viewed by 1229 | Submission Open
Keywords: renewable energy; sustainability; innovation; applications
(This special issue belongs to the Section A: Sustainable Energy)
Climate Change in Power and Energy Systems: Challenges, Innovations, and Solutions submission deadline 10 Sep 2025 | 3 articles | Viewed by 1098 | Submission Open
Keywords: climate change; global warming; summer and winter temperatures; extreme weather events; electrical power; energy systems; renewable energy systems; building energy efficiency; artificial intelligence; machine learning; and deep learning; renewable energy resources; digitalization; environmental assessment; sustainable heating and cooling solutions; heat pumps and refrigeration systems using natural refrigerants
(This special issue belongs to the Section B: Energy and Environment)
Green Energy Integrated Building Application
edited by , Xiangzhao Meng and Jingyuan Zhao
submission deadline 10 Sep 2025 | 1 articles | Viewed by 1071 | Submission Open
Keywords: green energy; building; integrated application
(This special issue belongs to the Section G: Energy and Buildings)
Research on Biomass Resource Utilization and Management
edited by , Achraf El Kasmi and Fouad Dimane
submission deadline 10 Sep 2025 | Viewed by 796 | Submission Open
Keywords: biomass characterization and pretreatment; thermochemical conversion; biochemical and microbial conversion; catalytic processes in biomass valorization; waste biomass utilization; biorefinery and circular economy; environmental and life cycle assessment; policy; economics; and supply chain management; innovative biomass-based materials; hybrid and emerging technologies
(This special issue belongs to the Section B: Energy and Environment)
Sustainable Transportation Systems with Electric and Autonomous Vehicles
edited by
submission deadline 10 Sep 2025 | 1 articles | Viewed by 532 | Submission Open
Keywords: sustainable transportation; electric vehicle; autonomous vehicle; electric vehicle use; autonomous vehicle policy; battery technology; cost analysis
(This special issue belongs to the Section E: Electric Vehicles)
Advancements in Heat Transfer and Fluid Flow for Energy Applications
edited by Hongxia Chen and Fengmin Su
submission deadline 10 Sep 2025 | 1 articles | Viewed by 465 | Submission Open
Keywords: heat and mass transfer  ; heat transfer enhancement technology; multi-phase flow measurement and modulation; energy storage; advanced thermodynamic cycle in energy utilization; heat transfer in the recycling of renewable energy
(This special issue belongs to the Section J: Thermal Management)
The Sustainable Approaches of Energy Management and Intelligent Load Forecasting of HVAC Systems in Buildings
edited by
submission deadline 10 Sep 2025 | Viewed by 430 | Submission Open
Keywords: energy management; energy efficiency; energy building; HVAC system; load forecasting; thermal comfort; artificial neural networks (ANNs); fuzzy theory
(This special issue belongs to the Section G: Energy and Buildings)
Life Cycle and Costs Assessment for a New Generation Low-Impact Transport Sector
edited by Benedetta Peiretti Paradisi and
submission deadline 10 Sep 2025 | Viewed by 386 | Submission Open
Keywords: Life Cycle Assessment (LCA); Greenhouse Gas (GHG); electric; hydrogen; biofuel; and hybrid technologies; transport sector  
(This special issue belongs to the Section B: Energy and Environment)
Application of Predictive Control in the Integration and Energy Conversion of Renewable Energy
edited by , Zhen Li, Yanhua Liu, Oluleke Babayomi and Yu Li
submission deadline 10 Sep 2025 | Viewed by 253 | Submission Open
Keywords: predictive control; power electronics; energy conversion systems; reliability; predictive maintenance and fault detection; grid stability and smart grids
(This special issue belongs to the Section A: Sustainable Energy)
Exploration and Development of Unconventional Oil and Gas Resources: Latest Advances and Prospects: 3rd Edition
edited by , Wei Ju, Shida Chen, and Jiang Han
submission deadline 10 Sep 2025 | 1 articles | Viewed by 210 | Submission Open
Keywords: unconventional oil and gas; exploration and development; reservoir evaluation; seepage mechanism; hydrocarbon enrichment model; reservoir petrophysics
(This special issue belongs to the Section H: Geo-Energy)
Layer-by-Layer Organic Photovoltaics
edited by , and Xiaoling Ma
submission deadline 10 Sep 2025 | Viewed by 208 | Submission Open
Keywords: organic photovoltaics; layer by layer; exciton utilization; stability
(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)
Advances in Solar-Driven Water Splitting
edited by
submission deadline 10 Sep 2025 | Viewed by 170 | Submission Open
Keywords: solar-driven water splitting; photoelectrochemical; photovoltaics; electrolysis; photocatalysts; solar energy conversion
(This special issue belongs to the Section A5: Hydrogen Energy)
Supercritical CO2 Power Cycles
