Hagersville Energy Storage Project Commissioned
A Record-Breaking Battery Facility in Ontario
Located in Haldimand County, the Hagersville Energy Storage Project officially entered commercial operation with an installed capacity of:
- 300 MW of power
- 1,200 MWh of energy storage
- Four hours of full-power discharge
This makes Hagersville the largest operational battery storage site in the country, capable of supplying electricity when demand is high and absorbing excess energy when demand is low.
Developed by Boralex alongside its long-standing partner, the Six Nations of the Grand River Development Corporation, the project reflects a shared vision of sustainable development and long-term value creation for local communities.
Why Storing Energy in Hagersville Matters ?
This project is more than just a record-breaking installation. It represents:
- A critical step in Ontario’s energy transition, improving grid reliability and resilience.
- A model for sustainable partnerships, developed in collaboration with an Indigenous community.
- An award-winning project, recognized as “Clean Energy Innovation Project of the Year” by the Canadian Renewable Energy Association (CanREA).
How Energy Storage Works?
An Advanced Technology for Grid Stability
Battery energy storage systems act like a large-scale rechargeable battery for the grid. They :
- Store electricity when supply exceeds demand
- Release electricity when demand increases
- Respond within seconds to grid needs
Tesla Megapack 2XL Technology
Hagersville uses 334 Tesla Megapack 2XL units, delivering 1,200 MWh of storage capacity—enough for four hours of continuous full-power supply. Like the recently launched Sanjgon storage facility (formerly Tilbury), this system stores energy during low-demand periods and releases it during peak demand.
What are Hagersville BESS Benefits for Ontario’s Grid
- Grid stabilization by balancing supply and demand.
- Enhanced reliability during fluctuations and unexpected events.
- Greater renewable integration, reducing variability and maximizing renewable energy use.
Executive Insights
Our Approach to Indigenous Partnerships
The Hagersville project was co-developed with Six Nations of the Grand River Development Corporation, a trusted partner for many years.
This partnership is built on :
- Mutual respect
- Long-term collaboration
- Shared economics and social benefits
By working closely with Indigenous partners, we aim to ensure that renewable energy projects contribute positively to local communities while supporting broader sustainability goals
Conclusion
The commissioning of the Hagersville Energy Storage Project marks an important step toward a more reliable, flexible, and sustainable electricity system in Ontario and across Canada.
By combining advanced battery technology, strong partnerships, and a long-term vision for renewable energy, Hagersville demonstrates how energy storage can support both today’s grid and tomorrow’s transition.
- Want to learn more about how energy storage is shaping the future of electricity? Explore Boralex’s energy storage projects and discover how we’re helping build a more resilient energy system for communities across North America.
Boralex: Canada's Energy Storage Leader
With Hagersville now online and Sanjgon (formerly Tilbury) recently launched, Boralex's total operationnal storage capacity has reached:
- 380 MW of power
- 1,520 MWh of energy storage
This positions us as Canada's largest battery storage operator, with a growing portfolio supporting grids across the country. Looking ahead, we continue to expand our footprint in storage systems. Upcoming projects like Oxford, planned for 2026, will further strengthen our leadership in North America’s energy transition