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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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Hydraulic System Simulation and Hydro Turbines for Pumped Storage and Hydroelectricity
edited by , , Giacomo Zanetti and Francesco Nascimben
submission deadline 25 Jun 2026 | Viewed by 271 | Submission Open
Keywords: hydropower; CFD; flexibility; hybridization; optimization; design; reliability
(This special issue belongs to the Section D: Energy Storage and Application)
Advances in the Development of Geoenergy: 3rd Edition
edited by , , and Liangliang Zhang
submission deadline 25 Jun 2026 | Viewed by 115 | Submission Open
Keywords: unconventional reservoirs; EOR; fracturing; CCUS; geoenergy
(This special issue belongs to the Section H: Geo-Energy)
Artificial Intelligence and Machine Learning Applications in Electric Power and Energy Systems
edited by and Xiaoming Liu
submission deadline 25 Jun 2026 | Viewed by 8 | Submission Open
Keywords: data-driven methods; power and energy systems; renewable energy integration; integrated energy systems; smart grid; microgrid; demand response; energy storage systems; economic dispatch; cyber– physical system security
(This special issue belongs to the Section F1: Electrical Power System)
Innovations in Fuel Cell Technologies: Advancements and Future Directions submission deadline 26 Jun 2026 | 1 articles | Viewed by 1428 | Submission Open
Keywords: fuel cells; polymer electrolyte membrane fuel cells (PEMFCs); proton exchange; direct methanol; solid oxide fuel cells (SOFCs); molten carbonate fuel cells (MCFCs); alkaline fuel cells (AFCs); phosphoric acid fuel cells (PAFCs); hybrid fuel cells; fuel flexibility; fuel cell electric vehicles; portable power; stationary power generation
(This special issue belongs to the Section B: Energy and Environment)
Solar Energy and Photovoltaic Systems: Prospect Development and Challenges submission deadline 30 Jun 2026 | 9 articles | Viewed by 20886 | Submission Open
Keywords: solar cells and PV systems; concentrated solar power (CSP); optical materials and photonics; solar energy conversion
(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)
Design, Analysis and Operation of Renewable Energy Systems
edited by and Luca Cimmino
submission deadline 30 Jun 2026 | 4 articles | Viewed by 7460 | Submission Open
Keywords: renewable energy systems; hybrid energy systems; energy storage; wind turbine; photovoltaics; polygeneration; hydrogen energy storage; energy policy
(This special issue belongs to the Section A: Sustainable Energy)
Green Innovation and Sustainable Energy Transition: Opportunities and Challenges
edited by Fabio Maria Montagnino
submission deadline 30 Jun 2026 | 5 articles | Viewed by 6120 | Submission Open
Keywords: sustainable energy; green innovation; green business models; socio-technical transition
(This special issue belongs to the Section C: Energy Economics and Policy)
Advancements in Gas Turbine Aerothermodynamics submission deadline 30 Jun 2026 | 3 articles | Viewed by 5008 | Submission Open
Keywords: gas turbine aerothermodynamics; high-fidelity simulations; experimental investigations; flow dynamics; heat transfer; turbine cooling; combustion optimization; emission reduction; hybrid numerical– experimental approaches; artificial intelligence in turbine design; machine learning applications; sustainable energy systems; climate change mitigation; turbulence modeling; performance optimization
(This special issue belongs to the Section I2: Energy and Combustion Science)
Innovation in High-Voltage Technology and Power Management
edited by and Jun Chen
submission deadline 30 Jun 2026 | 2 articles | Viewed by 2265 | Submission Open
Keywords: high-power electronics; power conversion; power management; online diagnosis for power equipment; power equipment condition monitoring; overvoltage protection; insulation materials; partial discharge; relaying protection; pulsed power; insulation state evaluation
(This special issue belongs to the Section F: Electrical Engineering)
Biomass Power Generation and Gasification Technology submission deadline 30 Jun 2026 | 2 articles | Viewed by 2239 | Submission Open
Keywords: biomass-based combined heat and power; biomass-based combined cycles; BIGCC
(This special issue belongs to the Section A4: Bio-Energy)
Next-Generation Electric Machines: Design, Control, and Fault Diagnosis
edited by
submission deadline 30 Jun 2026 | 2 articles | Viewed by 1276 | Submission Open
