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Energies
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New Technologies and Materials in the Energy Transformation
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New Technologies and Materials in the Energy Transformation

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "K: State-of-the-Art Energy Related Technologies".

Deadline for manuscript submissions: 5 October 2026 | Viewed by 3936

Special Issue Editors

Dr. Jacek Kusznier

E-Mail Website
Guest Editor
Faculty of Electrical Engineering, Bialystok University of Technology, 15-351 Białystok, Poland
Interests: photovoltaic; solar energy; optical radiation detection; optoelectronic sensors; smart and adaptive systems; operation of photovoltaic power systems; light sources
Special Issues, Collections and Topics in MDPI journals
Dr. Zbigniew Skibko

E-Mail Website
Guest Editor
Faculty of Electrical Engineering, Bialystok University of Technology, 15-351 Białystok, Poland
Interests: power quality; distributed energy source; renewable energy sources; power grid; energy storage; energy flexibility
Special Issues, Collections and Topics in MDPI journals
Dr. Marek Suproniuk

E-Mail Website
Guest Editor
Faculty of Electronics, Military University of Technology, 00-908 Warsaw, Poland
Interests: electrical metrology; electronic circuits; optoelectronic and photonic sensors; smart grid; power electronics; power quality

Special Issue Information

Dear Colleagues,

This Special Issue touches on disciplines related to energy generation, conversion, and management. The use of available energy resources concerns all areas of the economy and all types of activities. The energy transformation affects the electricity, heating, and transport sectors, with broader implications.

To carry out a rational transformation of the system, cooperation between electrical engineers, energy engineers, civil engineers, environmental engineers, and other specialties is necessary. In such cases, it is also necessary to use SMART and AI technologies.

Modern science and industry require cooperation between scientists from many disciplines and specialties.

The papers presented in this Special Issue should address issues related to energy transformation. Experts in the field are encouraged to share their latest findings in the form of original research papers.

Topics of interest for publication include, but are not limited to:

  • recent advances in energy transformation technologies;
  • new materials in the energy transformation;
  • energy efficiency, energy efficiency, impact of own-use equipment on electricity production;
  • renewable energy sources;
  • smart grid;
  • measurement and prediction of renewable energy sources production
  • storage systems;
  • V2G (vehicle-to-grid) technology;
  • energy policy;
  • power quality;
  • power electronic converters;
  • low-energy buildings;
  • thermal engineering;
  • refrigeration, air-conditioning, and heat pump technology;
  • thermal flow;
  • application of AI in energy modelling and management.

Dr. Jacek Kusznier
Dr. Zbigniew Skibko
Dr. Marek Suproniuk
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. Energies 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 2600 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 transformation
  • energy efficiency
  • storage systems
  • modelling, yield measurements, forecast, and predictions of energy generation and consumption
  • renewable energy sources
  • power quality
  • energy flexibility
  • smart grid
  • low-energy buildings
  • thermal engineering

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Further information on MDPI's Special Issue policies can be found here.

Related Special Issue

Published Papers (3 papers)

