*Article* **Environmental Compatibility of the Parc Tramuntana Offshore Wind Project in Relation to Marine Ecosystems**

**Koldo Diez-Caballero 1, Silvia Troiteiro 2,\*, Javier García-Alba 3,†, Juan Ramón Vidal 1, Marta González 2, Sergi Ametller <sup>2</sup> and Raquel Juan <sup>2</sup>**


**Abstract:** Parc Tramuntana is the first offshore wind project being promoted in the Catalonian waters, and due to this newness, it has generated a strong social debate surrounding expected environmental and socioeconomic impacts traditionally associated to marine wind farms, as there are no relevant references in this area. The objective of this report is to provide a specific analysis of some of the main potential impacts, based on detailed information and quantitative data, in order to place these impacts in a realistic context and determine their actual magnitude. This analysis is fed by diverse and detailed studies carried out over the last two years to assess the environmental impact of the project, in accordance with current regulations. According to environmental impact assessment, which is based on a standardized methodology, the impact of the project is objectively qualified as MODERATE on vectors such as turbidity and sedimentation, underwater noise, hydrodynamic circulation or the alteration of electromagnetic fields, and NOT SIGNIFICANT on aspects such as the proliferation of invasive exotic species. As this is an ongoing assessment process, this report presents initial conclusions that do not yet address all possible impacts. Nevertheless, the authors stress the importance of framing the debate on offshore wind in Catalonia in the context of the urgency of the climate emergency and its inevitable impacts on the natural environment.

**Keywords:** offshore wind impacts; turbidity; sediment dispersion; electromagnetic fields; acoustic impact; marine hydrodynamics; invasive species
