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La Grande-3 generating station

Coordinates: 53°43′47″N 75°58′06″W / 53.72972°N 75.96833°W / 53.72972; -75.96833
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La Grande-3 generating station
Official nameLa Grande-3
LocationBaie-James, Quebec, Canada
Coordinates53°43′47″N 75°58′06″W / 53.72972°N 75.96833°W / 53.72972; -75.96833
Opening date1984
Owner(s)Hydro-Québec
Dam and spillways
ImpoundsLa Grande River
Spillway capacity10,000 m3/s (350,000 cu ft/s)
Reservoir
CreatesLa Grande-3 Reservoir
Surface area2,420 km2 (934 sq mi)
Power Station
Hydraulic head79.2 m (260 ft)
Turbines12 × 201.5 MW (Francis turbine)
Installed capacity2,418 MW
Annual generation12,300 GW·h
Hydro-Québec, The La Grande Complex visitor booklet, 2004, ISBN 2-550-41276-1

The La Grande-3 or LG-3 is a hydroelectric dam on the La Grande River in northern Quebec, part of Hydro-Québec's James Bay Project. The station can generate 2,418 MW and was commissioned in 1982–1984. It generates electricity through the reservoir and dam system. The dam and reservoir both are named La Grande-3. The community of Sakami was founded for its construction.

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