ISEP - DM – Engenharia Electrotécnica – Sistemas Eléctricos de Energia
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- Avaliação do ciclo de vida da pegada de carbono e estratégias de economia circular para a subestação de Ponte de LimaPublication . CARDOSO, ANDRÉ SANTOS; Andrade, Tiago BrancoThis document explores and contributes to the strengthening of the integration of circular economy and sustainability criteria in the infrastructure of REN (Redes Energéticas Nacionais), focusing particularly in the Ponte de Lima substation. The growing environmental concerns and the European Union’s ambitious climate goals place increasing pressure on the energy sector to evolve from the traditional linear economy model to a more sustainable circular economy model. This transition is of utmost importance, as the energy sector is both an enabler of society’s decarbonization and, at the same time, a significant consumer of virgin materials and source of emissions. In the context of the circular economy, this document addresses methodologies, frameworks, and implementation tools, as well as initiatives to support the adoption of strategies for extending the lifecycle of assets, integrating recycled materials into construction works, and minimizing waste through product design and operation and maintenance strategies. The document also explores the state of the circular economy in the European Union and in Portugal, analyzing the goals set by both, as well as the current state of virgin material use, waste management, and public opinion on the matter within the EU. Finally, the document emphasizes the challenges that transmission system operators face and need to address, such as asset lifecycle management and resource efficiency, highlighting the importance of implementing circular practices and their benefits. Subsequently, a benchmark of several European transmission system operators comparable to REN in terms of operations and objectives was carried out, with the purpose of analyzing their strategies and efforts for the possible incorporation of best practices. This analysis revealed that several companies are already directing attention and resources toward transitioning to a circular economy, achieving quantitative results. Lastly, a brief description of REN’s national infrastructure and the role it assumes as an operator was provided. The initiatives and projects implemented or underway at REN for the integration of the circular economy into its operations were also analyzed. The implementation of a circular economy strategy at REN represents a major challenge, one that cuts across several internal departments and impacts the entire supply chain.