This research is focused on multivariable feedback design for active control of wind turbine blade flutter instability. Studies include the application of decentralized control for aeroelastic systems by using control signals to decouple aerodynamic lift and moment, defining modifications to lift based on the state of plunge and its derivative, and similarly for moment based on pitch. Research has shown that highly stable closed loop responses can be obtained for a wide range of systems. In addition the applicability of the controller to complex structures is being studied, tuning 2 DOF aeroelastic systems to have equivalent primary dynamic responses to analogous three dimensional systems by matching the plunge and pitch modes with the first bending and torsional modes of more complex models. Sources of actuation are also under investigation to understand limitations related to controller saturation.