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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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Advanced Control, Optimization, Stability and Reliability of Microgrids and Power Systems

edited by

Muhammad Akmal

submission deadline 25 Aug 2025 | 9 articles | Viewed by 10653 | Submission Open

Keywords: microgrids; power systems; control of microgrids; optimization in microgrids; stability of microgrids; reliability of microgrids and power systems; integrating renewable energy sources

(This special issue belongs to the Section A1: Smart Grids and Microgrids)

Wave Energy: Theory, Methods, and Applications

edited by

Umesh A. Korde

and

Michael E. McCormick

submission deadline 25 Aug 2025 | 6 articles | Viewed by 10106 | Submission Open

Keywords: wave energy; energy conversion principles; hydrodynamics; theory; applications; at-sea testing

(This special issue belongs to the Section A3: Wind, Wave and Tidal Energy)

Forecasting and Optimization in Transport Energy Management Systems

edited by

, Sergey Goolak,

and

submission deadline 25 Aug 2025 | 4 articles | Viewed by 9513 | Submission Open

(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)

Optimal Control of Wind and Wave Energy Converters

edited by

Cristian Paul Chioncel

and

Gelu Ovidiu Tirian

submission deadline 25 Aug 2025 | 7 articles | Viewed by 9399 | Submission Open

Keywords: operation at maximum power point (MPP); electric generators; wave energy converters; transmission and distribution grid; smart grid; wind measurement techniques; onshore and offshore wind turbines; operational monitoring; error diagnosis of wind turbine parts

(This special issue belongs to the Section A3: Wind, Wave and Tidal Energy)

Power Quality and Hosting Capacity in the Microgrids

edited by

Wajiha Shireen

submission deadline 25 Aug 2025 | 7 articles | Viewed by 9155 | Submission Open

Keywords: integration of DERs; energy storage; harmonic distortion; frequency deviation; voltage unbalance; microgrid control and protection

(This special issue belongs to the Section A1: Smart Grids and Microgrids)

Progress and Challenges in Solar Photovoltaic Materials and Intelligent Control

edited by

Mingxuan Mao

submission deadline 25 Aug 2025 | 3 articles | Viewed by 7897 | Submission Open

Keywords: solar PV materials; artificial intelligence for solar energy systems; renewable energy; impacts of Solar PV on power systems; dynamical modeling and simulation; control of Solar PV arrays; economic dispatch; power quality enhancement; new concept of "PV+"

(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)

Advances in Machine Learning Applications in Modern Energy Systems: 2nd Edition

edited by

Daniel Pérez-López

and

Fernando Sánchez Lasheras

submission deadline 25 Aug 2025 | 5 articles | Viewed by 7541 | Submission Open

Keywords: machine learning; energy systems; applications; modeling

(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)

Engine Combustion Characteristics, Performance, and Emission

edited by Bo Yang

submission deadline 25 Aug 2025 | 5 articles | Viewed by 6979 | Submission Open

Keywords: engine combustion; emission control; internal combustion engine; combustion characteristics

(This special issue belongs to the Section I2: Energy and Combustion Science)

Energizing the Future: Interplay of Technology, Economics, and Policy for Transitioning to Electric Vehicles

edited by Michael CW Kintner-Meyer

submission deadline 25 Aug 2025 | 3 articles | Viewed by 6163 | Submission Open

Keywords: clean transportation; electric vehicles; technology barrier; institutional barrier; regulatory barrier; human behavior; market inertia; policy; policy design; electric infrastructure; charging infrastructure; planning processes; acceleration of market adoption; decarbonization strategies; electric rates for EVs

(This special issue belongs to the Section E: Electric Vehicles)

Gas Hydrates: A Future Clean Energy Resource

edited by

Alberto Maria Gambelli

and Yan Li

submission deadline 25 Aug 2025 | 3 articles | Viewed by 6062 | Submission Open

Keywords: natural gas hydrates; energy production; CO2 final disposal; replacement processes

(This special issue belongs to the Section B2: Clean Energy)