Keywords: electric machines; electromagnetic/thermal design; new materials and magnetic composites; multiphysics modeling approaches; electrical machine control; electric propulsion; electric machines in transportation electrification; fault diagnosis; fault-tolerant methods
(This special issue belongs to the Section F: Electrical Engineering)
Advanced Technologies in Waste-to-Bioenergy
edited by Loukia P. Chrysikou and
submission deadline 30 Jun 2026 | 3 articles | Viewed by 1188 | Submission Open
Keywords: bioenergy and biofuels production from waste; waste valorization; circular economy; techno-economic analysis (TEA); life cycle assessment (LCA); sustainable waste management
(This special issue belongs to the Section A4: Bio-Energy)
Development of Energy Harvesting Systems and Methods from Uncommon Sources: 2nd Edition submission deadline 30 Jun 2026 | 1 articles | Viewed by 1039 | Submission Open
Keywords: energy harvesting; energy sources; unconventional sources and methods; smart methods; artificial intelligence methods; distributed systems; waste utilizing; post-mining energy; post-industry energy; biological energy systems; metrological problems; personal devices; micro and nano devices; energy storage systems
(This special issue belongs to the Section D: Energy Storage and Application)
Threats and Protection of Energy Systems
edited by
submission deadline 30 Jun 2026 | Viewed by 463 | Submission Open
Keywords: safety and security power systems; dual-use innovative power energy solutions; intrusion detection/prevention systems; software multi-agent solutions for power systems; energy infrastructure security; risk assessment and management; energy transition by design; contemporary threats of power energy systems; technological aspects of energy security
(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)
Recent Advances in Biomass Energy Utilization and Conversion
edited by
submission deadline 30 Jun 2026 | Viewed by 397 | Submission Open
Keywords: biomass; waste; upgrading; variable renewable sources; bioenergy; biohydrogen; biofuels; sustainable aviation fuels; process integration
(This special issue belongs to the Section A4: Bio-Energy)
Waste-to-Energy Biorefinery Technologies
edited by Sonil Nanda, and
submission deadline 30 Jun 2026 | Viewed by 240 | Submission Open
Keywords: biomass; waste valorization; biofuel; thermochemical conversion; biological conversion; mechanical conversion; waste-to-energy; biorefinery; process intensification and optimization; lifecycle analysis; techno-economic analysis
(This special issue belongs to the Section A4: Bio-Energy)
Operation and Planning of Distribution Systems Under High Renewable Penetration
edited by , Chao Deng, , Chengfu Wang, Haijun Liao and Bo Wang
submission deadline 30 Jun 2026 | 1 articles | Viewed by 139 | Submission Open
Keywords: distribution systems; renewable energy integration; transactive energy; distributed operation; voltage and frequency regulation; system resilience; multi-energy coordination
(This special issue belongs to the Section F2: Distributed Energy System)
Progress and Prospects in Thermal Energy Storage Systems
edited by and Ahmed Elgafy
submission deadline 30 Jun 2026 | Viewed by 45 | Submission Open
Keywords: heat storage; PCM; heat transfer enhancement; porous media for heat storage; fluid flow; enhancing cycling charge/discharge heat capacity and dynamic; topology; high-conductivity foam; pumped thermal electricity storage
(This special issue belongs to the Section J: Thermal Management)
Comprehensive Design and Optimization of Electrode Materials for Lithium- and Sodium-Ion Energy Storage Systems
edited by , Jun Wang and Ziwei Chen
submission deadline 3 Jul 2026 | Viewed by 264 | Submission Open
Keywords: lithium-/sodium-ion batteries; cathode materials; structural regulation; electrochemical performance; defect engineering; advanced characterization techniques
(This special issue belongs to the Section D2: Electrochem: Batteries, Fuel Cells, Capacitors)
Exploring Renewable Energy: Innovations in Wind and Tidal Energy Turbines submission deadline 10 Jul 2026 | 1 articles | Viewed by 1474 | Submission Open
Keywords: wind energy; offshore wind energy; ocean energy; tidal turbines; hydrokinetic turbines; river hydrokinetic
(This special issue belongs to the Section A3: Wind, Wave and Tidal Energy)
Optimization Design of Electromagnetic Mechanism
edited by and Koichi Matsuda
submission deadline 12 Jul 2026 | Viewed by 973 | Submission Open
Keywords: electric machine; linear motor; planar motor; electromagnetic mechanism design; electromagnetic mechanism optimization
(This special issue belongs to the Section F: Electrical Engineering)
