February 28, 2025
18 min read

Neighbours - Spring 2025

Pickering and Darlington Nuclear Generating Stations
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Join us for March Break Fun

2024 OPG Sponsored Skate
2024 OPG Sponsored Skate

Looking for something fun to do this March Break?

Mark your calendars for fun, free, and educational activities at OPG’s annual March Break Blitz! Whether you enjoy science, wildlife, or swimming and skating, OPG has an action packed lineup of programs running from March 10 - 14 throughout the Durham Region.

The March Break program is one of the many opportunities you have to meet with OPG employees, discuss our operations and projects and to strengthen the valuable relationships and partnerships we have established in the communities we serve.

Visit opg.com/durham to see where staff from OPG’s nuclear stations will be next.

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Darlington Nuclear Relicensing

Aerial photo of Darlington Nuclear Generating Station
Aerial photo of Darlington Nuclear Generating Station

As part of the routine licensing process for a nuclear power station, last year, OPG submitted an application to the Canadian Nuclear Safety Commission (CNSC) to renew the DNGS Power Reactor Operating Licence. The application requests a 30- year licence renewal from Dec. 1, 2025 to Nov. 30, 2055.

The CNSC will hold a two-part public hearing on March 26 and June 24–26, 2025 to consider OPG’s application. The application highlights Darlington’s strong safety and operational performance and significant achievements during the current licence term. The station is recognized amongst the top- performing nuclear stations in the world with a strong track record of reliability and exceptional safety records.

Interested in participating? Here are some of the ways you can engage with us about relicensing, operations, and projects:

  • Visit our website (opg.com)
  • Attend a Public Information Session: virtual and in-person sessions will take place in March and April.
  • Visit our website for more details.
  • Stop in at our Public Information Centre: open Monday - Friday (9 a.m. - 3:30 p.m.)
  • Give us a call: 905-623-7122/Toll Free: 1-800-461-0034
  • Visit us at one of many upcoming community events across Durham Region (opg.com/durham)
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Safe and steady progress – the Darlington New Nuclear Project

Late last year under the current site preparation licence, site preparation activities were completed safely and on schedule in support of construction of the first of four planned Small Modular Reactors at the Darlington new nuclear site. In January of 2025, OPG, Rightsholders, stakeholders, and members of the public participated in Part 2 of the CNSC public hearing to consider OPG’s application for a Licence to Construct (LTC).

Over the course of five days, our team. heard from a broad range of stakeholders on topics including reactor design, safety, Indigenous relations, and public engagement. The Commission’s decision on issuance of the licence is anticipated this spring. If granted, construction activities would begin promptly and are expected to continue to the end of 2028.

For more information on the project, including the detailed timeline, visit opg.com/newnuclear.

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Announcement by Minister of Energy
Announcement by Minister of Energy

Powering Possibilities at Wesleyville

To help meet rapidly rising energy needs, forecasted to increase by 75 per cent over the next 25 years, the Ontario government has asked OPG to explore opportunities for new generation at its Wesleyville site.

The announcement by the Minister of Energy and Electrification Ontario, was made in January following a formal expression of interest from the Municipality of Port Hope and a willingness to enter discussions from the Williams Treaties First Nations (WTFNs).

The site has been zoned and maintained for future electrical generation for more than 50 years, and based on early assessments, has the potential to power the equivalent of 10 million homes with clean, non-emitting nuclear generation (based on up to 10,000 megawatts (MW)).

The potential benefits to local and surrounding communities are substantial; according to the Conference Board of Canada:

  • New nuclear at Wesleyville is expected to support about 1,700 new jobs in Port Hope, representing on average a 15-20 per cent boost to local employment levels.
  • Increased co-located industry, supply chain spending, and municipal property taxes from the station will drive economic growth. Over its lifespan the project will generate $10.5 million in municipal tax revenues annually for Port Hope.
  • The Wesleyville project will boost Port Hope’s GDP by $65.7 billion and Ontario’s GDP by $235.5 billion over its lifespan.

