Source of the electricity Hydro-Québec's electricity transmission system

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much of electricity generated hydro-québec generation comes hydroelectric dams located far load centres such montreal. of 33,000 mw of electrical power generated, on 93% of comes hydroelectric dams , 85% of generation capacity comes 3 hydroelectric generation centers: james bay, manic-outardes, , churchill falls.



james bay



the spillway of robert-bourassa dam (formerly la grande-2 dam), 1 of many hydroelectric dams supplying power load centres of montreal, quebec city, , northeastern united states


the james bay project encompasses la grande project, located on la grande river , on tributaries, such eastmain river, in northwestern quebec. la grande project built in 2 phases; first phase lasted twelve years 1973 1985 , second phase lasted 1985 present time. in all, 9 hydroelectric dams there produce on 16,500 mw of electric power, robert-bourassa or la grande-2 station generating on 5,600 mw alone. in total, project cost on c$20 billion construct.



manic-outardes power stations

the manic-outardes river area in côte-nord or north shore region consists of several hydroelectric facilities located on 3 principal rivers, west east: betsiamites river, rivière aux outardes, , manicouagan river. single plant named sainte-marguerite-3 located east on sainte-marguerite river. facilities located in region constructed on period of 5 decades, 1956 2005. total generation capacity these power stations 10,500 mw. 21-mw hydroelectric power station, lac-robertson generating station on lower north shore, not connected main quebec grid.



churchill falls


churchill falls single underground generation station located on churchill river near town of churchill falls , smallwood reservoir in labrador. constructed on period of 5 6 years 1966 1971–72 churchill falls (labrador) corporation (cflco), though generators installed after major construction completed. single generation facility cost c$946 million construct , produced 5,225 mw of power after eleven generating units installed. station upgrade in 1985 raised generating capacity on 5,400 mw. hydro-québec generation owns 34.2% interest in cflco, same company constructed generating plant. however, hydro-québec has rights of 5,400 mw of power station produces under 65-year power purchase agreement, expiring in 2041.




view of churchill falls, electrical substation, , 3 735 kv lines span river gorge








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