The Iron Gate I Hydroelectric Power Station is the largest dam on the river Danube and one of the largest hydro power plants in Europe. It is located on the Iron Gate gorge, between Romania and Serbia. Romanian side of HPP is called Porțile de Fier I, and the Serbian side is known as Ђердап I, Đerdap I).
The Djerdap Hydropower and Navigation System consists of an overflow dam, located in the middle of the river, two hydropower plants at the dam toe in the extension of the dam towards the banks, and two double-step navigation locks located between each power plant and corresponding bank, respectively.
