Our Team

Bringing together leaders in business and technology

Fred Buckman, Ph.D.


Dr. Fred Buckman’s career spans five decades and a long list of executive positions and accomplishments. Dr. Buckman’s past positions include the following: President of Power Group of The Shaw Group Inc., and during his tenure he oversaw Shaw’s premier capabilities in the fossil and nuclear power industry; Managing Partner of Brookfield Asset Management Inc., where he was responsible for the utility sector; in 1999, he founded and was Chairman and Chief Executive Officer of Trans-Elect Development Company Inc., which became the first independent transmission company in North America.

He continues to serve as Chairman; President and Chief Executive Officer of Powerlink Transmission Company. He was Chief Executive Officer and President of PacifiCorp from 1994 to 1998, where he transformed the company from a regional utility to a significant national and international energy company that was sold to MidAmerican Energy in 2005 for US $5.2 billion. He also served as President and Chief Executive Officer of Consumers Power Company (now known as Consumers Energy), the utility subsidiary of CMS Energy, from 1988 to 1994.

Dr. Buckman continues to hold several directorships of leading energy companies, including: General Fusion Inc. (Chairman); Smart Wires, a transmission technology company; and Solomon corporation. He is also a member of the StanCorp Financial Group Board. Dr. Buckman is the Adjunct Professor of Nuclear Engineering at the University of Michigan. He completed Harvard Business School’s Advanced Management Program in 1982. He received a bachelor’s degree in engineering from the University of Michigan and a doctorate in nuclear engineering from the Massachusetts Institute of Technology.

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David Hill, Ph.D.


Dr. David Hill is a physicist and M.B.A. with 30 years of career experience in nuclear research and in managing large nuclear laboratories in the U.S. Dr. Hill has held senior executive management positions in the foremost national nuclear laboratories in the U.S. from 1984 to 2012, specifically Argonne National Laboratory (ANL), Oak Ridge National Laboratory (ORNL) and Idaho National Laboratory (INL). From 2005 to 2012, Dr. Hill was Deputy Laboratory Director for Science and Technology at Idaho National Laboratory. Most recently, Dr. Hill has been an independent contractor and provided consulting services to companies in the nuclear industry, including Babcock & Wilcox, the world’s largest provider of nuclear engineering, procurement and construction services.

Throughout his career, Dr. Hill has gained experience in all aspects of nuclear energy, domestically and internationally. He has managed major projects, including at the experimental fast reactor at INL, and led the restructuring of INL. He has been responsible for hundreds of staff, and hundreds of millions of dollars in annual budgetary research and development expenditures.

Dr. Hill received his BSc (first class) and his PhD in mathematical physics from the Imperial College, London University. He further received his Honors Masters of Business Administration from the University of Chicago Graduate School of Business. He is a Fellow of the American Nuclear Society and Member of the International Nuclear Academy.

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Simon Irish

Chief Executive Officer

Simon Irish is Chief Executive Officer of Terrestrial Energy Inc. He has 20 years of global investment banking and investment management experience in New York and London. He has a formal education in the quantitative sciences and quantitative finance and has established and managed multi-billion-dollar alternative investment businesses in North America.

Mr. Irish is the former Head of Man Global Strategies (MGS) in North America, the strategic investment division of Man Group Plc, a leading global investment management business. During his tenure at Man, Mr. Irish was responsible for building and managing the largest and most active strategic investment and managed account business in North America. Mr. Irish was a member of the Investment Committee and responsible for corporate acquisition opportunities in North America for Man Group Plc.

Mr. Irish began his banking career at Credit Suisse in London and in 2001 moved to New York as Director of FRM, the London-based investment firm, to establish its U.S. business.

In 2010, he focused on opportunities in breakthrough energy technologies and in particular nuclear energy given its unparalleled energy density and the commercial potential of advanced reactor technologies.

Mr. Irish holds an MA in Natural Sciences from Cambridge University and an MSc in Finance from the London Business School.

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David LeBlanc, Ph.D.

President, Chief Technology Officer, Director

Dr. David LeBlanc is a globally-recognized authority on Molten Salt Reactor technologies and has dedicated his career to the improvement and realization of advanced nuclear power systems, in particular MSR technologies. His work has focused on the simplification of design and reduction of R&D requirements to realize this goal. He obtained his Ph.D. in Physics from the University of Ottawa in 1998 during which time he focused on High Temperature Superconductivity and their application to fusion energy. He obtained long-term fellowship funding from Canadian Fusion Fuels Technology Project and later focused his interests on improving nuclear fission power.

