The research line Integral Wind Turbine Design covers aspects of aeroelastics, structural dynamics, control and grid connection of the complete wind turbine. One of the basic goals of the group is to reduce uncertainties in design load calculations, through an improved modelling of the physics involved. Design tools for large wind turbines have been developed and are constantly improved, including aeroelastic stability issues and minimisation of the cost of energy. 
The unit upholds the quality and validity of its computer programs through participation in European benchmark studies and through feedback from field experiences. The most important codes of ECN Wind Energy are listed below

In short, the work in the research line Aeroelastics comprises:

• Aeroelastic and hydromechanic behaviour of a wind turbine using sophisticated tools like e.g. AeroModule (including BEM, AWSM for rotor aerodynamics and in the future ROTORFLOW) and PHATAS and TURBU for dynamic load modelling of the turbine and support structure in time domain and frequency domain respectively. Wind and wave fields for use in the time domain code are generated with the SWIFT and ROWS code respectively.
• Assessment of aeroelastic turbine behaviour with the code BLADMODE.
• Development and testing of custom made commercial control algorithms for wind turbines with the Control Design Tool.
• BLADOPT: program to optimise rotor blade geometry for lowest cost of energy.

The FOCUS code of WMC includes several of these design tools.