Terrestrial Energy

Leading the way to a bright energy future

This is next-generation nuclear:

the future of powerful, clean energy

Who we are

Creating sustainable, cost-competitive energy at global scale while protecting our eco-systems and the air that we breathe

We’re developing clean, resilient, cost-competitive power plant technology that will forever change how the world produces energy. By using long-proven molten salt Generation IV nuclear fission technology in a commercially innovative small and modular power plant design, we’ve created a brand new, emission-free, sustainable energy source that can scale rapidly to meet the world’s growing energy demands while avoiding greenhouse gas emissions.

Protecting our environment is more important than ever – and a clean, up-to-the-task alternative to fossil fuel combustion is needed; deployable at huge scale. Our IMSR® (Integrated Molten Salt Reactor) technology fulfills that goal and will be the key to our clean energy future.

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More efficient than conventional nuclear power plants
Less waste than conventional nuclear power plants
< 5%
Enriched uranium fuel, today's only safe and secure nuclear fuel standard.
< 10 grams
Full life-cycle grams of CO2-eq per kilowatt-hour of electricity.
> 50 years
Plant operating life
7 hectares
Land use for 400 MW of electric power

What we do

How we're working toward a brighter energy future

Leading the charge

We have taken a fresh look at nuclear fission technology choices and nuclear power plant design to create an energy source that is far more affordable, cost-competitive, can produce clean electric power, heat and hydrogen at huge industrial scale, and can be deployed in a swift time frame – in time to meet climate goals.

Innovating on the conventional

The world has used conventional (water-cooled-water-moderated) fission technology for over 60 years for commercial scale power generation; a technology originally developed for military use in the cold war. Yet there are many other fission technologies. We believe that we can do so much better today. Our Integral Molten Salt Reactor (IMSR®) power plant uses molten salt as a coolant and fuel.

Affordable and versatile

IMSR® power plants are on a clear path to market in a compelling timeframe. They are much more affordable, cost-competitive, and versatile than conventional nuclear power plants that have remained fundamentally unchanged for over 60 years.

Efficient and eco-conscious

Our technology can be brought to commercial markets swiftly and IMSR® power plants built quickly. With a modular design, each plant takes less than four years to construct and will produce electricity or industrial heat at prices competitive with fossil fuels, while emitting no greenhouse gases.

Learn More About IMSR® Technology

Our technology

How IMSR® technology is changing the way we look at energy

IMSR® plants are designed to perform to the needs of today. With long-proven molten salt and Generation IV nuclear fission tech, they’re a clean energy game-changer.

Energy from IMSR® power plants is cleaner and more cost-effective than burning fossil fuels. It is also more resilient and sustainable, having among the lowest environmental impact of all clean energy technologies across a wide range of measures including land-use and sustainability of supply chain metals and minerals. Thanks to molten salt Generation IV nuclear, we’re now able to meet rising energy demands while fighting climate change.

IMSR® power plants are extraordinarily flexible and can supply many industrial energy needs. They pair perfectly on-grid with wind and solar power generation. Their high-grade heat is ideal for producing hydrogen, desalination, and many other industrial uses. By matching innovative design with long-proven technology, Terrestrial Energy has become a clear leader among developers of next-generation nuclear energy.

IMSR® power plants use today’s standard uranium fuel, which is crucial for their rapid deployment.

"We've done the math — and we can't power the world without nuclear energy."

- Open letter to COP 21: Ken Caldeira, Kerry Emanuel, James Hansen, Tom Wigley

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Latest News

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Canada And The United States CrissCross Support For Nuclear Energy’s Bright Future

The United States and Canada have a lot to collaborate on in the nuclear energy field, and they seem to be doing a good job of it.
Mike Drury headshot crop

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.

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®).