Tiny Machine Learning for Energy Applications

edited by Riccardo Berta,

Luca Lazzaroni

and

Matteo Nardello

submission deadline 25 Aug 2025 | 5 articles | Viewed by 5841 | Submission Open

Keywords: tiny machine learning (TinyML); energy management; sustainable energy; edge computing; edge intelligence; edge applications; energy forecasting; energy-harvesting technologies; batteryless technologies; smart grid technologies

(This special issue belongs to the Section F5: Artificial Intelligence and Smart Energy)

Advanced Technologies for Electrified Transportation and Robotics

edited by

Rundong Huang

, Yuxin Liu, Zhiping Dong and

Chunhua Liu

submission deadline 25 Aug 2025 | 7 articles | Viewed by 4773 | Submission Open

Keywords: electrified transportation; robotic; electric propulsion system; charging system; electrical power converter

(This special issue belongs to the Section E: Electric Vehicles)

Advances in the Development of Electricity and Carbon Markets: Challenges and Opportunities

edited by Jing Qiu

submission deadline 25 Aug 2025 | 6 articles | Viewed by 4709 | Submission Open

Keywords: electricity markets; carbon markets; sustainability; market integration; resilience and flexibility

(This special issue belongs to the Section C: Energy Economics and Policy)

Electrical Machine Systems with High Efficiency, Reliability and Integration

edited by Tao Wang, Chenwen Cheng and Yang Xiao

submission deadline 25 Aug 2025 | 5 articles | Viewed by 3900 | Submission Open

Keywords: multi-phase electrical machines and drives; fault diagnosis and fault-tolerant control of electrical machines and converters; advanced linear motors and drives; high speed electrical machines and drives; non- or less permanent magnet machines (switched reluctance machine; hybrid excited machine; etc.); sensorless control of electrical machines; high-power density motors and converters; motor and drive integrated system; loss modeling and high efficiency design of electrical machines and converters; high reliability topology; structure; and assembly of electrical machines; multi-physics design of electrical machines; artificial-intelligence-assisted design of electrical machines and drives

(This special issue belongs to the Section F: Electrical Engineering)

Challenges and Future Trends of Energy Management Systems for Electric Vehicles

edited by Handong Li

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3825 | Submission Open

Keywords: energy management systems (EMSs); electric vehicles (EVs); energy optimization; thermal management; real-time control; predictive energy management; EMS cybersecurity; V2G and V2X systems; safety and reliability; hybrid and plug-in hybrid vehicles

(This special issue belongs to the Section E: Electric Vehicles)

Advances in Gas Transportation by Pipeline and LNG

edited by

Xiaoben Liu

and Hao Wang

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3655 | Submission Open

Keywords: pipeline; LNG; new energy storage and transportation; low carbon

(This special issue belongs to the Section H: Geo-Energy)

Simulation and Analysis of Electrical Power Systems

edited by

Qingyu Wang

submission deadline 25 Aug 2025 | 6 articles | Viewed by 3509 | Submission Open

Keywords: electrical power systems; simulation modelling; fault analysis; high-voltage power equipment

(This special issue belongs to the Section F1: Electrical Power System)

Environmentally Friendly Biofuel Production: 2nd Edition

edited by

Wojciech Czekała

and

Jakub Frankowski

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3475 | Submission Open

Keywords: bioprocess engineering; biomass; biofuels; biogas; agriculture; renewable energy; waste management; bioeconomy; circular economy; sustainable development

(This special issue belongs to the Section A4: Bio-Energy)

Advanced Building Materials for Energy Saving—2nd Edition

edited by

Przemysław Brzyski

submission deadline 25 Aug 2025 | 3 articles | Viewed by 3436 | Submission Open

(This special issue belongs to the Section G: Energy and Buildings)

Photovoltaic-Thermal (PVT) and Concentrated Photovoltaic-Thermal (CPVT) Solar Collectors

edited by

João Gomes

Sahand Hosouli

, Iván Patricio Acosta Pazmiño and

Diogo Oliveira Cabral

submission deadline 25 Aug 2025 | 3 articles | Viewed by 2832 | Submission Open

Keywords: PVT solar collectors; CPVT solar collectors; renewable energy systems; integration of PVT and CPVT technologies; performance evaluation and optimization; economic and environmental assessments; solar energy conversion

(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)

