| La Grande-4 generating station | |
| Name Official: | La Grande-4 |
| Dam Crosses: | La Grande River |
| Location: | Baie-James, Quebec, Canada |
| Dam Length: | 3800m (12,500feet) |
| Dam Height: | 125m (410feet) |
| Plant Hydraulic Head: | 116.7m (382.9feet) |
| Spillway Capacity: | 73350NaN0 |
| Opening: | 1986 |
| Owner: | Hydro-Québec |
| Res Name: | LG-4 Reservoir |
| Res Surface: | 7650NaN0 |
| Plant Turbines: | 9 × 308.8 MW (Francis turbine) |
| Plant Capacity: | 2,779 MW |
| Coordinates: | 53.8861°N -73.4625°W |
| Extra: | Hydro-Québec, The La Grande Complex visitor booklet, 2004, |
The La Grande-4 (LG-4) is a hydroelectric generating station on the La Grande River in Quebec, Canada that is part of Hydro-Québec's James Bay Project. The station can generate 2,779 MW and was commissioned in 1984.[1] [2] [3] It generates electricity through the reservoir and dam system.