edited by , Cheng Xu, , and Hao Qiu
submission deadline 10 Sep 2025 | Viewed by 126 | Submission Open
Keywords: supercritical CO2; Brayton cycle; energy storage cycle; flow and fluid machinery; heat transfer; modeling; design; application; control
(This special issue belongs to the Section B: Energy and Environment)
Advances in Optimized Energy Harvesting Systems and Technology
edited by
submission deadline 10 Sep 2025 | Viewed by 97 | Submission Open
Keywords: energy harvesting; ambient energy; low-power generation; power electronics; energy storage
(This special issue belongs to the Section B: Energy and Environment)
Modelling, Design and Control Optimizations of Electrified and Connected Vehicles
edited by , Hongqiang Guo and Hailong Zhang
submission deadline 10 Sep 2025 | Viewed by 95 | Submission Open
Keywords: electrified and connected vehicles; model construction; system design; control optimization; technological innovation
(This special issue belongs to the Section E: Electric Vehicles)
Operation Safety and Simulation of Nuclear Energy Power Plant
edited by Jun Yang and Rong Liu
submission deadline 10 Sep 2025 | Viewed by 82 | Submission Open
Keywords: nuclear safety and simulation; operator support system; prognostic and health management
(This special issue belongs to the Section B4: Nuclear Energy)
Advancing the Urban Energy Transition: Opportunities, Barriers and Challenges of Positive Energy Districts and Community-Based Energy Systems Towards Carbon Neutrality submission deadline 10 Sep 2025 | Viewed by 74 | Submission Open
Keywords: positive energy districts; renewable energy communities; district energy systems; renewable energy; energy efficiency; energy transition; carbon neutrality; energy democracy
(This special issue belongs to the Section B: Energy and Environment)
Integrated Solutions for Transportation and Energy Systems: Advancing Sustainable Mobility and Power Infrastructure
edited by Yanxia Wang, Yihuan Li, Dapeng Yan, , Shaojun Gan and Yiqiao Li
submission deadline 10 Sep 2025 | Viewed by 73 | Submission Open
Keywords: electric vehicle and smart charging infrastructure; virtual power plants; transportation energy management systems; policy and economic framework; advanced modeling and control; optimization techniques; energy storage and smart grid
(This special issue belongs to the Section B: Energy and Environment)
Biomass Conversion Technologies: 4th Edition
edited by
submission deadline 10 Sep 2025 | Viewed by 58 | Submission Open
Keywords: biomass; biofuel; bioenergy; biorefinery; chemicals; physical conversion; thermochemical conversion; chemical conversion; biological conversion; process optimization; process design; thermodynamic analysis; gasification process; process modeling
(This special issue belongs to the Section A4: Bio-Energy)
Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications: 3rd Edition submission deadline 10 Sep 2025 | Viewed by 52 | Submission Open
Keywords: linear circuit; nonlinear circuit; solving methods; software tools for circuit simulation; computer-aided design; equivalent circuits; mathematical techniques; numerical techniques; electronics; converters; sensors; filter design; electrical and electronic devices; power networks
(This special issue belongs to the Section F: Electrical Engineering)
Unconventional Energy Exploration Technology
edited by Dongyu Wu
submission deadline 10 Sep 2025 | Viewed by 38 | Submission Open
Keywords: unconventional reservoir; renewable energy; low-carbon energy technologies; machine learning; reservoir stimulation techniques; shale gas; methane hydrates; geothermal reservoirs
(This special issue belongs to the Section H: Geo-Energy)
Advanced Bioenergy, Biomass and Waste Conversion Technologies: 2nd Edition
edited by Małgorzata Sieradzka
submission deadline 10 Sep 2025 | Viewed by 37 | Submission Open
Keywords: biomass; char; refuse-derived fuel; waste management; circular economy; bioenergy; fuel characterization; sustainability; waste valorization; energy recovery; thermal conversion; torrefaction; pyrolysis; gasification; hydrothermal carbonization; combustion
(This special issue belongs to the Section A4: Bio-Energy)
New Challenges in Carbon Capture, Utilization and Storage
edited by and
submission deadline 10 Sep 2025 | Viewed by 33 | Submission Open
Keywords: carbon capture; carbon mitigation; CO2 mineralisation; direct air capture; oxy-fuel combustion; carbon negative technologies; circular carbon economy; industrial decarbonization; IPCC Net zero pathways; policy innovation
(This special issue belongs to the Section B3: Carbon Emission and Utilization)
Advances in Magnetic Energy Harvester Technology
edited by Alexander Abramovitz
submission deadline 10 Sep 2025 | Viewed by 32 | Submission Open
Keywords: magnetic energy harvester; magnetic core; hysteresis; magnetic losses; rectifiers; active rectifiers; switch- mode power processors