Insulation Challenges in High-Voltage Transformers: Overcoming Barriers

edited by

Hongshun Liu

and

Haoxi Cong

submission deadline 25 Aug 2025 | 3 articles | Viewed by 2440 | Submission Open

Keywords: electrical insulation; discharge and plasma; pulsed power; high-field effects; high-voltage engineering

(This special issue belongs to the Section F6: High Voltage)

Recent Developments in Solar Thermal Energy

edited by Mariano Alarcón and Juan Luna-Abad

submission deadline 25 Aug 2025 | 2 articles | Viewed by 2419 | Submission Open

(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)

Solar Energy, Governance and CO₂ Emissions

edited by Arnold Johan Rix and

Alan Brent

submission deadline 25 Aug 2025 | 2 articles | Viewed by 2338 | Submission Open

Keywords: solar energy; governance; CO2 emissions; climate change; solar technology; electric mobility; electric vehicles; energy storage; grid integration; energy policy; environmental impact; life cycle assessment; policy frameworks

(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)

DC/DC Converters Optimized for Energy Storage in Smart Grids

edited by Chuyang Wang and Jia Liu

submission deadline 25 Aug 2025 | 1 articles | Viewed by 1962 | Submission Open

Keywords: smart grids; energy storage; DC/DC converters; control optimization

(This special issue belongs to the Section A1: Smart Grids and Microgrids)

Advances in Solar PV/Thermal, Heat Pump, and Energy Storage Integrated Technology with the Use of Nanomaterials

edited by

Nikhil Shah

and

Jayanta Deb Mondol

submission deadline 25 Aug 2025 | 2 articles | Viewed by 1888 | Submission Open

Keywords: nanomaterial; solar PV; solar thermal; PV/T; heat pump; energy storage; integration

(This special issue belongs to the Section A: Sustainable Energy)

Renewable Energy Microgrids for the Future of Electrical Grid—2nd Edition

edited by

Ghjuvan Antone Faggianelli

and Christian Cristofari

submission deadline 25 Aug 2025 | 3 articles | Viewed by 1812 | Submission Open

Keywords: microgrids; renewable energy; energy storage; energy management

(This special issue belongs to the Section A1: Smart Grids and Microgrids)

New Research in Advanced Combustion Technologies for Low-Carbon Emissions

edited by Qiongyao Qin

submission deadline 25 Aug 2025 | 2 articles | Viewed by 1804 | Submission Open

Keywords: new technologies; combustion; flow control; theory; numerical methods; experiments

(This special issue belongs to the Section I2: Energy and Combustion Science)

Application of Swarm Intelligence for Multi-Energy Virtual Power Plants

edited by

Yang Gao

, Xiao Hu and

Sheng Chen

submission deadline 25 Aug 2025 | 5 articles | Viewed by 1717 | Submission Open

Keywords: virtual power plant; swarm intelligence; energy management; operation control; digital twin

(This special issue belongs to the Section A1: Smart Grids and Microgrids)

Advances in Bio-Energy: Biofuel and Other Value-Added Bioproducts, Production Technology, and Environmental Impact Systems Components

edited by

Carlos Saul Osorio-González

and

Antonio Avalos Ramirez

submission deadline 25 Aug 2025 | 3 articles | Viewed by 1353 | Submission Open

Keywords: residual biomasses; bioenergy; sustainable conversion; biogas; biohydrogen; bioethanol; biodiesel; bio-oil; value addition; green chemistry; circular economy; environmental impact; social impact

(This special issue belongs to the Section A4: Bio-Energy)

Materials for CO₂ Capture and Conversion

edited by Rui Han, Changlei Qin and Bo Jin

submission deadline 25 Aug 2025 | 2 articles | Viewed by 1320 | Submission Open

Keywords: CO2 capture; CO2 conversion; bifunctional materials; chemical looping; absorbent; adsorbent

(This special issue belongs to the Section B3: Carbon Emission and Utilization)

Advances in Supercritical Carbon Dioxide Cycle

edited by

Xiang Qin

, Xu Peng and

Jiaheng Chen

submission deadline 25 Aug 2025 | 3 articles | Viewed by 1242 | Submission Open

Keywords: supercritical CO2 cycles; thermodynamic efficiency; system integration; control strategy; energy conversion

