2166 6. CONCLUSIONS The success of Pillones goes beyond ESG discourse and stands as a tangible operational model of strategic infrastructure. Recognized with the Climate Positive Award 2022 by Green Cross UK, it demonstrates strong potential for replication in other arid and mining regions worldwide. In just over two decades, copper production in Arequipa increased from 87 thousand metric tons of fine copper (MTF) in 2002 to more than 470 thousand MTF in 2023—an increase of more than fivefold (8.4% average annual growth). In parallel, real regional GDP grew by 47% between 2007 and 2023, reaching 5.4% of national GDP, while mining electricity demand increased tenfold. The labor impact was equally significant: the economically active population rose from 570,000 people in 2005 to 789,000 in 2024 (+38%), and effective employment expanded by approximately 215,000 jobs (+41%). What is extraordinary is that this productive, economic, and employment growth did not result in hydrological collapse. On the contrary, the regulation initiated by Pillones increased dry-season water availability by 30%, strengthening regional water security. Moreover, the model evolved from a storage-based logic toward a dynamic of territorial regeneration: environmental restoration of the Chili River, large-scale wastewater treatment, agricultural expansion with ecosystem benefits, and the decoupling of mining growth from freshwater extraction. Pillones served as the enabling infrastructure that allowed mining expansion to translate into regional development without compromising water security, giving rise to the Virtuous Water Circle—a model in which productive growth finances infrastructure that, in turn, strengthens resilience, decarbonization, and territorial regeneration. More importantly, this model demonstrates that strategic infrastructure, when articulated under a public–private governance framework and integrated water management approach, is replicable in other arid and semi-arid regions where mining expansion faces water constraints. Pillones is not an isolated case; it is an operational precedent for transforming scarcity into a platform for sustainable and regenerative development. ACKNOWLEDGEMENTS The Pillones Project was the result of effective coordination among the public sector, the private sector, and the local community. Recognition is extended to the Empresa de Generación Eléctrica de Arequipa (EGASA) and Sociedad Minera Cerro Verde S.A.A., whose institutional decisions made it possible to structure and implement the project under a pioneering public–private cooperation framework. Acknowledgment is given to Hayllee Llosa for her role in initiating the early dialogue spaces that facilitated the subsequent negotiation process. Likewise, Fernando Chaves Belaúnde, Project Manager of Pillones and advisor to EGASA, is recognized for his technical contribution during the formulation and development phases. The community of Pillone is also acknowledged for its participation in the implementation process within the framework of the established agreements. Special recognition is extended to Dr. Julia Torreblanca of Sociedad Minera Cerro Verde S.A.A. for her role in managing the permits and authorizations related to the water use license.
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