Special Issues

Circular Energy Systems and Sustainable Pathways for Decarbonization

Submission Deadline: 30 September 2026 View: 270 Submit to Special Issue

Guest Editor(s)

Prof. Dr. Viktor Koval

Email: victor-koval@ukr.net

Affiliation: Department of Business and Tourism Management, Izmail State University of Humanities, Izmail, 68610, Ukraine

Homepage:

Research Interests: renewable energy, biomass energy, decarbonizing, energy efficiency, sustainable energy systems

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Dr. Hanna Hrinchenko

Email: h.s.hrinchenko@karazin.ua

Affiliation: Department of Automation, Metrology and Energy Efficient Technologies, V. N. Karazin Kharkiv National University, Kharkiv, 61000, Ukraine

Homepage:

Research Interests: renewable energy, decarbonizing, energy efficiency, sustainable energy eystems, energy management

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Summary

The rapid transformation of energy systems towards climate neutrality requires the integration of the principles of circular economy, sustainable resource management, and effective decarbonization policies. Circular energy systems are now considered key tools for reducing greenhouse gas emissions, increasing energy efficiency, and reducing the resource dependence of economies. The combination of renewable energy sources, the reuse of energy and material flows, digital technologies, and innovative management approaches is shaping new sustainable trajectories for the development of the energy sector.


The aim of this Special Issue is to highlight modern research, practical solutions, and policy approaches aimed at the development of circular energy systems and support for the transition to a low-carbon economy. This special issue explores interdisciplinary approaches that integrate engineering solutions, energy management, environmental policy, and economic mechanisms to promote sustainable development.


We invite researchers, engineers and practitioners to join in forming the scientific basis for a sustainable and circular energy future.


The topics of this special issue include the following:
· Circular Economy Models in Energy Systems.
· Energy Economics, Policy, and Market Design.
· Net-Zero Transitions and Renewable Energy Systems.
· Decarbonization Strategies and Carbon Capture Technologies.
· Energy Efficiency and Sustainable Energy Management.
· Digitalization and Artificial Intelligence in Energy Systems.
· Life Cycle Assessment and Energy Policy for Sustainable Energy Systems.
· Energy and Climate Policy Instruments.
· Energy Efficiency and Resource Optimization.


Keywords

circular energy, decarbonization, sustainable energy systems, renewable energy sources, energy efficiency, energy management, climate policy, low-carbon economy.

Published Papers


  • Open Access

    ARTICLE

    Operational Constraints and Energy System Resilience under Low-Carbon Transition

    Viktoriia Mykytenko, Veronika Khudolei, Oleksandr Hurin, Halyna Kryshtal, Svetlana Mishchenko, Roman Iskiv
    Energy Engineering, DOI:10.32604/ee.2026.084053
    (This article belongs to the Special Issue: Circular Energy Systems and Sustainable Pathways for Decarbonization)
    Abstract This study develops a conceptual and analytical approach to assessing energy system (ES) resilience under conditions of a low-carbon transition, with particular attention to the role of operational constraints and adaptive capacity. The study demonstrates that, under conditions of polycrisis transformation, ES resilience cannot be adequately evaluated solely through technical and technological indicators, but requires the integration of functional, institutional, and operational parameters. An integrated resilience model is proposed in which operational constraints are interpreted as an endogenous structural factor that determines the boundary conditions of system functioning and shapes ES development trajectories. The methodological… More >

  • Open Access

    ARTICLE

    Risk-Based Qualimetric Assessment for Managing Power Unit Operation Using a Graph-Based Model

    Hanna Hrinchenko, Nataliia Antonenko, Halyna Kryshtal, Alla Krysak, Svitlana Bilous-Sergieieva, Yana Medvedovska
    Energy Engineering, DOI:10.32604/ee.2026.084705
    (This article belongs to the Special Issue: Circular Energy Systems and Sustainable Pathways for Decarbonization)
    Abstract The transition towards long-term operation and increasing safety standards for nuclear power plant (NPP) units necessitates a fundamental shift from isolated technical monitoring to integrated, risk-oriented performance evaluation. The increasing complexity, safety requirements, and extended operation of nuclear power plant (NPP) units necessitate advanced approaches for assessing their functional performance. This study aims to develop a risk-oriented qualimetric (integrated multi-criteria quality assessment) methodology for comprehensive evaluation of NPP unit operation, integrating both quantitative and qualitative indicators while accounting for their interdependencies. This study develops a novel risk-oriented qualimetric methodology for the holistic assessment of NPP… More >

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