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New Insights into Decision Making Methods for Renewable Energy Investments

A special issue of Energies (ISSN 1996-1073). This special issue belongs to the section "A: Sustainable Energy".

Deadline for manuscript submissions: 22 June 2026 | Viewed by 2026

Special Issue Editors


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Guest Editor
1. Institute of Social Sciences and Applied Informatics, Vilnius University, LT-01513 Vilnius, Lithuania
2. Department of Resource Economics, Lithuanian Centre for Social Sciences, LT-01108 Vilnius, Lithuania
Interests: renewable energy; sustainable energy; sustainability assessment; multi-criteria decision-making; sustainability; social equity; social justice; energy transition
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Guest Editor
Department of Resource Economics, Lithuanian Centre for Social Sciences, LT-01108 Vilnius, Lithuania
Interests: sustainable development; agricultural efficiency; international economics; resource and environmental economics; regional economics and politics

Special Issue Information

Dear Colleagues,

The global transition towards low-carbon energy systems has underscored the critical role of renewable energy investments. As the deployment of renewable technologies expands, decision-making processes surrounding such investments are becoming increasingly complex. These complexities arise from various interrelated technical, economic, environmental, and social factors, often characterized by uncertainty and the need for multi-criteria evaluation.

This Special Issue aims to bring together recent advances in decision-making methods applied to renewable energy investments. We welcome contributions that develop, apply, or critically assess decision-making tools and methodologies—such as multi-criteria decision analysis (MCDA), real options analysis, machine learning, optimization techniques, stochastic modelling, and other hybrid or novel approaches. We are particularly interested in studies that provide new theoretical insights, practical frameworks, or case-based applications that address current challenges in selecting, financing, and managing renewable energy projects.

Potential topics include, but are not limited to the following:

  • Multi-criteria and multi-objective decision-making in renewable energy planning and investment;
  • Risk and uncertainty modelling in investment decisions;
  • Decision support systems and computational tools for renewable project evaluation;
  • Integration of techno-economic, environmental, and social criteria in investment appraisal;
  • Comparative analysis of decision-making methods in the context of renewables;
  • Applications of artificial intelligence and machine learning in energy investment decisions;
  • Policy implications of decision-making frameworks for renewable energy.

Original research articles, reviews, and methodological papers are all welcome. We look forward to your contributions to this Special Issue, which aims to foster an interdisciplinary dialogue and inform both academic research and practical policy design in the field of renewable energy investment decision-making.

Dr. Indre Siksnelyte-Butkiene
Dr. Justas Štreimikis
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

  • renewable energy investments
  • decision-making methods
  • multi-criteria analysis
  • risk and uncertainty
  • investment appraisal
  • optimization
  • real options
  • artificial intelligence
  • sustainable energy planning

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Published Papers (2 papers)

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Research

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24 pages, 1730 KB  
Article
Effective Planning and Management of Hybrid Renewable Energy Systems Through Graph Theory
by Aikaterini Kolioukou, Athanasios Zisos and Andreas Efstratiadis
Energies 2026, 19(5), 1381; https://doi.org/10.3390/en19051381 - 9 Mar 2026
Viewed by 606
Abstract
Hybrid renewable energy systems (HRESs), mixing conventional and renewable power sources and occasionally storage units, have become the norm regarding electricity generation. Robust long-term planning of such systems requires stakeholders to test different layouts and system configurations, while their operational management relies on [...] Read more.
Hybrid renewable energy systems (HRESs), mixing conventional and renewable power sources and occasionally storage units, have become the norm regarding electricity generation. Robust long-term planning of such systems requires stakeholders to test different layouts and system configurations, while their operational management relies on forecasting surpluses and deficits to achieve optimal decision making. However, both tasks, which in fact constitute a flow allocation problem across power networks, are subject to multiple peculiarities, arising from the nonlinear dynamics of the underlying processes, subject to numerous technical and operational constraints. Interestingly, a mutual problem emerges in water resource systems, also comprising network-type storage, abstraction and conveyance components. In this vein, triggered from well-established simulation approaches from the water domain, we introduce a generic (i.e., topology-free) and time-agnostic framework, the key methodological elements of which are: (a) the graph-based representation of the power fluxes; (b) the effective handling of energy uses and constraints through virtual nodes and edges; (c) the implementation of priorities via proper assignment of virtual costs across all graph components; and (d) the configuration of the overall problem as a network linear programming context, which allows the use of exceptionally fast solvers. Specific adjustments are required to address highly complex issues within HRESs, particularly the representation of conventional thermal and pumped-storage hydropower units, as well as the power losses across transmission lines. The modeling approach is stress-tested by means of configuring a hypothetical HRES in a non-interconnected Aegean island, i.e., Sifnos, Greece. Full article
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Review

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28 pages, 946 KB  
Review
Equity-Oriented Decision-Making for Renewable Energy Investments
by Justas Streimikis and Indre Siksnelyte-Butkiene
Energies 2026, 19(2), 463; https://doi.org/10.3390/en19020463 - 17 Jan 2026
Cited by 1 | Viewed by 752
Abstract
Renewable energy investment evaluation continues to rely predominantly on techno-economic and environmental criteria, while equity-related considerations remain weakly embedded within formal decision-support frameworks. Although recent research increasingly acknowledges social impacts, spatial constraints, policy uncertainty, and financing structures, these dimensions are rarely integrated in [...] Read more.
Renewable energy investment evaluation continues to rely predominantly on techno-economic and environmental criteria, while equity-related considerations remain weakly embedded within formal decision-support frameworks. Although recent research increasingly acknowledges social impacts, spatial constraints, policy uncertainty, and financing structures, these dimensions are rarely integrated in a systematic and operational manner into investment appraisal. This paper addresses this gap by advancing an equity-oriented conceptual framework for renewable energy investment evaluation. Using an integrative literature review combined with thematic analysis, the study synthesises insights from techno-economic assessment, multi-criteria decision-making, energy justice scholarship, and equity-focused modelling studies. The analysis demonstrates that existing evaluation approaches inadequately capture distributional impacts, accessibility constraints, differentiated vulnerability, and equity-adjusted risk. In response, the proposed framework systematises these equity dimensions and embeds them directly into the core logic of investment evaluation alongside conventional criteria. By consolidating fragmented research insights into a coherent evaluative structure, the study contributes to the literature by clarifying how equity can be operationalised within renewable energy investment decision-making. The framework provides a foundation for future empirical applications and supports more socially responsive and analytically robust investment evaluation. Full article
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