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250-MW Oneida Energy storage project scores $50-MIL cash injection

February 10, 2023 | By Anthony Capkun

Source: Six Nations of the Grand River Development Corp.

February 10, 2023 – The governments of Canada and Ontario announced they are “working together to build the largest battery storage project in in the country”—the 250-MW Oneida Energy storage project, which is being developed by the Six Nations of the Grand River Development Corp., Northland Power, NRStor and Aecon Group.

“This project is an example of what is possible when private and public companies, multiple levels of government, and their agencies work alongside a progressive Indigenous partner in pursuit of innovative solutions,” said Matt Jamieson, president & CEO, Six Nations of the Grand River Development Corp.

“I’m thrilled to see so many great partners come together to build this world-class project that will provide affordable, clean energy for generations to come,” said Premier Doug Ford. “With a growing population and—as we secure game-changing investments in our economy—our government is supporting innovative and bold energy solutions to meet the increasing demand for power, including battery storage and small modular reactors.”

Ottawa is providing a further $50 million in funding, reports the Ontario Premier’s Office, adding the Canada Infrastructure Bank has played a key role supporting project development, and is collaborating with the Oneida Energy storage project on an investment agreement.


The Oneida project will support the operation of Ontario’s clean electricity grid by drawing and storing electricity off-peak when power demand is low, and returning the power to the system at times of higher electricity demand. The project will begin operations in 2025 and provide enough power to meet the peak demand of a city the size of Oshawa (population 175,383 [2021]), reports the Premier’s Office.

SEE ALSO Oneida energy storage project one step closer to reality (March 6, 2021)

Ontario has directed the Independent Electricity System Operator to enter into a 20-year contract for the Oneida Energy storage project to support the growth of the province’s clean energy supply.

The project more than doubles the amount of energy storage resources on Ontario’s grid, and is expected to reduce emissions by between 2.2 to 4.1 million tonnes.

“This project will generate employment opportunities and significant revenue for our community, and we look forward to its completion,” said Mark Hill, Elected Chief, Six Nations of the Grand River.

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