Hydro quebec is the national energy "company", which is nationalised, but they give contracts to other companies to run parts of their operations - this happenes through multiple deals by one of our past prime minister. At this point, Hydro-Quebec is only directly responsible for a portion of the hydro we create, while it has let natural gas, wind turbines and possibly more to private companies.

It's hard to research even for a french speaker though - I think I might reasearch and write something on it just to clarify my own opinions

Hydro quebec pays a yearly dividend to its sole shareholder, the government of Quebec. For 2022 : "In light of these results, Hydro-Québec will be able to pay a dividend of $3,418 million to the Québec government, its sole shareholder—the largest in its history."

Source : https://www.hydroquebec.com/data/documents-donnees/pdf/annua...