Designing for Both Efficiency and Resilience: Harmonizing Energy, Comfort, and Climate Adaptation
edited by Ahmed Saleem and Essam Abo-Zahhad
submission deadline 20 Jul 2026 | 4 articles | Viewed by 4579 | Submission Open
Keywords: thermal resilience; building Performance Simulation (BPS); passive and active thermal strategies; overheating risk mitigation; thermal energy storage; urban heat island (UHI) adaptation; climate-responsive building design
(This special issue belongs to the Section B: Energy and Environment)
Unconventional Energy Exploration Technology
edited by Dongyu Wu
submission deadline 20 Jul 2026 | 1 articles | Viewed by 1022 | 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)
Energy Storage Devices: New Advances in Material Design and Electrochemical Performance of Supercapacitors
edited by Niraj Kumar
submission deadline 20 Jul 2026 | Viewed by 253 | Submission Open
Keywords: supercapacitors; energy storage materials; electrochemical performance; sustainable energy solutions; advanced nanostructures
(This special issue belongs to the Section D: Energy Storage and Application)
Research on Offshore Wind Turbines
edited by , Takeshi Ishihara and
submission deadline 20 Jul 2026 | Viewed by 127 | Submission Open
Keywords: wind turbines; standard and new topologies; new applications; modeling; design; control; optimization; fault diagnosis; fault tolerance
(This special issue belongs to the Section A3: Wind, Wave and Tidal Energy)
New Journey of Energy and Electric Vehicle Revolutions-Infinities Possibilities in the Science World: In Honor of Prof. Dr. C.C. Chan’s 90th Birthday
edited by , Fred Eastham, , Kwok Tong Chau, , Zhengming Zhao, and
submission deadline 31 Jul 2026 | 6 articles | Viewed by 14775 | Submission Open
Keywords: artificial intelligence engine; battery; battery charging; direct torque control; electric drives; electric vehicles; electrical machines; field oriented control; induction machines; information technology; integration of energy; intelligent connected vehicles; micro grid; model reference control; modern control theory; optimization; permanent magnet; permanent magnet machines; powertrains; renewable energy; sensorless control; smart energy; switched reluctance machines; synchronous machines; traction control; transportation and humanity; vector control
(This special issue belongs to the Section E: Electric Vehicles)
Advances in Thermal Analysis of Electrical Equipment and Power Electronics submission deadline 31 Jul 2026 | 2 articles | Viewed by 8491 | Submission Open
Keywords: power electronic devices thermal characteristics; thermal analysis of static and rotating machines; transformers thermal based fault diagnosis methods; thermal performance of energy storage technologies; hydrogen fuel cells thermal behavior; thermal characterization of renewable energy systems; thermal efficiency of industrial heating process
(This special issue belongs to the Section F3: Power Electronics)
Emerging Trends in Enhancing Power Grid Performance submission deadline 31 Jul 2026 | 2 articles | Viewed by 3378 | Submission Open
Keywords: aging power infrastructure; power grid climate-related challenges; challenges to energy transition; emerging trends in grid digitalization; advanced diagnostic; monitoring; and protection technologies; new or advanced insulating materials
(This special issue belongs to the Section A1: Smart Grids and Microgrids)
Development and Modeling of Energy Storage Systems for Future Power Grids
edited by and Lorenzo Trombetti
submission deadline 31 Jul 2026 | 3 articles | Viewed by 2241 | Submission Open
Keywords: energy storage systems; renewables; grid services; power and energy management; control strategies; electric vehicles; microgrids
(This special issue belongs to the Section D: Energy Storage and Application)
Advances in Novel Fuels—Production, Combustion, and Application: 2nd Edition submission deadline 31 Jul 2026 | Viewed by 210 | Submission Open
Keywords: synthetic sustainable fuels including e-fuels and biofuels; aviation fuels; maritime fuels; fuels for road transport; sustainable energy for power generation; production; market launch; regulations; certification and specification; techno-economic analysis; life-cycle analysis (LCA); computational fluid dynamics (CFD); combustion; engine; gas turbine; generic experiments; reduction in pollutants; emissions and their impact on the environment (e.g.; global warming potential— GWP non-CO2-effects and human health); chemical kinetic modeling; generation of detailed and reduced reaction models; machine learning; artificial intelligence
(This special issue belongs to the Section I1: Fuel)
