Pumps are widely used in industry, agriculture and in public utilities. However, it is in power engineering that pumps find the widest range of applications. The technological systems of nuclear and thermal power plants involve transferring large quantities of fluids with different physical and chemical properties at different pressure and temperature. Thus, safe and reliable operation of power units depends largely on reliable pump operation. The offered online course contains six modules and 22 lessons. It focuses on the following: “Brief historical outline of pump development ", "Classification and design of pumps", "The main nodes of pump design", "Pump stage theory ", "Pump characteristics", "Pump operation in the system". The course will be helpful for students majoring in Power Engineering and for power plant personnel who want to deepen their knowledge in the main equipment and components of power-generating facilities.