La Grande-3 generating station photograph

La Grande-3 Generating Station

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Opened 1984
Provinces Quebec
Owners Hydro-Québec
Annual generation12,300 GW·h
Turbines12 × 201. 5 MW (Francis turbine)
Spillway capacity10,000 m3/s (350,000 cu ft/s)
Date of Reg.
Date of Upd.
ID2027026
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About La Grande-3 Generating Station


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.

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