The
La Grande-1 hydroelectric plant is a run of the river hydroelectric power plant on the La Grande River that is part of Hydro-Québec's James Bay Project. The station can generate 1,436
MW and was commissioned in 1994–1995. A "
run of the river" generating station, it is one of only two generating stations of the James Bay Project that use a reservoir without any major water-level fluctuations (the Laforge-2 generating station is the other). Thus, the amount of electricity generated by the station depends almost entirely on the water-flow of the river, which is largely controlled by upstream reservoirs and generating stations.
| La Grande-1 Generating Station |
|---|
| Official name | La Grande-1 |
| Locale | Quebec,  Canada |
| Construction began | 1993 |
| Opening date | 1995 |
| Owner(s) | Hydro-Québec |
| Dam and spillways |
| Impounds | La Grande River |
| Spillway capacity | 16,280 m3/s (574,923 cu ft/s) |
| Reservoir |
| Creates | (Run-of-river) |
| Surface area | 70 km (43 mi) |
| Power station |
| Type | Yes |
| Hydraulic head | 27.5 m (90 ft) |
| Turbines | 12 × 114 MW (Fixed-blade propeller-type turbine) |
| Installed capacity | 1,436 MW |
