Kolyma Hydroelectric Station

Kolyma Dam
Kolyma Dam
	Location of Kolyma Dam in Russia
Official name	Kolyma Hydroelectric Station
Country	Russia
Location	Sinegorye, Yagodninsky District, Magadan Oblast
Coordinates	62°3′19.68″N 150°24′29.83″E / 62.0554667°N 150.4082861°E
Purpose	Power
Status	Operational
Construction began	1974
Opening date	1982; 42 years ago
Owner(s)	RusHydro
Dam and spillways
Type of dam	Embankment, rock-fill
Impounds	Kolyma River
Height	134.5 m (441 ft)
Length	683 m (2,241 ft)
Spillway capacity	11,300 m3/s (400,000 cu ft/s)
Reservoir
Total capacity	15,080,000,000 m3 (12,230,000 acre⋅ft)
Active capacity	7,240,000,000 m3 (5,870,000 acre⋅ft)
Surface area	454.6 km2 (175.5 sq mi)
Operator(s)	RusHydro
Commission date	1982–1994
Type	Conventional
Hydraulic head	115.2 m (378 ft)
Turbines	4 x 180 MW Deriaz-type; 1 x 180 MW Francis-type
Installed capacity	900 MW

Kolyma Hydroelectric Station is located on the Kolyma River in the village of Sinegorye, Yagodninsky District, Magadan Oblast Russia. It has an installed power generation capacity of 900 MW.^[2] Kolyma HPP is the basis of the energy system of Magadan Oblast; it produces about 95% of the electricity in the region. It is the upper stage of the Kolyma cascade, while the lower one (Ust-Srednekan Hydroelectric Plant) of 570 MW installed capacity is under construction.

Construction began in 1974 and the first generator was commissioned in 1982, the last in 1994. Construction of the Kolyma HPP was carried out in the harsh climatic conditions in the zone of permafrost. At 134.5 m (441 ft), it is the highest earth filled dam in Russia. It is also the most powerful hydroelectric plant in the country with an underground power station.