Hierarchical Mixed-Effects Modeling of Socioeconomic Factors Influencing Renewable Energy Adoption: A Case Study in the Western Balkans

Endri Raco (), Oriana Zaçaj (), Kleida Haxhi () and Etleva Beliu (Llagami) ()
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Endri Raco: Department of Mathematical Engineering, Polytechnic University of Tirane, Tirana, Albania
Oriana Zaçaj: Department of Mathematical Engineering, Polytechnic University of Tirane, Tirana, Albania
Kleida Haxhi: Department of Mathematical Engineering, Polytechnic University of Tirane, Tirana, Albania
Etleva Beliu (Llagami): Department of Mathematical Engineering, Polytechnic University of Tirane, Tirana, Albania

International Journal of Energy Economics and Policy, 2025, vol. 15, issue 6, 460-467

Abstract: The Western Balkans encounter significant challenges in their pursuit of EU accession, necessitating accelerated renewable energy deployment and enhancement of energy security to achieve the objectives of the European Green Deal. Three-tier models evaluate renewable energy capacity data from IRENA covering the period from 2000 to 2024, with World Bank socioeconomic indexes and EU accession criteria. Spatial correlation structures encapsulate technological diffusion impacts among proximate nations, employing LASSO regularization for variable selection and leave- one-country out cross-validation for model validation. The advancement of EU candidacy is strongly associated with renewable growth (2010-2024). Serbia (3,413 MW), Albania (2,827 MW), and North Macedonia (1, 633 MW) have the highest absolute capacity levels, driving regional development. The amount of renewable energy that can be used in the region grew by 98% from 5, 709 MW in 2000 to 11,305 MW in 2024. Hierarchical mixed- effects models can explain 79.6% of the differences in deployment patterns, estimating a controlled annual growth rate of 5.3% expansion in each region every year (P < 0.001). The progression of economic and institutional structures via EU accession promotes adoption, while spatial dynamics suggest that coordinated policies may improve efficiency, thus informing strategies for post-transition economies.

Keywords: Renewable Energy; Western Balkans; Hierarchical Modeling (search for similar items in EconPapers)
Date: 2025
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DOI: 10.32479/ijeep.21086

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