Terrestrial Energy

Carbon-Free Energy for Global Industry

This is next-generation fission technology:

powerful, affordable, carbon-free energy

Who we are

Creating sustainable, carbon-free, cost-competitive thermal and electric energy for global industry.

We’re developing clean, resilient, cost-competitive thermal and electric power plant technology that will forever change how the world produces energy.

By using long-proven molten salt Generation IV fission technology in an innovative small modular power plant design, we’ve created an 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 and secure national energy supplies are more important than ever – we need a clean, up-to-the-task alternative to importing and burning fossil fuels, deployable at huge scale. Our IMSR® (Integral Molten Salt Reactor) technology fulfills that goal and will be key to our clean energy future.

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.
< 5 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 fission technology to create an energy source that is far more affordable and cost competitive. Its carbon-free thermal and electric energy will drive green hydrogen and ammonia production at industrial scale, and much more. And we can deploy it swiftly – in timeframe to meet commercial and climate goals.

Innovating on the conventional

The world has used conventional (water-cooled-water-moderated) fission technology for over 60 years for commercial scale electric power generation, this technology originally developed for military use in the Cold War. Yet a much better fission technology exists: our Integral Molten Salt Reactor (IMSR®) thermal and electric plant uses molten salt as a coolant and fuel.

Affordable and versatile

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

Efficient and eco-conscious

We aim to bring our technology to commercial markets and build IMSR® plants swiftly. With a modular design and today’s advanced manufacturing techniques, each plant takes less than four years to construct and will produce thermal and electric energy at prices competitive with fossil fuels, while emitting neither greenhouse gases nor NOX nor SOX pollution.

Learn More About IMSR® Technology

Our technology

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

IMSR® thermal and electric plants are designed to meet today’s needs. Using long-proven molten salt technology, this Generation IV fission technology is a clean energy game-changer.

Energy from IMSR® thermal and electric power plants is carbon-free 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 fission, we can meet rising energy demands while fighting climate change.

IMSR® thermal and electric 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 thermal energy for producing green hydrogen, green ammonia, and many other industrial uses.

IMSR® thermal and electric 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

As Featured By

Latest News

KBR and Terrestrial Energy Agree to Collaborate on the Application of Zero-Emissions Thermal Energy for Green Hydrogen and Ammonia Production

Oxford, United Kingdom, June 9, 2022 – Terrestrial Energy announced today that it has signed an agreement with KBR to investigate the application of zero-emission thermal energy for hydrogen and ammonia production.

Headquartered in the U.S.

US and Canadian Regulators Complete Joint Technical Review of IMSR®

Oakville, ON, and Charlotte, NC, June 7, 2022 – Terrestrial Energy announced today that the Canadian Nuclear Safety Commission (CNSC) and the U.S.

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®).