HAGERSVILLE, Ontario — February 27, 2026 — Leads & Copy —
Boralex Inc. and Six Nations of the Grand River Development Corporation (SNGRDC) have announced the commercial commissioning of the Hagersville Battery Energy Storage Park, the largest operating battery energy storage facility in Canada.
The project has a capacity of 300 MW / 1,200 MWh. Boralex and SNGRDC say the project represents a significant milestone in Ontario’s energy transition.
The Hagersville project was co-developed by SNGRDC and Boralex. The project was recently recognized as the “Innovative Clean Energy Project of the Year” by the Canadian Renewable Energy Association (CanREA).
Throughout the project, Boralex and SNGRDC say they prioritized opportunities to involve local Six Nations laborers. In collaboration with construction partner Borea, A6N General Partnerships, which is majority-owned by SNGRDC in partnership with Aecon, was brought in to deliver key civil works on site.
According to the press release, the Hagersville facility brings Boralex’s total installed storage capacity to 380 MW / 1,520 MWh and SNGRDC’s total installed storage capacity to 550 MW / 2,200 MWh.
The project includes 334 Tesla Megapack 2XL units which are fully integrated, utility-scale lithium-ion battery systems.
Boralex and SNGRDC say the Hagersville facility plays a critical role in stabilizing the grid and maximizing renewable energy integration, by allowing flexibility to match intermittent renewables with the required demand.
With the commissioning of Hagersville and the recently launched Sanjgon Battery Energy Storage, Boralex’s total operational storage capacity now reaches 380 MW / 1,520 MWh.
SNGRDC has an additional four projects currently under development. With a total of 1 GW of storage capacity, SNGRDC says they are the largest Indigenous holder of battery storage assets in North America. The 125 MW / 500 MWh Oxford project is expected to begin construction shortly.
An official inauguration event is planned for Spring 2026.
Matt Jamieson, President and CEO of Six Nations of the Grand River Development Corporation, said the project has created employment opportunities for Six Nations band members through A6N during construction, while delivering cost savings for Ontario ratepayers and environmental benefits.
Sherri-Lyn Hill, Elected Chief of Six Nations of the Grand River, said Six Nations of the Grand River Development Corporation continues to pursue strategic investment opportunities that support economic self-sufficiency for the community.
Shelley Bentley, Mayor of Haldimand County, said the result is an energy solution that strengthens Ontario’s grid and respects the character and needs of the region.
Lesley Gallinger, President & CEO, Independent Electricity System Operator, said their continued work with Indigenous communities, municipalities, government, and project proponents is getting new electricity resources built in Ontario to help keep the province’s grid reliable and affordable.
Bobbi Ann Brady, MPP for Haldimand – Norfolk, said the project strengthens Ontario’s energy grid and reflects the power of collaboration between industry leaders and Indigenous communities.
Patrick Decostre, President and CEO of Boralex, said the project demonstrates their ability to deliver transformative infrastructure that stengthens grid reliability and accelerates the integration of renewable energy across North America.
Robin Deveaux, Executive Vice President and General Manager, North America, said the project reflects technical excellence and collaboration with Indigenous partners and local businesses.
Source: Boralex
