Swedish Precision
Engineering
A new paradigm for nuclear.
The SEALER is a 55 MWe reactor, factory-built and shipped by road. With high power density and inherent safety for true co-location, it is the ideal baseload solution for AI data centers and industry.
Clean Baseload Power.
For the climate and for society.
High Density Output.
Small design. High output.
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Power Output Per Unit
Allowing Incremental Buildouts
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Compact Size
Built for Factory Production
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Years of Research
Proven Tech, Reimagined.
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Lead Boiling Point
Limiting Loss of Coolant
UO0123456789 fuel
Commercially Available
For Fast Deployment
Harnessing the Natural
Properties of Lead
COMMERCIALLY AVAILABLE
UO2 FUEL
The SEALER will use uranium dioxide (UO2) fuel, fabricated at industrial scale, proven across decades of reactor operation.
Our
Partners
We work together with world-class suppliers and partners to bring SEALER™ to deployment.
Oklo
Advanced Reactor Developer
We are commercializing the SEALER in the United States as well as Sweden. Oklo builds sodium-cooled fast reactors there, and co-led our latest funding round. Now two fast reactor companies share materials, supply chains, fuel and licensing experience across the Atlantic.
Uniper
Multinational Energy Company
SEALER-E, our electric prototype, is being built with Uniper at Oskarshamn, inside their operating nuclear plant OKG. Uniper is one of Europe's large power producers and an investor in Blykalla. Now a utility is building the reactor it may one day run.
ABB
Electrification and Automation
Our reactor park is run from one control room, with fewer people and more automation than a conventional plant. ABB builds the control systems that run heavy industry. Now they are working out what an operator does in advanced nuclear, full scale at ARTS, our test facility in Oskarshamn.
Hitachi Energy
Power Grids and Electrification
A reactor park delivers 330 or 440 megawatts into the grid, at the point where industry needs it. Hitachi Energy builds the high-voltage systems that hold power grids together. Now they are connecting advanced nuclear to them, and going to market with us.
Kanthal
World-Leading Steel Producer
Our alumina-forming steel is melted at industrial scale in Hallstahammar. Kanthal has made iron-chromium-aluminum alloys for over a century. Now they are taking that alloy family into advanced nuclear for the first time.
KSB
World-Leading Pump Developer
Our alloys are printed into the pumps that circulate lead through the reactor, among the most demanding components in the plant. KSB is one of the world's leading pump manufacturers. Now they are taking additive manufacturing into pumps designed for molten lead.
Höganäs
Manufacturer of Metal Powders
Höganäs turns our alloys into powder fine enough to print and spray onto the surfaces that meet lead. Höganäs is the world's largest producer of metal powder. Now that powder is being qualified for service inside a reactor.
ESAB
Welding and Cutting Equipment
Our steel is joined with a filler metal made to match it, so a weld stands up to lead as well as the alloy on either side of it. ESAB is one of the world's leading welding companies. Now they are qualifying that filler metal for nuclear service.
INDUSTRIAL SCALE