Dobbin Energy Storage
Diversifying Ontario's energy grid with up to 200 MW of battery energy storage.*
* The Dobbin 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. Dobbin 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.
Dobbin Energy Storage Corporation (the “Proponent”), a subsidiary of Northland Power Inc., is developing a Battery Energy Storage System (BESS) project (the “Project”) in the Township of Selwyn in response to the LT2 RFP issued by the Government of Ontario through the IESO.
About the Project
The Dobbin 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 Dobbin Energy Storage project will utilize Lithium-Iron-Phosphate (LFP) battery technology. LFP batteries have certain safety characteristics that make them leading technology option for BESS projects.
Located within the Township of Selwyn, the Project will have a footprint of up to approximately 35 acres (i.e., 14.2 hectares) 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 interconnect to Hydro One Networks Inc.’s existing Dobbin Transformer Station located southwest of the Project via a 230 kV connection line owned by the Project. Routing to the Dobbin Transformer Station is anticipated to require a crossing of Fifes Bay and Lily Lake roads.
The Project 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.
Conceptual Project Layout*
*Note: Exact layout and sizing of the infrastructure will be determined through additional engineering studies, equipment procurement, and completion of the permitting process.
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.
Project Documents
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For further information on Northland Power Inc., please visit our website: https://www.northlandpower.com