The Simcoe Battery Project General Partnership Inc. has announced that it signed an Energy Storage Facility Agreement with Ontario’s Independent Electricity System Operator (IESO) to create, own, and manage the 150 MW / 1,200 MWh Simcoe Battery Energy Storage System Project (“Simcoe Battery Project”) in Norfolk County, Ontario.
The partnership includes Aecon Concessions, Six Nations of the Grand River Development Corporation (SNGRDC), the Mississaugas of the Credit Business Corporation (MCBC), Sitka Power Inc., and NRStor as ownership partners. They will provide electricity storage services to IESO through a 20-year agreement. This means they will receive capacity payments from IESO for these services and additional income from energy sold into the Ontario electricity grid and related services.
Aecon Group will also act as the sole Engineering, Procurement and Construction (“EPC”) provider for the remaining plant work, with an EPC agreement expected to be finalized soon. The goal is to start commercial operations by 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, EVP and president of 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 adds to Aecon Concessions’ ownership interest in the Oneida Energy Storage Project in Ontario. This project has been running successfully since May 2025 and was developed by Aecon along with SNGRDC, MCBC, NRStor, Northland Power, and their construction partner Aecon-Six Nations (“A6N”), a team built with Indigenous partnership at its core.
Featured image: (Aecon)
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