Tesla’s Megapack battery systems are rapidly becoming the foundation of Canada’s grid-scale energy storage push, and Ontario is leading the charge. The latest example is the newly commissioned Sanjgon Battery Energy Storage facility in Lakeshore, Ontario, which adds another Megapack-powered project to a growing list of large-scale installations in Canada.
The Sanjgon project delivers 80 MW of power with 320 MWh of storage capacity, allowing it to supply electricity to the grid at full output for up to four hours. The site is built around 89 Tesla Megapack 2XL units, designed to provide fast-response capacity, smooth peak demand, and improve grid reliability as Ontario brings more intermittent renewable energy online.
Developed by Boralex in partnership with Walpole Island First Nation, Sanjgon marks Boralex’s first operational battery energy storage system (BESS) in North America.
Beyond its technical capabilities, the project reflects a broader shift in how energy infrastructure is developed in Ontario. A community benefit agreement with the Municipality of Lakeshore will see $1,000 per megawatt paid annually over the life of the project to support local initiatives, reinforcing the idea that grid-scale storage can deliver both system-wide and local value.
Sanjgon is also just one piece of a much larger storage buildout underway in the province. With Boralex’s Hagersville Battery Energy Storage Park—rated at 300 MW / 1,200 MWh—set to come online in the coming weeks, the company will soon operate 380 MW of installed battery storage capacity in Canada.
An additional project in Oxford County is expected to begin construction shortly, further expanding Ontario’s Megapack-powered footprint.
Taken together, these projects highlight how quickly Tesla’s Megapack platform is scaling across Canada. That trend was cemented earlier with the Oneida Energy Storage Project, developed by Northland Power in Haldimand County. At 250 MW / 1,000 MWh and powered by 278 Tesla Megapacks, Oneida is currently Canada’s largest battery storage facility and one of the largest in the world.
