July 2023

July 2023 COG Collaboration Update

April 2023

April 2023 COG Collaboration Update to Members


It is hard to believe it has only been three months since I returned to COG – while the time has flown by, we have accomplished so much working together. I am proud of what we have achieved and even more excited about all that is ahead of us. Read more.

February 2023

February Collaboration Update – COG at CNA; CCW registration now live; What We Heard

January 2023

COG 2022 Highlights


TORONTO – For COG, 2022 was a busy and transitional year. Working together, our members and stakeholders achieved tremendous accomplishments in nuclear science and towards net zero goals. Read more.

October 2022

Rachna Clavero appointed as incoming COG President and CEO


TORONTO – Today CANDU Owners Group (COG) announced the appointment of Rachna Clavero to the role of president and CEO, effective December 5, 2022. Clavero is returning to COG following five years with the organization from 2015-2020. Read more.

June 2022

COG welcomes new OPG board member Leslie McWilliams


TORONTO – COG’s five-member board of directors has a new representative. Ontario Power Generation’s Leslie McWilliams has joined the COG board.  Read more.


April 2022

Liette Lemieux Appointed as Interim COG President & CEO


TORONTO – Earlier today, CANDU Owners Group (COG) announced the appointment of Liette Lemieux to the role of Interim President & CEO, effective May 7. Liette will take over the role from Stephanie Smith, who announced her resignation from COG earlier this month; the two will work closely together until Stephanie’s departure on May 6.  Read more.




Update: COG President and CEO, Stephanie Smith


TORONTO – CANDU Owners Group (COG) President and CEO Stephanie Smith announced her resignation from COG, following two years leading the organization, effective May 6, 2022. “It has been a privilege working with COG’s members,” said Smith. “I have seen first-hand the power of collaboration to generate value and operational excellence for CANDU operators worldwide.” Read more.



March 2022


Bruce Power driving economic revitalization across Ontario’s nuclear supply chain
The CANDU Owners Group Member utility celebrated several key Major Component Replacement Project contracts with COG supplier participants Read more.



March 2021


COG-IAEA expand Practical Arrangement
COG and International Atomic Energy Agency (IAEA) strengthen long-standing relationship by expanding scope of their existing partnership in knowledge management. Read more.


uary 2021


New directors appointed to the COG Board
COG voting members approve new board representatives for Canadian Nuclear Laboratories (CNL) and Societatea Nationala Nuclearelectrica (SNN, Romania). Read more.


December 2020


Virgini Donaldson joins COG as Program Manager, Strategic R&D
Virgini Donaldson will join COG as program manager for the Strategic Research and Development Program, effective Jan. 4, 2021. Read more.


November 2020


Hari Nayar joins COG as Program Manager, CANIAC
Effective Nov. 2, Hari Nayar has joined COG as the new program manager for the CANDU Industry Assessment Committee (CANIAC) program, reporting directly to Sonia Qureshi. Read more.


October 2020


Nuclear safety leader joins COG's management team
Effective Oct. 26, Carlos Lorencez will assume the director's role of COG's Nuclear Safety and Environmental Affairs program. Read more.


September 2020


A message from COG's new President and CEO Stephanie Smith
Effective Sept. 1, Stephanie Smith takes over as COG President and CEO while Fred Dermarkar steps out of role. Read more.


July 2020


COG signs on to Equal by 30
CANDU Owners Group has joined many of its members and partners by signing on to the Equal by 30 global initiative, an aspiring goal it has already achieved a decade earlyRead more.


June 2020


Stephanie Smith appointed as incoming COG President and CEO
Earlier today, COG announced the appointment of Stephanie Smith to the role of president and CEO, following a transition period with COG’s outgoing leader Fred Dermarkar, later this summer. Dermarkar announced his retirement from COG in FebruaryRead more.

Adjustment to COG President and CEO Fred Dermarkar's retirement date
An update on COG executive search and timeline for onboarding a new COG president and CEO to replace Fred Dermarkar, who announced his retirement plans in FebruaryRead more.

February 2020

Retirement announcement: COG President and CEO, Fred Dermarkar
On Feb. 14, COG and CEO Fred Dermarkar announced his upcoming returement, following six years leading the organization, effective July 31, 2020. "It has been humbling to work with COG members," said Dermarkar. "These are nuclear operators who are committed to working together to resolve challenges and who constantly pursue new innovations to strengthen safety and reliability. Read more.

January 2020

COG announces staffing changes within Joint Projects & Services line of business
COG’s Joint Projects & Services (JP&S) Program Manager Paul Lafreniere has announced his plan to retire from the organization effective February 2020. He has agreed to continue to support various COG initiatives, in a part-time capacity, such as: benchmarking activities, member Q&As and act as a senior advisor supporting JP&S. Read more.

December 2019

Rachna Clavero named Deputy CEO
Rachna Clavero, COG's Director, Nuclear Safety and Environmental Affairs (NSEA) will assume the role of Deputy CEO, effective Jan. 6, 2020, upon her return from secondment at Ontario Power Generation. Read more.

November 2019

COG welcomes new procurement manager
In keeping with its commitment to continuously strengthen its business efficiency processes, COG has hired a new strategic sourcing and procurement program manager effective Dec. 2, 2019. Dan Prentice will join the Corporate Services and Finance team reporting directly to John Moore, Director of Corporate Services and CFO. Read more.

COG names new R&D program manager
COG has announced that Yevgeniya Le will be joining the COG R&D team as program manager for health, safety and environment effective Monday, Nov. 25, 2019. Yevgeniya's background is well-suited to the role she will take on at COG and aligns to a strong focus area for many of COG's members. Read more.

COG veteran takes lead on fuel channel and spacer life management projects
Harry Sherwood has rejoined COG as a project manager for fuel channel and spacer life management (FCLM and SLM). Harry’s first day in this role was Monday, Nov. 18 and he will serve in this capacity while Thanuja Janathasing is on maternity leave. Read more.