Aecon Group (“Aecon”) announced that Simcoe Battery Project General Partnership, in which Aecon Concessions is an equity partner, has executed an Energy Storage Facility Agreement with Ontario’s Independent Electricity System Operator (“IESO”) to build, own and operate the 150 MW / 1,200 MWh Simcoe Battery Energy Storage System Project (“Simcoe Battery Project”) in Norfolk County, Ontario.
Aecon Concessions, Six Nations of the Grand River Development Corporation (“SNGRDC”), the Mississaugas of the Credit Business Corporation (“MCBC”), Sitka Power; and NRStor will be ownership partners. They will provide electricity storage services to the IESO through a 20-year agreement, receiving capacity payments from the IESO for capacity services, as well as additional revenue from energy sold into the Ontario electricity grid and ancillary services. Aecon will also serve as the exclusive Engineering, Procurement and Construction (“EPC”) provider for the balance of plant works, and an EPC agreement with Aecon is expected to be finalised. The target to commence commercial operations is 2030.
“The Simcoe Battery Project will strengthen grid reliability and support the integration of renewable generation – helping to provide the resilient energy foundation and critical storage capacity required to support economic growth and meet Ontario’s growing electricity demand,” said Steve Nackan, Executive Vice President and President, Aecon Concessions. “As a diversified development, construction and investment partner, Aecon is strategically focused on opportunities across North America linked to power infrastructure, energy storage, grid expansion and resilience. Our involvement across the full lifecycle of this project is a strong example of our One Aecon approach – harnessing the expertise of our diverse operating sectors, and converting core development and construction capabilities into long-term concession opportunities.”
The Simcoe Battery Project complements Aecon Concessions’ ownership interest in the Oneida Energy Storage Project in Ontario, which has been successfully operating since May 2025 and was developed and delivered by Aecon, SNGRDC, MCBC, NRStor, and Northland Power, alongside construction partner Aecon-Six Nations (“A6N”) general partnership – a purpose-built team with Indigenous partnership at the forefront.
