Leading the way to a bright energy future.

IMSR®: Transformative Clean Energy Technology

To meet the increasing energy demands of global prosperity, while protecting the environment and the air in our cities that we breathe, we need a game changer.

Terrestrial Energy’s IMSR® Advanced Modular Reactor is that technology.
4th generation nuclear power plant - Terrestrial Energy - generation iv reactor

Terrestrial Energy is developing revolutionary — not simply evolutionary — fission technology for electric power and hydrogen and much more. To achieve this, we use completely different nuclear technology – a molten salt as coolant and fuel in our Integral Molten Salt Reactor (IMSR®) power plant. With this technologically superior yet proven approach, IMSR® nuclear power plants are on a clear path to market and are more affordable, more cost competitive, and more versatile than conventional nuclear power plants that have been in use commercially for over 60 years.

IMSR® technology can be brought to market quickly, building them in four years to produce electricity or industrial heat at prices competitive with fossil fuels, while emitting no greenhouse gases. The first IMSR® power plants are expected to come online in the late 2020s.

IMSR® technology is today’s reliable and resilient clean energy game changer.

Learn more about the IMSR® and how Terrestrial Energy is leading the way to a bright energy future.


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Terrestrial Energy appoints managing director to spearhead commercialisation of new nuclear technology in the UK

Oxford, United Kingdom, January 18, 2022 – Terrestrial Energy has appointed a senior nuclear industry executive as Managing Director of UK operations as the company advances its new nuclear technology.

Michael Drury joins the company from the UK National Nuclear Laboratory (NNL), where he led the business development function for New Build and Advanced Nuclear Technologies, including Small Modular Reactors and Advanced Modular Reactors.

The appointment comes as Terrestrial Energy moves forward with the development and commercialisation of its Integral Molten Salt Reactor (IMSR®) Generation IV nuclear technology in the UK.

Mr Drury has extensive experience of strategy and execution at the intersection of industry and government in the nuclear industry at both NNL and previously at Nuvia.

Simon Irish, CEO of Terrestrial Energy said: “Terrestrial Energy’s North American developments are moving its Generation IV nuclear power plant towards near term deployment, and we recognize that IMSR® technology is an ideal nuclear technology innovation for the UK, especially at a time of escalating energy and power prices.

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OCNI Recognizes L3Harris with Innovation Award for Development of Terrestrial Energy IMSR® Simulator

Oakville, Ontario – December 7, 2021 – The Organization of Canadian Nuclear Industries (OCNI) has awarded L3Harris Technologies its 2021 Innovation Award for its work developing a simulator for Terrestrial Energy’s Integral Molten Salt Reactor (IMSR®), a Generation IV nuclear power plant.


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Get the latest on Terrestrial Energy and our groundbreaking IMSR® technology.

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®).