Wind Energy, the furthest developed sustainable energy source which beats the price levels of fossil fuel sources, and for which a wide array of innovative research is being performed at TU Delft. Lighter structures and materials, innovative cost-efficient designs, smart O&M processes, optimal grid integration, smart control of wind turbines and wind farms, wind farm and support structure optimisation, wind turbine materials, floating offshore wind turbines, airborne wind energy and many other wind energy research topics are addressed at TU Delft in cooperation with a large network of international partners, supported by state of the art wind tunnel facilities.