Boralex and the Six Nations of the Grand River Development Corporation (SNGRDC) have commissioned the Hagersville Battery Energy Storage Park, Canada's largest operating facility of its kind. Featuring 334 Tesla Megapack 2XL units, the project provides 300 MW of power and 1,200 MWh of capacity near Lake Erie, supporting Ontario's grid reliability and renewable integration.
The Hagersville Battery Energy Storage Park, located in Hagersville, Haldimand County, on the Niagara Peninsula in southern Ontario along the north shore of Lake Erie, began commercial operations on March 3, 2026. Developed jointly by Boralex and SNGRDC over 30 acres, the facility utilizes 334 Tesla Megapack 2XL units to deliver 300 MW of power and 1,200 MWh of storage capacity for four hours of continuous grid support.
Selected in 2023 by the Ontario Independent Electricity System Operator (IESO) through its Expedited Long-Term Request for Proposals, the project includes a Community Benefit Agreement with Haldimand County and involved local workers from Six Nations via the A6N partnership, boosting regional employment and economic benefits. SNGRDC, now North America's largest Indigenous holder of battery storage assets, highlighted the initiative's role in environmental stewardship and self-sufficiency.
Matt Jamieson, President and CEO of SNGRDC, stated: "SNGRDC is pleased to once again collaborate with Boralex on a transformative project like the Hagersville Battery Energy Storage Park. This project builds on our rapidly expanding battery energy storage portfolio and further reinforces SNGRDC’s role as a leader in this field."
Sherri-Lyn Hill, Elected Chief of Six Nations of the Grand River, added: "The Hagersville Battery Energy Storage Park demonstrates the value of Indigenous participation in the renewable energy sector, and Six Nations of the Grand River is pleased to have been a key development partner in strengthening the energy grid."
Lesley Gallinger, President and CEO of IESO, noted: "Our continued work with Indigenous communities, municipalities, government, and project proponents like the Six Nations of the Grand River Development Corporation and Boralex is getting new electricity resources built in Ontario to help keep the province’s grid reliable and affordable."
Patrick Decostre, President and CEO of Boralex, described the commissioning as "a defining moment in our 2030 Strategic Plan," noting Boralex's position as Canada's leading battery storage operator. This follows the January 2026 commissioning of the 80 MW / 320 MWh Sanjgon BESS (formerly Tilbury) with Walpole Island First Nation. Upcoming projects include the 125 MW / 500 MWh Oxford BESS by Boralex and SNGRDC, plus SNGRDC's Elora BESS and Hedley BESS in 2027 using Canadian Solar's e-STORAGE SolBank 3.0 systems.
These developments highlight growing investments in battery storage to enhance Ontario's grid reliability, integrate renewables, and meet peak demand.
