08:20 AM EDT, 05/07/2025 (MT Newswires) -- Northland Power (NPI.TO) on Wednesday said its Oneida Energy Storage Project began commercial operations ahead of schedule and below budget.

The project, which the company says is Canada's largest operating battery energy storage facility, cost about $700 million, compared with an initial $800 million estimate. Located in Haldimand County, Ontario, the project has a 20-year capacity contract with Ontario's Independent Electricity System Operator.

Northland owns about 70% of Oneida, with the remainder held by Six Nations of the Grand River Development Corporation, NRStor, Aecon Concessions and Mississaugas of the Credit Business Corporation.

The company also said it remains focused on the successful and safe delivery of its construction projects, including the 1.1 GW Baltic Power offshore wind project in Poland and the 1.0 GW Hai Long offshore wind project in Taiwan.

"Today marks a major milestone for Northland and the Oneida project," said Northland's Chief Executive Officer Christine Healy. "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. Delivering this project ahead of schedule and under budget is a clear demonstration of Northland's capability to execute large-scale energy projects safely and effectively."