Energies

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 polices 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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Advances on Thermal Analysis of Electrical Equipment and Power Electronics

edited by

Alhussein Albarbar

and

Xiang Zhang

submission deadline 31 Jul 2025 | 2 articles | Viewed by 4356 | 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)

Advanced Battery Materials for Energy Storage

edited by

Mohd Asyadi Azam

submission deadline 31 Jul 2025 | 2 articles | Viewed by 3282 | Submission Open

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

Efficient Solar Energy Conversion and Effective Energy Storage

edited by

Mohammad Akrami

submission deadline 31 Jul 2025 | 2 articles | Viewed by 1390 | Submission Open

Keywords: solar energy conversion; photovoltaic cells; supercapacitors; hydrogen storage; renewable energy integration; energy grid optimization; sustainable energy solutions; solar thermal systems; energy storage technologies; batteries

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

Petroleum and Natural Gas Engineering

edited by Jiaxue Li and Pengfei Zhao

submission deadline 31 Jul 2025 | 2 articles | Viewed by 946 | Submission Open

Keywords: hydraulic fracturing; enhanced oil recovery (EOR); drilling technologies; reservoir management; environmental impact

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

Maintenance Management Applied to Renewable Energies

edited by

Jesús María Pinar Pérez

submission deadline 31 Jul 2025 | Viewed by 400 | Submission Open

Keywords: maintenance management; smart maintenance; renewable energy; reliability; decision support; machine learning; neural networks; optimization

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

Available Energy and Environmental Economics: Volume II

edited by

Xinlong Xu

and

Yu Chen

submission deadline 20 Aug 2025 | 4 articles | Viewed by 6505 | Submission Open

Keywords: energy economics; energy efficiency; energy risk; environment sustainable development; tourism carbon emission

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

Renewable Fuels for Internal Combustion Engines: 2nd Edition

edited by

Sławomir Wierzbicki

and

Kamil Duda

submission deadline 31 Aug 2025 | 11 articles | Viewed by 11595 | Submission Open

Keywords: alternative fuels for internal combustion engines; fuel injection modes; steady and transient operation; combustion control; combustion modeling; innovative combustion concepts; engine performance; engine thermodynamics; emission characteristics; impacts of biofuels for engine components degradation; biofuels blending; biofuel quality examination; additives for alternative fuels biofuel production techniques; biofuel feedstock diversification; economy of biofuel use

(This special issue belongs to the Section I: Energy Fundamentals and Conversion)

Hydrogen Energy Generation, Storage, Transportation and Utilization

edited by

Antoni Żywczak

submission deadline 31 Aug 2025 | 5 articles | Viewed by 5878 | Submission Open

Keywords: hydrogen generation; renewable hydrogen; hydrogen storage; novel hydrogen-based materials; fuel cell technology; hydrogen application; stationary and portable hydrogen devices; hydrogen utilization

(This special issue belongs to the Section A5: Hydrogen Energy)

Advances in Electrical Power System Quality

edited by

Marcel Nicola

Petre-Marin Nicolae

and

Dan Selisteanu

submission deadline 15 Sep 2025 | 5 articles | Viewed by 3245 | 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)

Sustainable and Low Carbon Development in the Energy Sector

edited by

Maria Dzikuć

and

Aleksander Jakimowicz

submission deadline 30 Sep 2025 | 13 articles | Viewed by 24585 | Submission Open

Keywords: renewable energy systems; energy transition; distributed generation; low-carbon development; climate change; energy internet; smart grids; environmental economics; low-carbon agriculture; energy conservation

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

Advances in Artificial Intelligence for Photovoltaic Research and Applications

edited by

Hubert Seigneur

and Kristopher Davis

submission deadline 30 Sep 2025 | 2 articles | Viewed by 1584 | Submission Open

Keywords: artificial intelligence; machine learning; photovoltaics; solar cells; solar panels; faults; anomaly; degradation. failure; time series; current– voltage curves; geospatial location; infrared images; electroluminescence images; photoluminescence images; ultraviolet fluorescence images; material characterization

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

New Trends in Electric Vehicles

edited by

Emilio Larrodé

submission deadline 30 Sep 2025 | Viewed by 251 | Submission Open

Keywords: electric vehicle performances; autonomy estimation; instant consumption; energy losses; advanced light materials; vehicle measurement sensors

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

Advances in Reservoir Simulation: 2nd Edition

edited by

Haifeng Zhao

and Yang Xia

submission deadline 30 Sep 2025 | Viewed by 151 | Submission Open

Keywords: geological modeling; mechanical model; finite element/discrete element/finite difference/energy method; fracturing or fractured reservoir simulation; engineering application

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

Innovative Approaches to Retrofitting for Sustainable Built Environments

edited by

Richard Fitton

and

William Swan

submission deadline 30 Sep 2025 | Viewed by 137 | Submission Open

Keywords: sustainable retrofitting; energy efficiency; net-zero retrofit; sustainable built environment; retrofitting at scale; retrofit regulations; retrofitting strategies; climate change mitigation

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

Development of Unconventional Oil and Gas Fields: 2nd Edition

edited by Renbao Zhao and

Xuyang Guo

submission deadline 30 Sep 2025 | Viewed by 30 | Submission Open

Keywords: heavy oil; shale oil/gas; oil shale; tar sand; thermal recovery; in situ combustion; gas hydrates

(This special issue belongs to the Section H1: Petroleum Engineering)

Advancements and Future Prospects of Heat Exchangers in Thermal and Energy Management

edited by Fabio Bozzoli and Marcelo José Colaço

submission deadline 19 Dec 2025 | Viewed by 141 | Submission Open

Keywords: heat exchangers; thermal management; efficiency; heat transfer enhancement; scale-up; optimization; heat pipes; thermal storage; designs; fouling

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

Novel Materials for Solar Cells and Photovoltaic Systems

edited by