The Vorotan Cascade, or the ContourGlobal Hydro Cascade, is a cascade on the Vorotan River in Syunik Province, Armenia. It was built to produce hydroelectric power and provide irrigation water. The Vorotan Cascade consists of three hydroelectric power plants and five reservoirs with a combined installed capacity of 404.2 MW. It is one of the main power generation complexes in Armenia.

The Vorotan, or Bargushad or Bazarchay, is a river in the South Caucasus that is the largest right tributary of the Hakari river. It starts from the northwestern slopes of the Syunik Plateau, from the Tsalk pond and adjacent springs at an altitude of 3,045 m, receives the water of streams flowing from several small ponds, as well as the springs of Gorayk village, then it flows in a southeastern direction through the territory of Sisian and Goris regions. It flows through Armenia for 119 kilometres (74 mi) in a generally south-easterly direction. The river enters Azerbaijan again, flowing for 43 km (27 mi) through the districts of Qubadli and Zangilan. The lower section of the Hakari, from its confluence with the Vorotan until its confluence with the Aras river, is sometimes considered to be part of the Vorotan.