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10th Anniversary of the Energy Science and Technology Section—the Future...
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10th Anniversary of the Energy Science and Technology Section—the Future of Energy

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Energy Science and Technology".

Deadline for manuscript submissions: 31 December 2026 | Viewed by 982

Special Issue Editors

Prof. Dr. Rodolfo Dufo-López

E-Mail Website
Guest Editor
Department of Electrical Engineering, University of Zaragoza, Calle María de Luna, 3, 50018 Zaragoza, Spain
Interests: renewable energy; electrical power systems; energy storage; batteries; pumped hydro storage; hydrogen
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jesús Sergio Artal-Sevil

E-Mail Website
Guest Editor
Department of Electrical Engineering, University of Zaragoza, 50018 Zaragoza, Spain
Interests: power electronics; resonant and soft-switched power converters; modeling and control of converters; design and simulation of electrical machines for vehicle traction; solid-state transformers; FACTS; power conversion applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

The global energy landscape is undergoing a paradigm shift driven by the urgent need for decarbonization and the rapid evolution of disruptive technologies. As we celebrate the 10th anniversary of the Energy Science and Technology Section, this Special Issue serves as both a retrospective of a decade of innovation and a roadmap for the future.

This anniversary Special Issue, "The Future of Energy," serves as a visionary platform to explore the next generation of energy systems. We invite researchers to submit original papers and comprehensive reviews that address how we will produce, store, and consume energy in the coming decades. The goal is to highlight the transition from traditional fossil-fuel dependency to a diversified, resilient, and sustainable global energy matrix.

Prof. Dr. Rodolfo Dufo-López
Prof. Dr. Jesús Sergio Artal-Sevil
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Applied Sciences is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • energy efficiency
  • renewable energy generation
  • emerging energy technologies
  • energy storage (batteries, pumped hydro storage, hydrogen, thermal storage, CAES…)
  • decarbonizing industrial processes
  • biofuels
  • hydrogen economy
  • advanced heating and cooling solutions
  • evolution of electric mobility
  • power-to-X
  • low-carbon technologies in energy systems
  • energy harvesting
  • grid integration and ancillary services
  • off-grid energy systems
  • analysis, simulation and optimization of energy systems
  • power electronics for energy systems
  • energy management
  • energy optimization
  • carbon capture, utilization, and storage

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Published Papers (1 paper)

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Research

25 pages, 2423 KB  
Article
Solar-to-Hydrogen Production Potential Across Romania’s Hydrogen Ecosystems: Integrated PV-Electrolysis Modelling and Techno-Environmental Assessment
by Raluca-Andreea Felseghi, Claudiu Ioan Oprea, Paula Veronica Ungureșan, Mihaela Ionela Bian and Ligia Mihaela Moga
Appl. Sci. 2026, 16(6), 3110; https://doi.org/10.3390/app16063110 - 23 Mar 2026
Viewed by 542
Abstract
This study develops and applies an integrated modeling framework to assess the solar-to-hydrogen-to-power potential across Romania’s five hydrogen ecosystems defined in the National Hydrogen Strategy. The methodology couples PVGIS-based photovoltaic yield simulations, based on hourly solar irradiation data and including system losses, with [...] Read more.
This study develops and applies an integrated modeling framework to assess the solar-to-hydrogen-to-power potential across Romania’s five hydrogen ecosystems defined in the National Hydrogen Strategy. The methodology couples PVGIS-based photovoltaic yield simulations, based on hourly solar irradiation data and including system losses, with MHOGA-based electrolysis simulation, enabling a quantitative-energetic-environmental (Q-E-E) system-level assessment. A 1 MW photovoltaic plant was simulated under three mounting configurations (15° fixed tilt, optimal tilt, and solar tracking) and interfaced with alkaline (AEL) and proton exchange membrane electrolysers (PEMEL). Specific photovoltaic yields reach up to 360 kWh/m2PV·year under tracking conditions, producing up to 7.5 kg/m2PV·year (AEL) and 6.8 kg/m2PV·year (PEMEL), expressed per unit of photovoltaic surface area to enable consistent comparison across the configurations considered. The modeled round-trip efficiency of the full solar–electricity–hydrogen–electricity chain is 38.32% for AEL and 34.57% for PEMEL. Life-cycle-based emission modeling yields 0.92 kg CO2/kg H2 (AEL) and 1.03 kg CO2/kg H2 (PEMEL), while avoided emissions exceed 250 g CO2/kWh relative to grid intensity. Land-use modeling indicates area requirements between 9402 and 18,804 m2/MW, depending on the Ground Coverage Ratio. Results demonstrate that system configuration exerts a stronger influence than regional solar variability in determining hydrogen yield, highlighting the need for integrated techno-environmental optimization for large-scale deployment. Full article
(This article belongs to the Special Issue 10th Anniversary of the Energy Science and Technology Section—the Future of Energy)
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