 The 662.4 MW Irkutsk Hydroelectric Power Station was the first cascade hydroelectric power station in the Irkutsk region.The construction of the dam started in 1950 and finished in 1958.The largest industry in Irkutsk is Irkut, the Irkutsk Aviation Industrial Association, which was set up in 1932 in the Transbaykal region of the Soviet Union.