Smart Grid, Integration of Renewable Sources and Improvement of Power Quality
edited by Haiwen Chen, and Xuan Wang
submission deadline 31 Jul 2026 | Viewed by 89 | Submission Open
Keywords: smart grid; renewable energy integration; power quality; microgrid; energy storage system; electric vehicle; demand-side management
(This special issue belongs to the Section A1: Smart Grids and Microgrids)
Hydrogen Production: Technical-Economic, Upscaling, and Industrialization Perspectives for Sustainable and Secure Energy Production
edited by
submission deadline 5 Aug 2026 | 1 articles | Viewed by 3509 | Submission Open
Keywords: hydrogen production; green hydrogen; renewable-powered electrolysis; steam methane reforming (SMR) with CCUS; methane pyrolysis; artificial intelligence (AI); machine learning (ML); process optimization; predictive analytics and maintenance in hydrogen production; hydrogen production optimization and life cycle assessments; sustainable energy transition; carbon capture; utilization; and storage; carbon management and decarbonization; infrastructure development enabling hydrogen production; techno-economic analysis; industrial scale hydrogen production; upscaling challenges; industrialization
(This special issue belongs to the Section A5: Hydrogen Energy)
Dynamic Harmony: Balancing Energy Efficiency and Thermal Comfort
edited by Sally Shahzad and
submission deadline 5 Aug 2026 | Viewed by 550 | Submission Open
Keywords: adaptive thermal comfort; behavioral studies; extreme conditions; personal comfort systems; policy and regulation; building design; retrofitting; smart technologies; renewable energy integration; innovative HVAC systems
(This special issue belongs to the Section B: Energy and Environment)
Investigation on the Kinetics of Gas Hydrates
edited by Xiaoya Zang
submission deadline 5 Aug 2026 | Viewed by 69 | Submission Open
Keywords: natural gas hydrate; formation kinetics; energy; carbon capture; sequestration
(This special issue belongs to the Section H: Geo-Energy)
Advanced Control and Operation of Distributed Energy Resources in Modern Power Systems
edited by and
submission deadline 7 Aug 2026 | 2 articles | Viewed by 1012 | Submission Open
Keywords: distributed energy resources; power distribution systems; integration of renewable energy resources; power system stability; flexibility; sector coupling; advanced distribution management systems (ADMS); distributed energy resource management systems (DERMS); non-wires alternatives (NWA); microgrids; virtual power plants; demand response; distribution system operator (DSO); TSO– DSO cooperation
(This special issue belongs to the Section A1: Smart Grids and Microgrids)
Drive System and Control Strategy of Electric Vehicle submission deadline 10 Aug 2026 | 7 articles | Viewed by 3786 | Submission Open
Keywords: electromobility; electrical machines; electrical drives; control strategies for electrical drives; vibration control; battery control
(This special issue belongs to the Section E: Electric Vehicles)
Sustainable Approaches to Energy and Environment Economics submission deadline 15 Aug 2026 | 4 articles | Viewed by 9378 | Submission Open
Keywords: energy economic; energy; economic crisis; energy transition; innovation; climate change; carbon emissions
(This special issue belongs to the Section C: Energy Economics and Policy)
Advanced Control Methods for Power Electronics, Energy Storage, Photovoltaics, and Microgrids
edited by and Mariem Dardouri
submission deadline 15 Aug 2026 | Viewed by 199 | Submission Open
Keywords: power electronics-based systems; energy storage systems; photovoltaic energy; advancements in semiconductors; high-efficiency power electronics system topologies; advanced control techniques; fault detection and fault tolerance; reliability of power electronics systems
(This special issue belongs to the Section F3: Power Electronics)
Research and Application of Building Thermal Insulation Materials submission deadline 25 Aug 2026 | 2 articles | Viewed by 1092 | Submission Open
Keywords: thermal insulation materials; thermal conductivity/thermal conductivity measurements; thermal transmittance (U); energy efficiency of buildings; physical property analysis; material property research; research methods; laboratory tests; material structure analysis; material durability; moisture resistance; fire resistance; innovative insulation technologies; nanomaterials in insulation; energy-efficient construction; passive construction; thermal modernization; sustainable construction; ecological building materials; recycling and reuse of materials; green technologies; energy policy; global energy trends; innovations in insulation materials; development of insulation technologies; computer modeling of thermal processes; numerical simulations (e.g.; CFD; FEM); life cycle analysis (LCA) of materials; research on the durability and aging of materials; experimental measurement techniques; optimization of production processes; standardization and technical standards; effectiveness of practical applications; validation and comparison of research results
