Bersimis-1 generating station

Bersimis-1 generating station
Location of Bersimis-1 generating station in Quebec
Location	Lac-au-Brochet, Quebec, Canada
Coordinates	49°17′44.8″N 69°33′2.9″W / 49.295778°N 69.550806°W / 49.295778; -69.550806Coordinates: 49°17′44.8″N 69°33′2.9″W / 49.295778°N 69.550806°W / 49.295778; -69.550806
Construction began	1953
Opening date	1956
Owner(s)	Hydro-Québec
Dam and spillways
Type of dam	Gravity dam
Impounds	Betsiamites River
Height	61 m (200 ft)
Length	670.5 m (2,200 ft)
Reservoir
Creates	Pipmuacan Reservoir
Total capacity	13,900 million m3
Surface area	79,800 ha
Power station
Turbines	8
Installed capacity	1,178 MW

The Bersimis-1 generating station is a dam and a hydroelectric power station built by Hydro-Québec in conjunction with Perini, Atlas and Cartier construction companies on the Betsiamites River, in Lac-au-Brochet, 85 km (53 mi) north of the town of Forestville, Quebec. Construction started in 1953 and the power station was commissioned in 1956 with an initial nameplate capacity of 912 megawatts.

It is the first plant ever built by Hydro-Québec and it has been described as a turning point in the history of electricity in province, paving the way for the takeover of all private utilities by the government-owned corporation in 1963. Three years later, the first plant was followed by a second one, built 30 km (20 mi) downstream. Bersimis-2 entered service in 1959.

With upgrades, a major overhaul in the 1990s and further river diversions, Bersimis-1 installed capacity has been increased over time to its current 1,178 megawatts.

The Betsiamites River, also known as the Bersimis, is located halfway between the Saguenay and Outardes rivers, on the north shore of the Saint Lawrence River, 300 km (190 mi) downstream from Quebec City. With the exception of an Innu reserve at Betsiamites, at the mouth of the river, the area is scarcely populated.

The word Betsiamites or Pessamit is from the innu language and means "the assembly place of the lampreys".Bersimis was not used by either the Innus, the French or the French Canadians, but was introduced by British admiral Henry Wolsey Bayfield, in his hydrographic surveys of the Saint Lawrence River of 1837. The Hudson's Bay Company used the name when opened a trading post in 1855, as did the post office in 1863. After 2 decades of efforts, residents and the Quebec government convinced the federal government to start using Betsiamites in 1919. But administrative use of Bersimis perdured for decades and Hydro-Québec used it in the 1950s to name its facility in the area.