## 4 Conclusions  
The viability of exploiting the energy to be produced in hybrid wind-wave farms in the NW Iberian Peninsula for the near future (2026-2045) was investigated using a Delphi method to classify wind and wave energy resources. This classification was based on different indices that represent the resource richness, variability, risk, and cost of the energy resources.  
The richness category shows the same patterns for both energy resources, with the highest values in the NW corner of the study area. The variability of the resource also shows a similar pattern for both wind and waves, with the highest values located south of Cape Finisterre. Both resource and variability factors are higher (better) for wind than for wave resource, the downtime factor being better for waves.  
The best risk conditions occur along the coastal region, both for wind and waves. In the oceanic part, the conditions improve from north to south. In general, the risk index is worst for wind than for waves.  
Finally, a macroscopic evaluation of the hybrid wind-wave resource shows that most of the NW Iberian Peninsula presents good conditions (CI \(>\) 0.6) for harvesting energy from wind and wave resources simultaneously. In particular, there are some optimal areas (CI \(>\) 0.7), such as the region near Cape Roca and the Galician coast, which had already been highlighted in previous studies on wind ([PERSON] and [PERSON], 2017) and wave ([PERSON], 2017) resources.  
The assessment carried out in this study must be considered as a decision support toolkit in the identification of the best locations for hybrid wind-wave farms, or in the management, adaptation, and resilience of projected and ongoing plans. This assessment only considers the resource from a physical point of view and can be complemented with the technical features of different devices, legal, and environmental constraints, the costs linked to the support of the electric grid connection, and other indices that consider the relation between the maximum production values of both wind and wave resources and the grid energy demand.  
Figure 11: Classification of the combined wind-wave energy resource in the NW Iberian Peninsula for the near future (2026–2045).  
**Author Contributions**: Conceptualization, [PERSON] ([PERSON]), X.C., M.d.C. and M.G-G.; methodology, X.C. and M.G-G.; formal analysis, [PERSON] ([PERSON]), X.C., M.d.C., D.C., A.R. ([PERSON]) and M.G.-G.; writing--original draft preparation, [PERSON] ([PERSON]); writing--review and editing, [PERSON] ([PERSON]), X.C., M.d.C., D.C., J.M.D., A.R. ([PERSON]) and M.G.-G.; visualization, X.C., M.d.C., D.C., J.M.D., A.R. ([PERSON]) and M.G.-G.; All authors have read and agreed to the published version of the manuscript.  
**Funding**: The first author of this work has been supported by the Portuguese Science Foundation (FCT) through a doctoral grant (SFRH/BD/114919/2016). Thanks are also due to FCT/MCTES for the financial support to CESAM (UIDB/50017/2020+UIDF/50017/2020), through national funds. This work was partially supported by Xunta de Galicia under project DE43 IC 2017/64-G CRC (Grupos de Referencia Competitivia) and by Ministry of Economy and Competitiveness of the Government of Spain under the project \"WELCOME ENE2016-75074-C2-1-R\" funded by European Regional Development Fund (ERDF). This study is also part of the project \"WECAnet: A pan-European network for Marine Renewable Energy\" (CA17105), which received funding from the HORIZON2020 Framework Programme by COST (European Cooperation in Science and Technology), a funding agency for research and innovation networks.  
**Conflicts of Interest**: The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analysis, or interpretation of data; in the writing of the manuscript; or in the decision to publish the results.