Wind energy has experienced an astonishing growth over the last decades and is expected to gain even more prominence in the near future. Therefore, more powerful machines are being designed, which require larger rotor diameters and higher towers to sweep larger areas and reach faster winds. The sub-scaling of those machines raises as a strong opportunity to understand the behavior of such large wind turbines due to its cost e ective nature and sensorizing advantages. This study aims at preparing the design and simulation code Cp-Max for this trend, by including new constraints to design sub-scale models capable of replicating the dynamic behavior of very large wind turbines. Furthermore, these were implemented to compare two di erent subscaling strategies: the down-zooming of a 10 MW machine and the constrained redesign of a 700 kW wind turbine. Even though the former presented a perfect re ection of the full-scale dynamic behavior, some issues can be identi ed. Among these, the mismatching of the Reynolds number or manufacturing dificulties due to the thinness of several components raise doubts on the model feasibility. The latter is designed with airfoils that are more suitable to the sub-scale Reynolds number. This model was found to employ a much more realistic structure despite not yet completely matching all scaling requirements. However, these can be solved by the inclusion of more constraints into the Cp-Max environment, while the concerns identi ed in Z-Model can not be xed due to the tightness of the approach.