Enbridge will take the half-share alongside developer EDF EN Canada.
Massif du Sud consists of 75 REpower turbines. Construction work at the project is due to end this month.
Once fully-operational it will supply power to utility Hydro-Quebec under a 20-year power purchase agreement.
EDF EN Canada and Enbridge are already co-investors in the 300MW Lac Alfred project.
Enbridge is a major player in the energy and power transport sector, and has emerged as a significant renewables investor over the past few years.
