Ontario Power Generation (OPG) has completed development of the $2.6bn Lower Mattagami hydroelectric project, in co-ordination with Moose Cree First Nation from Ontario, Canada.

The redevelopment project involved upgrades to OPG’s four pre-existing hydropower stations. These were Little Long, Smoky Falls, Harmon, and Kipling, located along the Lower Mattagami River.

The four stations are around 70km north-east of Kapuskasing and almost 150km upstream of Moose Factory and Moosonee.

Built in 1931, the Smoky Falls facility had a power generation capacity of 52MW. This has now been increased to 267MW.

"The Lower Mattagami Project will provide clean, reliable, and affordable electricity for Ontarians."

Power generation capacities of the Little Long, Harmon, and Kipling stations have been increased to 205MW, 220MW, and 232MW, respectively.

Moose Cree chief and council had been co-ordinating with OPG for the project from the initial stages of approvals.

The partnership with the First Nation was formed in 2009.

According to the Amisk-oo-Skow agreement, the Moose Cree First Nation will retain a 25% stake in the Lower Mattagami project.

Ontario Minister of Energy Bob Chiarelli said: "The Lower Mattagami Project will deliver long-term results for our electricity system, while providing clean, reliable and affordable electricity for Ontarians."

Image: The project involved the redevelopment of OPG’s four existing hydro stations on the Mattagami River. Photo: courtesy of Ontario Power Generation.