The power station generates power via steam. In the pink area, water is heated up by the radiation from the uranium/plutonium stored inside the long rods. The water goes past boiling point, but stays liquid because of a pressure containment unit. This water flows through a pipe right next to another pipe that leads to the blue area. There, the water in the blue area is heated up by the pink area's water and turns into steam. This steam is used to rotate a turbine which is harnessed and then given to a generator, which produces the power plant's electricity. The steam is moved to a cooling area where the steam is condensed, taken to the the start of the blue area and the process starts over. The water in the pink area is reused and never used for a different reason because it is now radioactive. The cool water in the cooling area is taken from the four massive cooling towers and absorbs the heat from the steam. This is why the cooling towers produce steam. To make up for the loss of water in the cooling towers, water is taken from a reservoir, lake or river (hence the artificial lake that flooded Ouvrage Kobenbusch).