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

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Terrestrial Energy Signs Agreement to Advance IMSR® Deployment in Western Canada

Signed MOU supports job creation and small modular reactor development in Alberta, focuses on reducing emissions in the oil and gas, and petrochemical industries

CALGARY, Alberta, Canada – August 11, 2022 – Terrestrial Energy, an industry-leading nuclear technology company, and Invest Alberta, the Government of Alberta’s crown corporation promoting high-value investments, have signed a Memorandum of Understanding (MOU) to support commercialisation of Terrestrial Energy’s Integral Molten Salt Reactor (IMSR®) Generation IV small modular reactor (SMR) plant in Western Canada.

Terrestrial Energy’s IMSR® plant has unique potential to supply the heat and power (cogeneration) needs of many industrial activities, including those in the Alberta oil and gas, and petrochemical sectors.

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Generation 4 IMSR® Fission Technology, A Perfect Fit for Repowering Coal

By Simon Irish

Despite the world’s growing awareness of the scale of climate change and the immense challenge of mitigating it, coal is still a predominant source of power, comprising 27 percent of total global primary energy consumption in 2021, according to the BP Statistical Review of World Energy.

With its roughly 900 grams of CO2-equivalent per kilowatt-hour (gCO2/kWh) life cycle emissions, it is one of the most emissions-intensive forms of electricity generation.

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®).