Project overview 
Atura Power, a subsidiary of Ontario Power Generation (OPG), is planning to expand the electricity generating capacity of its Halton Hills Generating Station (HHGS) in the Town of Halton Hills, Ont. The proposed Halton Hills Generating Station Expansion project is located at the existing HHGS. The expansion will add a hydrogen-ready simple cycle combustion turbine generator unit that will provide up to 265 megawatts (MW) of additional electricity output to Ontario’s power grid.
Building capacity for Ontario’s electricity grid
After more than a decade of strong supply, Ontario is entering a period of emerging electricity system needs, driven by increasing demand, the refurbishment of existing generating assets, as well as expiring contracts for other electricity-producing facilities.
To prepare for future electricity demands and support a reliable grid for Ontarians, the Independent Electricity System Operator (IESO) has initiated Long-Term Request for Proposals (LT1 RFP) to secure new electricity resources that could be in service by 2027-2028, including new natural gas facilities.
The proposed Halton Hills Generating Station Expansion project will increase Ontario’s electricity generation, support grid reliability, and help advance Ontario’s path to a net-zero future.
Environmental permits and approvals, including an Environmental Assessment, will be required to construct this potential project.
Project details
Proponent legal name: Atura Power
Location: Town of Halton Hills, Ont.
Generating technology: Hydrogen-ready Simple Cycle Combustion Turbine Generator Unit
Maximum nameplate capacity: Up to 265 MW
Public & Indigenous Community Engagement
Atura Power is committed to engaging Indigenous communities, municipalities, the public as well as other potentially interested stakeholders throughout this project. The Halton Hills Generating Station Expansion Public & Indigenous Community Engagement Plan describes the engagement activities that Atura Power will undertake during the LT1 RFP process in accordance with IESO requirements.
Indigenous communities, municipalities, regulatory agencies, local interest groups and the broader public will be notified when the Environmental Assessment process begins.
We want to hear from you
We invite you to attend an upcoming virtual public community meeting to learn more about the project.
Please access the Contact Us form if you have any questions or accommodation needs. Meeting materials will be available on this webpage following the meeting.
If awarded an LT1 contract by the IESO, Atura Power will complete an Environmental Assessment and obtain the necessary permits and approvals prior to construction. Indigenous and stakeholder engagement activities remain a priority and will continue during the next phase of the project.
Project documents
Project documents will be posted here as they became available. Please let us know if you require an alternate format for any documents posted through the Contact us form below.
Contact us
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.