The Ust-Ilimsk Hydroelectric Power Station (Ust-Ilimsk HPS) is a concrete gravity dam on the Angara River and adjacent hydroelectric power station. It is located near Ust-Ilimsk Irkutsk Oblast in Russia and is the third and last dam on the Angara cascades. Construction on the dam began in 1963 its reservoir began filling in 1974 and its power plant was commissioned in 1980.
