Is a large hydroelectric complex on the Lotru River situated in Romania and one of the biggest complex facilities in Europe. The complex consists of three hydroelectric power plants. The first and most productive one is Ciunget, the second one is Malaia and the third one is Bradisor which, just as Ciunget is an underground power plant. All the used water is recollected via an underground piping system and flows to the Malaia dam where is the second power plant.