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Title: Multi-dimensional barrier identification for wind farm repowering in Spain through an expert judgment approach
Authors: de Simon-Martin, Miguel
Ciria-Garces, Tomas
Rosales Asensio, Enrique 
Gonzalez-Martinez, Alberto
UNESCO Clasification: 332205 Fuentes no convencionales de energía
3306 Ingeniería y tecnología eléctricas
Keywords: Lifetime Extension
Generation, et al
Issue Date: 2022
Journal: Renewable & Sustainable Energy Reviews 
Abstract: Spain was one of the pioneers in the deployment of wind energy systems worldwide and thus since 2014 has a potential for repowering that reaches between 3.3 and 8.7 GW in 2021 (12%-32% of its current installed wind capacity). However, despite the technical and economic advantages, we have observed little interest from pro-moters in the repowering of already amortized wind farms. The aim of the proposed study is to depict the background framework of barriers for repowering wind farms, which is specially affecting to Spain, but that can also extend to other EU countries. Therefore, we conducted a systematic survey study with academics, promoters, financial experts, manufacturers, operators, maintainers and policymakers to identify and understand the existing real and practical barriers. As a result, we have identified 34 major barriers covering five categories: technical issues, economics, environmental considerations, social concerns, and regulatory and administrative hurdles. We then asked the experts to rate these barriers based on their impact or relevance. We found that the experts agree that regulatory and administrative barriers have the maximum impact, while economic, envi-ronmental and technical barriers have only a mid-high impact. Therefore, we can conclude that, in general, the Administration must develop a concise and stable regulatory framework for all RES, especially for repowering projects, and carry out a review of both the technical requirements and the incentives schemes, with a focus on energy efficiency.
ISSN: 1364-0321
DOI: 10.1016/j.rser.2022.112387
Source: Renewable & Sustainable Energy Reviews[ISSN 1364-0321],v. 161, (Junio 2022)
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