Porogi (Thresholds) is the oldest and longest serving hydroelectric plant in Soviet Union and Russia, celebrating its 100th anniversary in 2009. There is an eponymous village nearby with a population of twenty people, which nowadays, due to a station, is self-sufficient from external sources of electricity. The village is located on the shore of an artificial reservoir; this is an equipment power station which was built by the Germans and has been working almost continuously since 1909. Nearby, an abandoned mini-plant for the smelting of ferroalloys, lies. The hydroelectric plant was originally built for the needs of the mini-plant, and since 1993 the complex has received the status of a monument of international significance by UNESCO.
There is unique equipment brought from all over Europe and all facilities have not been reconstructed since they have been built. The hydroelectric plant is shown in the following photos, with the image of the Ural Mountains in the background.