Irkutsk Hydroelectric Power Station

Irkutsk Dam
Irkutsk Dam and the city of Irkutsk
Location of Irkutsk Dam in Russia
Official name	Irkutsk Hydroelectric Power Station
Location	Irkutsk, Irkutsk Oblast, Russia
Coordinates	52°14′34″N 104°19′43″E / 52.24278°N 104.32861°E / 52.24278; 104.32861
Construction began	1950
Opening date	June 1956
Owner(s)	Irkutskenergo
Dam and spillways
Type of dam	Rock-fill, embankment
Impounds	Angara River
Height	44 m (144 ft)
Length	2,740 m (8,990 ft)
Width (base)	225 m (738 ft)
Reservoir
Creates	Irkutsk Reservoir and heightens Lake Baikal
Power Station
Commission date	December 1956
Hydraulic head	31 m (102 ft)
Turbines	4×107.5, 4×82.8[1]
Installed capacity	761.2 MW
Annual generation	4.1 TWh (15 PJ)

The Irkutsk Hydroelectric Power Station (Irkutsk HPS) is a rock-fill dam on the Angara River with an adjacent hydroelectric power station. It is located adjacent to Irkutsk, Irkutsk Oblast in Russia and is the first dam on the Angara cascades.^[2] Construction on the dam began in 1950, its reservoir began filling in 1956 and its first turbines were also commissioned in 1956. It was the first large hydroelectric power station constructed in Eastern Siberia and its completion was hailed by the Soviets as an engineering success.^[3][4]