Eastmain–Sarcelle–Rupert
Complex

Construction of the Eastmain‑Sarcelle‑Rupert complex, led by the Société d’énergie de la Baie James (SEBJ), a Hydro‑Québec subsidiary, began in 2002 and includes the following components:

• Eastmain‑1 generating station, located at the outlet of Paix des Braves reservoir, with an installed capacity of 507 MW.
• Bernard‑Landry generating station (originally Eastmain‑1‑A), with an installed capacity of 768 MW, located near Eastmain‑1 generating station
• Sarcelle generating station, with an installed capacity of 150 MW, located at the outlet of Opinaca reservoir
• The partial diversion of the Rivière Rupert, which channels some of the Rupert’s flow to Bernard‑Landry Eastmain‑1 and Sarcelle generating stations, and then to Robert‑Bourassa, La Grande‑2‑A and La Grande‑1 generating stations

A canal with a concrete weir was built at Lac Sakami’s outlet in order to keep the level of the lake under the maximum level agreed upon.

To integrate the output of the new generating stations into the grid, a 315‑kV line was built between the Eastmain‑1 and Bernard‑Landry switchyards and another between Sarcelle and Eastmain‑1 switchyards.

^* Note that the information on this webpage specifically addresses the Eastmain‑1‑A and Sarcelle generating stations and the Rupert diversion structures.