High Quality Content by WIKIPEDIA articles! The Volga Hydroelectric Station or Volga GES (Russian: ) also known as the 22nd Congress of the CPSU Stalingrad/Volgograd Hydroelectric Power Station (Russian: / XXII ), is the largest hydroelectric station in Europe and is the last of the Volga-Kama Cascade of dams, before the Volga River flows into the Caspian Sea. Today, it is operated by the electricity company RusHydro.