The Kaplan turbine is a type of water turbine used for hydroelectric power generation. It is designed to operate efficiently in low-head sites, where the water flow is not very high. The turbine features adjustable blades, allowing it to adapt to varying water flow conditions, which enhances its efficiency. Invented by Viktor Kaplan in the early 20th century, the Kaplan turbine is a propeller-type turbine. It consists of a runner with blades that can be tilted, enabling optimal performance across different water levels. This adaptability makes it a popular choice for modern hydroelectric plants.