As an important first step, OPG is engaged in conversations with the Municipality, local Rightsholders, stakeholders, site neighbours, and surrounding communities to share information about the project and provide ongoing opportunities to connect with the OPG team.

More: opg.com/wesleyville

DNNP Chronology

Project Status: UnderwayStart Date: 2006Expected Completion: TBD

Click on 🛈 below to read more information on milestones and related documents.

2006
May 2006
Ontario directs OPG to initiate the federal approvals
DNNP Chronology
May 2006
Ontario directs OPG to initiate the federal approvals
  • The Government of Ontario, OPG’s shareholder, directs OPG to initiate the federal approvals process for new nuclear generating units in response to recommendations from the Ontario Power Authority’s Integrated Power System Plan.
  • The Plan calls for investment in new nuclear generation capacity in order to maintain Ontario’s nuclear generating capacity at 14000 MWe, consistent with nuclear energy’s share of the 2005 supply mix.
2006-2009
OPG conducts Environmental Assessment
DNNP Chronology
2006-2009
OPG conducts Environmental Assessment
  • As required by the Canadian Environmental Assessment Act (1992), an Environmental Assessment (EA) of the proposed project is conducted, including comprehensive studies undertaken by OPG and consultation with Indigenous communities, local community members and the broader public.
September 2009
OPG submits Environmental Impact Statement
DNNP Chronology
September 2009
OPG submits Environmental Impact Statement
March 2011
Joint Review Panel conducts public hearing
DNNP Chronology
March 2011
Joint Review Panel conducts public hearing
August 2011
Joint Review Panel submits EA report
DNNP Chronology
August 2011
Joint Review Panel submits EA report
May 2012
Government of Canada accepts Joint Review Panel recommendation
DNNP Chronology
May 2012
Government of Canada accepts Joint Review Panel recommendation
  • The Government of Canada issues a response accepting the recommendation of the Joint Review Panel and accepting the Environmental Assessment (EA).
August 2012
CNSC issues licence to prepare site
DNNP Chronology
August 2012
CNSC issues licence to prepare site
  • The CNSC issues the Licence to Prepare Site to OPG for a period of 10 years, valid from August 17, 2012 to August 17, 2022.
December 2013
Ontario asks OPG to defer construction but maintain site licence
DNNP Chronology
December 2013
Ontario asks OPG to defer construction but maintain site licence
  • Citing lower than planned power consumption growth combined with a strong supply situation, the Government of Ontario, through the 2013 Long-Term Energy Plan, requests that OPG defer the construction of new nuclear reactors but maintain the existing licence.
2013 to Today
OPG maintains site licence
DNNP Chronology
2013 to Today
OPG maintains site licence
  • OPG continues to maintain the licence in accordance with the licence conditions.
September 2018
OPG submits mid-term report
DNNP Chronology
September 2018
OPG submits mid-term report
  • OPG submits a licence Mid-Term report to the CNSC, outlining the activities undertaken since the licence was granted as well as a report providing an update on the commitments made by OPG (updated April 2019) during the licencing process.
September 2018
OPG notifies CNSC of intent to apply for licence renewal
DNNP Chronology
September 2018
OPG notifies CNSC of intent to apply for licence renewal
  • OPG issues notification to the CNSC of our intent to apply to renew the site licence that is set to expire in August 2022.
October 2019
OPG submits site preparation licence renewal plan
DNNP Chronology
October 2019
OPG submits site preparation licence renewal plan
June 2020
OPG submits application to renew licence for Darlington New Nuclear
DNNP Chronology
June 2020
OPG submits application to renew licence for Darlington New Nuclear

OPG has submitted an application to the Canadian Nuclear Safety Commission (CNSC) seeking renewal of the licence that allows OPG to undertake site preparation activities required for new nuclear generation at OPG’s Darlington site.

