Nanticoke Battery Energy Storage System
Project Overview
Atura Power, a subsidiary of Ontario Power Generation (OPG), is proposing to construct the Nanticoke Battery Energy Storage System (BESS), a battery energy storage project in Haldimand County, Ont. The proposed Nanticoke BESS is located north of the former OPG-owned and operated Nanticoke Generating Station, between Haldimand Rd. 55 and South Coast Dr.
Once constructed, the system will be able to store and output up to 300 megawatts (MW) of electricity for up to eight hours to Ontario’s electricity grid.
Learn more about battery energy storage systems at Atura Power.
Responding to Ontario’s growing electricity demand
Ontario is entering an accelerated pace of electricity demand growth primarily driven by industrial growth, energy-intensive data centres, an increasing population and electrification. According to the latest annual forecast from the Independent Electricity System Operator (IESO), electricity demand in Ontario is anticipated to grow 75 per cent by 2050.
To prepare for future electricity demands and support a reliable grid for Ontarians, the IESO has initiated a Long-Term 2 Request for Proposals (LT2 RFP) to secure new electricity resources that could be in service in the 2030s and beyond.
The proposed Nanticoke BESS will increase Ontario’s electricity storage, support grid reliability, and help advance Ontario’s path to a low-carbon energy future. Energy storage facilities store surplus power in periods of low demand, generally during the evening. The energy can then be released back into the system when electricity demand is high, usually during the daytime.
Project Details
| Project Name: | Nanticoke Battery Energy Storage System |
|---|---|
| Proponent: | Portlands Energy Centre L.P. (doing business as Atura Power) |
| Location: | Haldimand County, Ont. |
| Generating Technology: | Battery Energy Storage System |
| Maximum Potential Contract Capacity: | Up to 300 MW |
Committed to Engagement
Atura Power is committed to engaging with Indigenous communities, municipalities, the public, regulatory agencies, as well as other interested stakeholders throughout the LT2 process and beyond.
We invite you to attend an upcoming Public Information Centre (PIC) to learn more about the proposed Nanticoke BESS. Please note that both events will provide the same information and provide flexibility for those interested in attending.
| Nanticoke BESS - Public Information Centre 1 | |
|---|---|
| Date: | June 3, 2025 |
| Time: | 3 to 7 p.m. EDT |
| Location: | Nanticoke Community Centre 38 Rainham Rd. Nanticoke, Ont. N0A 1L0 |
| Nanticoke BESS - Public Information Centre 2 | |
|---|---|
| Date: | July 8, 2025 |
| Time: | 3 to 7 p.m. EDT |
| Location: | Nanticoke Community Centre 38 Rainham Rd. Nanticoke, Ont. N0A 1L0 |
Please access the Contact Us form if you have any questions or accommodation needs. Materials will be available on this webpage following the first Public Information Centre.
Understanding the Process
Atura Power is proposing the Nanticoke BESS through the IESO LT2 procurement process. Proposals for projects in the ‘capacity’ stream are due to the IESO in December 2025.
If awarded an LT2 contract by the IESO, Atura Power will complete an environmental assessment and obtain the necessary permits and approvals prior to construction. Engagement with Indigenous communities, local community members and other interested parties will continue through each phase of the project and beyond.
Timeline
Atura Power’s preliminary timeline for the proposed project is as follows:
Project Documents
Project documents will be posted as they become available. Please let us know if you require an alternate format for any documents posted through the Contact Us form below.
Comments and information regarding this project are being collected in accordance with the Freedom of Information and Protection of Privacy Act. With the exception of personal information, all comments received will become part of the project record.
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