(This special issue belongs to the Section G: Energy and Buildings)
Cyber Security in Microgrids and Smart Grids—2nd Edition submission deadline 25 Aug 2026 | 1 articles | Viewed by 804 | Submission Open
Keywords: cybersecurity; microgrids; smart grids; cyberattack detection; distributed energy resources (DERs); grid resilience
(This special issue belongs to the Section A1: Smart Grids and Microgrids)
New Advances in Renewable Energy and Sustainable Energy Storage Systems—2nd Edition submission deadline 25 Aug 2026 | Viewed by 10 | Submission Open
Keywords: renewable energy; sustainable energy; energy storage; power generation integrating renewable energy sources (such as solar and wind)
(This special issue belongs to the Section A: Sustainable Energy)
Advances in Indoor Environmental Quality and Energy Efficiency in Buildings submission deadline 31 Aug 2026 | 1 articles | Viewed by 2224 | Submission Open
Keywords: indoor environmental quality; energy efficiency; building resilience; healthy buildings; sustainability; human comfort
(This special issue belongs to the Section G: Energy and Buildings)
Linear and Nonlinear Electric Circuits: Theoretical Analysis and Applications: 3rd Edition submission deadline 31 Aug 2026 | Viewed by 261 | 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)
Research on Conversion Technology for Biofuel Production
edited by Wenke Zhao and Weijing Ding
submission deadline 10 Sep 2026 | Viewed by 186 | Submission Open
Keywords: energy; biomass; conversion technology; bio-fuel production; mechanisms
(This special issue belongs to the Section A4: Bio-Energy)
Condition Monitoring and Life Prediction of Lithium-Ion Batteries
edited by Panagiotis Eleftheriadis
submission deadline 10 Sep 2026 | Viewed by 42 | Submission Open
Keywords: lithium-ion batteries; state of health (SOH); remaining useful life (RUL); condition monitoring; data-driven diagnostics
(This special issue belongs to the Section D2: Electrochem: Batteries, Fuel Cells, Capacitors)
Smart Grid Integration of Renewable Energy Sources
edited by Musa Yilmaz
submission deadline 15 Sep 2026 | Viewed by 138 | Submission Open
Keywords: smart grid integration; renewable energy sources; photovoltaic systems; wind power; energy storage; grid stability; load frequency control; artificial intelligence; power electronics; demand response
(This special issue belongs to the Section A: Sustainable Energy)
Sustainable Development of Nanomaterials for Advanced Energy Fuels and Environmental Protection submission deadline 30 Sep 2026 | 2 articles | Viewed by 3105 | Submission Open
Keywords: environmental catalysis; nanomaterials synthesis and application; power to gas; energy storage; hydrogen energy; CO2 methanation; NOx reduction; biomass conversion; fuel additives; biofuels in automotive industry
(This special issue belongs to the Section D1: Advanced Energy Materials)
Batteries and Energy Storage Systems: Towards a Sustainable Energy Future submission deadline 30 Sep 2026 | 1 articles | Viewed by 1017 | Submission Open
Keywords: battery management systems; energy storage systems; battery thermal management; hydrogen-based storage systems; smart grid; renewable energy sources; structural batteries
(This special issue belongs to the Section E: Electric Vehicles)
Selected Papers from the RH2EDIN_2025: Renewables for Industrial Defossilization
edited by José M. Abelleira-Pereira, Francisco Trujillo and María de la Luz Martín Martín
submission deadline 30 Sep 2026 | Viewed by 222 | Submission Open
Keywords: emerging renewables; renewable H2 production; renewable H2 valleys and corridors; advances in H2 storage; power-to-X
Recent Developments in the Production of Biodiesel
edited by Pawel Mierczynski
submission deadline 5 Oct 2026 | Viewed by 147 | Submission Open
Keywords: biodiesel production; heterogeneous catalysts; kinetics; nanocatalysts; biodiesel processing; bimetallic catalysts; reaction mechanism studies; surface studies of the catalytic materials; utilization of glycerol; glycerol utilization; homogenous catalysts
(This special issue belongs to the Section A4: Bio-Energy)
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