OPG currently holds a Site Preparation Licence for the Darlington Nuclear site, the first of a series of licences that would be required for additional nuclear generation capacity. The current 10-year licence was obtained following the completion of comprehensive environmental impact studies and an extensive public hearing conducted by a Joint Review Panel of the CNSC and the Canadian Environmental Assessment Agency in 2012.

OPG has not yet undertaken any licensed activities on the site. However, the existing licence allows OPG to carry out activities to prepare the site for future construction, for example:

  • Clearing and grubbing vegetation
  • Excavation and grading of site
  • Installing services and utilities required to service the future project facilities (e.g., domestic water, fire water, sewage, electrical, communications, natural gas)
  • Constructing support buildings

As the licence expires in 2022, renewing the licence will help maintain the option for reliable, low carbon nuclear energy to remain a key part of Ontario’s low-emission energy mix.

With the application submitted, the CNSC will determine the timing and process for review. A decision by the commission members is expected in 2021. The application and supporting documents are available here:

October 2020
CNSC announces public hearing dates and availability of participant funding
DNNP Chronology
October 2020
CNSC announces public hearing dates and availability of participant funding
November 2020
OPG resumes planning activities for Darlington New Nuclear
DNNP Chronology
November 2020
OPG resumes planning activities for Darlington New Nuclear
  • On Nov. 13, 2020, OPG was joined by Provincial government and local municipal and business leaders to announce that planning activities will resume to construct a Small Modular Reactor at OPG’s Darlington site in Clarington.
June 2021
CNSC Site Preparation Licence renewal hearing
DNNP Chronology
June 2021
CNSC Site Preparation Licence renewal hearing
October 2021
CNSC approves renewal of licence to prepare site
DNNP Chronology
October 2021
CNSC approves renewal of licence to prepare site
  • The CNSC issued the Licence to Prepare Site renewal to OPG for a period of 10 years, valid from October 12, 2021 until October 11, 2031.
December 2021
OPG announces partnership with SMR technology developer GE Hitachi Nuclear Energy
DNNP Chronology
December 2021
OPG announces partnership with SMR technology developer GE Hitachi Nuclear Energy

On Dec. 2, 2021, OPG was joined by the Minister of Energy, and local elected officials and business leaders to announce it will work together with GE Hitachi Nuclear Energy to deploy a Small Modular Reactor (SMR) at the Darlington new nuclear site, the only site in Canada currently licensed for a new nuclear build.

March 2022
OPG announces partnership with E.S. Fox Limited for execution of early site preparation activities
DNNP Chronology
March 2022
OPG announces partnership with E.S. Fox Limited for execution of early site preparation activities

On Mar. 10, 2022, OPG was joined by the Minister of Energy and local elected officials and business leaders to announce a contract award to E.S. Fox to perform the early site preparation work required for future construction of the company’s first grid-scale small modular reactor.

June 2022
CNSC approves Financial Guarantee for Site Preparation phase of the Darlington New Nuclear Project
DNNP Chronology
June 2022
CNSC approves Financial Guarantee for Site Preparation phase of the Darlington New Nuclear Project

On June 8, 2022 the Canadian Nuclear Safety Commission announced its approval of OPG’s application for acceptance of the Financial Guarantee for the site preparation phase of the Darlington New Nuclear Project. This milestone opens the door for site preparation work to begin.

September 2022
OPG begins site preparation activities at Darlington site
DNNP Chronology
September 2022
OPG begins site preparation activities at Darlington site

OPG has received regulatory approval to enter into the next phase of project development – site preparation.

This work includes non-nuclear infrastructure activities, such as clearing and grading a portion of the new nuclear site to build roads, utilities and support buildings. Mobilization for these activities begins in late September 2022, with execution of site preparation work planned to continue into 2025.

October 2022
OPG applies to the CNSC for a Licence to Construct
DNNP Chronology
October 2022
OPG applies to the CNSC for a Licence to Construct

A Licence to Construct from the CNSC is required before any construction work on an SMR at Darlington can begin. OPG’s application for this licence is comprised of a number of packages, submitted to the CNSC over the course of several months. This application process will culminate in a public hearing where the regulator will hear comments from members of the public regarding our application.

