New Nuclear at Wesleyville Project

Ontario Power Generation Inc. is proposing the construction of a new nuclear power plant in the Municipality of Port Hope, Ontario, within the traditional and treaty Territory of the Williams Treaties First Nations. As proposed, the New Nuclear at Wesleyville Project would provide up to 10,000 megawatts of new nuclear generating capacity and operate for 78 years. Several nuclear reactor technologies will be considered for the project. The project assessment and initial licence application review are being conducted in collaboration with the Canadian Nuclear Safety Commission.

Latest update

To respect the knowledge sharing memorandum of understanding with Michi Saagiig Anishinaabeg Nations of the Williams Treaties First Nations (MS-WTFNs), the information shared on this page is for the purposes of the integrated assessment for the New Nuclear at Wesleyville Project and has not been approved for use for other purposes. Any reproduction, distribution, or use of information about or provided by MS-WTFNs, for purposes other than those originally intended, requires prior permission from MS-WTFNs. To request permission please contact IAAC at wesleyville@iaac-aeic.gc.ca.

February 12, 2026  — The public comment period on the summary of the Initial Project Description and the funding application period closed on February 11, 2026. The Impact Assessment Agency of Canada and the Canadian Nuclear Safety Commission are currently reviewing all comments received to prepare the summary of issues. IAAC will post the summary of issues at a later date.


At a glance

Planning

Planning

In progress 30/180 days

Key documents

Impact Statement

Impact Statement

Not started 0/1095 days
Impact Assessment

Impact Assessment

Not started 0/300 days
Decision Making

Decision Making

Not started 0/30 days
Post Decision

Post Decision phase is an ongoing process

If approved, the project may proceed to construction as federal authorizations and permits are issued, and as conditions and other requirements are met.

Post Decision

Not started

Participate

Contacts

Media Relations
Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3
Email: media@iaac-aeic.gc.ca

New Nuclear at Wesleyville Project
Impact Assessment Agency of Canada
160 Elgin Street, 22nd Floor
Ottawa, Ontario K1A 0H3
Telephone: 343-596-8128
Email: wesleyville@iaac-aeic.gc.ca


Disclaimer

This map is for illustrative purposes. The markers represent the approximate locations based on available data. More than one marker may be identified for a given assessment.

  • Location

    • Port Hope (Ontario)

  • Nature of Activity

    • Nuclear Energy

  • Assessment Status

    In progress

  • Start Date

    2026-01-12

  • Proponent

    Ontario Power Generation Inc.

  • Authorities

    • Impact Assessment Agency of Canada

  • Assessment Type

    Planning Phase for Impact Assessment

  • Reference Number

    89802

Nearby assessments

...within 200 kilometres
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