Bath Energy Storage
Diversifying Ontario's energy grid with up to 200 MW of battery energy storage.*
* The Bath Energy Storage Project (the “Project”) is a Battery Energy Storage System (BESS) project with a planned Maximum Contract Capacity of up to 200 MW, subject to project design. Bath Energy Storage Corporation (the “Proponent”), a subsidiary of Northland Power Inc., is developing the Project.
Ontario’s Growing Demand for Energy
Ontario, once in energy surplus, is now facing a supply-demand gap that requires new resources to support the growing demand for electricity in the province. To address this challenge, the Independent Electricity System Operator (the IESO) has launched the Long-Term 2 Request for Proposals (the LT2 RFP) which includes a series of standalone procurements, referred to as windows. The procurements under the LT2 RFP will target the acquisition of up to 14 TWh of annual generation from eligible energy producing resources and up to 1,600 MW of eligible capacity resources, such as battery energy storage. For the first LT2 RFP window, the target will be 3 TWh for the energy stream and 600 MW for the capacity stream.
Bath Energy Storage Corporation (the “Proponent”), a subsidiary of Northland Power Inc., is developing a Battery Energy Storage System (BESS) project (the “Project”) in Loyalist Township in response to the LT2 RFP issued by the Government of Ontario through the IESO.
About the Project
The Bath Energy Storage Project (the “Project”) is a Battery Energy Storage System (BESS) project with a planned Maximum Contract Capacity of up to 200 MW, subject to project design.
BESS is a type of energy storage system that uses batteries to store and distribute electricity. BESS collect surplus electricity from the grid during off-peak hours, store the electricity in a battery, and then discharge the electricity back to the grid during peak hours. The Bath Energy Storage project will utilize Lithium-Ion-Phosphate (LFP) battery technology. LFP batteries have certain safety characteristics that make them leading technology option for BESS projects.
Located within Loyalist Township, the Project will have a footprint of up to approximately 20 acres and is anticipated to consist of battery storage enclosures, electrical inverters and transformers, internal access roads, electrical and communication cabling, a 230 kV transmission station (i.e., substation), other necessary electrical and infrastructure, and safety systems.
The Project will connect to Hydro One Networks Inc.’s transmission infrastructure adjacent to the property. It aims to enhance the electrical transmission system in the region and across Ontario by addressing weak points in capacity, efficiency, and reliability. The facility will charge during periods of reduced demand and discharge during peak demand times, thereby providing value for Ontario’s electricity system.
Project Location & Conceptual Project Layout
Preliminary Project Timeline
Q2 2025: Final LT2 RFP Capacity Documents issued by IESO on June 27, 2025
Q2-4 2025: Project design and stakeholder consultation
Q4 2025: LT2 RFP Capacity Bid Submission deadline December 18, 2025
Q2 2026: Anticipated LT2 RFP Capacity Contract Award
2027: Proposed Financial Close and Start of Construction
2030: Proposed Commercial Operations
*Note: The project timeline is subject to change based on the IESO procurement schedule and project development activities.
Public Open House Details
In line with the requirements of the IESO LT2 RFP, Loyalist Township and the Class EA for TF, Bath Energy Storage Corporation will be holding an in-person Public Open House with details noted below:
In-person Public Open House
Monday September 15, 2025
6:00 PM – 8:00 PM
Loyalist Golf and Country Club
1 Loyalist Blvd, Bath, ON K0H 1G0
A presentation by the Project Team will commence at 7:00 PM
Notice of Public Open House and Study Commencement
Contact Us!
For further information related to the Bath Energy Storage Project please contact us. For further information on Northland Power Inc., please visit our website: https://www.northlandpower.com