Wind energy appears in the form of mechanical energy that can be used directly for mechanical work or electrical power generation without requiring thermodynamic conversion, but it is dilute in nature due to generally low wind velocities. So it requires large wind turbines to produce practically significant amount of energy. Large modern wind turbines operate together in wind farms to produce electricity for utilities, while small turbines are used by homeowners and remote villages to help meet energy needs. Wind is now the fastest growing energy source in the world. The total installed capacity of wind powered generators all over the world in June 2014 was 336 gigawatts (GW). China, United States, Germany, Spain and India are the top 5 countries in the world in wind power installed capacity. The volume 8 is a compilation of articles on diverse approaches for wind resource assessment, types of wind turbines, their performances and selection criteria, wind energy storage systems and many more. The volume 8 involves discussion on the following topics: o Wind power o Wind energy resource assessment methods o Mathematical models and other alternate approaches for wind resource assessment o Accuracy check of wind speed measurements for wind energy study o Wind turbine generators o Wind energy and wind turbine selection o Optimization of wind turbine airfoils/blades and wind farm layouts o Physics of fluids on stall delay of the rotating blade of horizontal-axis wind turbine o Progress in Magnus type wind turbine theories o State-of-the-art, issues and recommendations for wind turbine condition monitoring o Methods for wind turbine protection against direct atmospheric discharges o Evaluation of wind turbine power generation o Matrix converters in wind energy systems o Design concepts in movable wind energy plants o Wind and biomass energies The volume 8 contains 15 chapters from 22 researchers and/or academicians representing 11 nations, namely Algeria, Iran, Malaysia, Nigeria, Poland, Serbia, Singapore, Taiwan, Turkey, United Kingdom and United States of America giving an overview of the various research activities being carried out in different parts of the world in the area of Wind Energy