January 2023
Team forms to build North America’s first SMR
DNNP Chronology
January 2023
Team forms to build North America’s first SMR

OPG partnered with GE Hitachi Nuclear Energy (GEH), SNC-Lavalin, and Aecon to plan, construct, and deploy an SMR at the Darlington site.

All parties will manage the project as an integrated team and each company will play a specific role in successfully completing the Darlington New Nuclear Project:

  • OPG: The license holder; OPG will maintain overall responsibility for the project, including operator training, commissioning, Indigenous engagement, stakeholder outreach and oversight.
  • GE Hitachi: The technology developer; responsible for design, procurement of major components, and engineering and support.
  • SNC-Lavalin: The architect engineer; provides design, engineering and procurement support.
  • Aecon: The constructor; will provide construction planning and execution.
July 2023
Ontario announces planning and licensing for three additional SMRs
DNNP Chronology
July 2023
Ontario announces planning and licensing for three additional SMRs

On July 7, 2023, the Ontario government announced it will work with OPG to commence planning and licensing for three additional SMRs, for a total of four, at the Darlington new nuclear site.

November 2023
OPG selects fuel suppliers for SMR
DNNP Chronology
November 2023
OPG selects fuel suppliers for SMR

Ontario Power Generation (OPG) announced it is partnering with companies from Canada, the U.S., and France to ensure a fuel supply for the first unit of its four-unit Darlington New Nuclear Project.

The four contracts will involve:

  • Canadian company, Cameco, which has uranium mines in Saskatchewan and a Uranium Hexafluoride (UF6) conversion facility in Port Hope, will supply natural UF6.
  • US-based, Urenco USA (UUSA) will provide uranium enrichment services from their operations in Eunice, New Mexico.
  • France’s Orano will provide additional Enriched Uranium Product (EUP) from their operations in France.
  • And US-based, Global Nuclear Fuel-Americas LLC, a GE-led joint venture, will provide fuel fabrication and related technical services and fuel assemblies.
January 2024
CNSC hearing for the Applicability of the DNNP Environmental Assessment and Plant Parameter Envelope to BWRX-300
DNNP Chronology
January 2024
CNSC hearing for the Applicability of the DNNP Environmental Assessment and Plant Parameter Envelope to BWRX-300

The CNSC held a three-day hybrid hearing to consider the applicability of the DNNP environmental assessment and plant parameter envelope to OPG’s selected BWRX-300 small modular reactor technology

February 2024
Early site preparation work complete
DNNP Chronology
February 2024
Early site preparation work complete

On Feb. 15, 2024, OPG and site preparation partner, E.S. Fox, turned the Darlington New Nuclear Site over to construction partner, Aecon, following on-schedule completion of the early site preparation work program. The work completed under the Site Preparation Licence over the past two years included site clearing and grading, construction of temporary roads and laydown areas, and installation of stormwater features, as well as establishing on-site utilities. Aecon will now undertake the main site preparation work program which will include installation of permanent construction power, clearing and grubbing for a four-unit layout, construction work for site establishment activities including the shoring wall required for reactor building excavation, and construction of fabrication and administration buildings.

April 2024
CNSC confirms DNNP existing EA is applicable to BWRX-300 reactor technology
DNNP Chronology
April 2024
CNSC confirms DNNP existing EA is applicable to BWRX-300 reactor technology

On April 22, 2024, the Canadian Nuclear Safety Commission (CNSC) announced the Commission’s decision that the existing environmental assessment for the Darlington New Nuclear Project is applicable to GE Hitachi’s BWRX-300 small modular reactor technology.

October 2024
CNSC hearing on OPG’s application for a Licence to Construct one BWRX-300 reactor (Part 1 of 2)
DNNP Chronology
October 2024
CNSC hearing on OPG’s application for a Licence to Construct one BWRX-300 reactor (Part 1 of 2)

The CNSC held a virtual hearing the first hearing in a set of two on this matter – to consider OPG’s application for a licence to construct one BWRX-300 reactor for its Darlington New Nuclear Project.

