The Betz limit is a theoretical maximum efficiency for wind turbines, stating that no turbine can capture more than 59.3% of the kinetic energy in wind. This limit arises from the need to allow some wind to pass through the turbine, ensuring that it can continue to generate energy. Developed by German physicist Albert Betz in 1919, the Betz limit is crucial for understanding wind energy conversion. It helps engineers design more efficient turbines by setting a benchmark for performance, guiding advancements in turbine technology and optimizing energy production from wind resources.