(This special issue belongs to the Section J: Thermal Management)

Advanced Developments of Photovoltaic Devices and Perovskite Solar Cells: 2nd Edition

edited by

Jingjing Dong

and

Zhenjun Fan

submission deadline 25 Aug 2025 | 2 articles | Viewed by 1161 | Submission Open

Keywords: perovskite; solar cells; PCE; crystal quality; stability

(This special issue belongs to the Section A2: Solar Energy and Photovoltaic Systems)

Recent Advances and New Challenges in Solar–Wind Hybrid Energy Systems

edited by

Adrian Ilinca

submission deadline 25 Aug 2025 | 1 articles | Viewed by 1099 | Submission Open

Keywords: solar– wind hybrid systems; renewable energy integration; energy storage; grid integration; optimization; modeling and simulation; energy management; case studies; smart grid; microgrid; hybrid energy generation; energy transition

(This special issue belongs to the Section A: Sustainable Energy)

New Fuels and Advanced Combustion Modes for Innovative Internal Combustion Engines: 2nd Edition

edited by

Enzo Galloni

and

Davide Lanni

submission deadline 25 Aug 2025 | 1 articles | Viewed by 662 | Submission Open

Keywords: internal combustion engines; carbon-free fuels; e-fuels; biofuels; advanced combustion modes; fuel injection systems; well-to-wheel; life cycle assessment

(This special issue belongs to the Section I2: Energy and Combustion Science)

Adaptive Optimal Control Strategy for Plug-In Hybrid Electric Vehicles

edited by

Pierpaolo Polverino

submission deadline 25 Aug 2025 | 1 articles | Viewed by 605 | Submission Open

Keywords: plug-in hybrid electric vehicles; fuel cells; energy management strategies; automotive system identification and modeling; optimal control; optimal design; battery management strategies; sustainable mobility; ADAS; V2X

(This special issue belongs to the Section E: Electric Vehicles)

New Advances in Material, Performance and Design of Solar Cells

edited by

Elisabetta Achilli

and

Mario V. Imperatore

submission deadline 25 Aug 2025 | 1 articles | Viewed by 589 | Submission Open

Keywords: solar cells; synthesis; materials; post processing; simulations; characterization; application

(This special issue belongs to the Section D2: Electrochem: Batteries, Fuel Cells, Capacitors)

Challenges and Promises on the Gas Hydrate Development and Production as a New Energy Resource

edited by

Dongliang Li

and Shicai Sun

submission deadline 25 Aug 2025 | Viewed by 562 | Submission Open

Keywords: natural gas hydrate; gas extraction; reservoir stimulation; safety evaluation

(This special issue belongs to the Section H: Geo-Energy)

Advanced Heating and Cooling Technologies for Sustainable Buildings

edited by

Tryfon C. Roumpedakis

submission deadline 25 Aug 2025 | 1 articles | Viewed by 545 | Submission Open

Keywords: heating; cooling; building sector; decarbonization; novel heat pumps

(This special issue belongs to the Section G: Energy and Buildings)

Advanced Energy Materials: Innovations and Challenges

edited by

Jelena Tamuliene

and

Jonas Sarlauskas

submission deadline 25 Aug 2025 | 1 articles | Viewed by 544 | Submission Open

Keywords: high-energy materials; synthesis; theoretical approach; maintenance.

(This special issue belongs to the Section D1: Advanced Energy Materials)

Challenges, Trends and Achievements in Electric Vehicle Research

edited by

Ka Wai Eric Cheng

submission deadline 25 Aug 2025 | Viewed by 452 | Submission Open

Keywords: electric vehicle technology; battery energy storage; supercapacitor; second life batteries; in-wheel motor; motor and drives; power train; charger; wireless power transfer; ultrafast charging system; active suspension; vehicle to grid; hydrogen-powered vehicle; ammonia-powered vehicle; fuel cell; four-wheel drive; steering system; braking system; flying vehicle; solar vehicles; autonomous vehicle; amphibious vehicle; vehicle policy; vehicle infrastructure; smart city

(This special issue belongs to the Section E: Electric Vehicles)

