This book comprises reports on basic research, as well as research related to the practical exploitation and application of wind energy. “Wind Energy"comprehensively describes the atmospheric turbulent wind condition on different time scales, and the interaction of wind turbines with both wind and water flows, which are significant factors to consider for the design, operation and maintenance of wind turbines in offshore conditions. Topics of particular interest include: wind climate and wind field, gusts, extremeevents and turbulence, rotor aerodynamics and wake effects, power production and fluctuations, sea states and wave loads, materials (composites, steel, concrete) and fatigue, and structural health monitoring.