(This special issue belongs to the Section F3: Power Electronics)
Trends and Prospects in Engine Combustion: 2nd Edition
edited by
submission deadline 10 Sep 2025 | Viewed by 31 | Submission Open
Keywords: physics and chemistry in engine combustion; engine fuels; high-frequency laser diagnostics in engine combustion; low-temperature catalysis; high-pressure and dilute combustion; new concept engine combustion; digital twin/AI modeling used in engine combustion
(This special issue belongs to the Section I2: Energy and Combustion Science)
Grid Integration of Renewable Energy Conversion Systems—2nd Edition
edited by , Janaína Gonçalves De Oliveira and
submission deadline 10 Sep 2025 | Viewed by 29 | Submission Open
Keywords: renewable energy conversion systems; hybrid and co-located power parks; control strategies and optimization; optimal planning for renewable integration; regulation strategies for renewable integration; energy storage systems and their optimization
(This special issue belongs to the Section A1: Smart Grids and Microgrids)
Advances in Photovoltaic/Solar Collectors and Their Potential for an Industrial Decarbonization: 2nd Edition
edited by Bruno D. Tibúrcio
submission deadline 10 Sep 2025 | Viewed by 28 | Submission Open
Keywords: solar collectors; industrial decarbonization; PV cells; solar tracking
(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)
Sustainable Energy Transition: Urban Planning and Climate Change submission deadline 13 Sep 2025 | Viewed by 55 | Submission Open
Keywords: climate change; mobility; urban planning; GHG emissions; carbon footprint; sustainable development; energy transition
(This special issue belongs to the Section B: Energy and Environment)
The 15th International Conference on Thermal Engineering: Theory and Applications
edited by and Mohammad Mansur Rahman
submission deadline 14 Sep 2025 | Viewed by 699 | Submission Open
Keywords: energy; thermal management; environment; heat and mass transfer; fluid flow
(This special issue belongs to the Section J: Thermal Management)
Building Energy Performance Modelling and Simulation
edited by , and Agnes Psikuta
submission deadline 15 Sep 2025 | 9 articles | Viewed by 9460 | Submission Open
Keywords: building; building performance simulation; CFD; validation; modelling; optimisation; energy consumption; thermal comfort; thermal sensation; visual comfort; BIM
(This special issue belongs to the Section G: Energy and Buildings)
Electric and Hybrid Vehicles: Technology Trends, Challenges and Opportunities—2nd Edition submission deadline 15 Sep 2025 | 5 articles | Viewed by 9356 | Submission Open
Keywords: electric vehicles; charging stations; smart grids; renewable energy; energy efficiency and demand response; energy storage systems; power quality; vehicle dynamics; motion control; vehicle stability control; environmental issues; life-cycle assessment
(This special issue belongs to the Section E: Electric Vehicles)
Advances in Electrical Power System Quality submission deadline 15 Sep 2025 | 9 articles | Viewed by 9059 | Submission Open
Keywords: power electronics; power systems quality; energy system; optimization techniques; control methods; energy storage system; renewable energy; evolutionary computation; genetic algorithms; AI
(This special issue belongs to the Section F1: Electrical Power System)
Application of Machine Learning Tools for Energy System
edited by
submission deadline 15 Sep 2025 | 5 articles | Viewed by 8133 | Submission Open
Keywords: optimization; prediction; performance evaluation; IoT; classification; deep learning; machine learning; power systems
(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)
Hydrogen Storage and Transportation: Materials, Technologies, and Infrastructure Development
edited by , and Wojciech Kosman
submission deadline 15 Sep 2025 | 5 articles | Viewed by 5348 | Submission Open
Keywords: hydrogen; storage; transportation; safety
(This special issue belongs to the Section A5: Hydrogen Energy)
Research on Advanced Energy Materials for Meeting Global Energy Challenges
edited by Krzysztof Jastrzębski and
submission deadline 15 Sep 2025 | 5 articles | Viewed by 5140 | Submission Open
(This special issue belongs to the Section D1: Advanced Energy Materials)
State-of-the-Art Machine Learning Tools for Energy Systems submission deadline 15 Sep 2025 | 3 articles | Viewed by 4603 | Submission Open
Keywords: machine learning; energy systems; energy production; energy saving
(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)
Modelling, Analysis and Control of AC/DC Power Systems with High Penetration of Renewable Energy
edited by Shilin Gao, Zongsheng Zheng and
submission deadline 15 Sep 2025 | 4 articles | Viewed by 4042 | Submission Open
Keywords: AC/DC power system; renewable energy; stability analysis; control; modelling
(This special issue belongs to the Section F1: Electrical Power System)
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