The increase in renewable energy sources such as wind solar tidal and hydropower will levitate as much as possible in the current configuration The profitable sustainable and clean nature of the wind explains why it is the fastest growing energy source in the world The wind farms were built with fixed speed wind turbines and induction generators in the olden days for wind power development Energy efficiency is literally low for most wind speeds as such generators because it always prefers constant speed operation In order to achieve better efficiency today the development of large modern wind generators with variable speed operation has increased Wind energy is fast becoming one of the world's leading sources of renewable energy Most wind farms use fixed speed wind turbines their performance depends on the characteristics of the mechanical sub circuits every time a gust of wind hits the turbine you can observe a fast and strong variation of the electric output power as the response time of the mechanical sub circuits is of the order of 10 milliseconds