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Research

15 pages, 931 KB  
Article
Extended Methodology for Calculating the LENI Coefficient with a Reactive Power Component (LENIQ) in the Analysis of Energy Efficiency of Building Lighting
by Honorata Sierocka, Maciej Zajkowski and Marcin Andrzej Sulkowski
Energies 2026, 19(1), 130; https://doi.org/10.3390/en19010130 - 26 Dec 2025
Viewed by 582
Abstract
The article presents an extended methodology for calculating the LENI energy efficiency index for building lighting, taking into account an additional reactive power component—LENIQ. The proposed methodology takes into account the influence of the power factor (cos φ), the nature of [...] Read more.
The article presents an extended methodology for calculating the LENI energy efficiency index for building lighting, taking into account an additional reactive power component—LENIQ. The proposed methodology takes into account the influence of the power factor (cos φ), the nature of the receivers, and the presence of constant lighting intensity (CTE) systems. Based on the analysis of two public buildings (schools)—one without a photovoltaic installation and the other equipped with a PV system—it was shown that reactive power can be a significant component of the energy balance. For the facility without PV, a value of LENIQ = 58.4 kvarh/m2·year was obtained, while for the facility with PV—4.75 kvarh/m2·year, which indicates a more than tenfold reduction in reactive energy thanks to the use of automation and renewable energy sources. A comparison with model values for different cos φ enabled an additional assessment of the efficiency of lighting installations. The aim of this study is to develop an extended methodology of the LENI indicator by introducing a reactive power component LENIQ, enabling a comprehensive assessment of lighting energy efficiency. Full article
(This article belongs to the Special Issue New Technologies and Materials in the Energy Transformation)
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16 pages, 3415 KB  
Article
An Indicator for Assessing the Hosting Capacity of Low-Voltage Power Networks for Distributed Energy Resources
by Grzegorz Hołdyński, Zbigniew Skibko and Andrzej Firlit
Energies 2025, 18(23), 6315; https://doi.org/10.3390/en18236315 - 30 Nov 2025
Cited by 1 | Viewed by 598
Abstract
The article analyses the hosting capacity of low-voltage (LV) power grids for connecting distributed energy sources (DER), mainly photovoltaic installations (PV), considering technical limitations imposed by power system operating conditions. The main objective of the research was to develop a simple equation that [...] Read more.
The article analyses the hosting capacity of low-voltage (LV) power grids for connecting distributed energy sources (DER), mainly photovoltaic installations (PV), considering technical limitations imposed by power system operating conditions. The main objective of the research was to develop a simple equation that enables the quick estimation of the maximum power of an energy source that can be safely connected at a given point in the network without causing excessive voltage rise or overloading the transformer and line cable. The analysis was performed on the basis of relevant calculation formulas and simulations carried out in DIgSILENT PowerFactory, where a representative low-voltage grid model was developed. The network model included four transformer power ratings (40, 63, 100, and 160 kVA) and four cable cross-sections (25, 35, 50, and 70 mm2), which made it possible to assess the impact of these parameters on grid hosting capacity as a function of the distance from the transformer station. Based on this, the PHCI indicator was developed to determine the hosting capacity of a low-voltage network, using only the transformer rating and the length and cross-section of the line for the calculations. A comparison of the results obtained using the proposed equation with detailed calculations showed that the approximation error does not exceed 15%, which confirms the high accuracy and practical applicability of the proposed approach. Full article
(This article belongs to the Special Issue New Technologies and Materials in the Energy Transformation)
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23 pages, 3143 KB  
Article
Energy Simulation-Based Assessment of Traditional and Modern Wall Materials for Thermal Performance: A Case Study of a Traditional House in Jordan
by Eman N. Shaqour, Islam A. Alshafei, Ala Abu Taqa, Ahmed Senouci and Ahmed M. Seddik Hassan
Energies 2025, 18(20), 5336; https://doi.org/10.3390/en18205336 - 10 Oct 2025
Cited by 2 | Viewed by 2099
Abstract
In this study, the energy performance of traditional, modern, and insulated wall assemblies in a heritage residential building in Al Salt city, Jordan, is evaluated using the simulation software DesignBuilder version 7.0.2.004. The case study compares the thermal behavior of traditional thick limestone [...] Read more.
In this study, the energy performance of traditional, modern, and insulated wall assemblies in a heritage residential building in Al Salt city, Jordan, is evaluated using the simulation software DesignBuilder version 7.0.2.004. The case study compares the thermal behavior of traditional thick limestone walls, modern reinforced concrete and block-based walls, and contemporary insulated systems under local climatic conditions. The results show that traditional stone walls exhibit limited energy efficiency and require insulation to meet contemporary standards. However, they perform better than modern concrete walls based on their thermal mass. While concrete walls with inadequate insulation exhibit the poorest performance and are associated with significantly higher energy demand and CO2 emissions, insulated wall systems that combine stone with insulation layers demonstrate the best thermal performance and achieve substantial reductions in energy use and environmental impact. These findings emphasize the feasibility of upgrading heritage buildings through the integration of modern insulated wall assemblies, which can lead to considerable energy savings and a lowered carbon footprint while simultaneously keeping the architectural identity and cultural value. Full article
(This article belongs to the Special Issue New Technologies and Materials in the Energy Transformation)
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