Copenhagen Atomics

Copenhagen Atomics pioneers thorium molten salt reactors, a solution that burns nuclear waste to generate abundant and cost-effective green energy

[Copenhagen Atomics @CphAtomics]

It is out now! Find the link below 👇

A few weeks ago we asked what you wanted to know about Copenhagen Atomics. You asked great questions and now the podcast is live 🎧

We cover reactor terminology, pricing, waste, thorium mining, the PSI project, timeline, IPO plans and key technical challenges.

https://t.co/ol54nMq4jC

[Copenhagen Atomics @CphAtomics]

We joined Adnan Belushi on The Nuclear Show for a deep conversation about what we are building at Copenhagen Atomics and why.

Our CEO, Thomas Jam Pedersen, talks about the path to our 2028 test reactor, scaling thorium molten salt reactors in the 2030s, and what it is like working inside a hands-on engineering team building real hardware for the future of energy.

If you are interested in advanced nuclear and want to help build it, this is a good place to start.

Watch the full interview 👇
https://t.co/WsUj2p9hdC

[Copenhagen Atomics @CphAtomics]

What would you like to know about Copenhagen Atomics? Ask your questions below 👇

This Friday, co-founders CEO Thomas Jam Pedersen and CTO Aslak Stubsgaard will sit down to give an update on CA and answer some of the many questions we receive.

We’ll record the conversation and publish the full video on our YouTube channel.

Before we do, we’d love to hear from you.

What would you like to know about CA, the molten salt reactor industry, or the people behind the company?

Like questions you’d like us to answer, so we can see what interests you.

[Copenhagen Atomics @CphAtomics]

@SpaceElevator7 It is. But it is also much more expensive.

[Copenhagen Atomics @CphAtomics]

Did we just solve the corrosion challenge in molten salt reactors?

Our experiments show that corrosion drops dramatically when molten fluoride salts are highly purified. In tests with the University of Liverpool, stainless steel showed very low corrosion rates even at very high temperatures.

Read here: https://t.co/WvyTEyKPh8

[Copenhagen Atomics @CphAtomics]

@MrBighe71088399 Moisture, oxides and metal traces.

[Copenhagen Atomics @CphAtomics]

Read more here: https://t.co/puv1rr9bVO

[Copenhagen Atomics @CphAtomics]

Copenhagen Atomics will collaborate with Rare Earths Norway to secure future thorium supply.

The agreement supports the development of a European supply chain for the fertile material that powers our molten salt reactors and marks another step toward commercial deployment.

[Copenhagen Atomics @CphAtomics]

@AnthonyAus64368 @GreenTyler27 We're unfortunately not the first to build a thorium molten-salt reactor, but we will certainly be among the first.

But indeed, we'll be the first to build it with the onion-core design, which allows for greater efficiency and thereby lower energy costs.

[Copenhagen Atomics @CphAtomics]

Have you seen the latest video from Two Bit da Vinci regarding Copenhagen Atomics?

Watch it here: https://t.co/olWeh6gmHe

[NucNet Nuclear News @NucNetNews]

🇩🇰 Copenhagen Atomics Validates Core Molten Salt Technology With Two Years Of Continuous Pump Operation. #NuclearPower #NuclearEnergy

Next-gen #nuclear reactor developer says testing dramatically reduces risk later in development process

👉 https://t.co/FEGhVvyksi

[Copenhagen Atomics @CphAtomics]

@RussRest The reactors will be running on the same fuel for decades.

[Copenhagen Atomics @CphAtomics]

Copenhagen Atomics is different. That is the point.

In nuclear energy, very different technologies are grouped under the same labels. It sounds neat. It is also misleading.

Our molten salt reactors run for decades on the same fuel. That changes what scaling nuclear can actually look like.

Read the full article here: https://t.co/O4wOQbwlYW

[Copenhagen Atomics @CphAtomics]

New YouTube collab 🎬

Europe’s Foundry (euFoundry) just released an episode featuring Copenhagen Atomics, with Thomas Jam Pedersen, Tobias Ravn Thomsen, and George Swalwell.

Advanced nuclear is not a slide deck. It is hardware built, tested, and improved through iteration.

Watch: https://t.co/vmBqrLqIdE

[Copenhagen Atomics @CphAtomics]

Happy Holidays from all of us at Copenhagen Atomics 🎄
As we pause for Christmas, we’d like to thank everyone who has followed, supported, collaborated with, and challenged us throughout 2025.

Our mission remains unchanged: contributing to a future with clean, scalable, and affordable energy.

Progress takes persistence, openness, and long-term thinking, and we’re grateful to be part of a community that shares these values.

Wishing you a peaceful Christmas 🎄⚛️

[Copenhagen Atomics @CphAtomics]

Along the road to Switzerland, there are many steps. This is one of them.

Copenhagen Atomics and PSI have published a peer-reviewed study validating molten-salt reactor depletion modelling under real MSR conditions.

For the upcoming 1 MW Molten Salt Experiment, three independent codes (OpenMC, Serpent, EQL0D) were benchmarked across increasingly complex models with circulating fuel and online fission-gas removal.

The result: strong multi-code agreement and validation of OpenMC’s continuous reprocessing framework.

Accurate radionuclide inventories are the foundation of safety analysis and regulation. This work shows that modern MSR behaviour can now be modelled with confidence.

Congrats to Lorenzo Chierici and Alessio Rossi on a state-of-the-art validation for molten-salt systems.

https://t.co/Y32PQDEV1c

[Copenhagen Atomics @CphAtomics]

@echo42null None is currently planned. But if a future one is planned, it will likely be announced via our newsletter, which you can sign up for on our website.

[Copenhagen Atomics @CphAtomics]

Last Friday, we celebrated a big milestone at Copenhagen Atomics 🎉
One of our molten salt loops has now reached 2 years of cumulative runtime, the longest runtime yet.
A key step toward proving reliability before full reactor testing in Switzerland.
More testing ahead! ⚛️

[Copenhagen Atomics @CphAtomics]

@grok @ScubaSteveGamin @grok the output of Copenhagen Atomics' commercial reactor is approx. 42 MWe (100 MWth). It is our test reactor in Switzerland that will be 1MWth.

[Copenhagen Atomics @CphAtomics]

@DAMNQ69 Depending on a few factors, including securing the last approvals, we could have it up and running in Switzerland by 2027.