January 2025
CNSC hearing on OPG’s application for a Licence to Construct one BWRX-300 reactor (Part 2 of 2)
DNNP Chronology
January 2025
CNSC hearing on OPG’s application for a Licence to Construct one BWRX-300 reactor (Part 2 of 2)

The CNSC held a hybrid public hearing – the second in a set of two on this matter – to consider OPG’s application for a Licence to Construct one BWRX-300 reactor for its Darlington New Nuclear Project.

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Pickering Nuclear – Planning for the future

OPG closed a significant chapter when Pickering Nuclear’s Unit 4 was removed from service on Dec. 31, 2024.

The unit has safely and reliably generated energy for our communities for decades and will now be placed into safe storage. Throughout those years, thousands of workers have been dedicated to its strong performance and significant contributions to Durham Region.

This milestone means that Units 1 to 4 will now be prepared for decommissioning.

Units 5 to 8 will continue to operate to the end of 2026, and then be prepared for refurbishment, pending regulatory approval. These four units contribute 10 per cent of Ontario’s electricity and will continue to play a key role in providing the reliable, affordable, and low-carbon electricity the province needs for years to come.

Pickering BargeDid you know?

You might recall in Spring 2024, OPG placed barges on the lake to perform geotechnical assessments for Pickering Nuclear refurbishment planning. Up to four barges will return to the lake in spring, located just south of the Pickering Nuclear Generating Station. There will also be up to three drill rigs on shore. This equipment will support continued geotechnical assessments for Pickering Refurbishment planning until approximately October 2025, weather dependent.

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Nicolle Butcher, President & CEO
Nicolle Butcher, President & CEO

Meet the CEO

Nicolle Butcher was appointed OPG’s President and Chief Executive Officer (CEO) in January 2025. Nicolle is a champion for Indigenous communities, companies, and businesses to achieve OPG’s Reconciliation Action Plan commitments.

In 2021, Nicolle was named one of Canada’s Top 100 Most Powerful Women and Woman of the Year by WIRE (Women in Renewable Energy) and APPRO (Association of Power Producers of Ontario). Nicolle holds an MBA from McGill University, is a Chartered Business Valuator, and has earned an ICD.D designation from the Institute of Corporate Directors.

As she moves into her new role, Nicolle is committed to building on OPG’s history of safe, on-time, and on-budget completion of key projects, including the Darlington Refurbishment and the development of Small Modular Reactors, furthering OPG’s vision to electrify life in one generation.

Outside of work, Nicolle enjoys hiking and spending time with her family, including her two boys, and Jasper the Labradoodle.

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Educational session for local students
Educational session for local students

Bring Back the Salmon

For nearly two decades, the Ontario Federation of Anglers and Hunters (OFAH) has worked to restore Atlantic Salmon to Lake Ontario through the Bring Back the Salmon program. This year, students from Dr. G.J. MacGillivray, in Courtice and Duffins Bay Elementary School in Ajax will join OPG, OFAH, Toronto Region Conservation Authority and Central Lake Ontario Conservation Authority to participate in this hands-on initiative, which educates students about the Atlantic Salmon’s history in Ontario and restoration efforts.

Nuclear energy saves lives

Nuclear Isotopes

Click here to learn about how OPG produces medical-grade nuclear isotopes, supporting global healthcare by providing essential diagnostic and therapeutic treatments.

Inspiring the next generation of skilled workers

OPG employees help students explore the trades

OPG employees recently introduced 1,300 students to skilled trades through interactive workshops, promoting hands on career exploration. Click here to learn more.

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Upcoming Events

01
Jan
Sessions available until July 1, 2025
In person
A child at a desk in a classroom raises his hand to ask a question.
27
May
May 27 and June 4
6 to 8 p.m.
See schedule
An aerial view of Darlington Nuclear Generating Station.

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