Northland Power Inc. announced that the Oneida Energy Storage Project, a 250-megawatt battery storage facility in Ontario, has entered commercial operation. The project, completed earlier than planned and under budget, is currently the largest operational battery energy storage system in Canada.
Located in Haldimand County, Ontario, the facility is designed to provide up to 1,000 megawatt-hours of energy storage and aims to support grid reliability and stability in the province. It is Northland’s first energy storage project to reach operational status in the Canadian market.
“Today marks a major milestone for Northland and the Oneida project,” said Christine Healy, president and chief executive officer of Northland Power. “Oneida represents a pivotal step in our strategy to develop and operate battery storage facilities. A first-of-its-kind in Canada, this facility supports grid stability and reliability in Ontario.”
The final cost of the project was approximately US$700 million, below the initial estimate of US$800 million at the time of financial close in 2023. The facility operates under a 20-year capacity agreement with Ontario’s Independent Electricity System Operator (IESO).
Northland holds a 70% ownership stake in the project. The remaining interest is shared among Six Nations of the Grand River Development Corporation, NRStor Inc., Aecon Concessions, and the Mississaugas of the Credit Business Corporation.
