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- calendar_today November 6, 2026
Ontario Delivers New Battery Storage Projects
The Ontario government has announced the completion of three major battery energy storage projects in Vaughan and Guelph, marking a significant step toward improving the province's energy reliability. Delivered on time and on budget, these projects add a combined 80 megawatts (MW) of capacity to the energy grid, enough to power approximately 80,000 homes during periods of peak demand.
Strengthening Growing Communities
Vaughan and Guelph are among Canada's fastest-growing municipalities. With Vaughan expecting to reach nearly 576,000 residents and over 354,000 jobs by 2051, and Guelph anticipating a 40 percent population increase over the next three decades, reliable electricity is crucial for supporting expected growth in homes, businesses, and employment opportunities.
Details of the New Energy Storage Facilities
The three new Battery Energy Storage Systems (BESS) are:
- Vaughan 3 Energy Storage 1 LP (Vaughan 3): 40 MW/160 MWh facility located in Vaughan.
- Vaughan 1E Energy Storage 1 LP (Vaughan 1E): 20 MW/80 MWh facility also in Vaughan.
- Arlen Energy Storage 1 LP (Arlen): 20 MW/80 MWh facility situated in Guelph.
All three facilities are built on existing municipal energy infrastructure, helping these expanding cities keep pace with rising energy demand.
Largest Battery Storage Fleet in Canada
The projects were delivered by Alectra Energy Solutions, part of Alectra Inc., an established electric utility in Southern Ontario. These new installations were awarded through the Independent Electricity System Operator's (IESO) Expedited Long-Term 1 (E-LT1) procurement—a competitive process launched in 2022. The E-LT1 initiative is part of the province's strategy to quickly secure additional battery capacity to meet both immediate and future system needs.
Three years ago, Ontario had only 228 MW of energy storage, mainly from a single pumped storage facility. With these new projects and recent procurements, the province has now secured nearly 3,000 MW of battery storage capacity, marking the largest such procurement in Canadian history and expanding Ontario's active battery storage fleet to five times its previous capacity.
Meeting Ontario’s Rising Energy Demand
Driven by rapid population growth, historic investments in manufacturing, and increased electrification, Ontario’s electricity demand is forecasted by the IESO to rise by as much as 90 percent by 2050. Battery storage plays a critical role in protecting Ontario’s energy supply, capturing electricity when demand is low and releasing it when homes and businesses need it most. These investments also support the province's broader goals of affordability and energy reliability, as well as the Energy for Generations long-term energy strategy.
Ontario’s Integrated Approach to Energy Security
In response to rising demand and external challenges such as U.S. tariffs, Ontario is pursuing an integrated strategy that includes expanding nuclear generation, upgrading transmission infrastructure, and growing its battery storage capacity. The collaborative approach is designed to provide certainty for municipalities, Indigenous communities, businesses, and industry partners invested in Ontario’s future.
Source: news.ontario.ca.
