The maximum theoretical limit of the efficiency of windmills in converting wind energy into electrical energy is 59.3%.
The efficiency of wind power refers to the proportion of wind energy converted into electrical energy. According to theoretical calculations, the maximum theoretical limit of a windmill converting wind energy into electrical energy is 59.3%. This value is called the Betz limit, and it represents the maximum efficiency of wind energy conversion under ideal conditions. However, in practice, the efficiency of wind power is often lower than the theoretical limit. The efficiency of actual wind turbines is affected by many factors, including wind speed, wind direction, wind wheel design, generator efficiency, etc. Currently, the average efficiency of commercially operated wind turbines is about 30% to 40%.