July 25, 2025 – With 278 lithium-ion battery units—each weighing more than 84,000 lb—now drawing and storing power from Ontario's electricity grid, the Oneida Energy Storage Project has officially entered commercial operation, becoming the largest battery energy storage facility in operation in Canada, and among the largest globally.
[PDF Version]
There are three main types of energy storage currently commercially available in Canada: Storage is playing an increasingly important role in the electricity system by improving grid reliability and power quality, and by complementing variable renewable energy sources (VRES) like wind and solar.
In this global context, Canada is well-placed to be a leader in the development and deployment of energy storage technologies that will drive the future of the energy sector. Canada has an abundance of natural resources, a clean electricity grid, and an established innovation ecosystem for energy.
Why is energy storage important in Canada?
Energy storage solutions play a crucial role in stabilising Canada's energy grid and reducing greenhouse gas emissions. By storing renewable energy, like wind and solar, these systems ensure electricity's reliable availability during peak demands or when generation dips.
In Calgary, advanced battery storage systems combined with solar power enable efficient off-grid solutions. These innovations underscore a commitment to sustainable energy storage options, driving Canada's energy transition. I can see major trends redefining energy storage in Canada, with battery storage systems at the forefront.
Canada will need a 1,500 per cent increase in battery-based energy storage capacity by 2030 to absorb the expected growth in electricity demand, according to Bloomberg New Energy Finance (BNEF), an industry research group. 1. HydroOne transmission line connecting Oneida to Ontario's electricity grid.
Canada is lagging behind many other countries in building a network of grid-connected battery storage facilities. Even after Oneida is switched on, the country will rank tenth in the world for storage capacity, far behind market leaders China, the United States and the United Kingdom.