During the next 25 years, Hydro-Québec was particularly active abroad with investments in electricity transmission networks and generation: Transelec in Chile, the Cross Sound Cable in the United States, the Consorcio Transmantaro in Peru, Hidroelectrica Rio Lajas in Costa Rica, Murraylink in Australia and the Fortuna generating station in Panama.
In den folgenden 25 Jahren war Hydro-Québec im Ausland vor allem bei Investitionen in Elektrizitätsübertragungsnetze und Kraftwerke aktiv: Transelec in Chile, Cross Sound Cable in den USA, Consorcio Transmantaro in Peru, Hidroelectrica Rio Lajas in Costa Rica, Murraylink in Australien und das Kraftwerk Fortuna in Panama.