Fuel Cells for Sustainable Transportation

edited by Wenjia Du, Jia Di (Ed) Yang and Juntao Li

submission deadline 25 Aug 2025 | Viewed by 427 | Submission Open

Keywords: fuel cells; PEMFC; automotive; transport; sustainable transport; hybrid vehicles; vehicle powertrain; fuel cell X-ray CT; scanning electron microscope (SEM); drive cycles; energy management systems; fuel cell modelling; FCHEV modelling; FCHEV sizing; energy

(This special issue belongs to the Section D: Energy Storage and Application)

Water–Food–Energy Nexus for a Sustainable Use and Management of Natural Resources, Byproducts and Wastes in Agri-Food Systems, 2nd Edition

edited by

Wei Liao

Attilio Toscano

and

Francesca Valenti

submission deadline 25 Aug 2025 | Viewed by 423 | Submission Open

Keywords: integrated waste management; farm-based WFE solutions; energy and water efficiency in organic waste management; efficient and low-energy water/wastewater treatment technologies; WFE nexus databases and datasets; WFE nexus tools for the agricultural; industrial; and energy sectors; WFE nexus in urban areas; WFE nexus policies; carbon neutrality and WFE; case studies of the nexus approach; GIS application

(This special issue belongs to the Section A4: Bio-Energy)

Dynamic Harmony: Balancing Energy Efficiency and Thermal Comfort

edited by Sally Shahzad and

Hom Bahadur Rijal

submission deadline 25 Aug 2025 | Viewed by 419 | 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)

Financial Development and Energy Consumption Nexus—Third Edition

edited by

Yuriy Bilan

submission deadline 25 Aug 2025 | 1 articles | Viewed by 418 | Submission Open

Keywords: financing of sustainable energy sector development; responsible financing of energy sector; financing of renewables; financing of energy transition; risks; returns; and investment across energy sectors; climate change mitigation and energy investments; financial measures to promote renewables and energy efficiency; financial measures to promote energy security; financial measures to promote energy affordability; modelling and forecasting of energy consumption

(This special issue belongs to the Section C: Energy Economics and Policy)

Technology for Analysis and Control of Power Quality

edited by Wenxi Hu

submission deadline 25 Aug 2025 | 1 articles | Viewed by 384 | Submission Open

Keywords: power quality; harmonics; voltage fluctuations; voltage sags; data analytics; control strategy

(This special issue belongs to the Section F1: Electrical Power System)

Impedance Spectroscopy-Based Analysis of Electrical Storage Systems

edited by

Daniela Chrenko

and

Elodie Pahon

submission deadline 25 Aug 2025 | Viewed by 342 | Submission Open

Keywords: impedance spectroscopy; electrical storage systems; battery health status; fuel cell stack; battery modules

(This special issue belongs to the Section D: Energy Storage and Application)

Advanced Structural Health Monitoring for Energy Performance and Safety in Marine Renewable Systems

edited by Mingqiang Xu,

Hongchao Lu

and

Haojie Ren

submission deadline 25 Aug 2025 | Viewed by 320 | Submission Open

Keywords: structural health monitoring; marine structure; renewable energy system; dynamic response analysis; damage detection; safety assessment; system identification; machine learning; energy performance monitoring; condition-based maintenance; digital twin; lifetime energy output; offshore operation optimization

(This special issue belongs to the Section A: Sustainable Energy)

Power Electronics for Renewable Energy Systems and Energy Conversion

edited by

Wajiha Shireen

and

Preetham Goli

submission deadline 25 Aug 2025 | Viewed by 267 | Submission Open

Keywords: microgrids; power converters; energy management; optimization; resiliency; service restoration

(This special issue belongs to the Section F3: Power Electronics)

Renewable Energy Systems for Energy Communities, 2nd Edition

edited by

Alessandro Burgio

submission deadline 25 Aug 2025 | Viewed by 263 | Submission Open

Keywords: energy communities; energy policies; energy markets; energy economics; electricity markets; innovative models and technologies; ancillary services; best practices; business models; consumer engagement; flexsumers

(This special issue belongs to the Section C: Energy Economics and Policy)

New Insights into Microgrids and Renewable Energy Systems—2nd Edition

edited by

Salvatore Favuzza

and