Harmon is a 219.3MW hydro power project. It is located on Mattagami river/basin in Ontario, Canada. The project is currently active. It has been developed in multiple phases. Post completion of construction, the project got commissioned in 1965.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 219.3 219.3 Active Ontario, Canada Hydro-Electric Power Commission of Ontario


The project was developed by Hydro-Electric Power Commission of Ontario. Ontario Power Generation and Moose Cree First Nation are currently owning the project having ownership stake of 75% and 25% respectively.

The hydro reservoir capacity is 6.9 million cubic meter.

Harmon (Harmon Original) consists of 2 units of propeller turbines with 70MW nameplate capacity.

Development Status

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The project got commissioned in 1965.

Power Purchase Agreement

BC Hydro and Ontario Power Authority are the power offtakers from the project.

Contractors Involved

Kiewit Alarie Partnership was selected to render EPC services for the hydro power project.

Harmon (Harmon Expansion) is equipped with Andritz Hydro propeller turbine. The phase consists of 1 turbine.

Andritz Hydro supplied 1 electric generator for the Harmon (Harmon Expansion). The generator capacity is 87 MVA.

Voith Hydro Holding supplied electric generator(s) for the Harmon (Harmon Original).


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.