Project Overview

Plus Power, LLC (Plus Power), operating under Armour Hill Energy Storage LP, is developing a state-of-the-art battery energy storage system with a nameplate capacity of 175 MW to provide clean, firm capacity to Ontario’s electricity system. The Armour Hill Energy Storage (Armour Hill) project will enhance grid reliability by drawing and storing energy from the grid during off-peak periods and releasing it back to the grid when energy demand is at its highest. The Armour Hill project is expected to provide significant benefits to Ontario’s ratepayers by reducing the need and cost associated with using gas-fired power plants during times of peak demand as well as helping to clean Ontario’s electricity system by optimizing the use of renewable energy resources.

Plus Power is a qualified applicant for the Ontario Independent Electricity System Operator (IESO) Long-Term 1 Request for Proposals (RFP) process. Plus Power,, operating under Armour Hill Energy Storage LP, intends to submit a proposal to the IESO in December of 2023 for the Armour Hill project for a long-term capacity contract. If successful, Plus Power will proceed with the the planning and environmental approvals, engineering, and construction of the project, with the objective of bringing the project online by 2027.  We will work closely with IESO, the Township of Selwyn and the community throughout the development, construction and operations and maintenance of the project.

Project Location 

Proposed Site Layout