For 11 years Dr. LeBlanc held a teaching position with the Carleton University physics department. Concurrently he worked independently in the field of Molten Salt Reactors. In 2008, he founded Ottawa Valley Research Associates Ltd. to advance this work and has filed patents relating to innovations in MSR technologies that have specific bearing on improving and broadening the commercial application of the technology.

Dr. LeBlanc has been published numerous times in academic journals in conference proceedings and is extensively cited. He is a frequent speaker at international nuclear industry conferences on Molten Salt Reactor design concepts. He has long recognized that public engagement and education are also necessary to advance MSR technologies. To meet this objective, Dr. LeBlanc has had numerous news media engagements, including interviews and media articles in Mechanical Engineering Magazine, Popular Mechanics, Popular Science, CBC Radio, the Toronto Star and Nuclear Engineering Insider.

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Hugh MacDiarmid


Hugh MacDiarmid’s executive experience includes serving as President and CEO of Atomic Energy of Canada Limited from 2008 to 2011, President and CEO of Laidlaw Transit Inc. from 2003 to 2005, Executive Vice-President, Commercial of Canadian Pacific Railway from 1995 to 2001, and President and CEO of Lumonics Inc. from 1987 to 1990. Mr. MacDiarmid currently serves as a Director of SeaCube Container Leasing Limited and Ridge Canada Cyber Solutions Inc.

Early in his career, Mr. MacDiarmid was an Associate and then Principal with McKinsey & Company, a leading international management consulting firm. He holds an M.B.A. from the Graduate School of Business at Stanford University, graduating as a Miller Scholar, and an HBA from the Ivey Business School at Western University.

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Canon Bryan

Chief Financial Officer

Canon Bryan has held executive management positions and served as officer and director for private and public companies in Canada and the U.S. Mr. Bryan has considerable experience providing financial management services to clients in various industries. He has focused primarily on energy and natural resources industries.

Mr. Bryan was a co-founder of: NioCorp (NB: TSXV), a company developing the largest niobium deposit in North America; Uranium Energy Corp (UEC: NYSE) where he served as an officer until October 2007. UEC is a producer of ISR uranium in the U.S. Previously Mr. Bryan was senior financial analyst for Lasik Vision Corporation (LSK: CDNX), which was the world’s largest provider of laser refractive surgical services.

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William Smith

Senior Vice President, Operations and Engineering

William Smith has 35 years of experience in the energy business, including over 20 years in the nuclear industry at Ontario Hydro and Ontario Power Generation between 1981 and 2002. He worked as a Resident Project Engineer at Bruce and Darlington during the construction and commissioning phases, and subsequently advanced to a senior leadership role as the Vice President of Supply Chain where his responsibilities included all nuclear procurement, materials management and source surveillance activities.

In 2002, Mr. Smith joined Siemens Canada rising to become the Senior Vice President of Siemens’ energy business in Canada, which included power generation and transmission, oil and gas and smart technologies across the energy sector. He was responsible for all sales and marketing, manufacturing, service delivery and project management and successfully built the business into a billion-dollar enterprise.

During Mr. Smith’s tenure in both the private and public sector, he has developed deep experience and capability in major project execution, building team capability and managing external interfaces with clients, suppliers and regulators.

Mr. Smith holds a B. Eng (with Distinction) from Carleton University and an MBA from the Schulich School at York University. He is a P. Eng registered with the Professional Engineers of Ontario (PEO) and with the Association of Professional Engineers and Geoscientists of Alberta (APEGA).

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Louis Plowden-Wardlaw

Company Secretary, General Counsel

Louis Plowden-Wardlaw has advised clients including Credit Suisse, KBC Financial Products and North Asset Management on a wide range of transactions, from project finance in the energy business, general banking and international corporate law, derivatives transactions, fund structuring and the management of high profile litigation. Previously he served as Senior Legal Adviser and Head of Legal at the Royal Bank of Canada, London, (1995-2000).

He is a Director of General Counsel Limited, a software services company, and a founding Trustee of the Activation Trust, an educational trust operating in Kenya. He was for six years a Director of Argo Real Estate Opportunities Fund Limited, a public company running and building retail parks in Central and Eastern Europe. Mr. Plowden-Wardlaw began his career as a banking and asset finance solicitor with Watson, Farley and Williams.

Mr. Plowden-Wardlaw graduated with an LLB (Law, First class) from the University of Birmingham and holds an MSc (Finance) from London Business School and an MSc (Conservation and Biodiversity Law) from the University of Kent. He is a Liveryman of the City of London. He was called to the Bar of England and Wales in 1990.

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Learn More About Terrestrial Energy

Terrestrial Energy is an industry-leading technology company committed to delivering reliable, emission-free, and cost-competitive nuclear energy with a truly innovative advanced reactor design, the Integral Molten Salt Reactor (IMSR®).