Boralex and Six Nations of the Grand River Development Corporation Commission Canada's Largest Operating Battery Storage Facility

Executive Summary

• Boralex Inc. and Six Nations of the Grand River Development Corporation (SNGRDC) announced commercial commissioning of the Hagersville Battery Energy Storage Park, Canada’s largest operating battery storage facility at 300 MW/1,200 MWh.
• The project brings Boralex’s total installed storage capacity to 380 MW/1,520 MWh, making it the largest battery storage operator in Canada, and raises SNGRDC’s total installed storage to 550 MW/2,200 MWh.
• Hagersville’s commissioning supports Ontario grid stability, enhances renewable integration, creates local Indigenous employment, and positions both companies as leaders in large‑scale energy storage.

Key Details

• Facility Capacity: 300 MW power output with 1,200 MWh of stored energy (four‑hour full‑power duration).
• Technology: 334 Tesla Megapack 2XL lithium‑ion battery units fully integrated on site.
• Total Boralex Storage Portfolio: Now 380 MW/1,520 MWh across Canada after adding Hagersville and the recently launched Sanjgon Battery Energy Storage project.
• Total SNGRDC Storage Portfolio: Now 550 MW/2,200 MWh; second operational battery storage facility for SNGRDC with four additional projects under development, targeting a cumulative 1 GW of capacity (largest Indigenous holder of battery assets in North America).
• Community & Economic Impact: Construction partner A6N General Partnerships (majority‑owned by SNGRDC) delivered key civil works, providing employment to Six Nations labourers; project supported by a Community Benefit Agreement with Haldimand County.
• Recognition: Awarded “Innovative Clean Energy Project of the Year” by the Canadian Renewable Energy Association (CanREA).
• Future Projects: Upcoming 125 MW/500 MWh Oxford battery storage project slated to begin construction shortly; additional SNGRDC‑Boralex storage projects in pipeline.
• Grid Benefits: Enhances Ontario Independent Electricity System Operator (IESO) reliability targets, stabilizes the grid, and enables higher penetration of intermittent renewable generation.

Notable Quotes

• “SNGRDC is pleased to once again collaborate with Boralex on a transformative project… delivering cost savings for Ontario ratepayers and meaningful environmental benefits.” – Matt Jamieson, President & CEO, SNGRDC
• “The Hagersville Battery Energy Storage Park demonstrates the value of Indigenous participation in the renewable energy sector…” – Sherri‑Lyn Hill, Elected Chief, Six Nations of the Grand River
• “This project strengthens Ontario’s energy grid… supporting continued economic growth.” – Lesley Gallinger, President & CEO, IESO
• “Hagersville is a powerful example of what’s possible when strong partnerships drive innovation…” – Robin Deveaux, EVP & GM, North America, Boralex

Materiality: Material – Positive (significant operational milestone, expands capacity, enhances grid reliability, and provides notable community/economic benefits).