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Tesla Megapacks are now live at a major new battery energy storage system (BESS) in Ontario, marking another milestone for grid-scale storage in Canada and Tesla’s rapidly growing energy business.
According to details shared this week, a $90 million Tesla Megapack-powered battery energy storage system has officially entered commercial operation in the Municipality of Lakeshore, Ontario. Known as the Sanjgon Battery Energy Storage facility, the project delivers 80 MW of power with 320 MWh of capacity — enough to supply four hours of continuous full-power electricity to the grid when demand spikes.
The project is owned and operated by renewable energy company Boralex, in partnership with Walpole Island First Nation. It represents Boralex’s first operational energy storage facility in North America. Previously referred to as the Tilbury Battery Storage Project, the site was renamed Sanjgon to reflect the collaboration with the local First Nation.
The facility relies on 89 Tesla Megapack 2XL units, Tesla’s flagship utility-grade energy storage solution. Designed for grid-scale applications, Megapacks store large amounts of electricity and dispatch it precisely when needed, helping utilities stabilize the grid while integrating intermittent renewable sources like wind and solar. Tesla’s Megapack systems have become a cornerstone of large battery projects worldwide, particularly across North America and Australia.
“The Sanjgon Battery Energy Storage facility marks a significant step toward a cleaner, more reliable energy future,” said Leela Thomas, Chief of Walpole Island First Nation, highlighting the project’s long-term benefits for both the community and the broader energy system.
With Sanjgon now operational and the Hagersville Battery Energy Storage Park expected to come online in the coming weeks, Boralex aims to reach 380 MW of installed storage capacity in Canada. That would reportedly make the company the largest battery storage operator in the country.
The project also underscores Tesla’s accelerating momentum in utility-scale storage. In recent months, the company has secured massive Megapack orders in the U.K. and Australia, while unveiling next-generation products like Megapack 3 and the even larger Megablock.
Megapack 3 increases usable energy capacity to 5 MWh per unit and features a redesigned architecture aimed at faster installation and improved long-term reliability. Tesla has also already started receiving orders for Megablock, with the technology set to debut at a recently announced $220 million BESS in Australia. The company’s energy division reported record installations of 14.2 GWh worth of energy storage products in Q4 2025.
As grids worldwide struggle with rising demand and the transition to renewables, projects like Sanjgon show how large-scale battery storage is quickly becoming essential infrastructure rather than a future concept.
